There are limited scenarios where decompiling an EX4 file could be considered legitimate:
Platforms like MQL5.com freelance, Upwork, or Fiverr host verified programmers. You can explain the behavior of your EX4 tool, and they can code a brand new, clean MQ4 clone from scratch based on its visible trading behavior. ex4 to mq4 decompiler50 1 exe top
If you purchased a tool, ask the creator for the source code or a modified version. There are limited scenarios where decompiling an EX4
MetaTrader 4 uses two primary file formats for its automated trading scripts, Expert Advisors (EAs), and indicators: MetaTrader 4 uses two primary file formats for
Users who download EX4 decompilers from unofficial sources expose themselves to significant security risks. These tools are frequently distributed through file‑sharing websites, blogs, and forum posts with little to no quality control or security auditing.
Some malware specifically targets MetaTrader installations, altering your EA settings or copying your trades to unauthorized accounts. Legitimately Recovering or Modifying an EX4 File