net/threads/pishem-ctf-writeup-pravil-no-zachem-eto-nuzhno-i-kak-pomogayet-razvitiyu.92117/">Codeby ?
Use file 3137.mp4 to confirm it is actually an MP4 and not a renamed archive or polyglot file. 3137.mp4
If the video looked normal, did you check the audio track? Mention if you used Audacity or Sonic Visualizer to look at the Spectrogram for hidden text. 3137.mp4
Did you find the flag by running strings 3137.mp4 | grep "CTF{" ? 4. Final Flag Flag: FLAGexample_flag_123 3137.mp4
Briefly state what the goal was (e.g., "Find the hidden flag within the video file").
A quick summary of the trick (e.g., "The flag was hidden in the LSB of the audio channel").
This is the core of your write-up. Explain the "Aha!" moment: