#!/usr/bin/python
# SECUREAUTH LABS. Copyright 2018 SecureAuth Corporation. All rights reserved.
#
# This software is provided under under a slightly modified version
# of the Apache Software License. See the accompanying LICENSE file
# for more information.
#
# Description: [MS-WMI] example. It allows to issue WQL queries and
#              get description of the objects.
#
#              e.g.: select name from win32_account
#              e.g.: describe win32_process
# 
# Author:
#  Alberto Solino (@agsolino)
#
# Reference for:
#  DCOM
#
from __future__ import division
from __future__ import print_function
import argparse
import sys
import os
import logging

from impacket.examples import logger
from impacket.examples.utils import parse_target
from impacket import version
from impacket.dcerpc.v5.dtypes import NULL
from impacket.dcerpc.v5.dcom import wmi
from impacket.dcerpc.v5.dcomrt import DCOMConnection, COMVERSION
from impacket.dcerpc.v5.rpcrt import RPC_C_AUTHN_LEVEL_PKT_PRIVACY, RPC_C_AUTHN_LEVEL_PKT_INTEGRITY

if __name__ == '__main__':
    import cmd

    class WMIQUERY(cmd.Cmd):
        def __init__(self, iWbemServices):
            cmd.Cmd.__init__(self)
            self.iWbemServices = iWbemServices
            self.prompt = 'WQL> '
            self.intro = '[!] Press help for extra shell commands'

        def do_help(self, line):
            print("""
     lcd {path}                 - changes the current local directory to {path}
     exit                       - terminates the server process (and this session)
     describe {class}           - describes class
     ! {cmd}                    - executes a local shell cmd
     """) 

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

        def do_describe(self, sClass):
            sClass = sClass.strip('\n')
            if sClass[-1:] == ';':
                sClass = sClass[:-1]
            try:
                iObject, _ = self.iWbemServices.GetObject(sClass)
                iObject.printInformation()
                iObject.RemRelease()
            except Exception as e:
                if logging.getLogger().level == logging.DEBUG:
                    import traceback
                    traceback.print_exc()
                logging.error(str(e))

        def do_lcd(self, s):
            if s == '':
                print(os.getcwd())
            else:
                os.chdir(s)
    
        def printReply(self, iEnum):
            printHeader = True
            while True:
                try:
                    pEnum = iEnum.Next(0xffffffff,1)[0]
                    record = pEnum.getProperties()
                    if printHeader is True:
                        print('|', end=' ')
                        for col in record:
                            print('%s |' % col, end=' ')
                        print()
                        printHeader = False
                    print('|', end=' ') 
                    for key in record:
                        if type(record[key]['value']) is list:
                            for item in record[key]['value']:
                                print(item, end=' ')
                            print(' |', end=' ')
                        else:
                            print('%s |' % record[key]['value'], end=' ')
                    print() 
                except Exception as e:
                    if logging.getLogger().level == logging.DEBUG:
                        import traceback
                        traceback.print_exc()
                    if str(e).find('S_FALSE') < 0:
                        raise
                    else:
                        break
            iEnum.RemRelease() 

        def default(self, line):
            line = line.strip('\n')
            if line[-1:] == ';':
                line = line[:-1]
            try:
                iEnumWbemClassObject = self.iWbemServices.ExecQuery(line.strip('\n'))
                self.printReply(iEnumWbemClassObject)
                iEnumWbemClassObject.RemRelease()
            except Exception as e:
                logging.error(str(e))
         
        def emptyline(self):
            pass

        def do_exit(self, line):
            return True

    # Init the example's logger theme
    logger.init()
    print(version.BANNER)

    parser = argparse.ArgumentParser(add_help = True, description = "Executes WQL queries and gets object descriptions "
                                                                    "using Windows Management Instrumentation.")
    parser.add_argument('target', action='store', help='[[domain/]username[:password]@]<targetName or address>')
    parser.add_argument('-namespace', action='store', default='//./root/cimv2', help='namespace name (default //./root/cimv2)')
    parser.add_argument('-file', type=argparse.FileType('r'), help='input file with commands to execute in the WQL shell')
    parser.add_argument('-debug', action='store_true', help='Turn DEBUG output ON')
    parser.add_argument('-com-version', action='store', metavar = "MAJOR_VERSION:MINOR_VERSION", help='DCOM version, '
                        'format is MAJOR_VERSION:MINOR_VERSION e.g. 5.7')

    group = parser.add_argument_group('authentication')

    group.add_argument('-hashes', action="store", metavar = "LMHASH:NTHASH", help='NTLM hashes, format is LMHASH:NTHASH')
    group.add_argument('-no-pass', action="store_true", help='don\'t ask for password (useful for -k)')
    group.add_argument('-k', action="store_true", help='Use Kerberos authentication. Grabs credentials from ccache file '
                       '(KRB5CCNAME) based on target parameters. If valid credentials cannot be found, it will use the '
                       'ones specified in the command line')
    group.add_argument('-aesKey', action="store", metavar = "hex key", help='AES key to use for Kerberos Authentication '
                                                                            '(128 or 256 bits)')
    group.add_argument('-dc-ip', action='store',metavar = "ip address",  help='IP Address of the domain controller. If '
                       'ommited it use the domain part (FQDN) specified in the target parameter')
    group.add_argument('-rpc-auth-level', choices=['integrity', 'privacy','default'], nargs='?', default='default',
                       help='default, integrity (RPC_C_AUTHN_LEVEL_PKT_INTEGRITY) or privacy '
                            '(RPC_C_AUTHN_LEVEL_PKT_PRIVACY). For example CIM path "root/MSCluster" would require '
                            'privacy level by default)')

    if len(sys.argv)==1:
        parser.print_help()
        sys.exit(1)
 
    options = parser.parse_args()

    if options.debug is True:
        logging.getLogger().setLevel(logging.DEBUG)
        # Print the Library's installation path
        logging.debug(version.getInstallationPath())
    else:
        logging.getLogger().setLevel(logging.INFO)

    if options.com_version is not None:
        try:
            major_version, minor_version = options.com_version.split('.')
            COMVERSION.set_default_version(int(major_version), int(minor_version))
        except Exception:
            logging.error("Wrong COMVERSION format, use dot separated integers e.g. \"5.7\"")
            sys.exit(1)

    domain, username, password, address = parse_target(options.target)

    if domain is None:
        domain = ''

    if password == '' and username != '' and options.hashes is None and options.no_pass is False and options.aesKey is None:
        from getpass import getpass
        password = getpass("Password:")

    if options.aesKey is not None:
        options.k = True

    if options.hashes is not None:
        lmhash, nthash = options.hashes.split(':')
    else:
        lmhash = ''
        nthash = ''

    try:
        dcom = DCOMConnection(address, username, password, domain, lmhash, nthash, options.aesKey, oxidResolver=True,
                              doKerberos=options.k, kdcHost=options.dc_ip)

        iInterface = dcom.CoCreateInstanceEx(wmi.CLSID_WbemLevel1Login,wmi.IID_IWbemLevel1Login)
        iWbemLevel1Login = wmi.IWbemLevel1Login(iInterface)
        iWbemServices= iWbemLevel1Login.NTLMLogin(options.namespace, NULL, NULL)
        if options.rpc_auth_level == 'privacy':
            iWbemServices.get_dce_rpc().set_auth_level(RPC_C_AUTHN_LEVEL_PKT_PRIVACY)
        elif options.rpc_auth_level == 'integrity':
            iWbemServices.get_dce_rpc().set_auth_level(RPC_C_AUTHN_LEVEL_PKT_INTEGRITY)

        iWbemLevel1Login.RemRelease()

        shell = WMIQUERY(iWbemServices)
        if options.file is None:
            shell.cmdloop()
        else:
            for line in options.file.readlines():
                print("WQL> %s" % line, end=' ')
                shell.onecmd(line)

        iWbemServices.RemRelease()
        dcom.disconnect()
    except Exception as e:
        logging.error(str(e))
        try:
            dcom.disconnect()
        except:
            pass
