EX4 files are compiled programs for MetaTrader, a platform for online trading of forex, stocks and futures. MQ4 files are the source code of these programs, written in MetaQuotes Language 4 (MQL4). Decompiling an EX4 file means recovering the original source code from the compiled file.
Why would someone want to decompile an EX4 file There are several possible reasons:
To learn from the code of an expert advisor (EA), indicator or script that is distributed without source code.
To modify or improve the code of an existing program that is no longer supported by its developer.
To remove any limitations or restrictions that are imposed by the program, such as expiration date, account number, broker name, etc.
To fix any bugs or errors that are found in the program.
How can someone decompile an EX4 file There are two main methods:
Using a decompiler software that can convert EX4 files into MQ4 files automatically. These software are usually paid and may not work for all versions of EX4 files. Some examples of these software are EX4-TO-MQ4 Decompiler[^2^], EX4-TO-MQ4 V4.0.392.1[^2^], etc.
Using a reverse engineering tool that can analyze the binary code of EX4 files and produce some source code that might run using MT4. These tools are usually free but require advanced knowledge of cryptography and binary decompilation. Some examples of these tools are IDA Pro[^1^], NSA Ghidra[^1^], etc.
What are the challenges and risks of decompiling an EX4 file There are several possible challenges and risks:
The decompiled code may not be identical to the original source code, as some information may be lost or changed during the compilation process.
The decompiled code may be obfuscated or encrypted by the developer to prevent decompilation or modification. This means that the code may be hard to read or understand, or even impossible to run or compile.
The decompilation process may violate the intellectual property rights of the developer, as most EAs for MetaTrader are distributed without source code. According to MetaTrader developers, this is not legal in most countries[^1^].
The decompiled code may contain malicious code that can harm your computer or your trading account. This may be done by the developer to deter decompilation or modification, or by a third party who distributes a modified version of the program.
In conclusion, decompiling an EX4 file to get the source code is possible in principle, but it is not easy, safe or ethical. It is recommended to contact the developer first and ask for the source code or permission to decompile. If that is not possible, it is better to look for alternative programs that have similar features and functions, or create your own using MQL4.MQL4 Tutorial
If you want to learn how to create your own EAs, indicators and scripts for MetaTrader 4, you need to learn MQL4, the programming language of MetaTrader 4. MQL4 stands for MetaQuotes Language 4, and it is a built-in language that allows you to implement your trading strategies and automate your trading operations.
MQL4 is a high-level object-oriented language that is based on the concepts of the popular C++ programming language. However, MQL4 is simpler and more specialized for trading purposes. You don't need to have any prior programming experience to start learning MQL4, but some basic knowledge of logic and mathematics will help you a lot.
There are many benefits of learning MQL4 and creating your own programs for MetaTrader 4. Some of them are:
You can test your trading ideas and optimize your parameters using historical data and the built-in Strategy Tester.
You can automate your trading decisions and execute them faster and more accurately than manual trading.
You can create custom indicators and graphical objects to enhance your technical analysis and visualization of market data.
You can create scripts to perform single or repetitive tasks, such as opening or closing orders, modifying stop losses or take profits, sending alerts or notifications, etc.
You can share your programs with other traders or sell them on the Market service within the MetaTrader 4 platform.
To start learning MQL4, you need to have MetaTrader 4 installed on your computer. You can download it for free from the official website of MetaQuotes Software Corp. or from any broker that supports MetaTrader 4. Once you have installed MetaTrader 4, you can access the built-in editor called MetaEditor, where you can write, compile and debug your MQL4 code.
There are many resources available online to help you learn MQL4. Some of them are:
The official MQL4 Book[^1^], which covers all the basics of MQL4 syntax, data types, operators, functions, program types, etc. It also provides many examples and exercises to practice your skills.
The official MQL4 Reference[^1^], which contains detailed information about all the predefined functions, constants, variables and classes that you can use in your MQL4 programs. It also provides a list of errors and warnings that may occur during compilation or execution of your code.
The official MQL4 Forum[^1^], where you can ask questions, share your ideas, find solutions and communicate with other MQL4 developers. You can also find many useful articles, tutorials and code snippets posted by experienced users.
The online courses on Udemy[^3^], such as MQL4 In Depth[^3^], which teach you how to create EAs, indicators and scripts from scratch using MQL4. You can also learn about advanced topics such as event handling, object-oriented programming, graphical user interface design, etc.
Learning MQL4 can be fun and rewarding if you have a passion for trading and programming. By mastering MQL4, you can unleash your creativity and turn your trading ideas into reality. You can also improve your trading performance and profitability by using automated trading systems that suit your style and preferences. ec8f644aee