Instead of searching for outdated reverse-engineering tools that put your system at risk, consider safer, cleaner methods to replicate or recover trading logic: how to edit .ex4 MQL4 executable file? - Stack Overflow
The resulting MQ4 file is downloaded, allowing for modifications in the MetaEditor. Important Limitations and Technical Considerations
Instead of stealing a fish, learn to fish. The MQL4 language is not overly complex, and there are hundreds of free tutorials, guides, and documentation available on the official MQL5.com website. Learning to code empowers you to build your own trading tools exactly to your specifications. ex4 to mq4 decompiler 4 0 432 16
The is a potent tool for a specific niche—recovering code from older MetaTrader 4 builds. If you are dealing with EAs created before 2014, this tool can be incredibly useful. However, for modern MT4 builds, it is largely ineffective.
The most effective and ethical way to get a specific feature or change is to hire a professional MQL5 programmer through official channels like the service. You can describe exactly what you want the new EA or indicator to do, and a developer will build a clean, original, and fully functional tool from scratch. This guarantees high-quality, documented code and respects everyone's intellectual property. The MQL4 language is not overly complex, and
The program will analyze the file and attempt to generate a corresponding .mq4 file.
If you have lost your own source code but have the compiled .ex4 file, you might attempt to use a decompiler as a last resort for your own personal code. However, for all other cases, it's best to maintain proper version control (like using Git) to prevent data loss. If you are dealing with EAs created before
: Even when successful, decompilers often produce "obfuscated" code. This means variable names and logical structures may be replaced with generic placeholders, requiring significant manual effort to understand and modify the underlying algorithm. Safety and Security Risks
In early 2014, MetaQuotes completely overhauled the MT4 compiler with the release of . They aligned the MQL4 language architecture with the more advanced, strict object-oriented MQL5 language.
void TrailStop(int trailPips) double trailLevel = Bid - trailPips * Point; for(int i=0; i<OrdersTotal(); i++) if(OrderSelect(i, SELECT_BY_POS, MODE_TRADES)) if(OrderSymbol() == Symbol() && OrderMagicNumber() == Magic) if(trailLevel > OrderStopLoss()) OrderModify(OrderTicket(), OrderOpenPrice(), trailLevel, OrderTakeProfit(), 0, clrNONE);