Use a trade logger to record every entry and exit. By analyzing the data, you can often reverse-engineer the logic (e.g., "It always enters when RSI crosses 30 and Price is below the 200 EMA").
Decompiling a commercial EA to bypass licensing restrictions or to resell the strategy is a direct violation of copyright laws. Ex4 To Mq4 Decompiler Github
Search results pointing to older and now-defunct decompilers highlight this issue, as they are frequently reported to have missing core files. New users often mistakenly clone these repositories expecting a ready-to-use decompiler, only to find they lack the essential component needed to do anything. The widespread discussion around "ex4 to mq4 4 0 509 5 freeware exe" or tools in Chinese resources indicates that standalone decompiler executables exist, but they are not the same as the wrapper projects on GitHub. Use a trade logger to record every entry and exit
This is the raw, human-readable source code. Developers write and edit strategies in this format using the MetaEditor. Search results pointing to older and now-defunct decompilers
If you lost your source code but still have the .ex4 file, you can hire a professional MQL4 programmer on platforms like Upwork, Freelancer, or the official MQL5 freelance marketplace.
| Type | Reality | |------|---------| | Dead repositories | Last updated 5+ years ago | | Fake tools | Require payment or download external malware | | Partial disassemblers | Output assembly-like code, not clean MQL4 | | Educational code | For learning compiled structure (not for stealing) |
Most .exe or DLL-based decompilers claiming to convert EX4 → MQ4 are . Never run unknown decompilers on your trading PC.