No reliable public EX4 → MQ4 decompiler from 2021 works on modern MT4 builds. If you still want to try, you must:
Keep in mind that decompiling is unless you own the original source code or have permission from the author. ex4 to mq4 decompiler github 2021
Even with successful partial recovery, original comments, variable names, and formatting are permanently lost during the compilation process. Community Verdict No reliable public EX4 → MQ4 decompiler from
Future research and development should focus on: This shows the assembly-like logic, which you can
: Repositories like FX31337/ex4_to_mq4_cli were common in 2021 but are not actual decompilers . They act as command-line interfaces for an old, proprietary tool from purebeam.biz that was designed for MT4 versions pre-dating the 2014 "Build 600" update.
Advanced users can open the EX4 in a hex editor or use a disassembler like (not a decompiler). This shows the assembly-like logic, which you can manually translate to MQ4. This is time-consuming but legal for educational use in some jurisdictions.