Best VMT hooking class ever

#pragma once
#include "Include.h"

class VMTHook
{
    static int Unprotect(void* region)
    {
        MEMORY_BASIC_INFORMATION mbi;
        VirtualQuery((LPCVOID)region, &mbi, sizeof(mbi));
        VirtualProtect(mbi.BaseAddress, mbi.RegionSize, PAGE_READWRITE, &mbi.Protect);
        return mbi.Protect;
    }

    static void Protect(void* region, int protection)
    {
        MEMORY_BASIC_INFORMATION mbi;
        VirtualQuery((LPCVOID)region, &mbi, sizeof(mbi));
        VirtualProtect(mbi.BaseAddress, mbi.RegionSize, protection, &mbi.Protect);
    }

    public:

    /*
    * pObjectInstance: pointer to an pObjectInstance of a class
    * hookFn: function to overwrite with
    * methodOffset: 0 = method 1, 1 = method 2 etc...
    * return: original function
    */

    static void* Install(void* pObjectInstance, void* hookFn, int methodOffset)
    {
        intptr_t vtable = *((intptr_t*)pObjectInstance);
        intptr_t entry = vtable + sizeof(intptr_t) * methodOffset;
        intptr_t original = *((intptr_t*)entry);

        int originalProtection = Unprotect((void*)entry);
        *((intptr_t*)entry) = (intptr_t)hookFn;
        Protect((void*)entry, originalProtection);

        return (void*)original;
    }
};