You can often download these to see if they can identify the password, but the full password may be hidden until you register.
Even if you find a cracked code that doesn't trigger your antivirus, the software often suffers from severe instability: passfab free registration code
While a "free registration code" is rarely provided officially, the free trial versions offer specific limited features: You can often download these to see if
: The trial version of PassFab 4WinKey permits users to burn a Windows bootable disk for free, though actual password removal requires a license. passfab free registration code