James Milne shakna-israel

Let's Destroy C

I have a pet project I work on, every now and then. CNoEvil.

The concept is simple enough.

What if, for a moment, we forgot all the rules we know. That we ignore every good idea, and accept all the terrible ones. That nothing is off limits. Can we turn C into a new language? Can we do what Lisp and Forth let the over-eager programmer do, but in C?

Obfuscating Lua

I've had some fun ruining Python recently, but Python is what I use at work. I prefer to use other languages when I'm doing stuff for fun.

And obfuscation only really makes sense in fun and competition - given a suffeciently determined actor, your code will be reverse engineered. Unless you write it in Malboge.

For this particular experiment, I'll be using Lua 5.3. As I'll probably need to dive into some of the less portable functions to commit our atrocities, I can't guarantee it will run on other popular versions like Luajit or 5.1.

Obfuscating Python

Obfuscation isn't difficult in most programming languages. It's why we have "good practices" because it is so easy to hide what you mean in badly written code.

Obfuscation tends to be even easier in dynamic languages because of how forgiving they tend to be - and because they tend to give you direct access to the environment so that you can manipulate it.

Today, for fun, I'm going to obfuscate this code:

def _(n):

if n <= 0:

	#!/bin/bash

	png() {
	w=$(mktemp)
	pngcrush -brute "$1" "$w"
	rm "$1"
	mv "$w" "$1"
	du -b "$1"
	}

	set nocompatible " must be the first line
	filetype on
	filetype indent on
	filetype plugin on
	set nowrap
	set laststatus=2
	set statusline=%<%f\%h%m%r%=%-20.(line=%l\ \ col=%c%V\ \ totlin=%L%)\ \ \%h%m%r%=%-40(bytval=0x%B,%n%Y%)\%P
	set ofu=syntaxcomplete#Complete
	" Above is SSH compatibility fixes

	ﬂﬂnitzd ﬁatzs t$matt

	WASHINGTON, DC 20510

	November 15, 2017

	The Honorable David L. Hunt

	Inspector General

	#include <EEPROM.h>
	#include "base64.hpp"

	void help() {
	Serial.println(F("Ardl Helpfile\n"
	"\n"
	"System Limitations:\n"
	"Maximum Input Length: 255 characters\n"
	"CPU Speed: 8Mhz\n"
	"\n"