Shader notes and learnings Links Godot 3.0 doc’s define built-in properties. Link. The stable docs removed the documentation for these properties. Notes SCREEN_UV = FRAGCOORD.xy / VIEWPORT_SIZE SCREEN_UV = FRAGCOORD.xy * SCREEN_PIXEL_SIZE.xy VIEWPORT_SIZE = 1. / SCREEN_PIXEL_SIZE VIEWPORT_SIZE is not available in canvas_item shaders UV — the texture coordinates of the object…

Reversing puzzles, Ghidra, and ghosts! —

These instructions were tested with macOS Catalina version 10.15.3. Download Ghidra from the NSA’s website. Extract the contents. Give the decompiler permissions to run. If you were to run Ghidra now, upon analyzing the binary, you’ll receive a message that indicates you are prevented from opening an app from an…

Dithering made simple

Tutorial on how to create negative copper cut outs in KiCad. Make your next PCB badge extra fancy with glowing cut outs!

A sampling of reverse engineering puzzle write ups — BSidesSF’s CTF was last week and I must give props to the organizers for putting on such a smooth show. I participated along side a group of coworkers from Square and we ranked third of the on-site teams. 🎉 I worked on two of the reverse engineering puzzles, and had…

These are the steps required to set up a Wacom tablet with Ubuntu 16.04. Install Drivers You can find instructions to directly install or build Wacom driver for Ubuntu here. This should install xserver-xorg-input-wacom, libwacom2, and libwacom-common. Restart your computer once the drivers are installed. …

Charming device that is everything nice. — The Switch had one of the smoothest releases in console history and I’ve had loads of fun playing with mine since then. Nintendo has been rolling out new games every week and I am writing this review for people still on the fence of making the purchase. Charm I fell in…

In an attempt to learn more about 3DS hacking, I put together some notes on terms and concepts related to some of the exciting stuff happening in the 3DS community. My notes are somewhat unorganized (I typed them up in markdown, which Medium does not like…), but it’s an attempt…