Simple telnet credential harvester

telnet_auth.py

# usage: twistd -ny telnet_auth.py

from twisted.conch.telnet import TelnetTransport, AuthenticatingTelnetProtocol
from twisted.internet.protocol import ServerFactory
from twisted.application.internet import TCPServer
from twisted.application.service import Application

log = open('creds.log', 'a')

class TelnetHoneypot(AuthenticatingTelnetProtocol):
    def connectionMade(self):
        self.transport.write("Welcome to the HamWAN honeypot! Please provide a username and password.\r\n")
        self.transport.write("Username: ")

    def telnet_Password(self, line):
        print self.username, line
        log.write("%s\t%s\n" % (self.username, line))
        log.flush()
        self.transport.wont(chr(1)).addCallback(self._ebLogin)
        return 'Discard'

factory = ServerFactory()
factory.protocol = lambda: TelnetTransport(TelnetHoneypot, None)
service = TCPServer(8023, factory)

application = Application("Telnet Honeypot Server")
service.setServiceParent(application)