ahmed4end

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:

	import re

	#the extended version
	def multiple_replace(dict, text):
	# Create a regular expression from the dictionary keys
	regex = re.compile("(%s)" % "\|".join(map(re.escape, dict.keys())))

	# For each match, look-up corresponding value in dictionary
	return regex.sub(lambda mo: dict[mo.string[mo.start():mo.end()]], text)

	/*
	In the node.js intro tutorial (http://nodejs.org/), they show a basic tcp
	server, but for some reason omit a client connecting to it. I added an
	example at the bottom.

	Save the following server in example.js:
	*/

	var net = require('net');

	import re, random, sys, time

	text = "Hello, World!, this message should be printed in a cool way xD"

	def CS_Printing(text): #random, re, sys, time
	letters = [chr(i) for i in range(65, 91)] + [chr(i) for i in range(97, 123)]
	core = lambda text:re.sub(random.sample(text, len(text))[0], random.choice(letters), text, count=1)
	res = [text]
	for i in range(len(text) + 5):
	for i in range(random.randint(1, 3)):

	import re, random, sys, time

	text = "Hello, World!, this message should be printed in a cool way xD"

	def CS_Printing2(text):
	text = list(text)
	letters = [chr(i) for i in range(65, 91)] + [chr(i) for i in range(97, 123)]
	res = ["".join(text)]
	for i in range(len(text)+5):
	for i in range(random.randint(0, 3)):

	#(0: clear step), (5 or any number other than zero: obstacles)
	state = [[0,0,0,0,0],
	[0,5,5,5,0],
	[0,5,5,5,0],
	[0,5,5,5,0],
	[0,0,0,0,0]]

	def access(state, x, y):
	try:return state[x][y]
	except:pass



	state = [[0 for i in range(50)] for j in range(50)]

	import random
	def access(state, x, y):
	try:return state[x][y]
	except:pass

	neighbours = lambda x, ngrid=len(state):list(filter(lambda x:x is not False,map(lambda x:x if 0<=x[0]<=ngrid-1 and x[1]>=0 and access(state, x[0], x[1]) == 0 else False, random.sample([(x[0],x[1]-1),(x[0]-1,x[1]),(x[0],x[1]+1),(x[0]+1,x[1])], 4))))

	methods = [i for i in dir(str) if not i[0]=="_"]
	for i in zip([iter(methods)]4):
	print("{:15}{:^15}{:^15}{:>15}".format(*i))


	mat = {}
	for i in range(5):
	for j in range(5):
	print((i,j), j+i*5)