Security Archives - Page 5 of 11 - Corelan | Exploit Development & Vulnerability Research

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)... Read more

Offensive Security Hacking Tournament – How strong was my fu ?

Hi,

Over the last 2 days my friends from Corelan Team and I participated in a Hacking Tournament, organized by Offensive Security. The primary goals of the tournament are :

be the first one to grab “secret” Read more

corelanc0d3r interviewed by Slo-Tech

Introduction: We continue our series of interviews with a slightly »unusual« talk this time: Peter Van Eeckhoutte may be unknown to readers who don’t follow the InfoSec scene on a daily basis. But he is well known to Read more

Blackhat Europe 2010 Barcelona – Day 10

I got up early this morning, trying to be sharp and well prepared for day 2 of the BlackHat briefings. As some of you may know, I’m not really a morning person, so I usually need some time to Read more

Blackhat Europe 2010 Barcelona – Day 01

As some of you might know, I am currently attending Blackhat Europe (hosted in Barcelona this year). So I wanted to take the opportunity to fill you in on the details of this first day of briefings, and provide Read more

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 Read more

QuickZip Stack BOF 0day: a box of chocolates

Over the last couple of weeks, ever since I published 2 articles on the Offensive Blog, I have received many requests from people asking me if they could get a copy of those articles in pdf format. My blog Read more

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/

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