List your toolkit, such as ExifTool , FFmpeg , StegSolve , Sonic Visualizer , or Strings . 2. Initial Analysis Describe your first steps after receiving the file:
Did you run exiftool 3137.mp4 ? Often, flags or hints are hidden in the "Comment" or "Artist" tags. 3137.mp4
This is the core of your write-up. Explain the "Aha!" moment: List your toolkit, such as ExifTool , FFmpeg
Did you watch the video for flashing frames, QR codes, or Morse code? 3. Deep Dive & Exploitation List your toolkit
Use file 3137.mp4 to confirm it is actually an MP4 and not a renamed archive or polyglot file.
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.