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.

whereis is the popf? is pushf?
I have translated it in to Chinese at
http://bbs.pediy.com/attachment.php?attachmentid=8676&d=1189853735
thanks for you sharing
BTW, bbs.pediy.com is the top crack bbs in China
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Link to this comment: http://www.securityfocus.com/comments/infocus/1893/959#959