Check for comments in the RAR header using exiftool . 4. Flag/Goal Discovery If this is part of a CTF: Search for a string matching the format FLAG{...} .
If the archive is locked, a common strategy is to extract the hash and use a wordlist. Use rar2john 45364545444.rar > hash.txt .
Running 7z l 45364545444.rar or unrar l reveals if the headers or the files themselves are encrypted. If the filename is visible but the content is not, only the data is encrypted. 2. Password Recovery (Cracking)
Look for .txt or .png files with embedded data (steganography).
Using file 45364545444.rar confirms it is a RAR archive.