Search Results for: exploit writing tutorial
Happy 5th Birthday Corelan Team
Introduction Corelan Team was founded in September of 2009. Over the last few years, the team has written and published numerous tutorials on exploit development. We have created a series of tools and scripts, and worked with vendors/developers across the globe to report vulnerabilities in their applications. To make it easier for people to reach […]
Corelan Team reply to false allegation made by Kaspersky
Hi, A few moments ago, I was informed about an article on www.securelist.com and the fact that Corelan Team was mentioned in that post. Apparently a researcher at Kaspersky Labs found a piece of text (“You have been owned by CorelanX”) inside a malware sample and concluded that, due to the mere presence of that […]
Root Cause Analysis – Integer Overflows
Foreword Over the past few years, Corelan Team has received many exploit related questions, including “I have found a bug and I don’t seem to control EIP, what can I do ?”; “Can you write a tutorial on heap overflows” or “what are Integer overflows”. In this article, Corelan Team member Jason Kratzer (pyoor) tries […]
DEPS – Precise Heap Spray on Firefox and IE10
Introduction Last week, while doing my bi-weekly courseware review and update, I discovered that my heap spray script for Firefox 9 no longer works on recent versions. Looking back at the type of tricks I had to use to make a precise spray work under Firefox 9 and IE 9, and realizing that these changes […]
About Corelan Team
The Team Corelan Team is a group of IT Security researchers/enthusiasts/professionals/hobbyists who share the same interests, mainly focused on 3 things : Research : We like to work together to perform all kinds of security research, ranging from finding vulnerabilities and working with vendors/developers to get them fixed, over developing and documenting exploitation techniques to […]
Many roads to IAT
A few days ago a friend approached me and asked how he could see the import address table under immunity debugger and if this could be done using the command line.
I figured this would be a good time to take a look at what the IAT is, how we can list the IAT and what common reversing hurdles could be with regards to the IAT.
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WoW64 Egghunter
Traditional Egghunter An Egghunter is nothing more than an assembly routine to find shellcode somewhere in memory. We typically deploy an Egghunter when there is no more room in our buffer that we can use to initially redirect EIP to. If we are able to load our shellcode elsewhere in process memory, the Egghunter will […]
Metasploit Bounty – the Good, the Bad and the Ugly
On June 14, 2011 HD Moore announced the Metasploit Bounty contest, offering a cash incentive for specific vulnerabilities to be submitted as modules in the Metasploit Framework. Titled “30 exploits, $5000 in 5 weeks”, a post on the Rapid7 blog lists the 30 “bounties” selected by the MSF team, waiting for someone to claim and submit a working exploit module.
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Universal DEP/ASLR bypass with msvcr71.dll and mona.py
Over the last few weeks, there has been some commotion about a universal DEP/ASLR bypass routine using ROP gadgets from msvcr71.dll (written by Immunity Inc) and the fact that it might have been copied into an exploit submitted to Metasploit as part of the Metasploit bounty.
I’m not going to make any statements about this, but the ROP routine itself looks pretty slick.
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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 […]
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