Start with basic commands to identify the file type. file whangsaff.png : Confirms it is a valid PNG image.
Mention any dead ends or rabbit holes (e.g., "Initially tried LSB analysis, but the data appeared random"). 4. Flag Extraction Provide the final flag format found. Flag: CTF{...} Recommended Tools for "whangsaff.png" whangsaff.png
Brief summary of the task provided by the challenge author. Points: (Optional) Point value assigned. 2. Initial Reconnaissance Start with basic commands to identify the file type
Specifically designed to detect hidden data in PNG and BMP files. "Initially tried LSB analysis
If you are currently stuck, try these common forensics/stego tools found in many CTF Writeups :