THE

SPRAWL

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    automatic password rule analysis and generation

    The field of password cracking has evolved by leaps an bounds over the last decade with the introduction of new cracking techniques, more advanced software and significantly faster hardware. One area which I find most fascinating is rule-based cracking. An attacker can develop a set of word mangling rules (e.g. substitute all 'a's to '@'s, upper-case every third letter, etc.) in order to attack non-random passwords which use slightly modified dictionary words. The purpose of this research is to develop an automated method of analyzing a large body of leaked passwords in order to come up with a list of frequently used words and rules to make up passwords. Read more.

    08 aug
    2013
    smarter password cracking with pack

    Last week I gave a talk during the Password '13 security conference on various password analysis and pattern detection attacks using the Password Analysis and Cracking Kit. You can download slides for the presentation here.

    The conference itself was an absolute blast with great organization by Per Thorsheim and Jeremi Gosney. The conference gathered a fascinating crowd which spawned hours of great discussions on password security, cryptography, politics and everything in between. However, I especially enjoyed meeting in real life with many members of Team Hashcat.

    Team Hashcat had another great run at the CMIYC during Defcon where we placed 2nd. As always I ended up spending most of the conference in the hotel room or the chill room at Defcon, but that's part of the fun doing contests. Russia-based team Inside-Pro placed first by scoring more points on harder hashes, молодцы ребята!

    Today, I have finally finished writing documentation for the many changes and adding the final polish to the next release of PACK 0.0.4. There should be noticeable performance bumps for all of the tools in the toolkit especially Rulegen which is now finally using multiple CPU cores. You should also try out the completely rewritten 'maskgen' which is now capable of generating highly optimized mask collections for use with Hashcat suite of tools (see presentation slides above for more details). Enjoy and most importantly have fun with password cracking! Read more.

    07 aug
    2010
    crack me if you can

    I had an opportunity to participate in the "Crack me if you can" password cracking competition during this year's Defcon. It was a fun and educational experience. Using a couple of video cards, decent processors as well as some research into password generation I was able to place 4th in the contest. In this post you can learn more about hardware, software and strategy used to crack about 25k passwords in two days. Read more.

    26 apr
    2011
    password analysis and cracking kit

    A product of my research into password cracking methods, PACK (Password Analysis and Cracking Kit) is a collection of several utilities to assist in statistical password analysis and generation of cracking rule sets. Read more.

    the dutch hacker video

    A video recording produced by the 2600 Magazine showing an attack on a US Army computer during the summer of 1991. Read more.

    orapass sha1

    Download orapass-sha1.py
    Size 605 bytes
    DateAugust 17th, 2011
    Version0.1

    Orapass SHA1 implements Oracle's newer SHA1-based password hashing algorithm. This script can be used for password strength audit and recovery. Uses Python Hashlib library. Read more.

    john the ripper

    John the Ripper is a multi-platform password cracking tool. Read more.

    orapass des

    Download orapass-des.py
    Size 1.6 KB
    DateFebruary 21st, 2009
    Version0.1

    Orapass implements Oracle's older DES-based password hashing algorithm. This script can be used for password strength audit and recovery. Uses Python Crypto library. Read more.

    bbs: the documentary

    A historical documentary on the subject of BBSs and the underground culture of the 1980s. The documentary includes more than 200 interviews with some of the most influential figures of the BBS era. It is split up into 8 sections ranging from BBS Artscene and FidoNet to Hacking/Phreaking/Anarchy/Cracking underground. Read more.



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