Rosetta 2 is an emulation mechanism to run the x86_64 applications on Arm-based Apple Silicon with Ahead-Of-Time (AOT) and Just-In-Time (JIT) binary translation.

The technical details of Rosetta 2 are partially documented, but not rich enough. Project Champollion is a project aimed at revealing the internals of Rosetta 2. Currently, it provides:

• reverse-engineering results of Rosetta 2 (published in the GitHub pages of this repository.)
• analysis configurations for Ghidra for analyzing AOT Mach-O binaries
• parser of aot_shared_cache

Attention

This project is a work in progress and might still contain some mistakes. If you find any mistakes, please report them in the issue.

To cite this repository, please add the following BibTeX entry.

@software{prj_champ_rosetta2,
 author = {Koh M. Nakagawa},
 title = {{Project Champollion: Reverse engineering Rosetta 2}}
 url = {https://github.com/FFRI/ProjectChampollion},
 version = {0.1.0},
 year = {2021},
}

The tools of this project are distributed under Apache License version 2.0.

Koh M. Nakagawa. © FFRI Security, Inc. 2021