Look for .txt or .png files with embedded data (steganography).
Run John the Ripper or Hashcat: john --wordlist=rockyou.txt hash.txt 45364545444 rar
If a binary is found, use strings to look for hardcoded keys. 7-Zip / Unrar: Archive management. John the Ripper / Hashcat: Password recovery. Exiftool: Metadata analysis. Binwalk: Checking for appended data or nested files. Look for
Using file 45364545444.rar confirms it is a RAR archive. 45364545444 rar
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{...} .