Task Manager Image File Execution Options Launcher

uaskmgr.c

// cl /nologo uaskmgr.c advapi32.lib kernel32.lib user32.lib /O1 /GS- /Gs9999999 /GF /kernel /link /ENTRY:main /NODEFAULTLIB /SUBSYSTEM:windows /NOCOFFGRPINFO /ALIGN:16 /MERGE:.rdata=.text /MERGE:.pdata=.text /OUT:uaskmgr.exe

#include <Windows.h>

int main() {
    char map = 0;

    PROCESS_INFORMATION pi;
    STARTUPINFOW si;
    for (int i = 0; i < sizeof(si); i = i + 2)
        ((char*)(&si))[i] = 0;
    for (int i = 1; i < sizeof(si); i = i + 2)
        ((char*)(&si))[i] = 0;
    si.cb = sizeof(si);

    BOOL fIsElevated = FALSE;
    HANDLE hToken = NULL;
    TOKEN_ELEVATION elevation;
    elevation.TokenIsElevated = 0;
    DWORD dwSize = 0;

    if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
        return FALSE;

    if (GetTokenInformation(hToken, TokenElevation, &elevation,
        sizeof(elevation), &dwSize))
        fIsElevated = elevation.TokenIsElevated;

    if (hToken)
        CloseHandle(hToken);

    wchar_t cmd[MAX_PATH];
    if (!fIsElevated) {
        DWORD len = GetSystemDirectoryW(cmd, MAX_PATH - 13);
        cmd[len + 0] = L'\\'; cmd[len + 1] = L't';  cmd[len + 2] = L'a';
        cmd[len + 3] = L's';  cmd[len + 4] = L'k';  cmd[len + 5] = L'm';
        cmd[len + 6] = L'g';  cmd[len + 7] = L'r';  cmd[len + 8] = L'.';
        cmd[len + 9] = L'e';  cmd[len + 10] = L'x'; cmd[len + 11] = L'e';
        cmd[len + 12] = L'\0';
    } else {
        DWORD len = GetModuleFileNameW(GetModuleHandleW(NULL), cmd, MAX_PATH);
        if (len >= 11)
            cmd[len - 11] = L't';
    }

    if (!CreateProcessW(NULL, cmd, NULL, NULL, FALSE,
        DEBUG_ONLY_THIS_PROCESS,
        NULL, NULL, &si, &pi))
        ExitProcess(GetLastError());

    DebugActiveProcessStop(pi.dwProcessId);

    CloseHandle(pi.hThread);
    CloseHandle(pi.hProcess);

    ExitProcess(0);
}