: Use rar2john GF7.rar > hash.txt to pull the encrypted password hash [2].

: Confirms the file type and version (usually RAR5 or RAR4).

The objective is to extract the contents of GF7.rar to find a hidden flag or specific piece of evidence. The file is often protected by a password that isn't provided directly [2, 4].

: If you can't even see the filenames inside the RAR, the headers are encrypted. You must provide the password just to list the files [3].

: Check if the password is a string found in the challenge description or the filename itself [1].