If you understand how the indicator or EA behaves, you can hire an MQL4 developer (via platforms like MQL5.com freelance) to recreate it from scratch.
While GitHub is a treasure trove for traders, a "magic button" to decompile modern EX4 to MQ4 remains elusive. Most available tools are either outdated or requires expert-level knowledge to operate. For most traders, the best path is to contact the original developer for the source code or hire a programmer to replicate the logic through observation.
Note which technical indicators (like Moving Averages or RSI) align with the trades.
— Never redistribute decompiled code from others‘ work.
A tool that attempts to analyze EX4 files and generate pseudocode in MQL4, Python, or C. It uses disassembly engines like Capstone for pattern recognition but notes that output still requires manual review.
Most trading logic (like Moving Average crossovers, Grid trading, or Martingale strategies) is not unique. Instead of trying to crack a paid bot, search GitHub for terms like "MT4 grid EA open source" or "MQL4 trading strategy" . You will likely find clean, safe, and well-commented source code that does exactly what you need. Hire a Developer to Recreate the Logic
Original local variables ( int i , double price ) become stack offsets. The decompiler guesses which offsets belong together – but names are lost forever.
Guide you to on the MQL5 Community to hire a programmer. Let me know how you'd like to proceed .* Ex4 to mq4 | PDF - Slideshare