Skip to content

Instantly share code, notes, and snippets.

Avatar

James Milne shakna-israel

View GitHub Profile
View generator.py
# https://www.reddit.com/r/thethirdcave/
import secrets
import hashlib
quotes = []
init_salt = "?".encode()
salt = init_salt
@shakna-israel
shakna-israel / test.sh
Created Jun 28, 2020
Predictable Limits on Python's JSON Parser
View test.sh
#!/bin/sh
# Python will hit it's recursion limit
# If you supply just 4 less than the recursion limit
# I assume this means there's a few objects on the call stack first
# Probably: __main__, print, json.loads, and input.
n="$(python3 -c 'import math; import sys; sys.stdout.write(str(math.floor(sys.getrecursionlimit() - 4)))')"
echo "N: $n"
View Prose.md

Expectation

We're basically just calling an infinite loop here, passing an int, that we never change, forward.

There shouldn't be any memory being allocated, and so this should just continue on forever.

Reality

Segmentation Fault.

View LetsDestroyC.md

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?


View hello.js
console.log([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]((!![]+[])[+!+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+([][[]]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+!+[]]+(+[![]]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+
View fib.js
var fib = eval(([][[]]+[])[+!+[]]+(+[![]]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+!+[]]]+([]+[])[(![]+[])[+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(!![]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]()[+!+[]+[+!+[]]]+([]+[])[([![]]+[][[]])[+!+[]+[+[]]]+(!![]+[])[+[]]+(![]+[])[+!+[]]+(![]+[])[!+[]+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]
View Prose.md

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.


@shakna-israel
shakna-israel / Prose.md
Last active Sep 22, 2020
Obfuscating Python
View Prose.md

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:
@shakna-israel
shakna-israel / crusher
Created Aug 11, 2018
crush all the images!
View crusher
#!/bin/bash
png() {
w=$(mktemp)
pngcrush -brute "$1" "$w"
rm "$1"
mv "$w" "$1"
du -b "$1"
}
@shakna-israel
shakna-israel / .vimrc
Last active Mar 21, 2018
A simple vim
View .vimrc
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
You can’t perform that action at this time.