Fri, 01 May 2026 06:56:10 +0000

Wrote up picoCTF 2019 Handy Shellcode, the long way: a 25-byte /bin/sh shellcode hand-rolled with `as`, no libraries, no cheat sheets. The challenge gives you an RWX page and reads your input straight into it — the fun part is the assembly that turns that pointer into a shell.