I’m Léo, a student, hobbyist reverse engineer and developer.

Projects

Here are some projects that I have recently worked on:

• Dolphin - GameCube and Wii emulator (improving HLE, investigating and solving emulation issues)

• oead - A C++ library for common proprietary Nintendo file formats, written to get much better performance (80x over a pure Python implementation in some cases)

• Breath of the Wild reverse engineering, documentation and tools

  • ZeldaMods - Documentation on file formats and internals, obscure game mechanics, guides
  • Object Map - An open source website with advanced object inspection features that doubles as a normal game map (TS, Node.js, Python)
  • botwfstools - FUSE filesystem and tools to facilitate exploring and editing the ROM (C++)
  • EventEditor - Simple event flow editor for the game’s proprietary flowchart format (PyQt5)
  • U-King - A work-in-progress decompilation of the game executable to aid with reverse engineering and interoperability with modding tools (C++)

• Project Restoration - Majora’s Mask 3D patch that restores mechanics from the original game and fixes misc issues (C++)

• A set of small Python libraries to manipulate Nintendo proprietary file formats.

  • aamp - Parameter archive (AAMP) library and converters
  • byml-v2 - BYML/BYAML parser, writer and converter (v2+)
  • evfl - Event flow library (used by EventEditor under the hood) - including a PATRICIA trie implementation
  • sarc - SARC archive library and tool
  • rstb - Resource Size Table library and tool

  Why? One major reason is that I would like to encourage the use and the development of free, cross-platform tools. In this day and age, an alarming number of utilities are unfortunately still either closed-source, Windows-only or both.

Contact

• GitHub: leoetlino
• Email: [email protected]
• GPG key ID: 0x0DF30F9081000741

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