Exploit Writing Tutorials

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Ken Ward Zipper exploit write-up on abysssec.com

Hi all, I just wanted to drop a few lines to let you know that, earlier today, my exploit write-up article about this vulnerability was published on www.abysssec.com. You can find the article here : http://www.abysssec.com/blog/2010/03/ken-ward-zipper-stack-bof-0day-a-not-so-typical-seh-exploit/ Enjoy !

QuickZip exploit article part 2 released on OffSec Blog

Hi all. I just wanted to drop a quick note that I have released part 2 of the QuickZip 0day vulnerability exploit on the Offensive Security Blog just a few moments ago. You can find the article here. Have fun & cheers !

corelanc0d3r featured on Offensive Security Blog

A few moments ago I published a detailed write-up, explaining the steps I took to build a 0day exploit for a zip file handling bug in QuickZip, on the Offensive Security blog. You can read the article here : http://www.offensive-security.com/blog/vulndev/quickzip-stack-bof-0day-a-box-of-chocolates/

Exploit writing tutorial part 9 : Introduction to Win32 shellcoding

Over the last couple of months, I have written a set of tutorials about building exploits that target the Windows stack. One of the primary goals of anyone writing an exploit is to modify the normal execution flow of the application and trigger the application to run arbitrary code… code that is injected by the […]

Starting to write Immunity Debugger PyCommands : my cheatsheet

When I started Win32 exploit development many years ago, my preferred debugger at the time was WinDbg (and some Olly). While Windbg is a great and fast debugger, I quickly figured out that some additional/external tools were required to improve my exploit development experience. Despite the fact that the command line oriented approach in windbg […]

Exploit writing tutorial part 8 : Win32 Egg Hunting

Introduction Easter is still far away, so this is probably the right time to talk about ways to hunting for eggs (so you would be prepared when the easter bunny brings you another 0day vulnerability) In the first parts of this exploit writing tutorial series, we have talked about stack based overflows and how they […]

Exploit writing tutorial part 7 : Unicode – from 0x00410041 to calc

Finally … after spending a couple of weeks working on unicode and unicode exploits, I’m glad and happy to be able to release this next article in my basic exploit writing series : writing exploits for stack based unicode buffer overflows (wow – that’s a mouthful). You may (or may not) have encountered a situation […]

Exploit writing tutorial part 6 : Bypassing Stack Cookies, SafeSeh, SEHOP, HW DEP and ASLR

Introduction In all previous tutorials in this Exploit writing tutorial series, we have looked at building exploits that would work on Windows XP / 2003 server. The success of all of these exploits (whether they are based on direct ret overwrite or exception handler structure overwrites) are based on the fact that a reliable return […]

Exploit writing tutorial part 5 : How debugger modules & plugins can speed up basic exploit development

In the first parts of this exploit writing tutorial, I have mainly used Windbg as a tool to watch registers and stack contents while evaluating crashes and building exploits. Today, I will discuss some other debuggers and debugger plugins that will help you speed up this process. A typical exploit writing toolkit arsenal should at […]

Exploit writing tutorial part 4 : From Exploit to Metasploit – The basics

In the first parts of the exploit writing tutorial, I have discussed some common vulnerabilities that can lead to 2 types of exploits : stack based buffer overflows (with direct EIP overwrite), and stack based buffer overflows that take advantage of SEH chains. In my examples, I have used perl to demonstrate how to build […]

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