YPYogeshwar Peelainexploitnotes.hashnode.dev·4h ago · 6 min readBrunnerCTF 2026 : Magic or Not WriteupSummary The challenge provides four files (Brunner1.jpg, Brunner2.gif, Brunner3.png, Brunner4.bmp) that all report as generic data under file - none of them start with the magic bytes their extension 00
