From: Mueller, Daniel (daniel.mueller@nmci-isf.com)
Date: Mon Jul 17 2006 - 12:03:26 EDT
Is there a decent Brute Force Password hash tester for NTLM V2 hashes
or passphrases?
Thanks
Dan
-----Original Message-----
From: Gareth Davies [mailto:gareth.davies@mynetsec.com]
Sent: Monday, July 17, 2006 4:05 AM
To: Brent Clark
Cc: pen-test@securityfocus.com
Subject: Re: wonder what tools or test was used
Brent Clark wrote:
> Hey all
>
> With the hack on Debian,s gluck machine and the writes up about it.
> In the 5th paragraph of the following link:
>
> http://www.zdnet.com.au/news/security/soa/Debian_locks_out_developers_
> after_server_hack/0,2000061744,39263432,00.htm
>
>
> It reads
> "An investigation of developer passwords revealed a number of weak
> passwords whose accounts have been locked in response," Schulze wrote.
>
> My question is, how would they go about that? What tools or tests were
> needed to test whether an account has a strong or weak password.
>
> The only thing I can think of is a foreach on the usernames and some
> type of brute force / dictionary attack. I suppose it would have been
> nice if they mentioned the service / protocal that was compromised.
>
>
>
Brute forcing the password hashes with a straight simple dictionary list
would show which accounts have weak passwords, a hybrid attack could
show which accounts have stronger but still unsatisfactory passwords.
Any tool could be used such as JTR or Cain and Abel or even the now
defunct but very fast L0phtcrack.
They could have even blasted through it really quickly with Rainbow
Tables and the time memory trade off.
They machine was comprised through a local 2.6.x kernel exploit, a core
dump problem where it doesn't allocate permissions properly.
It's the PRCTL Core Dump Handling exploit - BID 18874 / CVE-2006-2451
-- Gareth Davies - ISO 27001 LA, OPST Manager - Security Practice Network Security Solutions MSC Sdn. Bhd. Suite E-07-21, Block E, Plaza Mont' Kiara, No. 2 Jalan Kiara, Mont' Kiara, 50480 Kuala Lumpur, Malaysia Phone: +603-6203 5303 or +603-6203 5920 www.mynetsec.com ------------------------------------------------------------------------ ------ 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. ------------------------------------------------------------------------ ------ ------------------------------------------------------------------------------ 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. ------------------------------------------------------------------------------
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