Are you looking to a specific strategy, or are you trying to recover a lost project of your own?
The official MetaQuotes freelance section is a great place to find experts who can help you rebuild or modify indicators legally. Final Verdict
While the allure of a free is strong, the reality is that such a tool—if it works—is likely a security risk. For modern MT4 builds, your time is better spent rebuilding the logic or contacting the original author than hunting for a "magic" software fix.
Turning a modern EX4 back into a perfect MQ4 file with original variable names and comments. This is currently considered impossible by the general public due to the way MetaQuotes handles compilation.
If you have the EX4 and want to replicate its behavior, hire a programmer to "black-box" the logic. They can watch how the EA trades and rewrite the code from scratch. This ensures you have a clean, modern MQ4 file.
The quest for an is one of the most persistent searches in the MetaTrader community. Whether you’ve lost the source code to an old Expert Advisor (EA) or you're trying to understand the logic behind a "black box" indicator, the need to reverse-engineer these files is common.
Reverse-engineering commercial software often violates the Terms of Service (ToS) of the developer and the MQL5 Market. What Should You Do Instead?
These often contain a README.md file with a link to an external website or a password-protected .zip file. Exercise extreme caution. These are frequently used to distribute malware or "stealers" designed to grab your MT4 login credentials or crypto keys.
If you purchased the EA, most developers will provide the source code for a fee or help you with updates.
If you find yourself needing to recover a strategy, try these safer alternatives: