Digital Traces
August 26, 2025 Towfiqur Rahman
Even the smallest traces on a network never truly disappear. Analyze this network capture carefully. Maybe someone leaked something inside plain traffic.Flag Format: BUBT-CTF{secret} Hint: Use Wireshark and check the streams. Try following TCP or DNS streams. Enter your flag Please enter the correct flag below. Make sure there are no extra spaces! Check my […]
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Evidence in Metadata
August 26, 2025 Towfiqur Rahman
Sometimes, the truth is not visible in the picture itself, but hidden in the evidence behind it. Inspect this image carefully. Look deeper than the surface. Hint : Metadata never lies. Use tools like `exiftool` or `identify -verbose`. Enter your flag Please enter the correct flag below. Make sure there are no extra spaces! Check […]
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Hidden in Colors
August 26, 2025 Towfiqur Rahman
Our security team found this mysterious image during an investigation. At first glance, it looks like just a plain white & blue background. But we suspect that something important is hidden within the pixels. Recover it.Flag format: BUBT-CTF{***} General Hints:- Lossless images can hide bits without visual change.- Try inspecting the **least significant bits** (LSBs) […]