Inspect metadata for comments or GPS coordinates that might serve as a flag or password.

If the extracted files (like images of a BMW M4) appear normal, the flag is likely hidden using steganographic techniques.

In some variations of this challenge, the "rar" extension is a mask:

Use StegSolve to look through different color planes (Least Significant Bit) for hidden QR codes or text. 4. Forensic "Gotchas"

Executing binwalk bmwm4custom.rar checks for appended files (like JPEGs or ZIPs) hidden within the archive structure. 2. Archive Inspection

If the archive is password-protected, the first step is checking for "RockYou" or challenge-specific hints. Tools like John the Ripper or hashcat are used to crack the password: Extract the hash: rar2john bmwm4custom.rar > hash.txt