Battle Programmer Yuu

Online Baddie

Organizer of the Binary Golf Grand Prix (binary.golf) @binarygolf

Editor and contributor for tmp.0ut (tmpout.sh) @tmpout

Website: n0.lol

Header Image by @hermit

Battle Programmer Yuunetspooky@haunted.computer
2026-01-19

@lcamtuf
They forgot to use the tranơformer!

Battle Programmer Yuunetspooky@haunted.computer
2026-01-18
Battle Programmer Yuu boosted:
2026-01-14

We are excited to announce the CFP for the next tmp.0ut Volume 5!

tmpout.sh/blog/vol5-cfp.html

Battle Programmer Yuu boosted:
2026-01-11

Hello Golfers!!!

There is ONE week left of #BGGP6 !

Get all your entries in by Sunday 2026-01-18!

Also, we have a new golfer mascot, but need a name for her. Reply below to help us think of a name!

This is the BGGP6 challenge prompt! Check out the rules and explore entries past and present.

github.com/binarygolf/BGGP/blo

The artist for our new mascot is memelow! Check out their site here: piku.page/@memelow

Drawing of a colorful pastel green and pink character in a futuristic golf outfit on a white background.
Battle Programmer Yuunetspooky@haunted.computer
2026-01-04

"The lights of Caracas were largely turned off, due to a certain expertise that we have"

It's honestly not particularly hard to attack critical infra, but if you do, you're just as bad if not worse than the people who ransomware hospitals.

Battle Programmer Yuunetspooky@haunted.computer
2026-01-01

Happy 56th Birthday 2 All The Hackers! 🎉

Battle Programmer Yuunetspooky@haunted.computer
2025-12-29

This is the first year for BGGP that there are less entries than previous years! There are still 3 weeks left. Check out the repo and send in a weird little file!!

haunted.computer/@binarygolf/1

Battle Programmer Yuunetspooky@haunted.computer
2025-12-29

My top 4 art pieces of 2025

  1. tmp.0ut Volume 4 ToC
  2. Phrack 72 CFP Promo Flyer
  3. Phrack 72 Cover
  4. BGGP6 Flyer

The first one is ASCII art, the rest are physical collages created with scissors, glue, stickers, stamps, typewriter, and photocopier.

tmp.0ut Volume 4 ToCPhrack 72 CFP Promo FlyerPhrack 72 CoverBGGP6 Flyer
Battle Programmer Yuunetspooky@haunted.computer
2025-12-10

@0x00string
Hell yeah!!

Battle Programmer Yuunetspooky@haunted.computer
2025-12-09

My 3.3-9v ass when a power engineer mf calls 480v "Low Voltage"

Reddy Kilowatt holding a knife at a concerned looking child
Battle Programmer Yuunetspooky@haunted.computer
2025-11-26

@neauoire

There have been a few linux bugs related to this that seem relevant. I like the name "tug-o-war memory model"!

qualys.com/2017/06/19/stack-cl

@june

Battle Programmer Yuunetspooky@haunted.computer
2025-11-26

RE: haunted.computer/@netspooky/11

Part 1 of my #BGGP6 writeup about nasm's most mysterious object file format, RDOFF.

n0.lol/bggp6-rdoff/

Battle Programmer Yuu boosted:
Foone🏳️‍⚧️foone@digipres.club
2025-11-24

wow, this 30-year-old floppy drive supports AI!

now that's forward compatibility for ya.

a solder via on a PCB labeled "SLOP"
Battle Programmer Yuunetspooky@haunted.computer
2025-11-24

@mirabilos
That seems to be the story all over haha

Battle Programmer Yuunetspooky@haunted.computer
2025-11-24

@mirabilos Did you ever use them for anything? It feels like a very forgotten format. nasm hasn't been able to emit a valid .rdf since at least mid 2018! All the tools for it were removed as of 2.16

Battle Programmer Yuunetspooky@haunted.computer
2025-11-24

here are the screenshots from today, the rdx binary running global.rdf, the file I created with my library

gdb executing the rdx binary with the global.rdf file as the argument, returning 6 and exitingscreenshot of a terminal with the rdx binary running global.rdf checking the return value, a hex dump of the file, and the output of the generator script that built it
Battle Programmer Yuunetspooky@haunted.computer
2025-11-24

RE: haunted.computer/@netspooky/11

Today I got RDOFF (.rdf) files working in nasm 2.15. I wrote my own lib bc nasm didn't generate properly. Also patched the 32-bit loader in rdx with mmap tricks (shoutout ixi). An executable RDOFF has likely never run on a 64 bit system before today. Writeup soon! #BGGP6

Screenshots in reply

Battle Programmer Yuunetspooky@haunted.computer
2025-11-23

Also, this is a golfed EROFS filesystem by bilger321! I love the base64 ASCII art in the padding. When you mount the filesystem it contains a file named "6".

Git issue: github.com/binarygolf/BGGP/iss

Writeup: gist.github.com/bilger321/3359

haunted.computer/@netspooky/11

Battle Programmer Yuunetspooky@haunted.computer
2025-11-23

RE: haunted.computer/@netspooky/11

Doing this again! This time I am looking into resurrecting an old object file format using scapy, and will probably look at some more entries for #BGGP6 . If you're working on any cool file stuff or just want to chat, come thru!

Battle Programmer Yuunetspooky@haunted.computer
2025-11-22

@binarygolf taking a little break, will be back on in a bit

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Server: https://mastodon.social
Version: 2025.07
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