The EX4 to MQ4 Decompiler 5.0.1 is a software application designed to take EX4 files and convert them back into MQ4 source code. This decompiler tool is significant because it potentially allows users to:
MetaQuotes, the company behind MetaTrader 4, takes a against decompilation. On their official MQL5 forums, moderators have explicitly stated: "Decompiled code is stolen and illegal code and such practices are not tolerated in any way by MetaQuotes, this site, this forum nor by its community, especially the developers". ex4 to mq4 decompiler 50 1 exe link