80 lines
2.7 KiB
Python
80 lines
2.7 KiB
Python
# This library is free software: you can redistribute it and/or
|
|
# modify it under the terms of the GNU Lesser General Public
|
|
# License as published by the Free Software Foundation, either
|
|
# version 3 of the License, or (at your option) any later version.
|
|
|
|
# This library is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# Lesser General Public License for more details.
|
|
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with this library. If not, see <http://www.gnu.org/licenses/> or <http://www.gnu.org/licenses/lgpl.txt>.
|
|
|
|
import binascii
|
|
import hashlib
|
|
import hmac
|
|
import re
|
|
from ntlm_auth import des
|
|
|
|
|
|
def _lmowfv1(password):
|
|
"""
|
|
[MS-NLMP] v28.0 2016-07-14
|
|
|
|
3.3.1 NTLM v1 Authentication
|
|
Same function as LMOWFv1 in document to create a one way hash of the password. Only
|
|
used in NTLMv1 auth without session security
|
|
|
|
:param password: The password of the user we are trying to authenticate with
|
|
:return res: A Lan Manager hash of the password supplied
|
|
"""
|
|
|
|
# fix the password length to 14 bytes
|
|
password = password.upper()
|
|
lm_pw = password[0:14]
|
|
|
|
# do hash
|
|
magic_str = b"KGS!@#$%" # page 56 in [MS-NLMP v28.0]
|
|
|
|
res = b''
|
|
dobj = des.DES(lm_pw[0:7])
|
|
res = res + dobj.encrypt(magic_str)
|
|
|
|
dobj = des.DES(lm_pw[7:14])
|
|
res = res + dobj.encrypt(magic_str)
|
|
|
|
return res
|
|
|
|
def _ntowfv1(password):
|
|
"""
|
|
[MS-NLMP] v28.0 2016-07-14
|
|
|
|
3.3.1 NTLM v1 Authentication
|
|
Same function as NTOWFv1 in document to create a one way hash of the password. Only
|
|
used in NTLMv1 auth without session security
|
|
|
|
:param password: The password of the user we are trying to authenticate with
|
|
:return digest: An NT hash of the password supplied
|
|
"""
|
|
|
|
digest = hashlib.new('md4', password.encode('utf-16le')).digest()
|
|
return digest
|
|
|
|
def _ntowfv2(user_name, password, domain_name):
|
|
"""
|
|
[MS-NLMP] v28.0 2016-07-14
|
|
|
|
3.3.2 NTLM v2 Authentication
|
|
Same function as NTOWFv2 (and LMOWFv2) in document to create a one way hash of the password.
|
|
This combines some extra security features over the v1 calculations used in NTLMv2 auth.
|
|
|
|
:param user_name: The user name of the user we are trying to authenticate with
|
|
:param password: The password of the user we are trying to authenticate with
|
|
:param domain_name: The domain name of the user account we are authenticated with
|
|
:return digest: An NT hash of the parameters supplied
|
|
"""
|
|
digest = _ntowfv1(password)
|
|
digest = hmac.new(digest, (user_name.upper() + domain_name).encode('utf-16le')).digest()
|
|
|
|
return digest |