Talk:Polymorphic code
GOTO Loop IF NOT A = (Decryption_Code - Encrypted)
Uhh... should that be A = Decryption_Code?
better method
Make the polymorphism engine be like the back end of a compiler, complete with a register allocator and so on. Feed it a typical compiler-style intermediate representation of your code.
Now you can easily randomize basic block ordering, register assignment, opcode selection, etc.