Reverse-engineering tool REA tops 110k GitHub stars in six days

On October 12, 2026, Chinese developer outlets reported on REA, an AI reverse-engineering project whose full name is Reverse Engineer Anything. According to Geek Park, the project's homepage states that if a user sees a feature in an app they want to add to their own product, they can have an agent investigate it; even without source code, the agent can inspect the app, explain how the feature works, show evidence, and implement something similar for the user's project. Geek Park reported that REA's star count rose from under 10,000 on October 6 to more than 110,000 on October 12, a gain of roughly 100,000 stars in six days, or about 17,000 per day.

Geek Park also noted that in early October, a group of older games suddenly became playable directly in the browser, including Halo: Combat Evolved, Half-Life, Diablo, and the larger titles GTA5 and Call of Duty: Modern Warfare 2. One widely shared write-up came from reverse engineer Maurice Heumann, who ran more than a dozen Claude Code and Codex agents in parallel to recover 99% of the functions in a shooter game as C++ source code, with 83% of the compiled output matching the original program byte for byte. The report said he used Hex-Rays, and cautioned readers against getting overly excited about such capabilities.

The same day, Juejin published a hands-on tutorial on equipping an AI coding assistant with a professional reverse-engineering toolkit so it can actually take apart software on a computer rather than guess. The tutorial is based on an open-source GitHub project with 110,000 stars and walks through the evidence chain to explain how the functionality is implemented. Neither report offered further technical details or any follow-up plans for the project.