Decompilation of EX4 to MQ4: Unpacking the Mystery of FOREX Trading

EX4 to MQ4 decompilation process

FOREX trading has become one of the most popular and lucrative forms of investment in recent times. With the growth of the internet and the availability of powerful trading platforms, it's now possible for people to invest in the currency market from the comfort of their own homes. MetaTrader 4 (MT4) is one such platform that has emerged as a popular choice among FOREX traders.

One of the key features of MT4 is the ability to create custom indicators, scripts, and expert advisors (EAs). These EAs, written in the MQL4 programming language, can automate trading strategies and provide valuable insights to traders. However, the compiled version of these EAs, in the EX4 format, is difficult to read or modify as the source code is encrypted.

This is where decompilation comes into the picture. Decompilation is the process of converting a compiled executable file back into its original source code. In the case of EX4 files, decompilation refers to the process of converting an EX4 file back into its original MQ4 source code.

Why Decompile an EX4 File?

There are several reasons why traders may want to decompile an EX4 file. One of the most common reasons is to modify the source code to add custom features or make changes to the existing EA. This is especially useful for traders who have purchased an EA from a third-party vendor but want to make changes to suit their specific needs.

Another reason for decompiling an EX4 file is to analyze the trading logic behind the EA. This can provide traders with valuable insights into how the EA works and how they can improve their own trading strategies.

Decompilation also enables traders to check for malicious code in the EA. Expert Advisors can contain hidden code that can compromise the security of a trader's account or steal sensitive information. By decompiling the EX4 file, traders can check for such malicious code and take appropriate measures to protect their accounts.

The Process of Decompilation

The process of decompiling an EX4 file to its original MQ4 source code involves using an online decompiler. A decompiler is a SaaS service that converts the compiled EX4 file back into the original MQ4 source code.

There are several online decompilation services, but unfortunately the vast majority of them are fraudulent. They will simply take your money without providing anything. However, there are also reliable and time-tested services. The most trusted of these is, which has been working in the field of software decompilation since 2005.

The decompilation process is relatively straightforward and typically involves the following steps:

  1. Fill in the order form and attach the EX4 file
  2. Wait for a reply from a specialist about decompilation possibilities
  3. Confirm your acceptance of the terms of order
  4. Receive the completed MQ4 file and verify that it is identical to the original
  5. Pay for the work at the previously agreed price

The service does not charge its customers in advance. One of the few exceptions is when a client contacts the service for the first time. Payment for the second and all future orders is made upon completion of the work.


Decompilation is a powerful tool for FOREX traders who want to understand the trading logic behind EAs, modify existing EAs, or check for malicious code. By decompiling EX4 files to their original MQ4 source code, traders can gain a deeper understanding of the EAs they are using and make informed decisions about their trading strategies.

However, it's important to use decompilers with caution and to understand the potential risks involved. In fact, most online decompilation services are fraudulent. Only trusted and reliable services such as should be used.

EX4 decompilation may be illegal

In addition, it's important to note that decompilation of EX4 files may be illegal in some jurisdictions. Before decompiling an EX4 file, it's important to research the laws in your country and make sure that you are not breaking any laws by doing so.

In conclusion, decompilation of EX4 files to MQ4 source code can provide valuable insights and opportunities for forex traders. However, it's important to use decompilers with caution and to understand the potential risks involved. Always make sure to follow the laws and regulations in your country, and only decompile EAs that you have the legal right to access.