GitHub is a trusted platform, but that doesn't mean every script hosted there is safe. Be extremely cautious of:
If you have the EX4 and understand what the bot does, you can hire a developer on the official MQL5 forum to rewrite the logic from scratch in a new MQ4 file.
Decompiling software you didn’t write usually violates the of the product. If you are trying to recover your own lost source code, you are on safer ground. However, using a decompiler to bypass licensing on a commercial EA is illegal in many jurisdictions and unethical in the developer community. Better Alternatives ex4 decompiler github
Do you have a you're trying to recover, or
While GitHub is the world’s largest repository for code, finding a working, "push-button" EX4 to MQ4 decompiler there is trickier than it looks. Here is everything you need to know about the current state of EX4 decompilation on GitHub and the risks involved. The Reality of EX4 Decompilation GitHub is a trusted platform, but that doesn't
These are legitimate projects by reverse-engineers. They don't "decompile" the code into a readable format but help users view the file's structure or strings. They require high technical skill to use.
Before MetaQuotes updated the MT4 platform (specifically after Build 600), decompilers were common. The old EX4 files were essentially obfuscated scripts that could be easily reverted to readable MQ4 code. If you are trying to recover your own
You may find repositories containing old code from 2010–2014. These will not work on modern MT4 builds and will likely fail to open your file. The Risks of "Free" Decompilers
To avoid needing a decompiler in the future, always host your source code (.mq4) in a private GitHub repository. This ensures that even if your hard drive fails, your source code is safe.
Instead of hunting for a "magic" GitHub repository, consider these options:
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