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An EX4 file contains:
Stars: ~180
Language: Python
Last Update: 2023
This Python-based tool is beloved by Linux users who cannot run Windows GUI apps. It runs from the command line and outputs a .mq4 file alongside a .log of decompilation issues. ex4 decompiler github
Pros:
Cons:
GitHub Link: github.com/kronver/mql4-decompiler
MQL4 developers often spend weeks or months perfecting an EA. Decompilation destroys their business model. In response, modern developers use: An EX4 file contains: Stars: ~180 Language: Python
This arms race means that public GitHub decompilers often fail on any EX4 compiled with build > 1350 (MetaQuotes added heavy anti-reverse engineering in 2021).
The ex4 decompiler github ecosystem is a double-edged sword. On one hand, repositories like Ex4ToMq4 and mql4-decompiler can genuinely recover lost trading strategies from damaged hard drives. On the other hand, they are frequently abused to steal intellectual property, distribute malware, and violate MetaQuotes' terms. GitHub Link: github
Status: Archived, but forks exist.
This tool leverages the fact that older EX4 versions (builds 600–700) had a relatively simple compilation pattern. It is famous for faster processing but requires Visual Studio to compile.