Jevin Sweval
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jevinskie.bsky.social
Jevin Sweval
@jevinskie.bsky.social
230 followers 330 following 48 posts
KEYWORDS ➡︎ cats, hacking, reverse engineering, llvm, binary analysis, side channel analysis, FPGAs, NFC/EMV tricks

Previously Pay Security

he/him
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jevinskie.bsky.social
Operation Kitty Katch, night 1… wish me luck!

Trying to do some good in some bad times.
Photo of the interior of a shed with a cardboard box with a soft towel, Tupperware with cat food and water, and another cardboard box with litter in it. Photo of the outside of the shed with light creeping out of the cat-sized crack I left open, secured with a bungee cord.
October 12, 2025 at 2:08 AM
jevinskie.bsky.social
INTERPOSER SUPERPOWERS!!
October 1, 2025 at 12:58 PM
jevinskie.bsky.social
🫠

I dunno I haven’t tried any in years when they were all terrible. I think the cool kids are using a bouncer + a nice web UI?
App Store page for Colloquy, a very popular OS X IRC client that has an iOS port that was buggy and hasn’t been updated in 7 years.
August 24, 2025 at 12:20 PM
jevinskie.bsky.social
Good morning!
Morning rays of sun painting the East end of the clouds. In the bottom foreground are the back yards of a suburban cul-de-sac.
August 23, 2025 at 11:18 AM
jevinskie.bsky.social
Bogus!? Wake up sheeple, he’s right there!!!
Barack Hussein Obama nefariously scheming inside a microwave with a Nikon or Cannon SLR camera, wire tapping ur phones.
July 22, 2025 at 12:30 AM
jevinskie.bsky.social
What could go wrong? (Took me ages to find this).
February 15, 2025 at 3:49 PM
jevinskie.bsky.social
I’ve worked out the data dependencies for a round of SHA-1 with AArch64 SHA extensions. Fun DAG time! I’m curious if I can find a schedule that is amenable to a non-unrolled, smol implementation. It’s all yak shaving to replace OCaml’s slow MD5 Digest used for Sail’s SMT cache with truncated SHA-1.
dot graph of the DAG of data dependencies for a single SHA-1 round using AArch64 SHA instructions. Source dot: https://github.com/jevinskie/AArch64-SHA-Crypto-Extensions/blob/main/sha1-compress-one-hand-dag.dot
December 15, 2024 at 6:53 PM
jevinskie.bsky.social
Am I dreaming? No! It finally arrived! Thanks @1bitsquared@1bitsquared.com and the whole team who put this together!
Glasgow Interface Explorer, aluminum case, and cables
November 19, 2024 at 10:21 PM