[python] Simple Encoder(variants of hex and base64)

mls577 · 07-05-2013, 07:43 AM

The other day I stumbled upon hackbar, a very nifty little addon for firefox:https://addons.mozilla.org/en-us/firefox/addon/hackbar/

I saw the encoding tab, and thought to myself why not try to give this a try in python? so I did, and here's the result:

Code:
#!/usr/bin/env/python3.1
#encoder.py
#mls577
#Shouts to haxme and #suidrewt


#imports
import sys
import binascii
import re

sys_argv = [] #text list
hex_list = [] #hex list


def main():
	#argument check
	if(len(sys.argv) < 2):
		usage()
	else:
		for word in sys.argv:
			sys_argv.append(word) #add text to list
		sys_argv.pop(0) #remove first entry from list(program name)
		
		string = " ".join(sys_argv) #convert list to one string
		bytes = to_bytes(string) #convert to bytes

		#hex
		hex_word = to_hex(bytes)
		hword_string = to_string(hex_word)
		
		#base64
		base64_word = to_base64(bytes) #convert to base64
		bword_string = to_string(base64_word) #convert back to usable string
		
		spaced_hex = re.findall("..", hword_string) #regex, add every two chars to a list
		
		#check to see if more than one hex character, this is for proper formatting
		if(len(hword_string) > 2):
			print("\nhex no spaces: " + hword_string) #hex no spaces
			print("\nhex with spaces: " + " ".join(spaced_hex)) #hex spaced
			print("\nhex seperated by : " + ":".join(spaced_hex)) #hex seperated by a colon
			print("\nhex seperated by % :" + "%" + "%".join(spaced_hex)) #hex seperated by percent sign
			print("\nunicode escaped: " + "\\x" + "\\x".join(spaced_hex)) #unicode escaped for a shellcode format
			print("\nbase64: " + bword_string) #base64
		else:
			print("\nhex: " + hword_string)
			print("\nhex with % : " + "%" + hword_string)
			print("\nhex unicode escaped: " + "\\x" + hword_string)
			print("\nbase64: " + bword_string)
				
				

def usage():
	
	print("usage: ./encode.py <string> ")
		
def to_bytes(string):
	return string.encode() #converts string to bytes

def to_hex(bytes):
	return binascii.hexlify(bytes) #convert to hex

def to_base64(bytes):
	return binascii.b2a_base64(bytes) #convert to base
	
def to_string(string):
	string = string.decode() #convert back to string from bytes
	string = string.rstrip() #remove newline from string
	
	return string
	
	

main()

I know I didn't write a decoder, but for my purposes I didn't need to, so I didn't.