Search Evasion Techniques
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Call Trick Anti-Disassembly
The call trick is an anti-disassembling technique that involves modifying the default function's return address. This can be used in conjunction with other techniques, such as the insertion of garbage bytes, to break disassemblers. Disassemblers that use recursive traversal or linear sweep may be particularly vulnerable to this trick, as they may be unable to accurately interpret the next instruction …
Opcode Obfuscation Anti-Disassembly
Opcode obfuscation is an anti-disassembling technique that involves modifying the opcodes of a program's machine language instructions in order to make it more difficult for a disassembler to accurately reconstruct the original instructions. This can be done in a variety of ways, such as by using equivalent but different opcodes for the same operation, by adding additional instructions or data …
Disassembly Desynchronization Anti-Disassembly
Disassembly desynchronization is a technique that is used to prevent disassemblers from accurately reconstructing the original instructions of a program. It involves the creative use of instructions and data in a way that breaks the normal, predictable sequence of instructions in a program. This can cause disassemblers to become "desynchronized" and generate incorrect disassembly output.
For example, suppose a …