This repo is a combination of the following llvm/clang forks:
- https://github.com/Fuzion24/obfuscator/commit/407cb192fea63bdb5afd2cd921e8120c892e8d0a
- https://github.com/obfuscator-llvm/obfuscator/tree/llvm-3.5
- https://github.com/securesystemslab/multicompiler
- https://github.com/securesystemslab/multicompiler-clang
-fdiversify
- Enable diversity. This is a shortcut for -Xclang -nop-insertion
and -mllvm -sched-randomize
.
-frandom-seed=S
- Set the random seed to some 64-bit unsigned int S. Set this
whenever using diversity options.
-mllvm -fla
- Control flow flattening pass
-mllvm -sub
- Instruction substitution pass
-mllvm -bcf
- Bogus control flow pass
-mllvm -xse
- XOR string encryption pass (CRASHES COMPILER, DO NOT USE!)
-Xclang -nop-insertion
- Enable the NOP insertion pass.
-mllvm -nop-insertion-percentage=X
- Insert NOPs before X% of instructions (default 50%).
-mllvm -max-nops-per-instruction=X
- Insert at most X NOPs each time (default 1).
-mllvm -sched-randomize
- Enable schedule randomization.
-mllvm -sched-randomize-percentage=X
- Randomize X% of the instruction schedule (default 50%).