class NTLMContext(AuthContext):
_AUTH_PROVIDERS = {
'ntlm': ''
}
def __init__(self, username, password, cbt_app_data):
if username is None:
raise ValueError("Cannot use ntlm-auth with no username set")
if password is None:
raise ValueError("Cannot use ntlm-auth with no password set")
super(NTLMContext, self).__init__(password, "ntlm", cbt_app_data)
self._domain, self._username = self._get_domain_username(username)
@property
def domain(self):
return self._domain
@property
def username(self):
return self._username
@property
def complete(self):
return self._context.complete
def init_context(self):
cbt_struct = None
if self.cbt_app_data:
cbt_struct = GssChannelBindingsStruct()
cbt_struct[cbt_struct.APPLICATION_DATA] = self.cbt_app_data
self._context = NtlmContext(self.username, self.password, self.domain,
cbt_data=cbt_struct)
def step(self):
msg1 = self._context.step()
log.debug("NTLM Negotiate message: %s" % binascii.hexlify(msg1))
msg2 = yield msg1
log.debug("NTLM: Parsing Challenge message and generating "
"Authenticate message: %s" % binascii.hexlify(msg2))
msg3 = self._context.step(msg2)
yield msg3
def wrap(self, data):
wrapped_data = self._context.wrap(data)
return wrapped_data[:16], wrapped_data[16:]
def unwrap(self, header, data):
return self._context.unwrap(header + data)
def retry_with_ntlm_auth(self, auth_header_field, auth_header, response,
auth_type, args):
try:
cert_hash = self._get_server_cert(response)
cbt_data = GssChannelBindingsStruct()
cbt_data[cbt_data.APPLICATION_DATA] = b"tls-server-end-point:" + \
base64.b16decode(cert_hash)
except Exception:
cbt_data = None
context = NtlmContext(self.username,
self.password,
self.domain,
cbt_data=cbt_data,
ntlm_compatibility=self.ntlm_compatibility)
# Consume the original response contents and release the connection for
# later
response.content
response.raw.release_conn()
# Create the negotiate request
msg1_req = response.request.copy()
msg1 = context.step()
msg1_header = "%s %s" % (auth_type, base64.b64encode(msg1).decode())
msg1_req.headers[auth_header] = msg1_header
# Send the negotiate request and receive the challenge message
disable_stream_args = dict(args, stream=False)
msg2_resp = response.connection.send(msg1_req, **disable_stream_args)
msg2_resp.content
msg2_resp.raw.release_conn()
# Parse the challenge response in the ntlm_context
msg2_header = msg2_resp.headers[auth_header_field]
msg2 = msg2_header.replace(auth_type + ' ', '')
msg3 = context.step(base64.b64decode(msg2))
# Create the authenticate request
msg3_req = msg2_resp.request.copy()
msg3_header = auth_type + ' ' + base64.b64encode(msg3).decode()
msg3_req.headers[auth_header] = msg3_header
# Send the authenticate request
final_response = msg2_resp.connection.send(msg3_req, **args)
final_response.history.append(response)
final_response.history.append(msg2_resp)
return final_response
class NtlmContext(object):
def __init__(self, username, password):
if username is None:
raise SMBAuthenticationError("The username must be set when using "
"NTLM authentication")
if password is None:
raise SMBAuthenticationError("The password must be set when using "
"NTLM authentication")
log.info("Setting up NTLM Security Context for user %s" % username)
self.domain, self.username = _split_username_and_domain(username)
self.context = Ntlm(self.username, password, domain=self.domain)
@property
def complete(self):
return self.context.complete
def step(self):
log.info("NTLM: Generating Negotiate message")
msg1 = self.context.step()
log.debug("NTLM: Negotiate message: %s" % _bytes_to_hex(msg1))
msg2 = yield msg1
log.info(
"NTLM: Parsing Challenge message and generating Authentication message"
)
log.debug("NTLM: Challenge message: %s" % _bytes_to_hex(msg2))
msg3 = self.context.step(input_token=msg2)
yield msg3
def get_session_key(self):
# The session_key was only recently added in ntlm-auth, we have the
# fallback to the non-public interface for older versions where we
# know this still works. This should be removed once ntlm-auth no
# longer requires these older versions (>=1.4.0).
return getattr(self.context, 'session_key',
self.context._session_security.exported_session_key)
class Authentication(object):
__slots__ = ('logger', '_ctx', '_method', '_sspi', '_channel_bindings',
'_args', '_user', '_domain', '_password', '_kerberos')
def __init__(self, logger):
self.logger = logger
self._ctx = None
self._method = None
self._sspi = False
self._channel_bindings = None
self._kerberos = KerberosBackend()
def _create_auth1_message_sspi(self,
url,
method_data,
user=None,
password=None,
domain=None,
flags=0,
certificate=None):
if isinstance(method_data, Method):
method = method_data.id
else:
method = method_data
server = None
principal = None
kwargs = {
'user': user,
'password': password,
'domain': domain,
'gssflags': flags
}
parsed = urlparse(url)
host = parsed.netloc
scheme = parsed.scheme.upper()
hostname = host.rsplit(':', 1)[0]
if scheme.startswith('HTTP'):
service = 'HTTP'
else:
service = scheme
need_inquire_cred = False
if (self._kerberos.has_sspi_nego_support
or self._kerberos.has_gssapi_support) and method in (
METHOD_NEGOTIATE, METHOD_KERBEROS):
if certificate:
self.set_certificate(certificate)
if method == METHOD_NEGOTIATE:
mech_oid = self._kerberos.GSS_MECH_OID_SPNEGO
else:
mech_oid = self._kerberos.GSS_MECH_OID_KRB5
flags |= \
self._kerberos.GSS_C_MUTUAL_FLAG | \
self._kerberos.GSS_C_SEQUENCE_FLAG
kwargs.update({'mech_oid': mech_oid, 'gssflags': flags})
server = service + '@' + hostname
if self._kerberos.has_gssapi_support:
del kwargs['user']
del kwargs['domain']
if user and domain and '@' not in user:
principal = user + '@' + domain
else:
principal = user
if not kwargs['password']:
need_inquire_cred = True
del kwargs['password']
elif self._kerberos.has_sspi_ntlm_support and method == METHOD_NTLM:
# This is only for SSPI
kwargs['mech_oid'] = self._kerberos.GSS_MECH_OID_NTLM
server = hostname
else:
raise NotImplementedError('No supported auth methods')
result = 0
try:
result, self._ctx = self._kerberos.authGSSClientInit(
server, principal, **kwargs)
except TypeError as e:
self.logger.error(
'GSSAPI: authGSSClientInit: failed to set password: %s', e)
if password:
raise NotImplementedError(
"ccs-pykerberos doesn't support password auth")
del kwargs['password']
result, self._ctx = self._kerberos.authGSSClientInit(
server, principal, **kwargs)
if result < 0:
self.logger.error('GSSAPI: authGSSClientInit Result: %d', result)
raise AuthenticationError(result)
self.logger.debug(
'GSSAPI: New context for SPN=%s%s (need inquire creds: %s)',
server, '' if not principal else 'Principal=' + principal,
need_inquire_cred)
if need_inquire_cred:
result = self._kerberos.authGSSClientInquireCred(self._ctx)
if result < 0:
raise AuthenticationError(result)
self.logger.warning(
'GSSAPI: Using principal: %s',
self._kerberos.authGSSClientUserName(self._ctx),
)
kwargs = {}
if self._channel_bindings:
kwargs['channel_bindings'] = self._channel_bindings
result = self._kerberos.authGSSClientStep(self._ctx, '', **kwargs)
if result < 0:
self.logger.error('GSSAPI: authGSSClientInit Result: %d', result)
raise AuthenticationError(result)
self._method = method
self._sspi = True
return Result(result == self._kerberos.CONTINUE, self._method,
self._kerberos.authGSSClientResponse(self._ctx))
def _create_auth2_message_sspi(self, payload):
kwargs = {}
if self._channel_bindings:
kwargs['channel_bindings'] = self._channel_bindings
result = self._kerberos.authGSSClientStep(self._ctx, payload, **kwargs)
payload = self._kerberos.authGSSClientResponse(self._ctx)
if result < 0:
self.logger.error('GSSAPI: authGSSClientStep (2) Step Result: %d',
result)
raise AuthenticationError(result)
elif result == self._kerberos.COMPLETE:
if payload is not None:
if self._method != METHOD_NTLM:
# Known bug for NTLM and winkerberos
self.logger.warning(
'GSSAPI: API bug: payload provided but step is not required'
)
result = self._kerberos.CONTINUE
else:
self.logger.info(
'GSSAPI: authGSSClientStep (2) not required for %s',
self._method)
return Result(result == self._kerberos.CONTINUE, self._method, payload)
def set_certificate(self, certificate):
# FIXME: Handle case with different hash function somehow..
application_data = b'tls-server-end-point:' + hashlib.sha256(
certificate).digest()
self._channel_bindings = self._kerberos.channelBindings(
application_data=application_data)
self.logger.debug('Set channel bindings: %s -> %s',
repr(application_data), self._channel_bindings)
def _create_auth1_message_ntlm(self, domain, user, pw, certificate):
domain = domain or None
workstation = None
cbt_data = None
ntlm_compatibility = 1
if certificate is not None:
ntlm_compatibility = 3
cbt_data = GssChannelBindingsStruct()
cbt_data[cbt_data.APPLICATION_DATA] = \
b'tls-server-end-point:' + hashlib.sha256(
certificate).digest()
self._ctx = NtlmContext(user, pw, domain, workstation, cbt_data,
ntlm_compatibility)
payload = b64encode(self._ctx.step()).decode('ascii')
self._method = METHOD_NTLM
return Result(True, self._method, payload)
def _create_auth2_message_ntlm(self, payload):
payload = b64encode(self._ctx.step(b64decode(payload))).decode('ascii')
return Result(False, self._method, payload)
def _create_auth1_message_basic(self, user, pw):
response = b64encode((user + ':' + pw).encode('utf-8')).decode('ascii')
self._method = METHOD_BASIC
return Result(False, self._method, response)
def _create_auth1_message_digest(self, domain, user, pw, args):
response = make_digest_response(domain, user, pw, args)
self._method = METHOD_DIGEST
return Result(False, self._method, response)
def create_auth1_message(self,
domain,
user,
pw,
url,
payloads,
certificate=None,
secure=True):
if __debug__:
assert (not domain or isinstance(domain, string_types))
assert (not user or isinstance(user, string_types))
assert (not pw or isinstance(pw, string_types))
assert (not url or isinstance(url, string_types))
assert (not certificate or isinstance(certificate, bytes))
supported_auth_methods, _ = get_supported_methods(payloads, secure)
for method in supported_auth_methods:
if method.id in METHODS_KERBEROS:
try:
return self._create_auth1_message_sspi(
url, method, user, pw, domain, certificate=certificate)
except self._kerberos.GSSError as e:
self.logger.info('GSS error: method=%s error=%s (ignore)',
method, e)
except NotImplementedError:
self.logger.debug('Not supported conditions for method %s',
method)
except AuthenticationError as e:
self.logger.info('SSPI error: method=%s error=%s (ignore)',
method, e)
self._ctx = None
elif user is None:
continue
elif method.id == METHOD_NTLM:
self.logger.info(
'Fallback to py NTLM with creds: %s -> user=%s', url, user)
return self._create_auth1_message_ntlm(domain, user, pw,
certificate)
elif method.id == METHOD_DIGEST:
self.logger.info(
'Fallback to py Digest with creds: %s -> user=%s', url,
user)
return self._create_auth1_message_digest(
domain, user, pw, method.args)
elif method.id == METHOD_BASIC:
self.logger.info(
'Fallback to py Basic with creds: %s -> user=%s', url,
user)
return self._create_auth1_message_basic(user, pw)
if user is None:
self.logger.info('No credentials found for URL=%s', url)
raise AuthenticationError('No acceptable auth found for: URL: %s', url)
def create_auth2_message(self, payload):
if self._sspi:
return self._create_auth2_message_sspi(payload)
elif self._method == METHOD_NTLM:
return self._create_auth2_message_ntlm(payload)
else:
raise AuthenticationError(
'Invalid state (expected method {})'.format(self._method))
def test_ntlm_context_with_mic(self, monkeypatch):
monkeypatch.setattr('os.urandom', lambda s: b"\xaa" * 8)
monkeypatch.setattr('ntlm_auth.messages.get_version',
lambda s: b"\x05\x01\x28\x0A\x00\x00\x00\x0F")
monkeypatch.setattr('ntlm_auth.messages.get_random_export_session_key',
lambda: b"\x55" * 16)
monkeypatch.setattr('ntlm_auth.compute_response.get_windows_timestamp',
lambda: b"\x00" * 8)
ch = 'E3CA49271E5089CC48CE82109F1324F41DBEDDC29A777410C738F7868C4FF405'
cbt_data = GssChannelBindingsStruct()
cbt_data[cbt_data.APPLICATION_DATA] = b"tls-server-end-point:" + \
base64.b16decode(ch)
ntlm_context = NtlmContext("User",
"Password",
"Domain",
"COMPUTER",
cbt_data=cbt_data)
ntlm_context.reset_rc4_state(
) # Verifies it won't fail when the session security isn't set up.
actual_nego = ntlm_context.step()
expected_nego = b"\x4e\x54\x4c\x4d\x53\x53\x50\x00" \
b"\x01\x00\x00\x00\x31\xb0\x88\xe2" \
b"\x06\x00\x06\x00\x28\x00\x00\x00" \
b"\x08\x00\x08\x00\x2e\x00\x00\x00" \
b"\x05\x01\x28\x0a\x00\x00\x00\x0f" \
b"\x44\x6f\x6d\x61\x69\x6e\x43\x4f" \
b"\x4d\x50\x55\x54\x45\x52"
assert actual_nego == expected_nego
assert not ntlm_context.mic_present
assert not ntlm_context.complete
challenge_msg = b"\x4E\x54\x4C\x4D\x53\x53\x50\x00" \
b"\x02\x00\x00\x00\x00\x00\x00\x00" \
b"\x38\x00\x00\x00\x33\x82\x8A\xE2" \
b"\x01\x23\x45\x67\x89\xAB\xCD\xEF" \
b"\x00\x00\x00\x00\x00\x00\x00\x00" \
b"\x30\x00\x30\x00\x38\x00\x00\x00" \
b"\x06\x01\xB1\x1D\x00\x00\x00\x0F" \
b"\x02\x00\x0C\x00\x44\x00\x6F\x00" \
b"\x6D\x00\x61\x00\x69\x00\x6E\x00" \
b"\x01\x00\x0C\x00\x53\x00\x65\x00" \
b"\x72\x00\x76\x00\x65\x00\x72\x00" \
b"\x07\x00\x08\x00\x00\x00\x00\x00" \
b"\x00\x00\x00\x00\x00\x00\x00\x00"
actual_auth = ntlm_context.step(challenge_msg)
expected_auth = b'\x4E\x54\x4C\x4D\x53\x53\x50\x00' \
b'\x03\x00\x00\x00\x18\x00\x18\x00' \
b'\x7C\x00\x00\x00\x7C\x00\x7C\x00' \
b'\x94\x00\x00\x00\x0C\x00\x0C\x00' \
b'\x58\x00\x00\x00\x08\x00\x08\x00' \
b'\x64\x00\x00\x00\x10\x00\x10\x00' \
b'\x6C\x00\x00\x00\x10\x00\x10\x00' \
b'\x10\x01\x00\x00\x31\x82\x8A\xE2' \
b'\x05\x01\x28\x0A\x00\x00\x00\x0F' \
b'\xC4\x45\x2C\xF7\xA8\x1E\x4D\x11' \
b'\xD0\x78\x18\x94\x09\x57\x5D\x9E' \
b'\x44\x00\x6F\x00\x6D\x00\x61\x00' \
b'\x69\x00\x6E\x00\x55\x00\x73\x00' \
b'\x65\x00\x72\x00\x43\x00\x4F\x00' \
b'\x4D\x00\x50\x00\x55\x00\x54\x00' \
b'\x45\x00\x52\x00\x00\x00\x00\x00' \
b'\x00\x00\x00\x00\x00\x00\x00\x00' \
b'\x00\x00\x00\x00\x00\x00\x00\x00' \
b'\x00\x00\x00\x00\xA1\x3D\x03\x8A' \
b'\xD0\xCA\x02\x64\x33\x89\x7C\x33' \
b'\x5E\x0F\x56\xDF\x01\x01\x00\x00' \
b'\x00\x00\x00\x00\x00\x00\x00\x00' \
b'\x00\x00\x00\x00\xAA\xAA\xAA\xAA' \
b'\xAA\xAA\xAA\xAA\x00\x00\x00\x00' \
b'\x02\x00\x0C\x00\x44\x00\x6F\x00' \
b'\x6D\x00\x61\x00\x69\x00\x6E\x00' \
b'\x01\x00\x0C\x00\x53\x00\x65\x00' \
b'\x72\x00\x76\x00\x65\x00\x72\x00' \
b'\x07\x00\x08\x00\x00\x00\x00\x00' \
b'\x00\x00\x00\x00\x06\x00\x04\x00' \
b'\x02\x00\x00\x00\x0A\x00\x10\x00' \
b'\x6E\xA1\x9D\xF0\x66\xDA\x46\x22' \
b'\x05\x1F\x9C\x4F\x92\xC6\xDF\x74' \
b'\x00\x00\x00\x00\x00\x00\x00\x00' \
b'\x1D\x08\x89\xD1\xA5\xEE\xED\x21' \
b'\x91\x9E\x1A\xB8\x27\xC3\x0B\x17'
assert actual_auth == expected_auth
assert ntlm_context.complete
assert ntlm_context.mic_present
request_msg = b"test req"
response_msg = b"test res"
actual_wrapped = ntlm_context.wrap(request_msg)
expected_wrapped = b"\x01\x00\x00\x00\xbc\xe3\x23\xa1" \
b"\x72\x06\x23\x78\x00\x00\x00\x00" \
b"\x70\x80\x1e\x11\xfe\x6b\x3a\xad"
assert actual_wrapped == expected_wrapped
server_sec = SessionSecurity(
ntlm_context._session_security.negotiate_flags,
ntlm_context._session_security.exported_session_key, "server")
server_unwrap = server_sec.unwrap(actual_wrapped[16:],
actual_wrapped[0:16])
assert server_unwrap == request_msg
response_wrapped = server_sec.wrap(response_msg)
actual_unwrap = ntlm_context.unwrap(response_wrapped[1] +
response_wrapped[0])
assert actual_unwrap == response_msg
msg = b"Hello"
actual_sig1 = ntlm_context.sign(msg)
expected_sig1 = b"\x01\x00\x00\x00\x08\xF0\x0D\x86\x34\x05\x1A\x1D\x01\x00\x00\x00"
assert actual_sig1 == expected_sig1
server_sec.verify_signature(msg, actual_sig1)
actual_sig2 = ntlm_context.sign(msg)
expected_sig2 = b"\x01\x00\x00\x00\x07\x64\x0C\x30\x1C\xD7\x76\xF0\x02\x00\x00\x00"
assert actual_sig2 == expected_sig2
server_sec.verify_signature(msg, actual_sig2)
ntlm_context.reset_rc4_state()
actual_sig3 = ntlm_context.sign(msg)
expected_sig3 = b"\x01\x00\x00\x00\x1E\xD4\xA3\xE5\xE8\x05\x74\x01\x03\x00\x00\x00"
assert actual_sig3 == expected_sig3
server_sec.reset_rc4_state(outgoing=False)
server_sec.verify_signature(msg, actual_sig3)
server_sig = server_sec.get_signature(msg)
ntlm_context.verify(msg, server_sig)
def test_ntlm_context(self, monkeypatch):
monkeypatch.setattr('os.urandom', lambda s: b"\xaa" * 8)
monkeypatch.setattr('ntlm_auth.messages.get_version',
lambda s: b"\x05\x01\x28\x0A\x00\x00\x00\x0F")
monkeypatch.setattr('ntlm_auth.messages.get_random_export_session_key',
lambda: b"\x55" * 16)
monkeypatch.setattr('ntlm_auth.compute_response.get_windows_timestamp',
lambda: b"\x00" * 8)
ch = 'E3CA49271E5089CC48CE82109F1324F41DBEDDC29A777410C738F7868C4FF405'
cbt_data = GssChannelBindingsStruct()
cbt_data[cbt_data.APPLICATION_DATA] = b"tls-server-end-point:" + \
base64.b16decode(ch)
ntlm_context = NtlmContext("User",
"Password",
"Domain",
"COMPUTER",
cbt_data=cbt_data)
actual_nego = ntlm_context.step()
expected_nego = b"\x4e\x54\x4c\x4d\x53\x53\x50\x00" \
b"\x01\x00\x00\x00\x31\xb0\x88\xe2" \
b"\x06\x00\x06\x00\x28\x00\x00\x00" \
b"\x08\x00\x08\x00\x2e\x00\x00\x00" \
b"\x05\x01\x28\x0a\x00\x00\x00\x0f" \
b"\x44\x6f\x6d\x61\x69\x6e\x43\x4f" \
b"\x4d\x50\x55\x54\x45\x52"
assert actual_nego == expected_nego
assert not ntlm_context.mic_present
assert not ntlm_context.complete
challenge_msg = b"\x4e\x54\x4c\x4d\x53\x53\x50\x00" \
b"\x02\x00\x00\x00\x2f\x82\x88\xe2" \
b"\x38\x00\x00\x00\x33\x82\x8a\xe2" \
b"\x01\x23\x45\x67\x89\xab\xcd\xef" \
b"\x00\x00\x00\x00\x00\x00\x00\x00" \
b"\x24\x00\x24\x00\x44\x00\x00\x00" \
b"\x06\x00\x70\x17\x00\x00\x00\x0f" \
b"\x53\x00\x65\x00\x72\x00\x76\x00" \
b"\x65\x00\x72\x00\x02\x00\x0c\x00" \
b"\x44\x00\x6f\x00\x6d\x00\x61\x00" \
b"\x69\x00\x6e\x00\x01\x00\x0c\x00" \
b"\x53\x00\x65\x00\x72\x00\x76\x00" \
b"\x65\x00\x72\x00\x00\x00\x00\x00"
actual_auth = ntlm_context.step(challenge_msg)
expected_auth = b'\x4e\x54\x4c\x4d\x53\x53\x50\x00' \
b'\x03\x00\x00\x00\x18\x00\x18\x00' \
b'\x6c\x00\x00\x00\x68\x00\x68\x00' \
b'\x84\x00\x00\x00\x0c\x00\x0c\x00' \
b'\x48\x00\x00\x00\x08\x00\x08\x00' \
b'\x54\x00\x00\x00\x10\x00\x10\x00' \
b'\x5c\x00\x00\x00\x10\x00\x10\x00' \
b'\xec\x00\x00\x00\x31\x82\x8a\xe2' \
b'\x05\x01\x28\x0a\x00\x00\x00\x0f' \
b'\x44\x00\x6f\x00\x6d\x00\x61\x00' \
b'\x69\x00\x6e\x00\x55\x00\x73\x00' \
b'\x65\x00\x72\x00\x43\x00\x4f\x00' \
b'\x4d\x00\x50\x00\x55\x00\x54\x00' \
b'\x45\x00\x52\x00\x86\xc3\x50\x97' \
b'\xac\x9c\xec\x10\x25\x54\x76\x4a' \
b'\x57\xcc\xcc\x19\xaa\xaa\xaa\xaa' \
b'\xaa\xaa\xaa\xaa\x04\x10\xc4\x7a' \
b'\xcf\x19\x97\x89\xde\x7f\x20\x11' \
b'\x95\x7a\xea\x50\x01\x01\x00\x00' \
b'\x00\x00\x00\x00\x00\x00\x00\x00' \
b'\x00\x00\x00\x00\xaa\xaa\xaa\xaa' \
b'\xaa\xaa\xaa\xaa\x00\x00\x00\x00' \
b'\x02\x00\x0c\x00\x44\x00\x6f\x00' \
b'\x6d\x00\x61\x00\x69\x00\x6e\x00' \
b'\x01\x00\x0c\x00\x53\x00\x65\x00' \
b'\x72\x00\x76\x00\x65\x00\x72\x00' \
b'\x0a\x00\x10\x00\x6e\xa1\x9d\xf0' \
b'\x66\xda\x46\x22\x05\x1f\x9c\x4f' \
b'\x92\xc6\xdf\x74\x00\x00\x00\x00' \
b'\x00\x00\x00\x00\xe5\x69\x95\x1d' \
b'\x15\xd4\x73\x5f\x49\xe1\x4c\xf9' \
b'\xa7\xd3\xe6\x72'
assert actual_auth == expected_auth
assert ntlm_context.complete
assert not ntlm_context.mic_present
request_msg = b"test req"
response_msg = b"test res"
actual_wrapped = ntlm_context.wrap(request_msg)
expected_wrapped = b"\x01\x00\x00\x00\xbc\xe3\x23\xa1" \
b"\x72\x06\x23\x78\x00\x00\x00\x00" \
b"\x70\x80\x1e\x11\xfe\x6b\x3a\xad"
assert actual_wrapped == expected_wrapped
server_sec = SessionSecurity(
ntlm_context._session_security.negotiate_flags,
ntlm_context._session_security.exported_session_key, "server")
server_unwrap = server_sec.unwrap(actual_wrapped[16:],
actual_wrapped[0:16])
assert server_unwrap == request_msg
response_wrapped = server_sec.wrap(response_msg)
actual_unwrap = ntlm_context.unwrap(response_wrapped[1] +
response_wrapped[0])
assert actual_unwrap == response_msg