OVERVIEW
creddump is a python tool to extract various credentials and secrets from
Windows registry hives. It currently extracts:
* LM and NT hashes (SYSKEY protected)
* Cached domain passwords
* LSA secrets
It essentially performs all the functions that bkhive/samdump2,
cachedump, and lsadump2 do, but in a platform-independent way.
It is also the first tool that does all of these things in an offline
way (actually, Cain & Abel does, but is not open source and is only
available on Windows).
REQUIREMENTS
alldump has only been tested on python 2.5. It should work on 2.4 as
well, but will likely need modification before it will work on 2.3 or
below.
python-crypto is required for its MD5/DES/RC4 support. To obtain it,
see: http://www.amk.ca/python/code/crypto
For lsadump: system and SECURITY hives
For cachedump: system and SECURITY hives
For pwdump: system and SAM hives
USAGE
Dump cached domain hashes:
usage: ./cachedump.py <system hive> <security hive>
Dump LSA secrets:
usage: ./lsadump.py <system hive> <security hive>
Dump local password hashes:
usage: ./pwdump.py <system hive> <SAM hive>
FEATURES
* Platform independent operation. The only inputs are the hive files
from the system--we don't rely on any Windows functionality at all.
* Open-source and (hopefully!) readble implementations of Windows
obfuscation algorithms used to protect LSA secrets, cached domain
passwords, and
* A reasonably forgiving registry file parser in pure Python. Look
through framework/types.py and framework/win32/rawreg.py to see how it
works.
* The first complete open-source implementation of advapi32's
SystemFunction005. The version in the Wine source code does not
appear to allow for keys longer than 7 bytes, while the Windows
version (and this version) does. See decrypt_secret() in
framework/win32/lsasecrets.py
AUTHOR
creddump is written by Brendan Dolan-Gavitt ([email protected]).
For more information on Syskey, LSA secrets, cached domain credentials,
and lots of information on volatile memory forensics and reverse
engineering, check out:
http://moyix.blogspot.com/
CREDITS
* AAron Walters. Much of the data type parsing code is taken from
Volatility, an excellent memory analysis framework written in Python.
He's also a really nice guy, and has helped me out a lot in my
research.
https://www.volatilesystems.com/default/volatility
* Massimiliano Montoro (mao), for reversing the mechanism Windows uses
to derive the LSA key so that it can be computed directly from the
hive files, as decribed in this post:
http://oxid.netsons.org/phpBB2/viewtopic.php?t=149
http://www.oxid.it/
* Jeremy Allison, for the details of the obfuscation applied to password
hashes in the SAM, as implemented in the original pwdump.
http://us4.samba.org/samba/ftp/pwdump/
* Nicola Cuomo, for his excellent description of the syskey mechanism
and how it is used to encrypt the SAM in Windows 2000 and above.
http://www.studenti.unina.it/~ncuomo/syskey/
* Eyas[at]xfocus.org, for x_dialupass2.cpp, which demonstrates how to
read LSA secrets directly from the registry, given the LSA key.
http://www.xfocus.net/articles/200411/749.html
[Note: the above is in Chinese, but quite comprehensible if you use
Google Translate and can read C ;)]
* Nicholas Ruff, for his perl implementation of des_set_odd_parity,
which he apparently took from SSLEAY:
http://seclists.org/pen-test/2005/Jan/0180.html
* Arnaud Pilon, for the details of how to retrieve cached domain, as
implemented in cachedump.
http://www.securiteam.com/tools/5JP0I2KFPA.html
* S�bastien Ke, for his cute hexdump recipe:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/142812
LICENSE
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
