full-disclosure - w32 SEH omelet shellcode stage

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Message-ID: <3fa2f5bb0903161130o1d139819w937e54bf595247c5@mail.gmail.com>
Date: Mon, 16 Mar 2009 19:30:17 +0100
From: Berend-Jan Wever <berendjanwever@...il.com>
To: full-disclosure@...ts.grok.org.uk, submit@...w0rm.com
Subject: w32 SEH omelet shellcode stage

Hey all,

I'm releasing some code for a technique which I call "omelet shellcode" that
may be useful in some exploits. It is similar to egg-hunt shellcode, but
will search user-land address space for multiple smaller eggs and recombine
them into one larger block of shellcode and execute it. This is useful in
situation where you cannot inject a block of sufficient size into a target
process to store your shellcode in one piece, but you can inject multiple
smaller blocks and execute one of them.

More details can be found here:
http://skypher.com/wiki/index.php?title=Shellcode/w32_SEH_omelet_shellcode
http://code.google.com/p/w32-seh-omelet-shellcode/
I have not had a chance to test this newer version in a live exploit, so do
let me know if you have a chance to use it.

Cheers,
SkyLined

Berend-Jan Wever <berendjanwever@...il.com>
    .----.   ,       ,             ,
   (      ' /       / . _   _   __/
 ,  `'-._  /_-'/ / / / / ) /_) / /
(        )/` )(_/ / / / / (__ (_/
 `------'    __/ '-------'
               http://skypher.com/SkyLined

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