David Buchanan's Blog https://www.da.vidbuchanan.co.uk/blog/ CTF writeups, programming, and miscellaneous stuff. SIMD in Pure Python https://www.da.vidbuchanan.co.uk/blog/python-swar.html https://www.da.vidbuchanan.co.uk/blog/python-swar.html Thu, 04 Jan 2024 00:00:00 +0000 Text Editors Should Be Worse https://www.da.vidbuchanan.co.uk/blog/annoying-text-editors.html https://www.da.vidbuchanan.co.uk/blog/annoying-text-editors.html Tue, 02 Jan 2024 00:00:00 +0000 2024 Will Be the Year of the Blog https://www.da.vidbuchanan.co.uk/blog/year-of-the-blog.html https://www.da.vidbuchanan.co.uk/blog/year-of-the-blog.html Sun, 31 Dec 2023 00:00:00 +0000 Another Way Not to Sign JSON https://www.da.vidbuchanan.co.uk/blog/signing-json.html https://www.da.vidbuchanan.co.uk/blog/signing-json.html Wed, 27 Dec 2023 00:00:00 +0000 Blogging With Math https://www.da.vidbuchanan.co.uk/blog/mathml-blogging.html https://www.da.vidbuchanan.co.uk/blog/mathml-blogging.html Tue, 26 Dec 2023 00:00:00 +0000 Colliding Secure Hashes https://www.da.vidbuchanan.co.uk/blog/colliding-secure-hashes.html https://www.da.vidbuchanan.co.uk/blog/colliding-secure-hashes.html Mon, 18 Dec 2023 00:00:00 +0000 Hijacking Bluesky Identities with a Malleable Deputy https://www.da.vidbuchanan.co.uk/blog/hacking-bluesky.html https://www.da.vidbuchanan.co.uk/blog/hacking-bluesky.html Thu, 28 Sep 2023 00:00:00 +0000 s32 Unix Clock https://www.da.vidbuchanan.co.uk/blog/unix-clock.html https://www.da.vidbuchanan.co.uk/blog/unix-clock.html Wed, 13 Sep 2023 00:00:00 +0000 Exploiting aCropalypse: Recovering Truncated PNGs https://www.da.vidbuchanan.co.uk/blog/exploiting-acropalypse.html https://www.da.vidbuchanan.co.uk/blog/exploiting-acropalypse.html Sat, 18 Mar 2023 00:00:00 +0000 The Quest for Netflix on Asahi Linux https://www.da.vidbuchanan.co.uk/blog/netflix-on-asahi.html https://www.da.vidbuchanan.co.uk/blog/netflix-on-asahi.html Thu, 09 Mar 2023 00:00:00 +0000 Hello, PNG! https://www.da.vidbuchanan.co.uk/blog/hello-png.html https://www.da.vidbuchanan.co.uk/blog/hello-png.html Mon, 16 Jan 2023 00:00:00 +0000 BGGP3: Chipping Out https://www.da.vidbuchanan.co.uk/blog/bggp3.html https://www.da.vidbuchanan.co.uk/blog/bggp3.html Sat, 30 Jul 2022 00:00:00 +0000 V8 Heap pwn and /dev/memes - WebOS Root LPE https://www.da.vidbuchanan.co.uk/blog/webos-wampage.html https://www.da.vidbuchanan.co.uk/blog/webos-wampage.html Tue, 28 Dec 2021 00:00:00 +0000 35c3ctf: Collection - an Unintended Solution! https://www.da.vidbuchanan.co.uk/blog/35c3ctf-collection-writeup.html https://www.da.vidbuchanan.co.uk/blog/35c3ctf-collection-writeup.html Sun, 30 Dec 2018 00:00:00 +0000 WPICTF 2018: Forker[1-4] Writeup - Blind-ish ROP https://www.da.vidbuchanan.co.uk/blog/WPICTF-2018-forker-writeup.html https://www.da.vidbuchanan.co.uk/blog/WPICTF-2018-forker-writeup.html Sun, 15 Apr 2018 00:00:00 +0000 WPICTF 2018: Jay-Peg Writeup - LSB-Stego https://www.da.vidbuchanan.co.uk/blog/WPICTF-2018-jay-peg-writeup.html https://www.da.vidbuchanan.co.uk/blog/WPICTF-2018-jay-peg-writeup.html Sun, 15 Apr 2018 00:00:00 +0000 HITB-XCTF GSEC 2018 Quals: babypwn - Blind Format String Exploitation https://www.da.vidbuchanan.co.uk/blog/HITB-XCTF-2018-babypwn.html https://www.da.vidbuchanan.co.uk/blog/HITB-XCTF-2018-babypwn.html Fri, 13 Apr 2018 00:00:00 +0000 0CTF 2018 Quals: Baby Stack - ret2dlresolve https://www.da.vidbuchanan.co.uk/blog/0CTF-2018-babystack-ret2dlresolve.html https://www.da.vidbuchanan.co.uk/blog/0CTF-2018-babystack-ret2dlresolve.html Tue, 03 Apr 2018 00:00:00 +0000 Crashing QEMU VGA Drivers - The Story of my First CVE https://www.da.vidbuchanan.co.uk/blog/crashing-qemu.html https://www.da.vidbuchanan.co.uk/blog/crashing-qemu.html Sun, 07 Jan 2018 00:00:00 +0000 CTF Writeup: Hackvent 2017 Day 23 - "Only Perl" https://www.da.vidbuchanan.co.uk/blog/hackvent-2017-d23.html https://www.da.vidbuchanan.co.uk/blog/hackvent-2017-d23.html Sat, 06 Jan 2018 00:00:00 +0000 CTF Writeup: Hackvent 2017 Day 21 - "Tamagotchi" https://www.da.vidbuchanan.co.uk/blog/hackvent-2017-d21.html https://www.da.vidbuchanan.co.uk/blog/hackvent-2017-d21.html Sat, 06 Jan 2018 00:00:00 +0000 Hello, world! https://www.da.vidbuchanan.co.uk/blog/hello-world.html https://www.da.vidbuchanan.co.uk/blog/hello-world.html Mon, 01 Jan 2018 00:00:00 +0000