Exploitation of Windows .NET Framework - HITCon 2012 Materials and PoC Release

This presentation describes some possible attack vectors by leveraging features of .NET framework.

Slides
HITCon 2012 - Exploitation of Windows DotNET Framework - Release

Demo video:


And the PoC files.
PoC
pass:hitcon2012

Nanika & TT

The Subway Line 8 - Exploitation of Windows 8 Metro Style Apps

Luckily, this year we had a chance to again present our research in Black Hat USA. Nanika did really great researches on Windows 8 Metro style apps. In this presentation we not only discuss the methodology of AppContainer sandbox (application sandbox with Metro style apps) bypassing, we also disclose some issues/problems that we found during the testing.

Abstract of the presentation:

Windows 8 introduces lots of security improvements; one of the most interesting features is the Metro-style app. It not only provides fancy user interface, but also a solid application sandbox environment. All Metro-style applications run in AppContainer, and the AppContainer sandbox isolates the execution of each application. It can make sure that an App does not have access to capabilities that it hasn't declared and been granted by the user.This presentation will introduce the design of Metro-style app as well as AppContainer sandbox. We will dive into details of the architecture and see how it works, how does it protect from a malicious App attack. After reviewing the design, we are going to look for possible attack vectors to bypass the sandbox. Analysis will start from low level to high level. We will describe how we find the target to attack, and how we do analyze in different layers, such as debug of APLC, COM server attack, WinRT API fuzzing, and logic flaw discovery. Not only the methodology, we will also demonstrate some problems we have discovered, including tricks to bypass AppContainer to access files, launch program, and connect to Internet.

And here is the slides:
Blackhat USA 2012 - The Line 8 Subway - Exploitation of Windows 8 Metro Style App (Slides)

The demo video:


The paper:
Blackhat USA 2012 - The Line 8 Subway - Exploitation of Windows 8 Metro Style App (Paper)


Nanika & TT

Black Hat Materials and PoC Release

It is already a month since our talk in Black Hat USA 2011. It's time to release the materials.

Slides:
Black Hat USA 2011 - Weapons of Targeted Attack: Modern Document Exploit Techniques (Slides)

Demo videos:
Microsoft Office DEP bypass


New Flash JIT Spraying - 01 - Why you need this trick.


New Flash JIT Spraying - 02 - MS11-050 with NEW Flash JIT Spraying.


New Flash JIT Spraying - 03 - CVE-2010-3333 with NEW Flash JIT Spraying (Flash 11)


Flash Sandbox Bypass - Stealing Gmail Cookie using Document Exploit


HIPS Bypass - 01 - Bypass McAfee HIPS


HIPS Bypass - 02 - Bypass COMODO HIPS


And here are PoC files.

Paper:
Black Hat USA 2011 - Weapons of Targeted Attack: Modern Document Exploit Techniques (Paper)

Weapons of Targeted Attack: Modern Document Exploit Techniques

Nanika and me will be speaking at Blackhat USA 2011 next week. The presentation will disclouse many new document exploit techniques, including our new Flash JIT spraying approach.

Our Flash JIT spraying technique could defeat memory protections, even EMET has been adopted and all functions are enabled!

Here are two demonstration videos.
(1) MS11-050 with NEW Flash JIT Spraying (IE)


(2) CVE-2010-3333 with NEW Flash JIT Spraying (Office 2010)


Not only JIT spraying, we will also introduce our Flash AVM fuzzing technique, new tricks to bypass sandbox protection, and new ways to defeat HIPS protection.

See you in Vegas, and welcome to see us and talk to us.

The Flash JIT Spraying is Back

Celebrating the announcement of Hacks in Taiwan Conference 2011, I would like to publish part of our recent researches to share with all document security researchers.

Flash JIT Spraying couldn't work since Flash 10.1. Now we bring it back.

The Flash JIT Spraying is Back

Demonstration:


Welcome to HITCon, welcome to Taiwan.

Our Presentation in Syscan '10 Singapore

You haven't seen office vulnerability research for a long time, right?

Indeed, since Microsoft started adopt exploit mitigation technology in modern OS, and new protection mechanism such as protected view and sandbox techniques, exploiting office application is getting more and more difficult. However, it doesn't stop target-attackers. They have just put their focus on other document applications, such as PDF and Flash, etc.

So is office becoming unbreakable? This presentation shows how did we play with office application, how did we exploit office with interesting ideas and tricks, and how did we against DEP and ASLR.

Syscan 10 - Office is Still Yummy - Nanika TT

Pure Hacking and Pure Technology

We are security guys from Taiwan. We find vulnerabilities. We write exploits. We share our thoughts, ideas, and our researches on this blog.

Pure hacking and pure technology. We are not interested in evil stuffs.

Nanika & TT, members of CHROOT Security Group