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Working GDI+ JPEG exploit code?
From: "Keifer, Trey" <Trey.Keifer () fishnetsecurity com>
Date: Thu, 21 Oct 2004 10:50:38 -0500

I have been testing the code on k-otik's site for the last 3 days and have been unable to get the
reverse shell technique working. My test environment consists of a winxp sp1 machine in a vmware
session and a fully patched winxp sp2 host machine. The code reliably crashes explorer when a
directory with a malicious jpeg is browsed, but my netcat listener on the host never picks up
anything. 

My thoughts now are that because the exploit is heap based, its never jumping to a point anywhere in
the NOP sleds and thus, never finding my shellcode. I ran it through ollydbg and see that EDX contains
my SC, but EIP is not under our control so we have no way to point to it. 

This is my first real in-depth analysis, so go easy...

---
Trey Keifer
Security Engineer - Level II
Fishnet Security

Direct: 816.701.2073
Main: 816.421.6611
Toll Free: 888.732.9406
Fax: 816.474.0394

http://www.fishnetsecurity.com




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