# This file is part of creddump.
#
# creddump is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# creddump 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with creddump. If not, see .
"""
@author: Brendan Dolan-Gavitt
@license: GNU General Public License 2.0 or later
@contact: bdolangavitt@wesleyan.edu
"""
from framework.win32.rawreg import *
from framework.addrspace import HiveFileAddressSpace
from framework.win32.hashdump import get_bootkey
from framework.win32.lsasecrets import get_secret_by_name,get_lsa_key
from Crypto.Hash import HMAC
from Crypto.Cipher import ARC4, AES
from struct import unpack
def get_nlkm(secaddr, lsakey, vista):
return get_secret_by_name(secaddr, 'NL$KM', lsakey, vista)
def decrypt_hash(edata, nlkm, ch):
hmac_md5 = HMAC.new(nlkm,ch)
rc4key = hmac_md5.digest()
rc4 = ARC4.new(rc4key)
data = rc4.encrypt(edata)
return data
def decrypt_hash_vista(edata, nlkm, ch):
"""
Based on code from http://lab.mediaservice.net/code/cachedump.rb
"""
aes = AES.new(nlkm[16:32], AES.MODE_CBC, ch)
out = bytearray()
for i in range(0, len(edata), 16):
buf = edata[i : i+16]
if len(buf) < 16:
buf += (16 - len(buf)) * b"\00"
out += aes.decrypt(buf)
return out
def parse_cache_entry(cache_data):
(uname_len, domain_len) = unpack("