O-MVLL

O-MVLL (in reference to O-LLVM) is a LLVM-based obfuscator driven by Python and the LLVM pass manager. It can be run as follows:

clang++ -fpass-plugin=libOMVLL.dylib main.cpp -o main

import omvll

class MyConfig(omvll.ObfuscationConfig):
    def __init__(self):
        super().__init__()

    def flatten_cfg(self, mod: omvll.Module, func: omvll.Function):
        if func.name == "check_password":
            return True
        return False

O-MVLL can be used with the Android NDK and an iOS toolchain. It currently supports AArch64 and ARM architectures.

For more details, please check out the documentation at obfuscator.re/omvll.

Download

• Official releases
• Experimental builds

Contact

Feel free to reach out at ping@obfuscator.re for any doubt, issue, bug you may encounter.

Maintainers

• Build38: The Next-Gen Mobile App Security Platform

Author

• Romain Thomas: @rh0main (me@romainthomas.fr)

Credits

• LLVM
• obfuscator-llvm
• obfuscator-llvm from eShard
• Hikari
• DragonFFI

License

O-MVLL is released under the same License as LLVM: Apache License, Version 2.0.

This project is partly funded by the EU and the European Cybersecurity Competence Center.