cowrie/core/Kippo.py

from twisted.cred import portal, checkers, credentials
from twisted.conch import error, avatar, recvline, interfaces as conchinterfaces
from twisted.conch.ssh import factory, userauth, connection, keys, session, common
from twisted.conch.insults import insults
from twisted.application import service, internet
from twisted.protocols.policies import TrafficLoggingFactory
from twisted.internet import reactor, protocol
from twisted.python import log
from zope.interface import implements
from copy import deepcopy
import sys, os, random, pickle, time, stat, copy

from core import ttylog
from core.fstypes import *

moi = 1

class HoneyPotProtocol(recvline.HistoricRecvLine):
    def __init__(self, user, env):
        self.user = user
        self.env = env
        self.cwd = '/root'
        self.fs = HoneyPotFilesystem(deepcopy(self.env.fs))

    def connectionMade(self):
        recvline.HistoricRecvLine.connectionMade(self)
        self.showPrompt()

    # Overriding to prevent terminal.reset()
    def initializeScreen(self):
        self.setInsertMode()

    def showPrompt(self):
        path = self.cwd
        if path == '/root':
            path = '~'
        self.terminal.write('sales:%s# ' % path)

    def getCommandFunc(self, cmd):
        return getattr(self, 'do_' + cmd, None)

    def getCommand(self, cmd, args):
        path = None

        if cmd in self.env.commands:
            return self.env.commands[cmd](self)

        if cmd[0] in ('.', '/'):
            path = self.fs.resolve_path(cmd, self.cwd)
            if not self.fs.exists(path):
                return None
        else:
            for i in ['%s/%s' % (x, cmd) for x in \
                    '/bin', '/usr/bin', '/sbin', '/usr/sbin']:
                if self.fs.exists(i):
                    path = i
                    break
        if path in self.env.commands:
            return self.env.commands[path](self)
        return None

    def lineReceived(self, line):
        line = line.strip()
        if line:
            print 'CMD: %s' % line
            cmdAndArgs = line.split(' ', 1)
            cmd = cmdAndArgs[0]
            args = ''
            if len(cmdAndArgs) > 1:
                args = cmdAndArgs[1]
            obj = self.getCommand(cmd, args)
            if obj:
                try:
                    obj.call(args)
                    del obj
                except Exception, e:
                    print e
                    self.writeln("Segmentation fault")
            else:
                self.writeln('bash: %s: command not found' % cmd)
        self.showPrompt()

    def keystrokeReceived(self, keyID, modifier):
        ttylog.ttylog_write(self.terminal.ttylog_file, len(keyID),
            ttylog.DIR_READ, time.time(), keyID)
        recvline.HistoricRecvLine.keystrokeReceived(self, keyID, modifier)

    def writeln(self, data):
        self.terminal.write(data)
        self.terminal.nextLine()

class HoneyPotCommand(object):
    def __init__(self, honeypot):
        self.honeypot = honeypot

    def call(self, *args):
        self.honeypot.writeln('Hello World!')

class LoggingServerProtocol(insults.ServerProtocol):
    def connectionMade(self):
        print dir(self.transport.session)
        #print self.transport.session.getHost()
        #print self.transport.session.getPeer()
        print self.transport.session.id
        self.ttylog_file = './log/tty/%s-%s.log' % \
            (time.strftime('%Y%m%d-%H%M%S'), int(random.random() * 10000))
        print 'Opening TTY log: %s' % self.ttylog_file
        ttylog.ttylog_open(self.ttylog_file, time.time())
        self.ttylog_open = True
        insults.ServerProtocol.connectionMade(self)

    def write(self, bytes):
        if self.ttylog_open:
            ttylog.ttylog_write(self.ttylog_file, len(bytes),
                ttylog.DIR_WRITE, time.time(), bytes)
        insults.ServerProtocol.write(self, bytes)

    def connectionLost(self, reason):
        if self.ttylog_open:
            ttylog.ttylog_close(self.ttylog_file, time.time())
            self.ttylog_open = False

class HoneyPotAvatar(avatar.ConchUser):
    implements(conchinterfaces.ISession)

    def __init__(self, username, env):
        avatar.ConchUser.__init__(self)
        self.username = username
        self.env = env
        self.channelLookup.update({'session':session.SSHSession})

    def openShell(self, protocol):
        serverProtocol = LoggingServerProtocol(HoneyPotProtocol, self, self.env)
        serverProtocol.makeConnection(protocol)
        protocol.makeConnection(session.wrapProtocol(serverProtocol))

    def getPty(self, terminal, windowSize, attrs):
        return None

    def execCommand(self, protocol, cmd):
        raise NotImplementedError

    def closed(self):
        pass

class HoneyPotEnvironment(object):
    def __init__(self):
        from core.cmdl import cmdl
        self.commands = cmdl

        print 'Loading filesystem...',
        sys.stdout.flush()
        self.fs = pickle.load(file('fs.pickle'))
        print 'done'

class HoneyPotFilesystem(object):
    def __init__(self, fs):
        self.fs = fs

    def resolve_path(self, path, cwd):
        pieces = path.rstrip('/').split('/')

        if path[0] == '/':
            cwd = []
        else:
            cwd = [x for x in cwd.split('/') if len(x) and x is not None]

        while 1:
            if not len(pieces):
                break
            piece = pieces.pop(0)
            if piece == '..':
                if len(cwd): cwd.pop()
                continue
            if piece in ('.', ''):
                continue
            cwd.append(piece)

        return '/%s' % '/'.join(cwd)

    def get_path(self, path):
        p = self.fs
        for i in path.split('/'):
            if not i:
                continue
            p = [x for x in p[A_CONTENTS] if x[A_NAME] == i][0]
        return p[A_CONTENTS]

    def list_files(self, path):
        return self.get_path(path)

    def exists(self, path):
        pieces = path.strip('/').split('/')
        p = self.fs
        while 1:
            if not len(pieces):
                break
            piece = pieces.pop(0)
            if piece not in [x[A_NAME] for x in p[A_CONTENTS]]:
                return False
            p = [x for x in p[A_CONTENTS] \
                if x[A_NAME] == piece][0]
        return True

class HoneyPotRealm:
    implements(portal.IRealm)

    def __init__(self):
        # I don't know if i'm supposed to keep static stuff here
        self.env = HoneyPotEnvironment()

    def requestAvatar(self, avatarId, mind, *interfaces):
        if conchinterfaces.IConchUser in interfaces:
            return interfaces[0], \
                HoneyPotAvatar(avatarId, self.env), lambda: None
        else:
            raise Exception, "No supported interfaces found."

def getRSAKeys():
    if not (os.path.exists('public.key') and os.path.exists('private.key')):
        # generate a RSA keypair
        print "Generating RSA keypair..."
        from Crypto.PublicKey import RSA
        KEY_LENGTH = 1024
        rsaKey = RSA.generate(KEY_LENGTH, common.entropy.get_bytes)
        publicKeyString = keys.makePublicKeyString(rsaKey)
        privateKeyString = keys.makePrivateKeyString(rsaKey)
        # save keys for next time
        file('public.key', 'w+b').write(publicKeyString)
        file('private.key', 'w+b').write(privateKeyString)
        print "done."
    else:
        publicKeyString = file('public.key').read()
        privateKeyString = file('private.key').read()
    return publicKeyString, privateKeyString