Art Gallery Description This was a Forensics challenge from the DaVinciCTF, where my team irNoobs managed to finish on the 4th place. This challenge particularly was extremely interesting as it closely mirrored an investigation of a ransomware attack, from the initial infection vector to the encryption routine. Challenge Description: Alert! A famous online art gallery […]
Category Archives: Forensics
Excel macro
сука блять TL;DR Analyze a malicious Excel file and extract its payload Description I found some Russian malware online and I have no idea what it’s doing D: Author: xenocidewiki The challenge provides us with a Finances2020covid.xlsm file Initial analysis First of all, when you download this file, Microsoft Defender warns you that it is […]
PDF analysis
PDF is broken and so is this file TL;DR Analyze broken pdf file and extract several hints that lead to the solution Description This PDF contains the flag, but you’ll probably need to fix it first to figure out how it’s embedded. Fortunately, the file contains everything you need to render it. Follow the clues […]
Bootloader
The Proclamation TL;DR Debug and fix a bootloader that decrypts a flag Description A mysterious file appeared on a deep dark web forum. Can you figure out what we can’t see right now? NOTE: Flags will be easily identifiable by following the format CS{some_secret_flag_text}. They must be submitted in full, including the CS{ and } […]