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Windows Anti-Debug Reference

Author Nicolas Falliere
Author email nicolas.falliere@gmail.com
Author website http://www.securityfocus.com/
Description This paper classifies and presents several anti-debugging techniques used on Windows NT-based operating systems.
Anti-debugging techniques are ways for a program to detect if it runs under control of a debugger. They are used by commercial executable protectors, packers and malicious software, to prevent or slow-down the process of reverse-engineering.

We'll suppose the program is analyzed under a ring3 debugger, such as OllyDbg on Windows platforms. The paper is aimed towards reverse-engineers and malware analysts.

Note that we will talk purely about generic anti-debugging and anti-tracing techniques. Specific debugger detection, such as window or processes enumeration, registry scanning, etc. will not be addressed here.
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Size 129.80kB
Date Saturday 15 September 2007 - 16:30:43
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