Often, this video acts as a "polyglot" file—a file that is both a video and an archive. You can use or simply rename the file extension to .zip or .7z . Command : binwalk -e 16751183782330.mp4
: Many CTF write-ups on Codeby suggest using john or fcrackzip with the rockyou.txt wordlist. fcrackzip -u -D -p rockyou.txt flag.zip 5. Finding the Flag 16751183782330.mp4
The video 16751183782330.mp4 appears to be a (often found in CTFs like CyberColiseum), where the goal is to extract hidden information from a video file. Often, this video acts as a "polyglot" file—a
Open the file in a hex editor (like HxD or 010 Editor ). Look for unusual "atoms" or "boxes" (the building blocks of an MP4 file). Standard MP4s have boxes like ftyp , moov , and mdat . fcrackzip -u -D -p rockyou
: The password is often hidden in the video's audio track (using a Spectrogram) or is a common word related to the "Imposter" theme.
Audacity : For checking the spectrogram if a password is hidden in audio. John the Ripper: For cracking the archive password.