While there is no single "proper" official feature release for an EX4 to MQ4 decompiler on GitHub from 2021, several open-source projects and historical tools are frequently referenced in developer communities. Modern EX4 files (MetaTrader 4 build 600+) are highly resistant to full decompilation because they generate binary code rather than simple byte code.
By 2021, the reality was harsh. Here is why:
: Utilized for binary decompilation at the processor level, though the resulting code is often obfuscated and extremely difficult to read. ex4 to mq4 decompiler github 2021
The following GitHub repositories were identified as relevant to EX4 to MQ4 decompilation in 2021:
If you're looking for a reliable way to decompile EX4 files, I recommend: While there is no single "proper" official feature
For files that standard decompilers cannot handle, developers often turn to professional-grade tools:
Politely explain you lost the source. Offer proof of purchase. Many developers on MQL5.com will re-send the MQ4 for a nominal $10–$30 fee. Here is why: : Utilized for binary decompilation
: The success of decompilation depends heavily on the complexity of the EX4 file and how well it was compiled. Simple scripts might decompile with a high degree of accuracy, while more complex Expert Advisors or indicators may not fare as well.