Penetration Testing mailing list archives
Re: RE: Password secured using?
From: Tim <tim-pentest () sentinelchicken org>
Date: Wed, 26 Apr 2006 17:57:44 -0400
When I repeated it often enough. I got this pattern. a=707 aa=7073e aaa=7073e45 aaaa=7073e455b
Looks to me like they are using an iterative hashing function, operating on one byte at a time. If I understood your previous emails, It appears they may be using a 1 character salt and are representing the binary output of the hashing function as hexadecimal (two digits per byte). This of course is just a guess, but given the length of the output is a function of the length of the input (specifically, the function: f(x)=2*x+1), and the output is salted in some way, the 1 is probably the salt. Now, if you generate enough hashes and count the collisions, you could easily calculate the true entropy of the salt, and thus the length. Oh, also, it's possible the hash is really a password encrypted with a stream cipher with a really weak IV. hope that helps, tim ------------------------------------------------------------------------------ This List Sponsored by: Cenzic Concerned about Web Application Security? Why not go with the #1 solution - Cenzic, the only one to win the Analyst's Choice Award from eWeek. As attacks through web applications continue to rise, you need to proactively protect your applications from hackers. Cenzic has the most comprehensive solutions to meet your application security penetration testing and vulnerability management needs. You have an option to go with a managed service (Cenzic ClickToSecure) or an enterprise software (Cenzic Hailstorm). Download FREE whitepaper on how a managed service can help you: http://www.cenzic.com/news_events/wpappsec.php And, now for a limited time we can do a FREE audit for you to confirm your results from other product. Contact us at request () cenzic com for details. ------------------------------------------------------------------------------
Current thread:
- Re: RE: Password secured using? barcajax (Apr 26)
- <Possible follow-ups>
- Re: RE: Password secured using? barcajax (Apr 26)
- Re: RE: Password secured using? Tim (Apr 26)
- Re: RE: Password secured using? Peter Kosinar (Apr 26)
- Re: RE: Password secured using? Krugger (Apr 26)
- RE: RE: Password secured using? Dario Ciccarone (dciccaro) (Apr 26)