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New whitepaper: Writing IA32 Restricted Instruction Set Shellcode Decoder Loops
From: "Berend-Jan Wever" <skylined () edup tudelft nl>
Date: Tue, 16 Nov 2004 18:19:44 +0100
This one got rejected by phrack and I couldn't be arsed to rewrite it so it would make the next edition:
"Writing IA32 Restricted Instruction Set Shellcode Decoder Loops" by SkyLined
( http://www.edup.tudelft.nl/~bjwever/whitepaper_shellcode.html )
The article addresses the requirements for writing a shellcode decoder loop using a limited number of characters that
limits our instruction set. Most of it is based on my experience with alphanumeric decoders but the principles apply to
any piece of code that is written to work with a limited instruction set. (It's a continuation on rix's and obscou's
work for phrack).
Comments and questions welcome, but I can not guarantee an answer to n00b questions.
<skylined () edup tudelft nl>
Full-Disclosure - We believe in it.
- New whitepaper: Writing IA32 Restricted Instruction Set Shellcode Decoder Loops Berend-Jan Wever (Nov 16)