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www.waraxe.us Forum Index -> PhpBB -> Question about XSS Remote Cookie Disclosure Exploiting
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Question about XSS Remote Cookie Disclosure Exploiting
PostPosted: Sat Apr 15, 2006 6:04 am Reply with quote
Vixje
Active user
Active user
Joined: Mar 25, 2006
Posts: 35




Hi there,

I have setup a test account and managed to steal my own cookie. I guess this was the easy part. Here's the output of my cookie stealer:

Cookie: phpbb2mysql_t=a:1:{i:110;i:1145043838;}; phpbb2mysql_data=a:2:{s:11:\"autologinid\";s:33:\"205340551044400583937258.37903461\";s:6:\"userid\";i:193;}; phpbb2mysql_sid=dd583d8eb8a767dcaf15efc2f751a272
IP: 210.14.4.82
Date and Time: 14 April, 2006, 10:27 pm
Referer: http://10.23.44.4/forum/posting.php

I'm really having a hard time decyphering this and reading a hash from it. I can see the session id, but i dont think this would help me much since you always need to relog when u enter admin cp.

Any gurus out there?
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Re: Question about XSS Remote Cookie Disclosure Exploiting
PostPosted: Sat Apr 15, 2006 10:08 pm Reply with quote
Indiction
Regular user
Regular user
Joined: Apr 12, 2006
Posts: 11




Vixje wrote:
\"205340551044400583937258.37903461\"


I think this is supposed to by the hash, but why is it a floating point number?

There is a way to get around relogging in admin CP you know with just the SID. Try this, for example

http://forum/phpbb/admin/usercp.php?sid=<your sid>&<enter an arguement for usercp here to execute>

Does this make sense? Correct me if I'm wrong and ask me if its unclear.
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PostPosted: Sun Apr 16, 2006 10:36 pm Reply with quote
Vixje
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Active user
Joined: Mar 25, 2006
Posts: 35




Hmm weird, I always assumed phpbb uses md5. Guess i was wrong Wink
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PostPosted: Tue Apr 18, 2006 1:41 pm Reply with quote
beastyarny
Regular user
Regular user
Joined: Apr 18, 2006
Posts: 5
Location: Russia




it's not a hash, this is user identifier in phpbb forum version 2.0.18/19....
so it cann't be decoded. the real hash is stored in data base and didn't transmitted in cookies
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PostPosted: Tue Apr 18, 2006 6:45 pm Reply with quote
syntax9
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Joined: Dec 21, 2005
Posts: 33




beastyarny if you know of a way with .18 / .19 with the new indentifier please let me know, ive been trying for months on a certain site and i always get the same cookies with the decial. 31 bit hash.
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Question about XSS Remote Cookie Disclosure Exploiting
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