To check for "hidden" files appended to the end of the image or metadata (like GPS coordinates or comments) that might contain the flag.
While "cats 3.rar" does not correspond to a single, universally famous challenge, it most likely refers to a multi-stage or forensics task where participants must find a "flag" (a specific string of text) hidden inside an archive. Likely Challenge Workflow cats 3.rar
Running a tool like john (John the Ripper) or hashcat with a wordlist like rockyou.txt . To check for "hidden" files appended to the