Bach_guitar.rar | 2027 |

Typically looks like CTF{...} or FLAG{...} .

Data hidden after the "End of File" marker (EOF), viewable in a Hex editor.

Checking the of the .rar file itself (using exiftool ). Bach_Guitar.rar

Check for hidden data using steghide (common password: bach ).

Brute-forcing if the hint suggests a simple word (like "bach" or "guitar"). Typically looks like CTF{

Use strings to look for readable text at the end of the file. Inspect the LSB (Least Significant Bit) using zsteg . Open the file in Audacity .

Looking for a in the archive (using 7z l -slt Bach_Guitar.rar ). Bach_Guitar.rar

Switch the view to . The flag is often written visually in the higher frequencies of the audio track.