Encrypted iTunes backup impossible to unlock

[vagantis]

Brute-forcing iTunes backup, when you have no idea how the password may look, would require tremendous amount of resources (hardware, time, electrical energy and luck). Read about dictionary attacks using hashcat then aquire password hash (https://github.com/philsmd/itunes_backup2hashcat) and some dictionaries as rockyou.txt. Run it and hope it cracks.