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www.waraxe.us Forum Index -> Newbies corner -> IPB, Dictionary
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IPB, Dictionary
PostPosted: Tue Jan 08, 2008 1:21 pm Reply with quote
lmaoqwerty
Regular user
Regular user
Joined: Jan 06, 2008
Posts: 11




So the other day i was thinking...why do we go through all the trouble to make exploits that get us the MD5 Hash of a program?

Wouldn't it be much easier to make an exploit that brute forces the password of a specified username (not the Member ID) using a dictionary? It would be so much easier, no?
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Re: IPB, Dictionary
PostPosted: Tue Jan 08, 2008 1:55 pm Reply with quote
waraxe
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Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




lmaoqwerty wrote:
So the other day i was thinking...why do we go through all the trouble to make exploits that get us the MD5 Hash of a program?

Wouldn't it be much easier to make an exploit that brute forces the password of a specified username (not the Member ID) using a dictionary? It would be so much easier, no?


There are two ways to bruteforce and wordlist attacking:

1. online attack
2. offline attack

Your idea involves first method. Of course, you can run bruteforce or wordlist attacks against REMOTE target, but it has drawbacks:

a) it's slow (like ~100 000 times or more slower) Smile
2) server logs will be filled with "noise"
3) anti-bruteforce measures can be in place
4) CAPTCA can be used against bots and scripts

If you manage to steal hash from remote database, then local (offline) cracking is available and you have now greatly better chances to crack password, compared to online method.

Even better - there are lot's of web applications with weak session management design, so that stealed hash can be "reused" without even knowing original plaintext password.
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IPB
PostPosted: Wed Jan 09, 2008 3:17 am Reply with quote
lmaoqwerty
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Joined: Jan 06, 2008
Posts: 11




yeh i have this guy's hash, and by editing the cookies i can get access to his account even without the password. But I still want to know his password. Because it could be the same as his msn password and what-not. So anyways, my question is this:

How can i do an online attack?
How do I crack an IPB 2.1.5 hash that is salted?

Thanks,
Later
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PostPosted: Wed Jan 09, 2008 6:58 am Reply with quote
pexli
Valuable expert
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Joined: May 24, 2007
Posts: 665
Location: Bulgaria




I see you get his hash and salt.Use PasswordsPro to crack it.
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IPB, Dictionary
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