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Diffstat (limited to 'foreign/client_handling/lazagne/softwares/windows/creddump7/win32/hashdump.py')
| -rw-r--r-- | foreign/client_handling/lazagne/softwares/windows/creddump7/win32/hashdump.py | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/foreign/client_handling/lazagne/softwares/windows/creddump7/win32/hashdump.py b/foreign/client_handling/lazagne/softwares/windows/creddump7/win32/hashdump.py new file mode 100644 index 0000000..02a8e58 --- /dev/null +++ b/foreign/client_handling/lazagne/softwares/windows/creddump7/win32/hashdump.py @@ -0,0 +1,298 @@ +# 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 <http://www.gnu.org/licenses/>. + +""" +@author: Brendan Dolan-Gavitt +@license: GNU General Public License 2.0 or later +@contact: bdolangavitt@wesleyan.edu +""" + +import hashlib +import codecs +from struct import pack + +from ..addrspace import HiveFileAddressSpace +from .rawreg import * +from foreign.client_handling.lazagne.config.crypto.rc4 import RC4 +from foreign.client_handling.lazagne.config.crypto.pyDes import des, ECB +from foreign.client_handling.lazagne.config.crypto.pyaes.aes import AESModeOfOperationCBC +from foreign.client_handling.lazagne.config.winstructure import char_to_int, chr_or_byte, int_or_bytes + + +odd_parity = [ + 1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14, 14, + 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31, + 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47, + 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62, + 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79, + 81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94, + 97, 97, 98, 98, 100, 100, 103, 103, 104, 104, 107, 107, 109, 109, 110, 110, + 112, 112, 115, 115, 117, 117, 118, 118, 121, 121, 122, 122, 124, 124, 127, 127, + 128, 128, 131, 131, 133, 133, 134, 134, 137, 137, 138, 138, 140, 140, 143, 143, + 145, 145, 146, 146, 148, 148, 151, 151, 152, 152, 155, 155, 157, 157, 158, 158, + 161, 161, 162, 162, 164, 164, 167, 167, 168, 168, 171, 171, 173, 173, 174, 174, + 176, 176, 179, 179, 181, 181, 182, 182, 185, 185, 186, 186, 188, 188, 191, 191, + 193, 193, 194, 194, 196, 196, 199, 199, 200, 200, 203, 203, 205, 205, 206, 206, + 208, 208, 211, 211, 213, 213, 214, 214, 217, 217, 218, 218, 220, 220, 223, 223, + 224, 224, 227, 227, 229, 229, 230, 230, 233, 233, 234, 234, 236, 236, 239, 239, + 241, 241, 242, 242, 244, 244, 247, 247, 248, 248, 251, 251, 253, 253, 254, 254 +] + +# Permutation matrix for boot key +p = [0x8, 0x5, 0x4, 0x2, 0xb, 0x9, 0xd, 0x3, + 0x0, 0x6, 0x1, 0xc, 0xe, 0xa, 0xf, 0x7] + +# Constants for SAM decrypt algorithm +aqwerty = b"!@#$%^&*()qwertyUIOPAzxcvbnmQQQQQQQQQQQQ)(*@&%\0" +anum = b"0123456789012345678901234567890123456789\0" +antpassword = b"NTPASSWORD\0" +almpassword = b"LMPASSWORD\0" + +empty_lm = codecs.decode('aad3b435b51404eeaad3b435b51404ee', 'hex') +empty_nt = codecs.decode('31d6cfe0d16ae931b73c59d7e0c089c0', 'hex') + +AES_BLOCK_SIZE = 16 + + +def str_to_key(s): + key = [] + key.append(char_to_int(s[0]) >> 1) + key.append(((char_to_int(s[0]) & 0x01) << 6) | (char_to_int(s[1]) >> 2)) + key.append(((char_to_int(s[1]) & 0x03) << 5) | (char_to_int(s[2]) >> 3)) + key.append(((char_to_int(s[2]) & 0x07) << 4) | (char_to_int(s[3]) >> 4)) + key.append(((char_to_int(s[3]) & 0x0F) << 3) | (char_to_int(s[4]) >> 5)) + key.append(((char_to_int(s[4]) & 0x1F) << 2) | (char_to_int(s[5]) >> 6)) + key.append(((char_to_int(s[5]) & 0x3F) << 1) | (char_to_int(s[6]) >> 7)) + key.append(char_to_int(s[6]) & 0x7F) + + for i in range(8): + key[i] = (key[i] << 1) + key[i] = odd_parity[key[i]] + + return b"".join(chr_or_byte(k) for k in key) + + +def sid_to_key(sid): + s1 = b"" + s1 += chr_or_byte(sid & 0xFF) + s1 += chr_or_byte((sid >> 8) & 0xFF) + s1 += chr_or_byte((sid >> 16) & 0xFF) + s1 += chr_or_byte((sid >> 24) & 0xFF) + s1 += int_or_bytes(s1[0]) + s1 += int_or_bytes(s1[1]) + s1 += int_or_bytes(s1[2]) + s2 = int_or_bytes(s1[3]) + int_or_bytes(s1[0]) + int_or_bytes(s1[1]) + int_or_bytes(s1[2]) + s2 += int_or_bytes(s2[0]) + int_or_bytes(s2[1]) + int_or_bytes(s2[2]) + return str_to_key(s1), str_to_key(s2) + + +def find_control_set(sysaddr): + root = get_root(sysaddr) + if not root: + return 1 + + csselect = open_key(root, [b"Select"]) + if not csselect: + return 1 + + for v in values(csselect): + if v.Name == b"Current": + return v.Data.value + + +def get_bootkey(sysaddr): + cs = find_control_set(sysaddr) + lsa_base = [b"ControlSet%03d" % cs, b"Control", b"Lsa"] + lsa_keys = [b"JD", b"Skew1", b"GBG", b"Data"] + + root = get_root(sysaddr) + if not root: + return None + + lsa = open_key(root, lsa_base) + if not lsa: + return None + + bootkey = b"" + + for lk in lsa_keys: + key = open_key(lsa, [lk]) + class_data = sysaddr.read(key.Class.value, key.ClassLength.value) + bootkey += codecs.decode(class_data.decode('utf-16-le'), 'hex') + + bootkey_scrambled = b"" + for i in range(len(bootkey)): + try: + bootkey_scrambled += bootkey[p[i]] + except TypeError: + bootkey_scrambled += bytes([bootkey[p[i]]]) + return bootkey_scrambled + + +def get_hbootkey(samaddr, bootkey): + sam_account_path = [b"SAM", b"Domains", b"Account"] + + root = get_root(samaddr) + if not root: + return None + + sam_account_key = open_key(root, sam_account_path) + if not sam_account_key: + return None + + F = None + for v in values(sam_account_key): + if v.Name == b'F': + F = samaddr.read(v.Data.value, v.DataLength.value) + if not F: + return None + + revision = ord(F[0x00]) + if revision == 2: + md5 = hashlib.md5(F[0x70:0x80] + aqwerty + bootkey + anum) + rc4_key = md5.digest() + rc4 = RC4(rc4_key) + hbootkey = rc4.encrypt(F[0x80:0xA0]) + + return hbootkey + + elif revision == 3: + iv = F[0x78:0x88] + encryptedHBootKey = F[0x88:0xA8] + cipher = AESModeOfOperationCBC(bootkey, iv=iv) + hbootkey = b"".join([cipher.decrypt(encryptedHBootKey[i:i + AES_BLOCK_SIZE]) for i in range(0, len(encryptedHBootKey), AES_BLOCK_SIZE)]) + + return hbootkey[:16] + + +def get_user_keys(samaddr): + user_key_path = [b"SAM", b"Domains", b"Account", b"Users"] + root = get_root(samaddr) + if not root: + return [] + + user_key = open_key(root, user_key_path) + if not user_key: + return [] + + return [k for k in subkeys(user_key) if k.Name != b"Names"] + + +def decrypt_single_hash(rid, hbootkey, enc_hash, lmntstr): + if enc_hash == "": + return "" + (des_k1, des_k2) = sid_to_key(rid) + d1 = des(des_k1, ECB) + d2 = des(des_k2, ECB) + md5 = hashlib.md5() + md5.update(hbootkey[:0x10] + pack("<L", rid) + lmntstr) + rc4_key = md5.digest() + rc4 = RC4(rc4_key) + obfkey = rc4.encrypt(enc_hash) + hash_ = d1.decrypt(obfkey[:8]) + d2.decrypt(obfkey[8:]) + return hash_ + + +def decrypt_single_salted_hash(rid, hbootkey, enc_hash, lmntstr, salt): + if enc_hash == "": + return "" + (des_k1, des_k2) = sid_to_key(rid) + d1 = des(des_k1, ECB) + d2 = des(des_k2, ECB) + cipher = AESModeOfOperationCBC(hbootkey, salt) + obfkey = b"".join([cipher.decrypt(enc_hash[i:i + AES_BLOCK_SIZE]) for i in range(0, len(enc_hash), AES_BLOCK_SIZE)]) + + hash_ = d1.decrypt(obfkey[:8]) + d2.decrypt(obfkey[8:16]) + return hash_ + + +def get_user_hashes(user_key, hbootkey): + samaddr = user_key.space + rid = int(user_key.Name, 16) + V = None + for v in values(user_key): + if v.Name == 'V': + V = samaddr.read(v.Data.value, v.DataLength.value) + if not V: return None + hash_offset = unpack("<L", V[0xa8:0xa8+4])[0] + 0xCC + + lm_offset_bytes = V[0x9c:0x9c+4] + nt_offset_bytes = V[0x9c+12:0x9c+16] + lm_offset = unpack("<L", lm_offset_bytes)[0] + 204 + nt_offset = unpack("<L", nt_offset_bytes)[0] + 204 + + lm_revision = int(codecs.encode(V[lm_offset+2:lm_offset+3], 'hex').decode(), 16) + if lm_revision == 1: + lm_exists = True if unpack("<L", V[0x9c+4:0x9c+8])[0] == 20 else False + enc_lm_hash = V[hash_offset+4:hash_offset+20] if lm_exists else "" + lmhash = decrypt_single_hash(rid, hbootkey, enc_lm_hash, almpassword) + + elif lm_revision == 2: + lm_exists = True if unpack("<L", V[0x9c+4:0x9c+8])[0] == 56 else False + lm_salt = V[hash_offset+4:hash_offset+20] if lm_exists else "" + enc_lm_hash = V[hash_offset+20:hash_offset+52] if lm_exists else "" + lmhash = decrypt_single_salted_hash(rid, hbootkey, enc_lm_hash, almpassword, lm_salt) + + nt_revision = int(codecs.encode(V[nt_offset+2:nt_offset+3], 'hex').decode(), 16) + if nt_revision == 1: + nt_exists = True if unpack("<L", V[0x9c+16:0x9c+20])[0] == 20 else False + enc_nt_hash = V[nt_offset+4:nt_offset+20] if nt_exists else "" + nthash = decrypt_single_hash(rid, hbootkey, enc_nt_hash, antpassword) + + elif nt_revision == 2: + nt_exists = True if unpack("<L", V[0x9c+16:0x9c+20])[0] == 56 else False + nt_salt = V[nt_offset+8:nt_offset+24] if nt_exists else "" + enc_nt_hash = V[nt_offset+24:nt_offset+56] if nt_exists else "" + nthash = decrypt_single_salted_hash(rid, hbootkey, enc_nt_hash, antpassword, nt_salt) + + return lmhash, nthash + + +def get_user_name(user_key): + samaddr = user_key.space + V = None + for v in values(user_key): + if v.Name == b'V': + V = samaddr.read(v.Data.value, v.DataLength.value) + if not V: + return None + + name_offset = unpack("<L", V[0x0c:0x10])[0] + 0xCC + name_length = unpack("<L", V[0x10:0x14])[0] + + username = V[name_offset:name_offset + name_length].decode('utf-16-le') + return username + + +def dump_hashes(sysaddr, samaddr): + bootkey = get_bootkey(sysaddr) + hbootkey = get_hbootkey(samaddr, bootkey) + results = [] + for user in get_user_keys(samaddr): + lmhash, nthash = get_user_hashes(user, hbootkey) + if not lmhash: + lmhash = empty_lm + if not nthash: + nthash = empty_nt + results.append( + "%s:%d:%s:%s:::" % (get_user_name(user), int(user.Name, 16), codecs.encode(lmhash, 'hex').decode(), + codecs.encode(nthash, 'hex').decode())) + return results + + +def dump_file_hashes(syshive_fname, samhive_fname): + sysaddr = HiveFileAddressSpace(syshive_fname) + samaddr = HiveFileAddressSpace(samhive_fname) + return dump_hashes(sysaddr, samaddr) |