Key facts
- REA, an open-source toolkit, connects AI coding agents to reverse-engineering tools like Ghidra.
- REA's GitHub stars grew from under 10,000 on October 6 to over 100,000 by October 12.
- Claude Opus 5.5 has been used to create AI-decompiled game mashups and ports.
- Developer Brandon Thomas created ArtCraft, free Rust-built alternatives to Adobe programs.
- ArtCraft is described as a clean-room rebuild, not using Adobe's original code.
- REA works on desktop apps, Android apps, and websites by deconstructing machine code.
An open-source toolkit called REA (Reverse Engineer Anything) has rapidly gained popularity on GitHub, allowing AI agents to deconstruct software. The tool has seen its GitHub stars surge from under 10,000 on October 6 to over 100,000 by October 12. REA works by connecting AI coding assistants like Claude Opus 5.5 and OpenAI's Codex to professional reverse-engineering tools such as Ghidra, the NSA's public suite.
This technology enables users to analyze machine code and understand how software features work, extending to desktop applications, Android apps, and websites. The bridge between AI models and these tools is MCP (Model Context Protocol), a standard created by Anthropic. While REA's developer notes it does not recover original source code or automatically clone applications, its approach is considered legally permissible.
The capabilities of REA have led to various creative applications, including game modifications like Spider-Man in Batman: Arkham City and Escape from Tarkov elements in Skyrim. Fans have also used similar AI techniques to port games like Fable 2 to PC and run GTA V on iPhones. Developer Brandon Thomas utilized Claude Opus 5.5 to create ArtCraft, a suite of free, open-source alternatives to Adobe's Photoshop, Illustrator, Premiere, and Lightroom, built using a clean-room rebuild method.
However, this trend also raises concerns about software piracy and security. Activision has removed footage of an AI-decompiled Call of Duty: Modern Warfare 2, and Bethesda issued a cease-and-desist letter for an AI-made Fallout browser game. Thomas has adjusted his timeline for ArtCraft's feature parity with Adobe's offerings, now estimating it will take months.