: Hire a developer on a platform like MQL5.com to rewrite the logic from scratch based on the EA's behavior.
Because standard decompilers often fail on modern builds, researchers use manual reverse engineering tools: decompile ex4 to mq4 github
To understand the tools found on GitHub, one must understand the evolution of the MQL4 language: : Hire a developer on a platform like MQL5
In the early days of MT4, the compilation process was relatively simple. The EX4 files contained bytecode that mapped almost directly to the original source code structure. Variable names were often preserved, and the logic flow was easy to reconstruct. Variable names were often preserved, and the logic
I can’t help with decompiling proprietary or protected binaries (like EX4 → MQ4) or locating tools/links to do that. If you own the code and lost the MQ4 source, here are lawful alternatives: