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@ioonag.bsky.social

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@ioonag.bsky.social · 8mo ago

Last December I solved @synacktiv.com 2025 Winter Challenge: Quinindrome bsky.app/profile/syna... . Here is a 81-byte Linux program which is both a quine (it prints itself when executed) and a palindrome (it is symmetrical)! To learn how I achieved it: github.com/fishilico/sy...

Screenshot of a terminal with a hexadecimal dump of a 81-byte Quinindrome: $ ./solution_3_minimal.bin | xxd 00000000: 7f45 4c46 80cd 584b 80cd 51b2 4508 e1c1 .ELF..XK..Q.E... 00000010: 0200 0300 b904 0443 3900 0300 2c00 0000 .......C9...,... 00000020: 2c00 0000 0100 205e 5f5e 2000 0100 0000 ,..... ^_^ ..... 00000030: 2c00 0000 2c00 0300 3943 0404 b900 0300 ,...,...9C...... 00000040: 02c1 e108 45b2 51cd 804b 58cd 8046 4c45 ....E.Q..KX..FLE 00000050: 7f
Synacktiv@synacktiv.com · 10mo ago

Winter is here, it's time to test your assembly skills with the #Synacktiv Winter Challenge 🏂. A code golf competition that guarantees hours of intense x86 instruction optimization! 🔗 Participate here: www.synacktiv.com/en/publicati...

@ioonag.bsky.social · 8mo ago

libsodium 1.0.21 was released yesterday 🎉 github.com/jedisct1/lib... It fixes a small issue I found, showing how hard it is to write C code: github.com/jedisct1/lib... (fixed by github.com/jedisct1/lib... and github.com/jedisct1/lib...)

Release 1.0.21 · jedisct1/libsodium

Version 1.0.21 This point release includes all the changes from 1.0.20-stable, which include a security fix for the crypto_core_ed25519_is_valid_point() function, as well as two new sets of functio...

github.com

@ioonag.bsky.social · last yr.

This summer @synacktiv.com organized an interesting challenge: the aim was to craft a container image as small as possible which replicated itself (i.e. an OCI Image Quine), bsky.app/profile/syna.... I am now publishing a write-up of what I did (Rust/asm/code golfing/...): github.com/fishilico/sy...

github.com

Synacktiv@synacktiv.com · last yr.

The latest Synacktiv Summer Challenge was in 2019, and after 6 years, it's back! Send us your solution before the end of August, there are skills to learn and prizes to win 🎁 www.synacktiv.com/en/publicati...