EFIPW

EFIPW is a fantastic open-source software that is based on a command line system. With EFIPW, users can decode and modify firmware passwords that are saved on EFI-based Apple systems in nvram. This program is helpful for lab supervisors who need to manage numerous machines and pen testers who want to perform ethical hacking and penetration testing.

Moreover, EFIPW can even decode existing passwords for use in pen test audits. The tool was developed with inspiration from the OPFW tool. One thing to note is that EFIPW requires root permissions to function.

Using EFIPW is very simple. If you're an unprivileged user, you can reveal the current firmware password by typing 'sudo ./EFIPW -d'. Similarly, if you want to set a new password, you can use the command 'sudo ./EFIPW -p "newpassword" (-m "newmode")'. EFIPW offers a range of valid modes for new passwords, including none, command (default), and full.

Finally, EFIPW has been tested on Core Duo (1st gen) Macbook Pro 15" and Core 2 Duo Macbook Pro 15". Overall, EFIPW is an amazing software that's easy to use and perfect for those who want to manage their machines and perform pen tests.