However, in about 85% of cases it is possible. However, not every file can be decompiled. Those guys have been working since 2005 and have huge experience in restoring source code of their EX4 and EX5 files. The most famous such team is EX4toMQ4.pro. Nowadays, the decompiling of EX4 files is done manually by teams of skilled professionals. So what to do? How should the EX4 files be decompiled today? When you pay money to such people, at best you will get an obsolete decompiler that can be downloaded free of charge, and at worst you will get nothing.

Moreover, its creation is impossible in principle. There is no decompiler for MT4 build 600 or newer.

It's important to understand that all the 100% offers to buy a decompiler are scams. However, you can still find offers to buy such a decompiler and use it for modern EX4 files compiled by the actual MetaEditor builds. You can download this software absolutely for free. You can easily find a link to download the decompiler version 4.0.427.4 on the Internet. For later files, you should use an online decompilation service. Thus, you can use a decompiler to reconstruct the source code of almost any EX4 file created in 2013 and earlier. From now on the source code is compiled directly into binary code, just like C++ compiler generates. In February 2014 build 600 of MetaTrader 4 trading terminal was released, where the concept of executable code generation was radically changed. This is exactly what everyone knows the decompiler does. Programs compiled in this way can be unambiguously mapped to source code with a few exceptions (variable and function names, comments).

This is similar to the way the Java Virtual Machine or the modern. In MetaTrader 4 up to build 509, the source code in MQL4 was compiled into so-called byte code. The latest version is number 4.0.427.4 and was introduced in January 2014. The decomulator for EX4 files was created by the team in 2009. In other words, this program is designed to restore the source code of expert advisors (EA), technical indicators and scripts in the MetaTrader 4 trading terminal environment. The decompiler is a tool to convert EX4 files into MQ4 format.

Converter arquivo ex4 para mq4