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www.waraxe.us Forum Index -> PhpNuke -> is there a way to bypass protection? Goto page 1, 2, 3  Next
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is there a way to bypass protection?
PostPosted: Sat Apr 16, 2005 8:26 am Reply with quote
dark_el_diablo
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is there a way to bypass protector system? for example if i want to get the md5 hash of a site
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PostPosted: Sat Apr 16, 2005 9:32 am Reply with quote
shai-tan
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Are they using Sentinel?

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?In short: just say NO TO DRUGS, and maybe you won?t end up like the Hurd people.? -- Linus Torvalds
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PostPosted: Sat Apr 16, 2005 12:15 pm Reply with quote
KingOfSka
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i'm interested too Very Happy
is there a way to bypass Sentinel , or the other 2 security mods i saw, the one blaming you, and giving you a whois on your ip , and the other "you got slapped by nukecop" lol
i've done some "experiments" hoping the query wouldn't be detected, but it was detected...
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PostPosted: Sat Apr 16, 2005 1:13 pm Reply with quote
y3dips
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sentinel use database for many kind of attack that detected, so ?

u need to use 0day exploits Laughing

or why dont try to break the sentinel module first ? Rolling Eyes

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PostPosted: Sat Apr 16, 2005 1:33 pm Reply with quote
KingOfSka
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have you got some 0day to give me ? Razz Razz Razz
i think i'll download the sentinel module and try to understand how it works, then how to bypass it Twisted Evil Twisted Evil but i think it would be hard lol
thanks a lot y3
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PostPosted: Sun Apr 17, 2005 12:52 am Reply with quote
shai-tan
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Some of the 0day exploits don't work either. I've tried.
Sentinel is quick secure.

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?In short: just say NO TO DRUGS, and maybe you won?t end up like the Hurd people.? -- Linus Torvalds
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PostPosted: Sun Apr 17, 2005 5:51 am Reply with quote
y3dips
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KingOfSka wrote:
have you got some 0day to give me ? Razz Razz Razz
i think i'll download the sentinel module and try to understand how it works, then how to bypass it Twisted Evil Twisted Evil but i think it would be hard lol
thanks a lot y3


no problem, just give u some idea
it would be great for you to do a research about that

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PostPosted: Sun Apr 17, 2005 5:57 am Reply with quote
y3dips
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shai-tan wrote:
Some of the 0day exploits don't work either. I've tried.
Sentinel is quick secure.


"quick secure " != 100% secure Rolling Eyes

Laughing if im not wrong, there is one of waraxe advisory already make a funny of "nuke cops" by bypassing the restriction

maybe waraxe will do the same again with senitnel Smile

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PostPosted: Sun Apr 17, 2005 9:50 am Reply with quote
KingOfSka
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tell me if i'm wrong, the mod works in this way:
first, it get the exploit list from the database, then when a user send an HTTP request, the mod checks the request to see if it contains an exploit and take actions.
now i'll try to understand how this databse works..
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PostPosted: Sun Apr 17, 2005 10:14 am Reply with quote
shai-tan
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Your best bet is attacking the module itself. One that hasnt been up dated in a while Wink

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PostPosted: Sun Apr 17, 2005 12:27 pm Reply with quote
y3dips
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KingOfSka wrote:
tell me if i'm wrong, the mod works in this way:
first, it get the exploit list from the database, then when a user send an HTTP request, the mod checks the request to see if it contains an exploit and take actions.
now i'll try to understand how this databse works..


somethin like that
coz im not familiar with sentinel n phpnuke Sad

i dont even know if we modify the request what will happen ?

maybe you could give some try .. or maybe u should find sentinel vulnerabillity Rolling Eyes

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PostPosted: Sun Apr 17, 2005 4:38 pm Reply with quote
KingOfSka
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i gave a quick look at sentinel, it seems it uses regular expression for filtering strings:
Code:

// Check for UNION attack
// Copyright 2004(c) Raven PHP Scripts
$blocker_row = $blocker_array[1];
if($blocker_row['activate'] > 0) {
  if (stristr($nsnst_const['query_string'],'%20union%20') OR stristr($nsnst_const['query_string'],'*/union/*') OR stristr($nsnst_const['query_string'],' union ') OR stristr($nsnst_const['query_string_base64'],'%20union%20') OR stristr($nsnst_const['query_string_base64'],'*/union/*') OR stristr($nsnst_const['query_string_base64'],' union ')) {
    block_ip($blocker_row);
  }
}


so the base 64 way and the urlencoded one are useless..
now i'll do some test with comment, do you think the chr() way would work?
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PostPosted: Sun Apr 17, 2005 6:11 pm Reply with quote
waraxe
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Sentinel is not Holy Grail of the phpnuke webmaster, it's not perfect. I mean, you can't just add many different "protection" systems to full of holes phpnuke engine and then hope, that maybe you can sleep well tonight, without fear to discover next morning defaced website Laughing
Wait for some time, i'm working currently with Sentinel and there will be advisory soon, i think Shocked Rolling Eyes Very Happy
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PostPosted: Sun Apr 17, 2005 6:36 pm Reply with quote
KingOfSka
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ehhehe great as usual waraxe Wink
i'm testing but i think you'll find a way to defeat sentinel before me lol

**edit: just tested , commenting queryies won't work Crying or Very sad Crying or Very sad Crying or Very sad Crying or Very sad
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PostPosted: Sun Apr 17, 2005 7:35 pm Reply with quote
waraxe
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Heh Shocked
I have found method to bypass all the UNION filters. For test i used phpnuke 7.5 installation with sentinel (all the features activated) and then tried to exploit my last #41 bug. Of course, i had been stopped at first, but then i tried some camoflague methods and Wink

So, advisory will be out soon, thats for sure. Should i contact Sentinel developers first? Question
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is there a way to bypass protection?
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