//DumpKeyToConsole.dll - extracts the key from keydat and prints it to the console.

#include <Windows.h>
#include <string>

using namespace std;

typedef char* (__cdecl* GetKeyFromDatFn)(char key[]);
static GetKeyFromDatFn GetKeyFromDat;

typedef void (__cdecl *PrintfFn)(const char* format, ...);
static PrintfFn PrintToConsole;

bool DataCmp(const BYTE* data, const BYTE* mask, const char* mask_char)
{
    for(; *mask_char; ++mask_char, ++data, ++mask)
    {
        if(*mask_char == 'x' && *data != *mask)
        {
            return false;
        }
    }
    return (*mask_char) == NULL;
}

DWORD FindPattern(DWORD Addr, DWORD Len, BYTE* mask, char* mask_char)
{
    for(DWORD i = NULL; i < Len; i++)
    {
        if(DataCmp((BYTE*)(Addr + i), mask, mask_char))
        {
            return (DWORD)(Addr + i);
        }
    }
    return 0;
}

DWORD BLSigScan(char* pattern, char* mask)
{
    static DWORD ClientBase = (DWORD)GetModuleHandleA("Blockland.exe");
    if(ClientBase == NULL)
    {
        return -1;
    }
    return FindPattern(ClientBase, 0x640000, (PBYTE)pattern, mask);
}

DWORD WINAPI Initialize(LPVOID Args)
{
    PrintToConsole = (PrintfFn)BLSigScan("\x8B\x4C\x24\x04\x8D\x44\x24\x08\x50\x6A\x00\x6A\x00\xE8\x00\x00\x00\x00\x83\xC4\x0C\xC3", "xxxxxxxxxxxxxx????xxxx");
    GetKeyFromDat = (GetKeyFromDatFn)BLSigScan("\x55\x8B\xEC\x83\xE4\xF8\xB8\x00\x00\x00\x00\xE8\x00\x00\x00\x00\xA1\x00\x00\x00\x00\x8B\x0D\x00\x00\x00\x00\x33\xC5\x53\x89\x84\x24\x00\x00\x00\x00\xA1\x00\x00\x00\x00\x56\x8B\x75\x08", "xxxxxxx????x????x????xx????xxxxxx????x????xxxx");

    char buffer[17];

    GetKeyFromDat(buffer);

    PrintToConsole("Your key is: %s", buffer);

    return 0;
}

int WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)
{
    if(dwReason == DLL_PROCESS_ATTACH)
    {
        CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)Initialize, NULL, 0, NULL);
    }
    return true;
}