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Files from Frederic Bourla

Email addressfrederic.bourla at htbridge.ch
First Active2012-07-05
Last Active2013-02-09
Manipulating Memory For Fun And Profit
Posted Feb 9, 2013
Authored by High-Tech Bridge SA, Frederic Bourla | Site htbridge.com

Memory analysis and manipulation can provide security analysts with formidable weapons. During his talk at Information Security Day for ISACA Luxembourg Chapter, Frederic BOURLA presented most memory manipulation tricks from both offensive and defensive angles. The talk first dealt with the attacker’s layer, from pivoting attacks to IEEE1394 issues through in-memory fuzzing, which permits auditors to bypass built-in features, network limitations and encryption to remain able to uncover security vulnerabilities in a running application. In a second stage, the talk focused on the benefits of memory manipulation in computer forensics and malware analysis fields, especially when facing sophisticated malcode, such as kernel rootkits or heavily encrypted reverse trojans. Basically, this talk aimed to open the doors to a fascinating world which could easily allow security analysts to save lots of time during their recurrent duties. These are the slides from the talk.

tags | paper, kernel, trojan, vulnerability
MD5 | 15b76834e6e1d95bcaf4711fcf9bed73
Samsung Kies 2.3.2.12054_20 NULL Pointer Dereference / Access Control
Posted Oct 15, 2012
Authored by High-Tech Bridge SA, Frederic Bourla | Site htbridge.com

Samsung Kies version 2.3.2.12054_20 suffers from a null pointer dereference and multiple improper access control vulnerabilities.

tags | exploit, vulnerability
advisories | CVE-2012-3806, CVE-2012-3807, CVE-2012-3808, CVE-2012-3809, CVE-2012-3810
MD5 | 9321edc7a62af7f1bb4d46609dcdb8de
Adobe Flash Player Integer Overflow Analysis
Posted Oct 12, 2012
Authored by Brian Mariani, High-Tech Bridge SA, Frederic Bourla | Site htbridge.com

This whitepaper is a thorough analysis of the Adobe Flash Player integer overflow vulnerability and documented in CVE-2012-1535.

tags | paper, overflow
advisories | CVE-2012-1535
MD5 | 2f7b202a79782317c94735df44d55943
How To Use PyDbg As A Powerful Multitasking Debugger
Posted Sep 5, 2012
Authored by Brian Mariani, High-Tech Bridge SA, Frederic Bourla | Site htbridge.com

Since its introduction in 2006, PyDbg has become an essential tool for security researchers and reverse engineers. It is mainly used to discover various software vulnerabilities and weaknesses, as well to analyze malware and perform computer forensics. The present publication is aimed to provide a reader with an introduction to the Python based debugger and deliver practical and real examples of this powerful security tool usage.

tags | paper, vulnerability, python
MD5 | fa1f0192c2612420c406a7e1a7afe027
CVE-2012-1889: Security Update Analysis
Posted Jul 23, 2012
Authored by Brian Mariani, High-Tech Bridge SA, Frederic Bourla | Site htbridge.com

Since the 30th of May 2012 hackers were abusing the Microsoft XML core services vulnerability. The 10th of July 2012 Microsoft finally published a security advisory which fixes this issue. The present document and video explains the details about this fix. As a lab test they used a Windows XP workstation with Service Pack 3. The Internet explorer version is 6.0.

tags | paper
systems | windows, xp
advisories | CVE-2012-1889
MD5 | a0d1c207cb55892da09387080f48352a
Microsoft XML Core Services Uninitialized Memory
Posted Jul 5, 2012
Authored by Brian Mariani, High-Tech Bridge SA, Frederic Bourla | Site htbridge.com

This is a thorough analysis of the Microsoft XML core services uninitialized memory vulnerability as noted by CVE-2012-1889. It includes proof of concept data to trigger the issue and goes through the flow.

tags | paper, proof of concept
advisories | CVE-2012-1889
MD5 | dac14355b665d3bf9f9009f567879d5b
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