You can legally download or stream G.I. Joe: Retaliation with Hindi audio through several official platforms. Where to Watch & Download Legally
Use of Torrents (Caution Advised): If the movie isn't available through legal means, some might turn to torrent sites. Be cautious: These sites can expose your device to malware and viruses.
That being said, here are some general tips on how to find and download movies legally:
Conclusion
Guide: Downloading G.I. Joe Retaliation in MP4 Dubbed in Hindi
The file wasn’t an MP4. It was a 700MB executable titled Real_Snake_Eyes_Action.exe.