› echo $GREETING
I tinker, therefore I am...
Recent
› ls -lv | head -n 7
total 19
total 19
Exploring the Cardputer
After buying another Cardputer I figured it might be worth exploring what can be done with it [them].
Apr 04 2026
LA CTF 2026 - zero-trust web challenge
Shrinking the AES-GCM auth tag to one byte and brute-forcing 256 values to forge a cookie and read the flag.
Feb 08 2026
LA CTF 2026 - a web challenge writeup [blogler]
Exploiting YAML anchor aliasing and a post-validation string transform to sneak a path traversal past the filter.
Feb 08 2026
LA CTF 2026 - the starless-c writeup
A maze hidden inside 58 ELF LOAD segments - solving a sliding puzzle of crash rooms with BFS to reach the flag.
Feb 08 2026
LA CTF 2026 - the 1986 challenge writeup
Reversing a tiny MS-DOS binary from a floppy disk image - cracking a 20-bit LFSR seed by brute force.
Feb 08 2026
Pentesting on a Dell Venue 11 Pro (7140)
(...)
Turning a cheap Dell Venue 11 Pro tablet into a portable pentesting lab with Parrot OS and an external Wi-Fi antenna.
Jan 18 2026