DiceCTF 2026 pwn/garden: Exploiting a Moving Garbage Collector
DiceCTF 2026 - garden
max.xz.ax blog
stuff that i do i guess... thanks, chop0
Latest posts
What Cowponder Taught Me
What Cowponder Taught Me
Automatically Generating AP Music Theory Chorales
Automatically Generating AP Music Theory Chorales
VuwCTF 2025 string-inspector: Obfuscating control flow using execve syscalls
VuwCTF 2025 - string-inspector
corCTF 2025 purely-functional-oop: Compiling object-oriented code into Google Sheets expressions
corCTF 2025 - purely-functional-oop
corCTF 2025 whatever-floats-your-boat: Obfuscation using IEEE 754 floating-point exceptions
corCTF 2025 - whatever-floats-your-boat
corCTF 2025 bubble-vm: Obfuscation behind a two-pointer RISC VM
corCTF 2025 - bubble-vm
Rethinking Object-Oriented Programming in Java Education
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. An object is an instance of a class.” On the very next slide, the instructors elaborate by saying “An instance of a class means that it is a copy of the class with its own unique set of information. Without the class, you can’t…
Object-Oriented Programming in Google Sheets
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. This pure system can become difficult to write with and often struggles to generalize complex data types, whereas languages such as Java and Python support more complex abstractions combining data and…
Pure Functional Programming with Spreadsheets
Google Sheets and Microsoft Excel support LAMBDA functions, which allow users to define reusable, lazily-evaluated abstractions with in arbitrary parameters. There’s just one problem: these formulae cannot be stored as the output of a cell, making it difficult to construct objects under the functional programming model.