Converting compiled EX4 files back into readable MQ4 source code is technically difficult.
There are several tools and software solutions available that claim to decompile .ex4 files back to .mq4. The effectiveness of these tools can vary: ex4 to mq4 decompiler 50 1 exe link
Decompiling third-party software often violates the End User License Agreement (EULA) and can be considered a breach of intellectual property rights. It is generally only considered ethical if you are the original owner of the code and have lost your source files. Ex4 To Mq4 Decompiler 4.0.432 | Updated - Google Groups Converting compiled EX4 files back into readable MQ4