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 […]
Str0ke R.I.P. (or alive & kicking ?)
I have received a very sad message this morning that str0ke (milw0rm) has passed away yesterday. I sincerely hope this is some (bad and morbid) joke, but if it’s not then all I can say is that this is terrible. My thoughts and prayers are with his family (wife & 4 children) now. Rest in […]
Metasploit Project acquired by Rapid7
Just a few moments ago, Neil Roiter has reported on SearchSecurity that The Metasploit Project (and the Metasploit Framework) has been acquired by Rapid7, a network vulnerability management vendor. This news has been confirmed by Rapid7 (see website) and by Metasploit (see blog) A podcast of a discussion (on the acquisition) between HD Moore and […]
Fuzzing with Metasploit : Simple FTP fuzzer
Just wanted to drop a quick note about the release of another free script. This time I’ve written a simple FTP fuzzer (with a little help from HDMoore) in Metasploit. You can read more about it (and download the script) at http://www.corelan.be:8800/index.php/my-free-tools/security/metasploit/simple-ftp-fuzzer-metasploit-module/ This is why I like Metasploit so much… :-) Update : after running […]
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 […]
WPA TKIP cracked in a minute – time to move on to WPA2
Just a quick note to let you know that 2 Japanese scientists (from Hiroshima and Kobe Universities) have found a practical way to crack WPA TKIP in about one minute, using a technique called “Beck-Tews”. This technique is not new. It has been discovered by some Germans back in november, but was somewhat limited in […]
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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