Search Results for: exploit writing tutorial
Exploit writing tutorial part 3 : SEH Based Exploits
In the first 2 parts of the exploit writing tutorial series, I have discussed how a classic stack buffer overflow works and how you can build a reliable exploit by using various techniques to jump to the shellcode. The example we have used allowed us to directly overwrite EIP and we had a pretty large […]
Exploit writing tutorial part 2 : Stack Based Overflows – jumping to shellcode
Where do you want to jmp today ? In one of my previous posts (part 1 of writing stack based buffer overflow exploits), I have explained the basisc about discovering a vulnerability and using that information to build a working exploit. In the example I have used in that post, we have seen that ESP […]
Exploit writing tutorial part 1 : Stack Based Overflows
Last friday (july 17th 2009), somebody (nick)named ‘Crazy_Hacker’ has reported a vulnerability in Easy RM to MP3 Conversion Utility (on XP SP2 En), via packetstormsecurity.org. (see http://packetstormsecurity.org/0907-exploits/). The vulnerability report included a proof of concept exploit (which, by the way, failed to work on my MS Virtual PC based XP SP3 En). Another exploit was […]
Corelan Training "Corelan Live – Win32 Exploit Development Bootcamp"
Introduction Starting this year, Corelan will be teaching live Win32 exploit development classes at various security conferences. Titled “Corelan Live – Win32 Exploit Development Bootcamp“, this 2-day instructor-led course will teach everything you need to know about writing exploits for a Win32 environment and exploiting stack based vulnerabilities. During the first day, all basics about […]
Offensive Security Exploit Weekend
Introduction I’m excited and honored to be able to announce that Sud0, one of our Corelan Team members, has won the Offensive Security Exploit weekend, an exploiting exercise only available to Offensive Security certified alumni. The challenge was built around a vulnerability in Foxit Reader. Each participant was pointed to a Proof of Concept exploit, […]
Exploit notes – win32 eggs-to-omelet
In article 8 of my exploit writing series, I have introduced the concept of egg hunters, and explained what an omelet hunter is and how it works. Today, I want to share with you my own eggs-to-omelet implementation, explain how it works, and how you can use it in a standalone exploit or in a […]
Exploiting Ken Ward Zipper : Taking advantage of payload conversion
In the article I wrote on the abysssec.com website, I explained the steps and techniques needed to build a working exploit for Ken Ward’s zipper. One of the main difficulties I had to overcome when building the exploit, was the character set limitation. I basically could only use a subset of the ascii characters (only […]
mona.py – the manual
This document describes the various commands, functionality and behaviour of mona.py.
Released on june 16, this pycommand for Immunity Debugger replaces pvefindaddr, solving performance issues and offering numerous new features. pvefindaddr will still be available for download until all of its functionality has been ported over to mona.
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Windows 10 egghunter (wow64) and more
Introduction Ok, I have a confession to make, I have always been somewhat intrigued by egghunters. That doesn’t mean that I like to use (or abuse) an egghunter just because I fancy what it does. In fact, I believe it’s a good practise to try to avoid egghunters if you can, as they tend to […]
How to become a pentester
Intro I receive a lot of emails. (Please don’t make it worse, thanks!) Unfortunately I don’t have as much spare time as I used to, or would like to, so I often have no other choice than to redirect questions to our forums or our IRC channel (#corelan on freenode), hoping that other members […]
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