Windows 10 x86/wow64 Userland heap
Introduction Hi all, Over the course of the past few weeks ago, I received a number of “emergency” calls from some relatives, asking me to look at their computer because “things were broken”, “things looked different” and “I think my computer got hacked”. I quickly realized that their computers got upgraded to Windows 10. We […]
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 […]
BlackHatEU2013 – Day2 – Advanced Heap Manipulation in Windows 8
Good afternoon everyone, The next talk I will be covering today is presented by Zhenhua ‘Eric’ Liu, Senior Security researcher at Fortinet. Why doing this type of research. Facts : Exploiting memory corruption vulnerabilities are more difficult today, because of OS security improvements and Sandboxing techniques implemented into various applications. Bypassing sandboxes often rely […]
Black Hat Europe 2013 – Preview
Hola dear friends, There’s only a few days left until Black Hat Europe 2013 opens its doors in the beautiful city of Amsterdam, the Netherlands. Just like past years, I’ll be covering some of the briefings (semi) live on www.corelan.be. I’ve you’re a speaker – I’ll be the dude in the front row, typing […]
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, […]
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 […]
HITB2012AMS Day 2 – Ghost in the Allocator
Ghost in the Allocator – Abusing the Windows 7 / 8 Low Fragmentation Heap After introducing himself, Steven Seeley, Senior Penetration Tester and Security Researcher at Stratsec starts his presentation by sharing the talk agenda: Why target the heap manager Heap terms Some Windows 7 theory WIndows 7 exploitation Changes introduced in Windows 8 Heap Windows […]