If you must attempt a conversion, these are the primary (though limited) approaches: Open Source Tools (Advanced) Ghidra or IDA Pro
If you must attempt a conversion, here are the few methods currently discussed in the trading community: Legacy Decompilers: Older tools like EX4-TO-MQ4 Decompiler 4.0.432 how to convert ex4 to mq4 free upd
Every MetaTrader 4 build since 1355 includes anti-decompilation patches. The company has sued and shut down dozens of decompiler projects. Free tools target builds up to 1355 only. If you must attempt a conversion, these are