Hack Notes : Ropping eggs for breakfast
Introduction I think we all agree that bypassing DEP (and ASLR) is no longer a luxury today. As operating systems (such as Windows 7) continue to gain popularity, exploit developers are forced to deal with increasingly more memory protection mechanisms, including DEP and ASLR. From a defense perspective, this is a good thing. But we […]
Case Study: SolarWinds Orion (video)
Special Thanks: To my wife for putting up with my crap. Also SolarWinds for keeping an open communication while fixing the issue. And of course… Corelan Team :P Audio: Many thanks to DJ Great Scott for supplying me with the music. Definitely check out some of his work! http://soundcloud.com/greatscott http://glitch.fm/ Music in Video: Defcon (Samples […]
Exploit writing tutorial part 10 : Chaining DEP with ROP – the Rubik’s[TM] Cube
About 3 months after finishing my previous exploit writing related tutorial, I finally found some time and fresh energy to start writing a new article.
In the previous tutorials, I have explained the basics of stack based overflows and how they can lead to arbitrary code execution. I discussed direct RET overflows, SEH based exploits, Unicode and other character restrictions, the use of debugger plugins to speed up exploit development, how to bypass common memory protection mechanisms and how to write your own shellcode.
While the first tutorials were really written to learn the basics about exploit development, starting from scratch (targeting people without any knowledge about exploit development) you have most likely discovered that the more recent tutorials continue to build on those basics and require solid knowledge of asm, creative thinking, and some experience with exploit writing in general.
Today’s tutorial is no different. I will continue to build upon everything we have seen and learned in the previous tutorials. Today I will talk about ROP and how it can be used to bypass DEP (and ASLR)…
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