feyor.sh

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I’ve been contemplating getting into FPV since I was in high school, but since I lived in Chicago at the time (and I didn’t own a car) there weren’t many places for me to fly a racing drone.

A while back I was messing around with eBPF and I couldn’t find any good materials on using BPF without libbpf/LLVM/GCC (i.e. rawdogging bytecode), so here’s the resource I wished I had.

The other day I was working on a pwn challenge and I noticed something interesting: its version of libc had partial RELRO enabled.

Table of Contents House of Force Fastbin dup Unsafe unlink Safe unlink House of Orange House of Spirit House of Lore House of Einherjar House of Rabbit Tcache dup Tcache dumping Below are some of my notes and challenge writeups for Max Kamper’s excellent…

Emacsjail was an Emacs Lisp jail challenge I wrote for UIUCTF 2025.

Helpful is a fantastic Emacs package that drastically improves the builtin help-mode.

I have a slight problem wherein every time I start up a game of NetHack, I completely lose touch with my surroundings for hours on end.

This challenge was my first experience with kernel pwn, and I’ve got to say it’s a pretty good introduction!

Disaster is an Emacs package authored by the venerable Justine Tunney that allows disassembling C/C++ and Fortran code from the comfort of your source editing buffer.

I was talking with my roommate about his Org agenda workflow and he noticed some “trivial” tasks cluttering his inbox.

I decided to start using an RSS client, primarily because I kept coming back to these same few blogs with really nice content and wanted to stay updated, but also because the signal-to-noise ratio on e.g.

Schrödinger’s Cat was a quantum computing misc challenge repurposed written for UIUCTF 2023.