Developers often "scramble" their code so that even if it's decompiled, the variables look like var1, var2, var3 , making it impossible to understand the logic.
Converting EX4 to MQ4 for free is practically impossible for any file compiled with modern versions of MetaTrader 4 (build 600 and higher) How To Convert Ex4 To Mq4 Free
to decompile the specific EX4 file in question. When in doubt, consult an attorney knowledgeable about intellectual property law in your jurisdiction. Developers often "scramble" their code so that even
Converting an (executable) file back into its MQ4 (source code) format is technically known as decompiling . While many users seek this to recover lost source code or modify an existing Expert Advisor (EA), it is a complex process with significant technical and legal limitations. The Current State of EX4 to MQ4 Conversion Converting an (executable) file back into its MQ4
If you manage to find a free tool, the resulting MQ4 file is often a mess. This is due to:
Sometimes, traders "lose" their MQ4 file but still have the EX4 running in their terminal. If you originally wrote the code and just lost the file, check your computer's or the "MQL4/Indicators" folder in the MT4 Data Folder. Go to File > Open Data Folder . Navigate to MQL4 > Indicators (or Experts ).