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From: Trey.Keifer at fishnetsecurity.com (Keifer, Trey) Subject: Working GDI+ JPEG exploit code? 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 The information transmitted in this e-mail is intended only for the addressee and may contain confidential and/or privileged material. Any interception, review, retransmission, dissemination, or other use of, or taking of any action upon this information by persons or entities other than the intended recipient is prohibited by law and may subject them to criminal or civil liability. If you received this communication in error, please contact us immediately at 816.421.6611, and delete the communication from any computer or network system.
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