Search Results for: debug ike
Happy 5th Birthday Corelan Team
Table of ContentsIntroductionDiscounts (in alphabetical order):Hak5Hex-RaysMalformity LabsNetsparkerNo Starch PressPatervaRapid7SANSSecurity RootsSyngressYour name here ? 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 […]
Using DBI for solving Reverse Engineering 101 – Newbie Contest from eLearnSecurity
Introduction Last weekend I had some time so I wanted to have a look at a reversing challenge which you can find here: https://www.ethicalhacker.net/features/special-events/reverse-engineering-101-newbie-contest-webcast-elearnsecurity Reverse Engineering 101 Contest Steps Get the exe to be hacked Break it open and start exploring. The only rule for the challenge is that it has to be solved by […]
Root Cause Analysis – Integer Overflows
Table of ContentsForewordIntroductionAnalyzing the Crash DataIdentifying the Cause of ExceptionPage heapInitial analysisReversing the Faulty FunctionDetermining ExploitabilityChallengesPrerequisitesHeap BasicsLookaside ListsFreelistsPreventative Security MeasuresSafe-UnlinkingHeap CookiesApplication Specific ExploitationThoughts on This AttackGeneric Exploitation MethodsLookaside List OverwriteOverviewApplication Specific TechniqueWhy Not?Brett Moore: Wrecking Freelist[0] Since 2005Freelist[0] Insert AttackOverviewApplication Specific TechniqueWhy Not?Freelist[0] Searching AttackOverviewApplication Specific TechniqueWhy Not?ConclusionRecommended Reading Foreword Over the past few years, […]
Root Cause Analysis – Memory Corruption Vulnerabilities
Introduction For the past year or so I’ve spent a significant amount of time fuzzing various applications with the hopes of identifying exploitable crashes. Early on in my research I quickly realized that building fuzzers and generating large quantities of crashes, even for heavily targeted applications, was easy. However, determining the exploitability of these crashes, […]
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 […]
Heap Layout Visualization with mona.py and WinDBG
Introduction Time flies. Almost 3 weeks have passed since we announced the ability to run mona.py under WinDBG. A lot of work has been done on mona.py in the meantime. We improved stability and performance, updated to pykd.pyd 0.2.0.14 and ported a few additional immlib methods to windbglib. I figured this would be a good […]
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 […]
Reversing 101 – Solving a protection scheme
In this post, we’ll look at an application reversing challenge from HTS (hackthissite.org) resembling a real-life protection scheme.
Put simple, the program creates a key for your username, and compares it to the one you enter.
The goal of the HTS challenge is to create a key generator, but I just want to demonstrate how to retrieve the password.
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BlackHat EU 2012 – Day 3
Good morning, Since doing live-blogging seemed to work out pretty well yesterday, I’ll do the same thing again today. Please join in for day 3 at BlackHat Europe 2012, in a cloudy and rainy Amsterdam. The first talk I attended today was : “Secure Password Managers” and “Military Grade Encryption” on Smartphones Andrey Belenko and […]
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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