Obfuscator is a tool to modify x86 assembler source code in this way to make an analysis of compiled code very difficult.

Obfuscator features:
MASM syntax only, processing of @@ labels, detection of local variables, constant equ values, and numbers in different formats (hex, dec)
changing code execution flow (non linear code path) - it's usefull against all kinds of debuggers, analysis of such code is very "unpleasant"
mutation of original instructions into series of other equivalent opcodes - obfuscator can mutate both arithmetic and logical opcodes
hiding of direct calls to functions (including WinApi calls)
inserting garbage opcodes between real instructions (so called "junks")
inserting fake instructions between real ones, 32/16/8 opcodes are generated
no support for code with assume directives
obfuscated code is slower than the original code

http://www.pelock.com/download/obfuscator10.zip

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