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Labs / Sonic Cipher

  • Daily Challenge
  • Released 15 Jul 2025

Sonic Cipher

Start the machine, hack the system, and find the hidden flags to complete this challenge and earn points!

1
Flags
1
Points
Daily Challenge
Solution Available
Pro Exclusive
Start Lab Environment
~1-2 min setup
AWS dedicated
Private instance
Industry standard
Daily Challenge

Sonic Cipher - Challenge Description

Challenge Overview

A WAV audio file has been provided. Your task is to extract the hidden flag, which is not audible in the sound. Use your steganography and forensic skills to analyze the audio file and uncover the flag in UUID format.

Learning Objectives

  • Learn to analyze audio file structure
  • Practice extracting hidden data from WAV files
  • Understand least significant bit (LSB) steganography in audio
  • Develop forensic analysis skills

Challenge Details

Download the WAV file and use your favorite tools to analyze it. The flag is hidden somewhere in the audio's binary data, not in the audible content. The flag format is a UUID.