https://manueee13.github.io/ CTF writeups, organized challenge notes, and cybersecurity blog posts by manueee13. en Sat, 27 Jun 2026 00:00:00 GMT 60 https://manueee13.github.io/organized/2026/mntcrlctf2026/rev/alicenseonapsx/alicenseonapsx https://manueee13.github.io/organized/2026/mntcrlctf2026/rev/alicenseonapsx/alicenseonapsx Sat, 27 Jun 2026 00:00:00 GMT Reverse engineering a custom PS1/OpenBIOS license check, from DuckStation debugging to HMAC-SHA256 license generation and loader patching. Organized CTF rev https://manueee13.github.io/ctf/2026/bk2026/osint/eye-on-the-sky/eye-on-the-sky https://manueee13.github.io/ctf/2026/bk2026/osint/eye-on-the-sky/eye-on-the-sky Sat, 21 Feb 2026 00:00:00 GMT CTF writeup for Eye on the Sky. CTF osint https://manueee13.github.io/htb/season9/monitorsfour/monitorsfour_en https://manueee13.github.io/htb/season9/monitorsfour/monitorsfour_en Tue, 09 Dec 2025 00:00:00 GMT HackTheBox writeup for MonitorsFour. HackTheBox Season 9 https://manueee13.github.io/ctf/2025/sun2025/rev/warp/warp https://manueee13.github.io/ctf/2025/sun2025/rev/warp/warp Sun, 28 Sep 2025 00:00:00 GMT CTF writeup for Warp. CTF rev https://manueee13.github.io/ctf/2025/toh2025/rev/bigembeddedsystem/bigembeddedsystem https://manueee13.github.io/ctf/2025/toh2025/rev/bigembeddedsystem/bigembeddedsystem Sun, 20 Jul 2025 00:00:00 GMT CTF writeup for Big Embedded System. CTF rev https://manueee13.github.io/ctf/2025/toh2025/rev/tinyembeddedsystem/tinyembeddedsystem https://manueee13.github.io/ctf/2025/toh2025/rev/tinyembeddedsystem/tinyembeddedsystem Sun, 20 Jul 2025 00:00:00 GMT CTF writeup for Tiny Embedded System. CTF rev https://manueee13.github.io/htb/season7/whiterabbit/whiterabbit https://manueee13.github.io/htb/season7/whiterabbit/whiterabbit Sat, 12 Apr 2025 00:00:00 GMT HackTheBox writeup for WhiteRabbit. HackTheBox Season 7