A mp3 file is given to you and you have to capture the flag hidden within this mp3 file. This challenge was to test your skills in decoding audio files.
- Listen to the mp3 file carefully and find out the flaw.
- Use audio visualizer tools to find out the solution.
- Audacity software might come in handy.
- When you listen to the audio file you will notice a slight disturbance from 0:20s to 0:30s
- Open this audio file in the audacity tool which will help you to visualize the waveforms.
- Select the spectogram visualizing form and voila you've captured the flag.