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RE: wonder what tools or test was used
From: "MARTIN Benoni" <benoni.martin () arcelor com>
Date: Tue, 18 Jul 2006 17:40:30 +0200

Cain & Abel from oxid :) 

-----Message d'origine-----
De : Mueller, Daniel [mailto:daniel.mueller () nmci-isf com] 
Envoyé : lundi 17 juillet 2006 18:03
À : pen-test () securityfocus com
Objet : RE: wonder what tools or test was used

 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


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