BrunnerCTF 2026 : Half Baked Writeup
Summary half_baked.py defines a BrunsvigerCake model with six nn.Linear layers, each with real pretrained weights and biases already assigned, but forward() just returns the input untouched - none of
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BrunnerCTF 2026 : Magic or Not Writeup
Summary 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
BrunnerCTF 2026 : The Three Ways Writeup
Summary Two connected challenges built around the same Gitea/Drone/rollout-agent environment. The first stage (Flow) gets code execution on the Drone CI runner. The second stage (Feedback / Continuous
BrunnerCTF 2026 : Activating Neurons Writeup
Summary The challenge ships a single file, activating_neurons.py, defining a small nn.Module called BrunsvigerNet. The model has two linear layers, but forward() only runs the input through the first
BrunnerCTF : Git Gud Writeup (2026)
Summary A Flask web app accepts a .tar upload of a "git repository" and runs git status and git log against it to display commit stats. Because the tar is extracted with no validation and real git com
BrunnerCTF : WordPressed to Root Writeup
Overview The box ships a mostly-stock WordPress 7.0.0 install on PHP 8.2 / Apache, running on a Debian Trixie base image, packaged as a Docker/Kubernetes challenge deployment. Initial access comes thr