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HITB2014AMS – Day 2 – Exploring and Exploiting iOS Web Browsers

iOS Browsers & UIWebview iOS is very popular (according to StatCounter, it’s the 3rd most popular platform used).  Mobile browsers take about 20% to 25% of the market share. iOS offers integration with desktop browsers and cloud (so the same data is available to an attacker).  Many 3rd party IOS browsers have similar weaknesses which […]

On CVE-2014-1770 / ZDI-14-140 : Internet Explorer 8 "0day"

Hi all, I have received a ton of questions regarding a recently published ZDI advisory, which provides some details about a bug I discovered and reported to Microsoft (via ZDI), affecting Internet Explorer 8.  I wanted to take a few moments to clarify some of the confusion and answer some of the questions in this […]

Jingle BOFs, Jingle ROPs, Sploiting all the things… with Mona v2 !!

Ho Ho Ho friends, It has been a while since we posted something on the Corelan Team blog, I guess we all have been busy doing … stuff and things, here and there.  Nevertheless, as the year is close to filling up 100%, it’s probably a good time to start thinking about finding some convincing […]

HITB2012AMS Day 1 – Window Shopping

Window Shopping: Browser Bugs Hunting in 2012 In the last talk of Day 1, Roberto Suggi Liverani and Scott Bell (not present during the presentation),  security consultants at Security-Assessment.com, will share the results of some intensive browser bug hunting research, and will drop 5 0days. Roberto starts by apologizing about the fact that Scott was not […]

Exploit writing tutorial part 11 : Heap Spraying Demystified

A lot has been said and written already about heap spraying, but most of the existing documentation and whitepapers focus on IE7 or older versions.
Although there are a number of public exploits available that target IE8, the exact technique to do so has not been really documented in detail.
Of course, you can probably derive how it works by looking at those public exploits.

With this tutorial, I’m going to provide you with a full and detailed overview on what heap spraying is, and how to use it on old and newer platforms.
I’ll start with some “ancient” techniques (or classic techniques if you will) that can be used on IE6 and IE7.
We’ll also look at heap spraying for non-browser applications.
Next, we’ll talk about precision heap spraying, which is a requirement to make DEP bypass exploits work on IE8.
I’ll finish this tutorial with sharing some of my own research on getting reliable heap spraying to work on IE9.
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Corelan T-Shirt Contest – Derbycon 2011

September is going to be a busy month.

With Brucon approaching very fast and Derbycon on its way as well, it looks like I will be spending more time at cons than at work :)

I’ll have the pleasure to teach the Corelan Live Exploit Development Bootcamp trainings at Brucon and Derbycon. If you are a student, make sure to check the prerequisites so we’re all set to make the training a success for everyone.
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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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mona.py – the manual

This document describes the various commands, functionality and behaviour of mona.py.

Released on june 16, this pycommand for Immunity Debugger replaces pvefindaddr, solving performance issues and offering numerous new features. pvefindaddr will still be available for download until all of its functionality has been ported over to mona.
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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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Mona 1.0 released !

After spending almost 6 months of designing, developing and testing, and after ‘surviving’ 2 presentations (at AthCon and Hack In Paris), I am extremely excited and proud to present, on behalf of the entire Corelan Team, the general availability of mona.py.

With this announcement, we also declare pvefindaddr officially dead from this point forward. (This doesn’t mean pvefindaddr is now entirely worthless, because not all functions have been ported into mona yet, but we won’t be releasing any updates to pvefindaddr anymore and the entire project page/download page will eventually disappear)
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You can chat with us and our friends on #corelan (freenode IRC)