Exemplo n.º 1
0
def _getinfos_http_client_authorization(spec):
    """Extract (for now) the usernames and passwords from Basic
    authorization headers
    """
    infos = {}
    data = spec["value"].split(None, 1)
    value = spec["value"]
    if data[1:]:
        if data[0].lower() == "basic":
            try:
                infos["username"], infos["password"] = (
                    utils.nmap_encode_data(v)
                    for v in utils.decode_b64(data[1].strip().encode()).split(
                        b":", 1))
            except Exception:
                pass
        elif data[0].lower() == "digest":
            try:
                infos = dict(
                    value.split("=", 1) if "=" in value else [value, None]
                    for value in _split_digest_auth(data[1].strip()))
                for key, value in list(infos.items()):
                    if value.startswith('"') and value.endswith('"'):
                        infos[key] = value[1:-1]
            except Exception:
                pass
        elif (value[:4].lower() == "ntlm"
              and value[4:].strip()) or (value[:9].lower() == "negotiate"
                                         and value[9:].strip()):
            return _getinfos_ntlm(spec)
    res = {}
    if infos:
        res["infos"] = infos
    return res
Exemplo n.º 2
0
def _prepare_rec_ntlm(spec, new_recontype):
    """
    Decode NTLM messages in HTTP headers and split fingerprint from the other
    NTLM info in the spec
    """
    try:
        auth = utils.decode_b64(spec['value'].split(None, 1)[1].encode())
    except (UnicodeDecodeError, TypeError, ValueError, binascii.Error):
        pass
    spec['value'] = "%s %s" % \
        (spec['value'].split(None, 1)[0],
         ntlm._ntlm_dict2string(ntlm.ntlm_extract_info(auth)))
    # Separate the NTLM flags from the rest of the message's info
    # for NTLMSSP_NEGOTIAGE and NTLMSSP_CHALLENGE messages
    if spec['value'].startswith('NTLM ntlm-fingerprint'):
        fingerprint = spec.copy()
        fingerprint['recontype'] = new_recontype
        try:
            fingerprint['value'], spec['value'] = \
                spec['value'].split(',', 1)
        except ValueError:
            spec['value'] = ''
        else:
            spec['value'] = "NTLM %s" % spec['value']
        fingerprint['value'] = fingerprint['value'][5:]
        yield fingerprint
    yield spec
Exemplo n.º 3
0
def _getinfos_http_client_authorization(spec):
    """Extract (for now) the usernames and passwords from Basic
    authorization headers
    """
    infos = {}
    data = spec['value'].split(None, 1)
    value = spec['value']
    if data[1:]:
        if data[0].lower() == 'basic':
            try:
                infos['username'], infos['password'] = (
                    utils.nmap_encode_data(v)
                    for v in utils.decode_b64(data[1].strip().encode()).split(
                        b':', 1))
            except Exception:
                pass
        elif data[0].lower() == 'digest':
            try:
                infos = dict(
                    value.split('=', 1) if '=' in value else [value, None]
                    for value in _split_digest_auth(data[1].strip()))
                for key, value in list(viewitems(infos)):
                    if value.startswith('"') and value.endswith('"'):
                        infos[key] = value[1:-1]
            except Exception:
                pass
        elif (value[:4].lower() == 'ntlm' and value[4:].strip()) or \
             (value[:9].lower() == 'negotiate' and value[9:].strip()):
            spec['value'] = spec['value'].split(None, 1)[1]
            return _getinfos_ntlm(spec)
    res = {}
    if infos:
        res['infos'] = infos
    return res
Exemplo n.º 4
0
def _getinfos_ntlm(spec):
    """
    Get information from NTLMSSP messages
    """
    info = {}
    try:
        for k, v in (item.split(":", 1) for item in spec["value"].split(",")):
            if k == "NTLM_Version":
                try:
                    info[k] = int(v)
                except ValueError:
                    utils.LOGGER.warning(
                        "Incorrect value for field %r in record %r", k, spec)
            else:
                try:
                    info[k] = utils.nmap_encode_data(
                        utils.decode_b64(v.encode()))
                except (UnicodeDecodeError, TypeError, ValueError,
                        binascii.Error):
                    utils.LOGGER.warning(
                        "Incorrect value for field %r in record %r", k, spec)
    except ValueError:
        utils.LOGGER.warning("Incorrect value in message: %r", spec)
        return {}

    return {"infos": info}
Exemplo n.º 5
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def _getinfos_cert(spec):
    """Extract info from a certificate (hash values, issuer, subject,
    algorithm) in an handy-to-index-and-query form.

    """
    infos = {}
    fullinfos = {}
    try:
        cert = utils.decode_b64(spec.get('fullvalue', spec['value']))
    except Exception:
        return {}
    for hashtype in ['md5', 'sha1']:
        infos['%shash' % hashtype] = hashlib.new(hashtype, cert).hexdigest()
    proc = subprocess.Popen(['openssl', 'x509', '-noout', '-text',
                             '-inform', 'DER'], stdin=subprocess.PIPE,
                            stdout=subprocess.PIPE)
    proc.stdin.write(cert)
    proc.stdin.close()
    try:
        newinfos = _CERTINFOS.search(proc.stdout.read()).groupdict()
        newfullinfos = {}
        for field in newinfos:
            if len(newinfos[field]) > utils.MAXVALLEN:
                newfullinfos[field] = newinfos[field]
                newinfos[field] = newinfos[field][:utils.MAXVALLEN]
        infos.update(newinfos)
        fullinfos.update(newfullinfos)
    except Exception:
        pass
    res = {}
    if infos:
        res['infos'] = infos
    if fullinfos:
        res['fullinfos'] = fullinfos
    return res
Exemplo n.º 6
0
def _getinfos_ntlm(spec):
    """
    Get information from NTLM_CHALLENGE and NTLM_AUTHENTICATE messages
    """
    info = {}
    try:
        for k, v in (item.split(':', 1) for item in spec['value'].split(',')):
            if k == 'NTLM_Version':
                try:
                    info[k] = int(v)
                except ValueError:
                    utils.LOGGER.warning(
                        "Incorrect value for field %r in record %r", k, spec)
            else:
                try:
                    info[k] = utils.nmap_encode_data(
                        utils.decode_b64(v.encode()))
                except (UnicodeDecodeError, TypeError, ValueError,
                        binascii.Error):
                    utils.LOGGER.warning(
                        "Incorrect value for field %r in record %r", k, spec)
    except ValueError:
        utils.LOGGER.warning("Incorrect value in message: %r", spec)
        return {}

    return {'infos': info}
Exemplo n.º 7
0
def _getinfos_http_client_authorization(spec):
    """Extract (for now) the usernames and passwords from Basic
    authorization headers
    """
    infos = {}
    data = spec['value'].split(None, 1)
    if data[1:]:
        if data[0].lower() == b'basic':
            try:
                infos['username'], infos['password'] = utils.decode_b64(
                    data[1].strip()
                ).decode('latin-1').split(':', 1)
            except Exception:
                pass
        elif data[0].lower() == 'digest':
            try:
                infos = dict(
                    value.split('=', 1) if '=' in value else [value, None]
                    for value in _split_digest_auth(data[1].strip())
                )
                for key, value in list(viewitems(infos)):
                    if value.startswith('"') and value.endswith('"'):
                        infos[key] = value[1:-1]
            except Exception:
                pass
    res = {}
    if infos:
        res['infos'] = infos
    return res
Exemplo n.º 8
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def _getinfos_cert(spec):
    """Extract info from a certificate (hash values, issuer, subject,
    algorithm) in an handy-to-index-and-query form.

    """
    try:
        cert = utils.decode_b64(spec.get('fullvalue', spec['value']).encode())
    except Exception:
        utils.LOGGER.info("Cannot parse certificate for record %r", spec,
                          exc_info=True)
        return {}
    info = utils.get_cert_info(cert)
    fullinfo = {}
    for key, value in list(viewitems(info)):
        if key in ['issuer', 'subject']:
            for skey, svalue in list(viewitems(value)):
                if len(svalue) > utils.MAXVALLEN:
                    fullinfo.setdefault(key, {})[skey] = svalue
                    info[key][skey] = svalue[:utils.MAXVALLEN]
        elif len(value) > utils.MAXVALLEN:
            fullinfo[key] = value
            info[key] = value[:utils.MAXVALLEN]
    res = {}
    if info:
        res['infos'] = info
    if fullinfo:
        res['fullinfos'] = fullinfo
    return res
Exemplo n.º 9
0
def _prepare_rec_ntlm(spec, new_recontype):
    """
    Decode NTLM messages in HTTP headers and split fingerprint from the other
    NTLM info in the spec
    """
    try:
        auth = utils.decode_b64(spec["value"].split(None, 1)[1].encode())
    except (UnicodeDecodeError, TypeError, ValueError, binascii.Error):
        utils.LOGGER.warning("_prepare_rec_ntlm(): cannot decode %r",
                             spec["value"],
                             exc_info=True)
        return
    spec["value"] = "%s %s" % (
        spec["value"].split(None, 1)[0],
        ntlm._ntlm_dict2string(ntlm.ntlm_extract_info(auth)),
    )
    # Separate the NTLM flags from the rest of the message's info
    # for NTLMSSP_NEGOTIAGE and NTLMSSP_CHALLENGE messages
    if spec["value"].startswith("NTLM ntlm-fingerprint"):
        fingerprint = spec.copy()
        fingerprint["recontype"] = new_recontype
        try:
            fingerprint["value"], spec["value"] = spec["value"].split(",", 1)
        except ValueError:
            spec["value"] = ""
        else:
            spec["value"] = "NTLM %s" % spec["value"]
        fingerprint["value"] = fingerprint["value"][5:]
        yield fingerprint
    yield spec
Exemplo n.º 10
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def _getinfos_smb(spec):
    """
    Get information on an OS from SMB `Session Setup Request` and
    `Session Setup Response`
    """
    info = {}
    try:
        for k, v in (item.split(':', 1) for item in spec['value'].split(',')):
            if k == 'is_guest':
                try:
                    info[k] = v == 'true'
                except ValueError:
                    utils.LOGGER.warning(
                        "Incorrect value for field %r in record %r", k, spec)
            else:
                try:
                    info[k] = utils.nmap_encode_data(
                        utils.decode_b64(v.encode()))
                except (UnicodeDecodeError, TypeError, ValueError,
                        binascii.Error):
                    utils.LOGGER.warning(
                        "Incorrect value for field %r in record %r", k, spec)
    except ValueError:
        utils.LOGGER.warning("Incorrect value in message: %r", spec)
        return {}

    return {'infos': info}
Exemplo n.º 11
0
def _getinfos_cert(spec):
    """Extract info from a certificate (hash values, issuer, subject,
    algorithm) in an handy-to-index-and-query form.

    """
    infos = {}
    fullinfos = {}
    try:
        cert = utils.decode_b64(spec.get('fullvalue', spec['value']))
    except Exception:
        return {}
    for hashtype in ['md5', 'sha1']:
        infos['%shash' % hashtype] = hashlib.new(hashtype, cert).hexdigest()
    proc = subprocess.Popen(['openssl', 'x509', '-noout', '-text',
                             '-inform', 'DER'], stdin=subprocess.PIPE,
                            stdout=subprocess.PIPE)
    proc.stdin.write(cert)
    proc.stdin.close()
    try:
        newinfos = _CERTINFOS.search(proc.stdout.read()).groupdict()
        newfullinfos = {}
        for field in newinfos:
            if len(newinfos[field]) > utils.MAXVALLEN:
                newfullinfos[field] = newinfos[field]
                newinfos[field] = newinfos[field][:utils.MAXVALLEN]
        infos.update(newinfos)
        fullinfos.update(newfullinfos)
    except Exception:
        pass
    res = {}
    if infos:
        res['infos'] = infos
    if fullinfos:
        res['fullinfos'] = fullinfos
    return res
Exemplo n.º 12
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 def getkeys(self, host):
     for script in self.getscripts(host):
         for key in script['script'][self.scriptid]:
             if key['type'][4:] == self.keytype:
                 data = utils.decode_b64(key['key'])
                 # Handle bug (in Nmap?) where data gets encoded
                 # twice.
                 if data[0] != b'\x00':
                     data = utils.decode_b64(data)
                 yield Key(
                     utils.int2ip(host['addr']), script["port"], "ssh",
                     key['type'][4:],
                     int(key['bits']),
                     self.data2key(data),
                     utils.decode_hex(key['fingerprint']),
                 )
Exemplo n.º 13
0
def _getinfos_http_client_authorization(spec):
    """Extract (for now) the usernames and passwords from Basic
    authorization headers
    """
    infos = {}
    data = spec['value'].split(None, 1)
    if data[1:]:
        if data[0].lower() == b'basic':
            try:
                infos['username'], infos['password'] = utils.decode_b64(
                    data[1].strip()
                ).decode('latin-1').split(':', 1)
            except Exception:
                pass
        elif data[0].lower() == 'digest':
            try:
                infos = dict(
                    value.split('=', 1) if '=' in value else [value, None]
                    for value in _split_digest_auth(data[1].strip())
                )
                for key, value in list(viewitems(infos)):
                    if value.startswith('"') and value.endswith('"'):
                        infos[key] = value[1:-1]
            except Exception:
                pass
    res = {}
    if infos:
        res['infos'] = infos
    return res
Exemplo n.º 14
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def _getinfos_ntlm(spec):
    """
    Get information from NTLMSSP messages
    """
    value = spec["value"]
    try:
        val1, val2 = value.split(None, 1)
    except ValueError:
        pass
    else:
        if val1.lower() in {"ntlm", "negotiate"} and val2:
            value = val2
    info = {}
    try:
        for k, v in (item.split(":", 1) for item in value.split(",")):
            if k == "NTLM_Version":
                info[k] = v
            else:
                try:
                    info[k] = utils.nmap_encode_data(
                        utils.decode_b64(v.encode()))
                except (UnicodeDecodeError, TypeError, ValueError,
                        binascii.Error):
                    utils.LOGGER.warning(
                        "Incorrect value for field %r in record %r", k, spec)
    except ValueError:
        utils.LOGGER.warning("Incorrect value in message: %r", spec)
        return {}

    return {"infos": info}
Exemplo n.º 15
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 def getkeys(self, host):
     for script in self.getscripts(host):
         for key in script['script'][self.scriptid]:
             if key['type'][4:] == self.keytype:
                 data = utils.decode_b64(key['key'].encode())
                 # Handle bug (in Nmap?) where data gets encoded
                 # twice.
                 if data[:1] != b'\x00':
                     data = utils.decode_b64(data)
                 yield Key(
                     host['addr'], script["port"], "ssh", key['type'][4:],
                     int(float(key['bits'])),  # for some reason,
                                               # Nmap sometimes
                                               # outputs 1024.0
                     self.data2key(data),
                     utils.decode_hex(key['fingerprint']),
                 )
Exemplo n.º 16
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def _getinfos_ssh_hostkey(spec):
    """Parse SSH host keys."""
    infos = {}
    data = utils.decode_b64(spec["value"].encode())
    for hashtype in ["md5", "sha1", "sha256"]:
        infos[hashtype] = hashlib.new(hashtype, data).hexdigest()
    info = utils.parse_ssh_key(data)
    return {"infos": info}
Exemplo n.º 17
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 def read_pem(self, pem):
     pem = utils.decode_b64(self.pem_borders.sub(b"", pem))
     proc = subprocess.Popen(['openssl', 'x509', '-noout', '-text',
                              '-inform', 'DER'], stdin=subprocess.PIPE,
                             stdout=subprocess.PIPE)
     proc.stdin.write(pem)
     proc.stdin.close()
     return proc.stdout.read()
Exemplo n.º 18
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 def getkeys(self, host):
     for script in self.getscripts(host):
         for key in script['script'][self.scriptid]:
             if key['type'][4:] == self.keytype:
                 data = utils.decode_b64(key['key'].encode())
                 # Handle bug (in Nmap?) where data gets encoded
                 # twice.
                 if data[:1] != b'\x00':
                     data = utils.decode_b64(data)
                 yield Key(
                     host['addr'], script["port"], "ssh", key['type'][4:],
                     int(float(key['bits'])),  # for some reason,
                                               # Nmap sometimes
                                               # outputs 1024.0
                     self.data2key(data),
                     utils.decode_hex(key['fingerprint']),
                 )
Exemplo n.º 19
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 def read_pem(self, pem):
     pem = utils.decode_b64(self.pem_borders.sub(b"", pem))
     proc = subprocess.Popen(
         ['openssl', 'x509', '-noout', '-text', '-inform', 'DER'],
         stdin=subprocess.PIPE,
         stdout=subprocess.PIPE)
     proc.stdin.write(pem)
     proc.stdin.close()
     return proc.stdout.read()
Exemplo n.º 20
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 def getkeys(self, host):
     for script in self.getscripts(host):
         for key in script['script'][self.scriptid]:
             if key['type'][4:] == self.keytype:
                 data = utils.decode_b64(key['key'])
                 # Handle bug (in Nmap?) where data gets encoded
                 # twice.
                 if data[0] != b'\x00':
                     data = utils.decode_b64(data)
                 yield Key(
                     utils.int2ip(host['addr']),
                     script["port"],
                     "ssh",
                     key['type'][4:],
                     int(key['bits']),
                     self.data2key(data),
                     utils.decode_hex(key['fingerprint']),
                 )
Exemplo n.º 21
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Arquivo: keys.py Projeto: ivre/ivre
 def getkeys(self, record: Record) -> Generator[Key, None, None]:
     for script in self.getscripts(record):
         assert isinstance(script["script"], dict)
         for key in script["script"][self.scriptid]:
             if key["type"][4:] == self.keytype:
                 data = utils.decode_b64(key["key"].encode())
                 # Handle bug (in Nmap?) where data gets encoded
                 # twice.
                 if data[:1] != b"\x00":
                     data = utils.decode_b64(data)
                 yield Key(
                     record["addr"],
                     script["port"],
                     "ssh",
                     key["type"][4:],
                     int(float(key["bits"])),  # for some reason,
                     # Nmap sometimes
                     # outputs 1024.0
                     self.data2key(data),
                     utils.decode_hex(key["fingerprint"]),
                 )
Exemplo n.º 22
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 def read_pem(cls, pem):
     try:
         pem = pem.encode()
     except AttributeError:
         pass
     pem = utils.decode_b64(cls.pem_borders.sub(b"", pem))
     proc = subprocess.Popen([config.OPENSSL_CMD, 'x509', '-noout', '-text',
                              '-inform', 'DER'], stdin=subprocess.PIPE,
                             stdout=subprocess.PIPE)
     proc.stdin.write(pem)
     proc.stdin.close()
     return proc.stdout.read()
Exemplo n.º 23
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 def read_pem(cls, pem):
     try:
         pem = pem.encode()
     except AttributeError:
         pass
     pem = utils.decode_b64(cls.pem_borders.sub(b"", pem))
     proc = subprocess.Popen([config.OPENSSL_CMD, 'x509', '-noout', '-text',
                              '-inform', 'DER'], stdin=subprocess.PIPE,
                             stdout=subprocess.PIPE)
     proc.stdin.write(pem)
     proc.stdin.close()
     return proc.stdout.read()
Exemplo n.º 24
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def _getinfos_ntlm(spec):
    """
    Get infos from the NTLMSSP_CHALLENGE matching the smb-os-discovery scripts
    form Masscan and Nmap
    """
    return {
        'infos': {
            k: (int(v) if k == 'ntlm-version' else utils.decode_b64(
                v.encode()).decode())
            for k, v in (item.split(':', 1)
                         for item in spec['value'].split(',')) if v
        }
    }
Exemplo n.º 25
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def _is_ntlm_message(message):
    """
    Checks whether the given string is an NTLM message
    """
    if message[:4].lower() == 'ntlm' and message[4:].strip():
        return True
    if message[:9].lower() == 'negotiate':
        message = message.split(None, 1)
        if message[1:]:
            try:
                return utils.decode_b64(message[1].encode())[:7] == b'NTLMSSP'
            except (UnicodeDecodeError, TypeError, ValueError, binascii.Error):
                pass
    return False
Exemplo n.º 26
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def _getinfos_cert(spec):
    """Extract info from a certificate (hash values, issuer, subject,
    algorithm) in an handy-to-index-and-query form.

    """
    # TODO: move to mongodb specific functions.
    try:
        cert = utils.decode_b64(spec["value"].encode())
    except Exception:
        utils.LOGGER.info("Cannot parse certificate for record %r", spec, exc_info=True)
        return {}
    info = utils.get_cert_info(cert)
    res = {}
    if info:
        res["infos"] = info
    return res
Exemplo n.º 27
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Arquivo: keys.py Projeto: ivre/ivre
 def read_pem(cls, pem: AnyStr) -> bytes:
     if isinstance(pem, str):
         raw_cert = pem.encode()
     else:
         raw_cert = pem
     raw_cert = utils.decode_b64(cls.pem_borders.sub(b"", raw_cert))
     with subprocess.Popen(
         [config.OPENSSL_CMD, "x509", "-noout", "-text", "-inform", "DER"],
             stdin=subprocess.PIPE,
             stdout=subprocess.PIPE,
     ) as proc:
         assert proc.stdin is not None
         assert proc.stdout is not None
         proc.stdin.write(raw_cert)
         proc.stdin.close()
         return proc.stdout.read()
Exemplo n.º 28
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def _getinfos_cert(spec):
    """Extract info from a certificate (hash values, issuer, subject,
    algorithm) in an handy-to-index-and-query form.

    """
    # TODO: move to mongodb specific functions.
    try:
        cert = utils.decode_b64(spec['value'].encode())
    except Exception:
        utils.LOGGER.info("Cannot parse certificate for record %r", spec,
                          exc_info=True)
        return {}
    info = utils.get_cert_info(cert)
    res = {}
    if info:
        res['infos'] = info
    return res
Exemplo n.º 29
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Arquivo: keys.py Projeto: psyray/ivre
    def getkeys(self, record: Filter) -> Generator[Key, None, None]:
        certtext = self._der2key(utils.decode_b64(record["value"].encode()))
        if certtext is None:
            return

        yield Key(
            record["addr"],
            record["port"],
            "ssl",
            certtext["type"],
            int(certtext["len"]),
            _rsa_construct(
                int(certtext["exponent"]),
                int(MODULUS_BADCHARS.sub(b"", certtext["modulus"]), 16),
            ),
            utils.decode_hex(record["infos"]["md5"]),
        )
Exemplo n.º 30
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def _is_ntlm_message(message):
    """
    Checks whether the given string is an NTLM message
    """
    try:
        val1, val2 = message.split(None, 1)
    except ValueError:
        return False
    else:
        if not val2:
            return False
        if val1.lower() == "ntlm":
            return True
        if val1.lower() == "negotiate":
            try:
                return utils.decode_b64(val2.encode())[:7] == b"NTLMSSP"
            except (UnicodeDecodeError, TypeError, ValueError, binascii.Error):
                pass
    return False
Exemplo n.º 31
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def _getinfos_cert(spec, to_binary):
    """Extract info from a certificate (hash values, issuer, subject,
    algorithm) in an handy-to-index-and-query form.

    """
    try:
        cert = utils.decode_b64(spec.pop('fullvalue', spec['value']).encode())
    except Exception:
        utils.LOGGER.info("Cannot parse certificate for record %r",
                          spec,
                          exc_info=True)
        return {}
    if len(cert) > utils.MAXVALLEN:
        spec['fullvalue'] = to_binary(cert)
        spec['value'] = hashlib.sha1(cert).hexdigest()
    else:
        spec['value'] = to_binary(cert)
    info = utils.get_cert_info(cert)
    fullinfo = {}
    for key, value in list(viewitems(info)):
        if key in ['issuer', 'subject']:
            for skey, svalue in list(viewitems(value)):
                # We enforce a utils.MAXVALLEN // 10 size limits for
                # subkey values in subject and issuer; this is because
                # MongoDB cannot index values longer than 1024 bytes,
                # and subject and issuer fields may have more than one
                # key.
                if len(svalue) > utils.MAXVALLEN // 10:
                    fullinfo.setdefault(key, {})[skey] = svalue
                    info[key][skey] = svalue[:utils.MAXVALLEN // 10]
        elif len(value) > utils.MAXVALLEN:
            fullinfo[key] = value
            info[key] = value[:utils.MAXVALLEN]
    res = {}
    if info:
        res['infos'] = info
    if fullinfo:
        res['fullinfos'] = fullinfo
    return res
Exemplo n.º 32
0
def zgrap_parser_http(data, hostrec, port=None):
    """This function handles data from `{"data": {"http": [...]}}`
    records. `data` should be the content, i.e. the `[...]`. It should
    consist of simple dictionary, that may contain a `"response"` key
    and/or a `"redirect_response_chain"` key.

    The output is a port dict (i.e., the content of the "ports" key of an
    `nmap` of `view` record in IVRE), that may be empty.

    """
    if not data:
        return {}
    # for zgrab2 results
    if "result" in data:
        data.update(data.pop("result"))
    if "response" not in data:
        utils.LOGGER.warning('Missing "response" field in zgrab HTTP result')
        return {}
    resp = data["response"]
    needed_fields = set(["request", "status_code", "status_line"])
    missing_fields = needed_fields.difference(resp)
    if missing_fields:
        utils.LOGGER.warning(
            "Missing field%s %s in zgrab HTTP result",
            "s" if len(missing_fields) > 1 else "",
            ", ".join(repr(fld) for fld in missing_fields),
        )
        return {}
    req = resp["request"]
    url = req.get("url")
    res = {
        "service_name": "http",
        "service_method": "probed",
        "state_state": "open",
        "state_reason": "response",
        "protocol": "tcp",
    }
    tls = None
    try:
        tls = req["tls_handshake"]
    except KeyError:
        # zgrab2
        try:
            tls = req["tls_log"]["handshake_log"]
        except KeyError:
            pass
    if tls is not None:
        res["service_tunnel"] = "ssl"
        try:
            cert = tls["server_certificates"]["certificate"]["raw"]
        except KeyError:
            pass
        else:
            output, info = create_ssl_cert(cert.encode(), b64encoded=True)
            if info:
                res.setdefault("scripts", []).append(
                    {
                        "id": "ssl-cert",
                        "output": output,
                        "ssl-cert": info,
                    }
                )
                for cert in info:
                    add_cert_hostnames(cert, hostrec.setdefault("hostnames", []))
    if url:
        guessed_port = None
        if ":" in url.get("host", ""):
            try:
                guessed_port = int(url["host"].split(":", 1)[1])
            except ValueError:
                pass
        if port is None:
            if guessed_port is None:
                if url.get("scheme") == "https":
                    port = 443
                else:
                    port = 80
            else:
                port = guessed_port
        elif port != guessed_port:
            utils.LOGGER.warning(
                "Port %d found from the URL %s differs from the provided port "
                "value %d",
                guessed_port,
                url.get("path"),
                port,
            )
            port = guessed_port
        # Specific paths
        if url.get("path").endswith("/.git/index"):
            if resp.get("status_code") != 200:
                return {}
            if not resp.get("body", "").startswith("DIRC"):
                return {}
            # Due to an issue with ZGrab2 output, we cannot, for now,
            # process the content of the file. See
            # <https://github.com/zmap/zgrab2/issues/263>.
            repository = "%s:%d%s" % (hostrec["addr"], port, url["path"][:-5])
            res["port"] = port
            res.setdefault("scripts", []).append(
                {
                    "id": "http-git",
                    "output": "\n  %s\n    Git repository found!\n" % repository,
                    "http-git": [
                        {"repository": repository, "files-found": [".git/index"]}
                    ],
                }
            )
            return res
        if url.get("path").endswith("/owa/auth/logon.aspx"):
            if resp.get("status_code") != 200:
                return {}
            version = set(
                m.group(1) for m in _EXPR_OWA_VERSION.finditer(resp.get("body", ""))
            )
            if not version:
                return {}
            version = sorted(version, key=lambda v: [int(x) for x in v.split(".")])
            res["port"] = port
            path = url["path"][:-15]
            if len(version) > 1:
                output = "OWA: path %s, version %s (multiple versions found!)" % (
                    path,
                    " / ".join(version),
                )
            else:
                output = "OWA: path %s, version %s" % (path, version[0])
            res.setdefault("scripts", []).append(
                {
                    "id": "http-app",
                    "output": output,
                    "http-app": [
                        {"path": path, "application": "OWA", "version": version[0]}
                    ],
                }
            )
            return res
        if url.get("path").endswith("/centreon/"):
            if resp.get("status_code") != 200:
                return {}
            if not resp.get("body"):
                return {}
            body = resp["body"]
            res["port"] = port
            path = url["path"]
            match = _EXPR_TITLE.search(body)
            if match is None:
                return {}
            if match.groups()[0] != "Centreon - IT & Network Monitoring":
                return {}
            match = _EXPR_CENTREON_VERSION.search(body)
            if match is None:
                version = None
            else:
                version = match.group(1) or match.group(2)
            res.setdefault("scripts", []).append(
                {
                    "id": "http-app",
                    "output": "Centreon: path %s%s"
                    % (
                        path,
                        "" if version is None else (", version %s" % version),
                    ),
                    "http-app": [
                        dict(
                            {"path": path, "application": "Centreon"},
                            **({} if version is None else {"version": version}),
                        )
                    ],
                }
            )
            return res
        if url.get("path") != "/":
            utils.LOGGER.warning("URL path not supported yet: %s", url.get("path"))
            return {}
    elif port is None:
        if req.get("tls_handshake") or req.get("tls_log"):
            port = 443
        else:
            port = 80
    res["port"] = port
    # Since Zgrab does not preserve the order of the headers, we need
    # to reconstruct a banner to use Nmap fingerprints
    banner = (
        utils.nmap_decode_data(resp["protocol"]["name"])
        + b" "
        + utils.nmap_decode_data(resp["status_line"])
        + b"\r\n"
    )
    if resp.get("headers"):
        headers = resp["headers"]
        # Check the Authenticate header first: if we requested it with
        # an Authorization header, we don't want to gather other information
        if headers.get("www_authenticate"):
            auths = headers.get("www_authenticate")
            for auth in auths:
                if ntlm._is_ntlm_message(auth):
                    try:
                        infos = ntlm.ntlm_extract_info(
                            utils.decode_b64(auth.split(None, 1)[1].encode())
                        )
                    except (UnicodeDecodeError, TypeError, ValueError, binascii.Error):
                        pass
                    keyvals = zip(ntlm_values, [infos.get(k) for k in ntlm_values])
                    output = "\n".join("{}: {}".format(k, v) for k, v in keyvals if v)
                    res.setdefault("scripts", []).append(
                        {"id": "http-ntlm-info", "output": output, "ntlm-info": infos}
                    )
                    if "DNS_Computer_Name" in infos:
                        add_hostname(
                            infos["DNS_Computer_Name"],
                            "ntlm",
                            hostrec.setdefault("hostnames", []),
                        )
        if any(
            val.lower().startswith("ntlm")
            for val in req.get("headers", {}).get("authorization", [])
        ):
            return res
        # the order will be incorrect!
        line = "%s %s" % (resp["protocol"]["name"], resp["status_line"])
        http_hdrs = [{"name": "_status", "value": line}]
        output = [line]
        for unk in headers.pop("unknown", []):
            headers[unk["key"]] = unk["value"]
        for hdr, values in headers.items():
            hdr = hdr.replace("_", "-")
            for val in values:
                http_hdrs.append({"name": hdr, "value": val})
                output.append("%s: %s" % (hdr, val))
        if http_hdrs:
            method = req.get("method")
            if method:
                output.append("")
                output.append("(Request type: %s)" % method)
            res.setdefault("scripts", []).append(
                {
                    "id": "http-headers",
                    "output": "\n".join(output),
                    "http-headers": http_hdrs,
                }
            )
            handle_http_headers(hostrec, res, http_hdrs, path=url.get("path"))
        if headers.get("server"):
            banner += (
                b"Server: " + utils.nmap_decode_data(headers["server"][0]) + b"\r\n\r\n"
            )
    info = utils.match_nmap_svc_fp(banner, proto="tcp", probe="GetRequest")
    if info:
        add_cpe_values(hostrec, "ports.port:%s" % port, info.pop("cpe", []))
        res.update(info)
    if resp.get("body"):
        body = resp["body"]
        res.setdefault("scripts", []).append(
            {
                "id": "http-content",
                "output": utils.nmap_encode_data(body.encode()),
            }
        )
        match = _EXPR_TITLE.search(body)
        if match is not None:
            title = match.groups()[0]
            res["scripts"].append(
                {
                    "id": "http-title",
                    "output": title,
                    "http-title": {"title": title},
                }
            )
        script_http_ls = create_http_ls(body, url=url)
        if script_http_ls is not None:
            res.setdefault("scripts", []).append(script_http_ls)
        service_elasticsearch = create_elasticsearch_service(body)
        if service_elasticsearch:
            if "hostname" in service_elasticsearch:
                add_hostname(
                    service_elasticsearch.pop("hostname"),
                    "service",
                    hostrec.setdefault("hostnames", []),
                )
            add_cpe_values(
                hostrec, "ports.port:%s" % port, service_elasticsearch.pop("cpe", [])
            )
            res.update(service_elasticsearch)
    return res
Exemplo n.º 33
0
 def from_binary(data):
     return utils.decode_b64(data.encode())
Exemplo n.º 34
0
def _prepare_rec(spec, ignorenets, neverignore):
    # First of all, let's see if we are supposed to ignore this spec,
    # and if so, do so.
    if 'addr' in spec and \
       spec.get('source') not in neverignore.get(spec['recontype'], []):
        for start, stop in ignorenets.get(spec['recontype'], ()):
            if start <= utils.force_ip2int(spec['addr']) <= stop:
                return None
    # Then, let's clean up the records.
    # Change Symantec's random user agents (matching SYMANTEC_UA) to
    # the constant string 'SymantecRandomUserAgent'.
    if spec['recontype'] == 'HTTP_CLIENT_HEADER' and \
       spec.get('source') == 'USER-AGENT':
        if SYMANTEC_UA.match(spec['value']):
            spec['value'] = 'SymantecRandomUserAgent'
        elif KASPERSKY_UA.match(spec['value']):
            spec['value'] = 'KasperskyWeirdUserAgent'
        else:
            match = SYMANTEC_SEP_UA.match(spec['value'])
            if match is not None:
                spec['value'] = '%s%s' % match.groups()
    # Change any Digest authorization header to remove non-constant
    # information. On one hand we loose the necessary information to
    # try to recover the passwords, but on the other hand we store
    # specs with different challenges but the same username, realm,
    # host and sensor in the same records.
    elif (spec['recontype']
          in {'HTTP_CLIENT_HEADER', 'HTTP_CLIENT_HEADER_SERVER'}
          and spec.get('source') in {'AUTHORIZATION', 'PROXY-AUTHORIZATION'}):
        value = spec['value']
        if value:
            authtype = value.split(None, 1)[0]
            if authtype.lower() == 'digest':
                try:
                    # we only keep relevant info
                    spec['value'] = '%s %s' % (authtype, ','.join(
                        val for val in _split_digest_auth(value[6:].strip())
                        if DIGEST_AUTH_INFOS.match(val)))
                except Exception:
                    utils.LOGGER.warning("Cannot parse digest error for %r",
                                         spec,
                                         exc_info=True)
            elif ntlm._is_ntlm_message(value):
                # NTLM_NEGOTIATE and NTLM_AUTHENTICATE
                try:
                    auth = utils.decode_b64(value.split(None, 1)[1].encode())
                except (UnicodeDecodeError, TypeError, ValueError,
                        binascii.Error):
                    pass
                spec['value'] = "%s %s" % \
                    (value.split(None, 1)[0],
                     ntlm._ntlm_dict2string(ntlm.ntlm_extract_info(auth)))
            elif authtype.lower() in {'negotiate', 'kerberos', 'oauth'}:
                spec['value'] = authtype
    elif (spec['recontype'] == 'HTTP_SERVER_HEADER' and spec.get('source')
          in {'WWW-AUTHENTICATE', 'PROXY-AUTHENTICATE'}):
        value = spec['value']
        if value:
            authtype = value.split(None, 1)[0]
            if authtype.lower() == 'digest':
                try:
                    # we only keep relevant info
                    spec['value'] = '%s %s' % (authtype, ','.join(
                        val for val in _split_digest_auth(value[6:].strip())
                        if DIGEST_AUTH_INFOS.match(val)))
                except Exception:
                    utils.LOGGER.warning("Cannot parse digest error for %r",
                                         spec,
                                         exc_info=True)
            elif ntlm._is_ntlm_message(value):
                # NTLM_CHALLENGE
                try:
                    auth = utils.decode_b64(value.split(None, 1)[1].encode())
                except (UnicodeDecodeError, TypeError, ValueError,
                        binascii.Error):
                    pass
                spec['value'] = "%s %s" % \
                    (value.split(None, 1)[0],
                     ntlm._ntlm_dict2string(ntlm.ntlm_extract_info(auth)))
            elif authtype.lower() in {'negotiate', 'kerberos', 'oauth'}:
                spec['value'] = authtype
    # TCP server banners: try to normalize data
    elif spec['recontype'] == 'TCP_SERVER_BANNER':
        newvalue = value = utils.nmap_decode_data(spec['value'])
        for pattern, replace in TCP_SERVER_PATTERNS:
            if pattern.search(newvalue):
                newvalue = pattern.sub(replace, newvalue)
        if newvalue != value:
            spec['value'] = utils.nmap_encode_data(newvalue)
    elif spec['recontype'] == 'TCP_CLIENT_BANNER':
        probe = utils.get_nmap_probes('tcp').get(
            utils.nmap_decode_data(spec['value']))
        if probe is not None:
            spec.setdefault('infos', {}).update({
                'service_name':
                'scanner',
                'service_product':
                'Nmap',
                'service_extrainfo':
                'TCP probe %s' % probe,
            })
    elif spec['recontype'] == 'UDP_HONEYPOT_HIT':
        data = utils.nmap_decode_data(spec['value'])
        probe = utils.get_nmap_probes('udp').get(data)
        if probe is not None:
            spec.setdefault('infos', {}).update({
                'service_name':
                'scanner',
                'service_product':
                'Nmap',
                'service_extrainfo':
                'UDP probe %s' % probe,
            })
        else:
            payload = utils.get_nmap_udp_payloads().get(data)
            if payload is not None:
                spec.setdefault('infos', {}).update({
                    'service_name':
                    'scanner',
                    'service_product':
                    'Nmap',
                    'service_extrainfo':
                    'UDP payload %s' % payload,
                })
    # SSL_{CLIENT,SERVER} JA3
    elif ((spec['recontype'] == 'SSL_CLIENT' and spec['source'] == 'ja3')
          or (spec['recontype'] == 'SSL_SERVER'
              and spec['source'].startswith('ja3-'))):
        value = spec['value']
        spec.setdefault('infos', {})['raw'] = value
        spec['value'] = hashlib.new("md5", value.encode()).hexdigest()
        if spec['recontype'] == 'SSL_SERVER':
            clientvalue = spec['source'][4:]
            spec['infos'].setdefault('client', {})['raw'] = clientvalue
            spec['source'] = 'ja3-%s' % hashlib.new(
                "md5",
                clientvalue.encode(),
            ).hexdigest()
    # SSH_{CLIENT,SERVER}_HASSH
    elif spec['recontype'] in ['SSH_CLIENT_HASSH', 'SSH_SERVER_HASSH']:
        value = spec['value']
        spec.setdefault('infos', {})['raw'] = value
        spec['value'] = hashlib.new("md5", value.encode()).hexdigest()
    # Check DNS Blacklist answer
    elif spec['recontype'] == 'DNS_ANSWER':
        if any((spec.get('value') or "").endswith(dnsbl)
               for dnsbl in config.DNS_BLACKLIST_DOMAINS):
            dnsbl_val = spec['value']
            match = DNSBL_START.search(dnsbl_val)
            if match is not None:
                spec['recontype'] = 'DNS_BLACKLIST'
                spec['value'] = spec.get('addr')
                spec.update({
                    'source':
                    "%s-%s" % (dnsbl_val[match.end():], spec['source'])
                })
                addr = match.group()
                # IPv4
                if addr.count('.') == 4:
                    spec['addr'] = '.'.join(addr.split('.')[3::-1])
                # IPv6
                else:
                    spec['addr'] = utils.int2ip6(
                        int(addr.replace('.', '')[::-1], 16))
    return spec
Exemplo n.º 35
0
def zgrap_parser_http(data: Dict[str, Any],
                      hostrec: NmapHost,
                      port: Optional[int] = None) -> NmapPort:
    """This function handles data from `{"data": {"http": [...]}}`
    records. `data` should be the content, i.e. the `[...]`. It should
    consist of simple dictionary, that may contain a `"response"` key
    and/or a `"redirect_response_chain"` key.

    The output is a port dict (i.e., the content of the "ports" key of an
    `nmap` of `view` record in IVRE), that may be empty.

    """
    if not data:
        return {}
    # for zgrab2 results
    if "result" in data:
        data.update(data.pop("result"))
    if "response" not in data:
        utils.LOGGER.warning('Missing "response" field in zgrab HTTP result')
        return {}
    resp = data["response"]
    needed_fields = set(["request", "status_code", "status_line"])
    missing_fields = needed_fields.difference(resp)
    if missing_fields:
        utils.LOGGER.warning(
            "Missing field%s %s in zgrab HTTP result",
            "s" if len(missing_fields) > 1 else "",
            ", ".join(repr(fld) for fld in missing_fields),
        )
        return {}
    req = resp["request"]
    url = req.get("url")
    res: NmapPort = {
        "service_name": "http",
        "service_method": "probed",
        "state_state": "open",
        "state_reason": "response",
        "protocol": "tcp",
    }
    tls = None
    try:
        tls = req["tls_handshake"]
    except KeyError:
        # zgrab2
        try:
            tls = req["tls_log"]["handshake_log"]
        except KeyError:
            pass
    if tls is not None:
        res["service_tunnel"] = "ssl"
        try:
            cert = tls["server_certificates"]["certificate"]["raw"]
        except KeyError:
            pass
        else:
            output, info_cert = create_ssl_cert(cert.encode(), b64encoded=True)
            if info_cert:
                res.setdefault("scripts", []).append({
                    "id": "ssl-cert",
                    "output": output,
                    "ssl-cert": info_cert,
                })
                for cert in info_cert:
                    add_cert_hostnames(cert,
                                       hostrec.setdefault("hostnames", []))
    if url:
        try:
            _, guessed_port = utils.url2hostport("%(scheme)s://%(host)s" % url)
        except ValueError:
            utils.LOGGER.warning("Cannot guess port from url %r", url)
            guessed_port = 80  # because reasons
        else:
            if port is not None and port != guessed_port:
                utils.LOGGER.warning(
                    "Port %d found from the URL %s differs from the provided port "
                    "value %d",
                    guessed_port,
                    url.get("path"),
                    port,
                )
                port = guessed_port
        if port is None:
            port = guessed_port
        # Specific paths
        if url.get("path").endswith("/.git/index"):
            if resp.get("status_code") != 200:
                return {}
            if not resp.get("body", "").startswith("DIRC"):
                return {}
            # Due to an issue with ZGrab2 output, we cannot, for now,
            # process the content of the file. See
            # <https://github.com/zmap/zgrab2/issues/263>.
            repository = "%s:%d%s" % (hostrec["addr"], port, url["path"][:-5])
            res["port"] = port
            res.setdefault("scripts", []).append({
                "id":
                "http-git",
                "output":
                "\n  %s\n    Git repository found!\n" % repository,
                "http-git": [
                    {
                        "repository": repository,
                        "files-found": [".git/index"]
                    },
                ],
            })
            return res
        if url.get("path").endswith("/owa/auth/logon.aspx"):
            if resp.get("status_code") != 200:
                return {}
            version_set = set(
                m.group(1)
                for m in _EXPR_OWA_VERSION.finditer(resp.get("body", "")))
            if not version_set:
                return {}
            version_list = sorted(version_set,
                                  key=lambda v: [int(x) for x in v.split(".")])
            res["port"] = port
            path = url["path"][:-15]
            if version_list:
                parsed_version = EXCHANGE_BUILDS.get(version_list[0],
                                                     "unknown build number")
                if len(version_list) > 1:
                    version_list = [
                        "%s (%s)" %
                        (vers, EXCHANGE_BUILDS.get(vers,
                                                   "unknown build number"))
                        for vers in version_list
                    ]
                    output = "OWA: path %s, version %s (multiple versions found!)" % (
                        path,
                        " / ".join(version_list),
                    )
                else:
                    output = "OWA: path %s, version %s (%s)" % (
                        path,
                        version_list[0],
                        parsed_version,
                    )
                res.setdefault("scripts", []).append({
                    "id":
                    "http-app",
                    "output":
                    output,
                    "http-app": [{
                        "path": path,
                        "application": "OWA",
                        "version": version_list[0],
                        "parsed_version": parsed_version,
                    }],
                })
            return res
        if url.get("path").endswith("/centreon/"):
            if resp.get("status_code") != 200:
                return {}
            if not resp.get("body"):
                return {}
            body = resp["body"]
            res["port"] = port
            path = url["path"]
            match = _EXPR_TITLE.search(body)
            if match is None:
                return {}
            if match.groups()[0] != "Centreon - IT & Network Monitoring":
                return {}
            match = _EXPR_CENTREON_VERSION.search(body)
            version: Optional[str]
            if match is None:
                version = None
            else:
                version = match.group(1) or match.group(2)
            res.setdefault("scripts", []).append({
                "id":
                "http-app",
                "output":
                "Centreon: path %s%s" % (
                    path,
                    "" if version is None else (", version %s" % version),
                ),
                "http-app": [
                    dict(
                        {
                            "path": path,
                            "application": "Centreon"
                        },
                        **({} if version is None else {
                            "version": version
                        }),
                    )
                ],
            })
            return res
        if url.get("path").endswith("/.well-known/security.txt"):
            if resp.get("status_code") != 200:
                return {}
            if not resp.get("headers"):
                return {}
            if not any(
                    ctype.split(";", 1)[0].lower() == "text/plain"
                    for ctype in resp["headers"].get("content_type", [])):
                return {}
            if not resp.get("body"):
                return {}
            body = resp["body"]
            res["port"] = port
            parsed: Dict[str, List[str]] = {}
            for line in body.splitlines():
                line = line.strip().split("#", 1)[0]
                if not line:
                    continue
                if ":" not in line:
                    utils.LOGGER.warning(
                        "Invalid line in security.txt file [%r]", line)
                    continue
                key, value = line.split(":", 1)
                parsed.setdefault(key.strip().lower(),
                                  []).append(value.strip())
            res.setdefault("scripts", []).append({
                "id": "http-securitytxt",
                "output": body,
                "http-securitytxt":
                {key: " / ".join(value)
                 for key, value in parsed.items()},
            })
            return res
        if url.get("path") != "/":
            utils.LOGGER.warning("URL path not supported yet: %s",
                                 url.get("path"))
            return {}
    elif port is None:
        if req.get("tls_handshake") or req.get("tls_log"):
            port = 443
        else:
            port = 80
    res["port"] = port
    # Since Zgrab does not preserve the order of the headers, we need
    # to reconstruct a banner to use Nmap fingerprints
    if resp.get("headers"):
        headers = resp["headers"]
        # Check the Authenticate header first: if we requested it with
        # an Authorization header, we don't want to gather other information
        if headers.get("www_authenticate"):
            auths = headers.get("www_authenticate")
            for auth in auths:
                if ntlm._is_ntlm_message(auth):
                    try:
                        infos = ntlm.ntlm_extract_info(
                            utils.decode_b64(auth.split(None, 1)[1].encode()))
                    except (UnicodeDecodeError, TypeError, ValueError,
                            binascii.Error):
                        continue
                    if not infos:
                        continue
                    keyvals = zip(ntlm_values,
                                  [infos.get(k) for k in ntlm_values])
                    output = "\n".join("{}: {}".format(k, v)
                                       for k, v in keyvals if v)
                    res.setdefault("scripts", []).append({
                        "id":
                        "ntlm-info",
                        "output":
                        output,
                        "ntlm-info":
                        dict(infos, protocol="http"),
                    })
                    if "DNS_Computer_Name" in infos:
                        add_hostname(
                            infos["DNS_Computer_Name"],
                            "ntlm",
                            hostrec.setdefault("hostnames", []),
                        )
        if any(val.lower().startswith("ntlm")
               for val in req.get("headers", {}).get("authorization", [])):
            return res
        # If we have headers_raw value, let's use it. Else, let's fake it as well as we can.
        http_hdrs: List[HttpHeader] = []
        output_list: List[str] = []
        has_raw_value = False
        if resp.get("headers_raw"):
            try:
                banner = utils.decode_b64(resp.get("headers_raw").encode())
            except Exception:
                utils.LOGGER.warning(
                    "Cannot decode raw headers, using parsed result")
            else:
                output_list = [
                    utils.nmap_encode_data(line)
                    for line in re.split(b"\r?\n", banner)
                ]
                banner_split = banner.split(b"\n")
                http_hdrs = [{
                    "name":
                    "_status",
                    "value":
                    utils.nmap_encode_data(banner_split[0].strip()),
                }]
                http_hdrs.extend(
                    {
                        "name": utils.nmap_encode_data(hdrname).lower(),
                        "value": utils.nmap_encode_data(hdrval),
                    } for hdrname, hdrval in (m.groups() for m in (
                        utils.RAW_HTTP_HEADER.search(part.strip())
                        for part in banner_split) if m))
                has_raw_value = True
        if not has_raw_value:  # no headers_raw or decoding failed
            # The order will be incorrect!
            banner = (utils.nmap_decode_data(resp["protocol"]["name"]) + b" " +
                      utils.nmap_decode_data(resp["status_line"]) + b"\r\n")
            line = "%s %s" % (resp["protocol"]["name"], resp["status_line"])
            http_hdrs = [{"name": "_status", "value": line}]
            output_list = [line]
            for unk in headers.pop("unknown", []):
                headers[unk["key"]] = unk["value"]
            for hdr, values in headers.items():
                hdr = hdr.replace("_", "-")
                for val in values:
                    http_hdrs.append({"name": hdr, "value": val})
                    output_list.append("%s: %s" % (hdr, val))
            if headers.get("server"):
                banner += (b"Server: " +
                           utils.nmap_decode_data(headers["server"][0]) +
                           b"\r\n\r\n")
        if http_hdrs:
            method = req.get("method")
            if method:
                output_list.append("")
                output_list.append("(Request type: %s)" % method)
            script: NmapScript = {
                "id": "http-headers",
                "output": "\n".join(output_list),
                "http-headers": http_hdrs,
            }
            if has_raw_value:
                script["masscan"] = {"raw": utils.encode_b64(banner).decode()}
            res.setdefault("scripts", []).append(script)
            handle_http_headers(hostrec, res, http_hdrs, path=url.get("path"))
    info: NmapServiceMatch = utils.match_nmap_svc_fp(banner,
                                                     proto="tcp",
                                                     probe="GetRequest")
    if info:
        add_cpe_values(hostrec, "ports.port:%s" % port, info.pop("cpe", []))
        res.update(cast(NmapPort, info))
        add_service_hostname(info, hostrec.setdefault("hostnames", []))
    if resp.get("body"):
        body = resp["body"]
        res.setdefault("scripts", []).append({
            "id":
            "http-content",
            "output":
            utils.nmap_encode_data(body.encode()),
        })
        handle_http_content(hostrec, res, body.encode())
    return res
Exemplo n.º 36
0
def zgrap_parser_http(data, hostrec, port=None):
    """This function handles data from `{"data": {"http": [...]}}`
records. `data` should be the content, i.e. the `[...]`. It should
consist of simple dictionary, that may contain a `"response"` key
and/or a `"redirect_response_chain"` key.

The output is a port dict (i.e., the content of the "ports" key of an
`nmap` of `view` record in IVRE), that may be empty.

    """
    if not data:
        return {}
    # for zgrab2 results
    if 'result' in data:
        data.update(data.pop('result'))
    if 'response' not in data:
        utils.LOGGER.warning('Missing "response" field in zgrab HTTP result')
        return {}
    resp = data['response']
    needed_fields = set(["request", "status_code", "status_line"])
    missing_fields = needed_fields.difference(resp)
    if missing_fields:
        utils.LOGGER.warning(
            'Missing field%s %s in zgrab HTTP result',
            's' if len(missing_fields) > 1 else '',
            ', '.join(repr(fld) for fld in missing_fields),
        )
        return {}
    req = resp['request']
    url = req.get('url')
    res = {
        "service_name": "http",
        "service_method": "probed",
        "state_state": "open",
        "state_reason": "response",
        "protocol": "tcp"
    }
    tls = None
    try:
        tls = req['tls_handshake']
    except KeyError:
        # zgrab2
        try:
            tls = req['tls_log']['handshake_log']
        except KeyError:
            pass
    if tls is not None:
        res['service_tunnel'] = 'ssl'
        try:
            cert = tls['server_certificates']['certificate']['raw']
        except KeyError:
            pass
        else:
            output, info = create_ssl_cert(cert.encode(), b64encoded=True)
            if info:
                res.setdefault('scripts', []).append({
                    'id': 'ssl-cert',
                    'output': output,
                    'ssl-cert': info,
                })
                for cert in info:
                    add_cert_hostnames(cert,
                                       hostrec.setdefault('hostnames', []))
    if url:
        guessed_port = None
        if ':' in url.get('host', ''):
            try:
                guessed_port = int(url['host'].split(':', 1)[1])
            except ValueError:
                pass
        if port is None:
            if guessed_port is None:
                if url.get('scheme') == 'https':
                    port = 443
                else:
                    port = 80
            else:
                port = guessed_port
        elif port != guessed_port:
            utils.LOGGER.warning(
                'Port %d found from the URL %s differs from the provided port '
                'value %d', guessed_port, url.get('path'), port)
            port = guessed_port
        # Specific paths
        if url.get('path').endswith('/.git/index'):
            if resp.get('status_code') != 200:
                return {}
            if not resp.get('body', '').startswith('DIRC'):
                return {}
            # Due to an issue with ZGrab2 output, we cannot, for now,
            # process the content of the file. See
            # <https://github.com/zmap/zgrab2/issues/263>.
            repository = '%s:%d%s' % (hostrec['addr'], port, url['path'][:-5])
            res['port'] = port
            res.setdefault('scripts', []).append({
                'id':
                'http-git',
                'output':
                '\n  %s\n    Git repository found!\n' % repository,
                'http-git': [{
                    'repository': repository,
                    'files-found': [".git/index"]
                }],
            })
            return res
        if url.get('path').endswith('/owa/auth/logon.aspx'):
            if resp.get('status_code') != 200:
                return {}
            version = set(
                m.group(1)
                for m in _EXPR_OWA_VERSION.finditer(resp.get('body', '')))
            if not version:
                return {}
            version = sorted(version,
                             key=lambda v: [int(x) for x in v.split('.')])
            res['port'] = port
            path = url['path'][:-15]
            if len(version) > 1:
                output = (
                    'OWA: path %s, version %s (multiple versions found!)' % (
                        path,
                        ' / '.join(version),
                    ))
            else:
                output = 'OWA: path %s, version %s' % (path, version[0])
            res.setdefault('scripts', []).append({
                'id':
                'http-app',
                'output':
                output,
                'http-app': [{
                    'path': path,
                    'application': 'OWA',
                    'version': version[0]
                }],
            })
            return res
        if url.get('path').endswith('/centreon/'):
            if resp.get('status_code') != 200:
                return {}
            if not resp.get('body'):
                return {}
            body = resp['body']
            res['port'] = port
            path = url['path']
            match = _EXPR_TITLE.search(body)
            if match is None:
                return {}
            if match.groups()[0] != "Centreon - IT & Network Monitoring":
                return {}
            match = _EXPR_CENTREON_VERSION.search(body)
            if match is None:
                version = None
            else:
                version = match.group(1) or match.group(2)
            res.setdefault('scripts', []).append({
                'id':
                'http-app',
                'output':
                'Centreon: path %s%s' % (
                    path,
                    '' if version is None else (', version %s' % version),
                ),
                'http-app': [
                    dict({
                        'path': path,
                        'application': 'Centreon'
                    }, **({} if version is None else {
                        'version': version
                    }))
                ],
            })
            return res
        if url.get('path') != '/':
            utils.LOGGER.warning('URL path not supported yet: %s',
                                 url.get('path'))
            return {}
    elif port is None:
        if req.get('tls_handshake') or req.get('tls_log'):
            port = 443
        else:
            port = 80
    res['port'] = port
    # Since Zgrab does not preserve the order of the headers, we need
    # to reconstruct a banner to use Nmap fingerprints
    banner = (utils.nmap_decode_data(resp['protocol']['name']) + b' ' +
              utils.nmap_decode_data(resp['status_line']) + b"\r\n")
    if resp.get('headers'):
        headers = resp['headers']
        # Check the Authenticate header first: if we requested it with
        # an Authorization header, we don't want to gather other information
        if headers.get('www_authenticate'):
            auths = headers.get('www_authenticate')
            for auth in auths:
                if ntlm._is_ntlm_message(auth):
                    try:
                        infos = ntlm.ntlm_extract_info(
                            utils.decode_b64(auth.split(None, 1)[1].encode()))
                    except (UnicodeDecodeError, TypeError, ValueError,
                            binascii.Error):
                        pass
                    keyvals = zip(ntlm_values,
                                  [infos.get(k) for k in ntlm_values])
                    output = '\n'.join("{}: {}".format(k, v)
                                       for k, v in keyvals if v)
                    res.setdefault('scripts', []).append({
                        'id': 'http-ntlm-info',
                        'output': output,
                        'ntlm-info': infos
                    })
                    if 'DNS_Computer_Name' in infos:
                        add_hostname(infos['DNS_Computer_Name'], 'ntlm',
                                     hostrec.setdefault('hostnames', []))
        if any(val.lower().startswith('ntlm')
               for val in req.get('headers', {}).get('authorization', [])):
            return res
        # the order will be incorrect!
        line = '%s %s' % (resp['protocol']['name'], resp['status_line'])
        http_hdrs = [{'name': '_status', 'value': line}]
        output = [line]
        for unk in headers.pop('unknown', []):
            headers[unk['key']] = unk['value']
        for hdr, values in headers.items():
            hdr = hdr.replace('_', '-')
            for val in values:
                http_hdrs.append({'name': hdr, 'value': val})
                output.append('%s: %s' % (hdr, val))
        if http_hdrs:
            method = req.get('method')
            if method:
                output.append('')
                output.append('(Request type: %s)' % method)
            res.setdefault('scripts', []).append({
                'id': 'http-headers',
                'output': '\n'.join(output),
                'http-headers': http_hdrs,
            })
            handle_http_headers(hostrec, res, http_hdrs, path=url.get('path'))
        if headers.get('server'):
            banner += (b"Server: " +
                       utils.nmap_decode_data(headers['server'][0]) +
                       b"\r\n\r\n")
    info = utils.match_nmap_svc_fp(banner, proto="tcp", probe="GetRequest")
    if info:
        add_cpe_values(hostrec, 'ports.port:%s' % port, info.pop('cpe', []))
        res.update(info)
    if resp.get('body'):
        body = resp['body']
        res.setdefault('scripts', []).append({
            'id':
            'http-content',
            'output':
            utils.nmap_encode_data(body.encode()),
        })
        match = _EXPR_TITLE.search(body)
        if match is not None:
            title = match.groups()[0]
            res['scripts'].append({
                'id': 'http-title',
                'output': title,
                'http-title': {
                    'title': title
                },
            })
        script_http_ls = create_http_ls(body, url=url)
        if script_http_ls is not None:
            res.setdefault('scripts', []).append(script_http_ls)
        service_elasticsearch = create_elasticsearch_service(body)
        if service_elasticsearch:
            if 'hostname' in service_elasticsearch:
                add_hostname(service_elasticsearch.pop('hostname'), 'service',
                             hostrec.setdefault('hostnames', []))
            add_cpe_values(hostrec, 'ports.port:%s' % port,
                           service_elasticsearch.pop('cpe', []))
            res.update(service_elasticsearch)
    return res