max.xz.ax blog

DiceCTF 2026 - garden pwn/garden was the most sophisticated binary exploitation challenge I wrote for DiceCTF Quals 2026.

What Cowponder Taught Me In ninth grade, my friend Alec gave me ssh access to his remote server.

Automatically Generating AP Music Theory Chorales Western music theory comes with a lot of rules: When writing counterpoint, no parallel fifths or octaves are allowed.

VuwCTF 2025 - string-inspector Of course one of my challenges had to be underconstrained. string-inspector actually wasn’t the hardest rev challenge I made for VuwCTF’s hybrid CTF competition, but had by far the funniest unexpected outcome.

corCTF 2025 - purely-functional-oop This blog was also posted to the Crusaders of Rust website.

corCTF 2025 - whatever-floats-your-boat This blog was also posted to the Crusaders of Rust website.

corCTF 2025 - bubble-vm This blog was also posted to the Crusaders of Rust website.

Code.org’s 2024 AP Computer Science A (APCSA) course explains in Unit 1, Lesson 3, that “In Java, a class is a programmer-defined blueprint from which objects are created.

In this previous post, we defined abstractions that could be used to build boolean and number systems from pure functional programming, and then applied it to implement the factorial function.

Google Sheets and Microsoft Excel support LAMBDA functions, which allow users to define reusable, lazily-evaluated abstractions with in arbitrary parameters.