// A function that compares the input serial with the generated serial
int verify_serial(const char *name, const char *serial)
{
char expected[64];
gen_expected_serial(name, expected, sizeof(expected));
// Here we do a simple comparison (case sensitive)
if (_stricmp(expected, serial) == 0) return 1;
return 0;
}

// A function that simulates simple integrity
// Here we just check that the exe path has a certain length (example)
int integrity_ok()
{
char path[MAX_PATH];
if (GetModuleFileNameA(NULL, path, MAX_PATH) == 0) return 0;
size_t L = strlen(path);
// Simulation: throw an error if the path length is too short or too long
if (L < 5) return 0;
return 1;
}

// Main window and message processing
LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_CREATE:
{
// A label and a field for the name
CreateWindowA("static", "Name:", WS_VISIBLE | WS_CHILD, 10, 10, 50, 20, hWnd, NULL, NULL, NULL);
CreateWindowA("edit", "", WS_CHILD | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL,
70, 10, 240, 22, hWnd, (HMENU)IDC_NAME, NULL, NULL);

// Label and serial field
CreateWindowA("static", "Serial:", WS_VISIBLE | WS_CHILD, 10, 40, 50, 20, hWnd, NULL, NULL, NULL);
CreateWindowA("edit", "", WS_CHILD | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL,
70, 40, 240, 22, hWnd, (HMENU)IDC_SERIAL, NULL, NULL);

// Activate button
CreateWindowA("button", "Activate & Play", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
110, 80, 120, 30, hWnd, (HMENU)IDC_BUTTON, NULL, NULL);
break;
}
case WM_COMMAND:
{
if (LOWORD(wParam) == IDC_BUTTON)
{
// Cancel if debugger
if (IsDebuggerPresent()) {
MessageBoxA(hWnd, "Activation failed: debugger detected.", "Error", MB_OK | MB_ICONERROR);
break;
}

// Simple integrity
if (!integrity_ok()) {
MessageBoxA(hWnd, "Activation failed: integrity check failed.", "Error", MB_OK | MB_ICONERROR);
break;
}

// Get text from controls
char name[128] = {0};
char serial[128] = {0};
HWND hName = GetDlgItem(hWnd, IDC_NAME);
HWND hSerial = GetDlgItem(hWnd, IDC_SERIAL);
GetWindowTextA(hName, name, sizeof(name));
GetWindowTextA(hSerial, serial, sizeof(serial));

// Remove leading/trailing whitespace
if (strlen(name) == 0) {
MessageBoxA(hWnd, "Please enter your name first.", "Info", MB_OK | MB_ICONINFORMATION);
break;
}
if (strlen(serial) == 0) {
MessageBoxA(hWnd, "Please enter serial.", "Info", MB_OK | MB_ICONINFORMATION);
break;
}

// Verify serial
if (verify_serial(name, serial)) {
MessageBoxA(hWnd, "Activation successful! Playing...", "OK", MB_OK | MB_ICONINFORMATION);
} else {
MessageBoxA(hWnd, "Invalid serial!", "Error", MB_OK | MB_ICONERROR);
}
}
break;
}
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProcA(hWnd, msg, wParam, lParam);
}
return 0;
}

// Windows application entry point
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
// Create window class
WNDCLASSA wc = {0};
wc.lpfnWndProc = WndProc;
wc.hInstance = hInstance;
wc.lpszClassName = "HotspotSimClass";
     wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
     wc.hCursor = LoadCursor(NULL, IDC_ARROW);

     if (!RegisterClassA(&wc)) return -1;

     // Create the window
     HWND hWnd = CreateWindowA("HotspotSimClass", "Hotspot Player (Simulated - Native)",
                               WS_OVERLAPPED |  WS_CAPTION |  WS_SYSMENU |  WS_MINIMIZEBOX,
                               CW_USEDEFAULT, CW_USEDEFAULT, 340, 160, NULL, NULL, hInstance, NULL);
     if (!hWnd) return -1;

     ShowWindow(hWnd, nCmdShow);
     UpdateWindow(hWnd);

     // Simple message loop
     msg msg;
     while (GetMessageA(&msg, NULL, 0, 0)) {
         translateMessage(&msg);
         DispatchMessageA(&msg);
     }

     return (int)msg.wParam;
}


#include <stdio.h>
#include <stdint.h>
#include <string.h>

// تولید سریال مثل gen_expected_serial در باینری
void gen_expected_serial(const char *name, char *out, size_t outlen)
{
uint64_t s = 0;
// s = s*31 + ch
for (size_t i = 0; i < strlen(name); ++i) {
unsigned char ch = (unsigned char)name[i];
s = s * 31 + ch;
}
unsigned g1 = (unsigned)((s ^ 0xA5A5A5A5ULL) & 0xFFFF);
unsigned g2 = (unsigned)(((s >> 3) ^ 0x5A5A5A5AULL) & 0xFFFF);
unsigned g3 = (unsigned)(((s << 7) ^ 0x3C3C3C3CULL) & 0xFFFF);

// فرمت AAAA-BBBB-CCCC (حروف بزرگ هگز)
snprintf(out, outlen, "%04X-%04X-%04X", g1, g2, g3);
}

int main(int argc, char **argv)
{
char name[256] = {0};
char serial[64] = {0};

if (argc >= 2) {
strncpy(name, argv[1], sizeof(name)-1);
} else {
printf("Enter name: ");
if (!fgets(name, sizeof(name), stdin)) return 1;
name[strcspn(name, "\r\n")] = 0;
}

if (strlen(name) == 0) {
fprintf(stderr, "Name is empty\n");
return 1;
}

gen_expected_serial(name, serial, sizeof(serial));
printf("Name: %s\nSerial: %s\n", name, serial);
return 0;
}

gcc hotspot_sim.c -o hotspot_sim.exe -mwindows

gcc gen_serial.c -o gen_serial.exe

#include <stdio.h>
#include <stdint.h>
#include <string.h>

// Generate serial like gen_expected_serial in binary
void gen_expected_serial(const char *name, char *out, size_t outlen)
{
uint64_t s = 0;
// s = s*31 + ch
for (size_t i = 0; i < strlen(name); ++i) {
unsigned char ch = (unsigned char)name[i];
s = s * 31 + ch;
}
unsigned g1 = (unsigned)((s ^ 0xA5A5A5A5ULL) & 0xFFFF);
unsigned g2 = (unsigned)(((s >> 3) ^ 0x5A5A5A5AULL) & 0xFFFF);
unsigned g3 = (unsigned)(((s << 7) ^ 0x3C3C3C3CULL) & 0xFFFF);

// format AAAA-BBBB-CCCC (hex uppercase letters)
snprintf(out, outlen, "%04X-%04X-%04X", g1, g2, g3);
}

int main(int argc, char **argv)
{
char name[256] = {0};
char serial[64] = {0};

if (argc >= 2) {
strncpy(name, argv[1], sizeof(name)-1);
} else {
printf("Enter name: ");
if (!fgets(name, sizeof(name), stdin)) return 1;
name[strcspn(name, "\r\n")] = 0;
}

if (strlen(name) == 0) {
fprintf(stderr, "Name is empty\n");
return 1;
}

gen_expected_serial(name, serial, sizeof(serial));
printf("Name: %s\nSerial: %s\n", name, serial);
return 0;
}

gcc hotspot_sim.c -o hotspot_sim.exe -mwindows

gcc gen_serial.c -o gen_serial.exe