A: No. MetaQuotes actively opposes decompilation and has never released a decompiler.
It is also worth noting that is even more secure. MT5 uses a more advanced compilation model and stronger obfuscation. Converting an EX5 to MQL5 is practically impossible, even more so than with MT4. how to convert ex4 file to mql4
: Older EX4 files (pre-2014) are easier to decompile using legacy tools like EX4 to MQ4 Decompiler 4.0.432 . MT5 uses a more advanced compilation model and
This is the professional approach. Run the EX4 in a demo account or strategy tester. Observe its inputs, outputs, and behavior under various market conditions. Document every rule you see. Then, write a new MQL4 code that replicates that observed behavior. This is legal, educational, and often results in cleaner, better-understood code than any decompilation attempt. This is the professional approach
(We will not name specific tools here due to legal and security concerns.)