I recently participated in the 2026 LACTF and had a blast! The specific challenge that I liked was called pwn/tic-tac-no. Overview We are told to netcat in and get: You want the flag? You'll have to beat me first! | | ---|---|--- | | ---|---|--- | | Enter row #(1-3): Pretty self explanatory, you enter the row and column number and it puts the X in said spot and then gives the computer its turn.

Nixos on Libre Renegade Over thanksgiving I spent quite the time trying to setup Nixos on the Libre Board Renegade and I’d like to share some things here. Existing Documentation So the only pieces of existing documentation I could find is the existing nixos wiki page as well as this blog post. The wiki page details the basic configuration setting up a standard NixOS image for aarch64 however the blog post says that none of the prebuilt images would work ( likely due to the a different U-Boot ) and so it solves this by writing the official Libre Computer U-Boot to the sdImage.

Organizing NixOS Hello, the goal of this blog is being some guidelines for new NixOS users based on my experiences on “making a modular config”. You can of course organize it anyway you want. However, for most people it may cause decision paralysis 😭. Where you are Let’s assume you have a base configuration of already setup with flakes and home manager. We’ll also assume you want multiple computers using one configuration, such as a home lab and your desktop.