samp-server hook

#include <Windows.h>

unsigned long hk_addr, jmp_to;

void __declspec(naked) hk()
{
    __asm
    {
        push ebx
        push esi
        push edi
        mov eax, [ebp - 0x8]
        pushad
        pushfd
    }

    // отсюда нужно сделать вызов нашей функи Functions_Handler

    MessageBoxA(0, "Я в функе еее", "алферов сосет", MB_OK);

    __asm
    {
        popfd
        popad
        jmp jmp_to
    }
}

void create_jmp_hook(unsigned long addr, unsigned long dwJumpTo, unsigned int size)
{
    unsigned long old_protect;
    VirtualProtect((void*)addr, size, PAGE_EXECUTE_READWRITE, &old_protect);

    *reinterpret_cast<unsigned char*>(addr) = 0xE9;
    *reinterpret_cast<unsigned long*>(addr + 0x1) = dwJumpTo - addr - 0x5;

    for (unsigned long i = 0x5; i < size; i++)
        *reinterpret_cast<unsigned char*>(addr + i) = 0x90;

    VirtualProtect((void*)addr, size, old_protect, &old_protect);
}

bool DataCompare(const unsigned char* pData, const unsigned char* pattern, const char* mask)
{
    for (; *mask; ++mask, ++pData, ++pattern)
        if (*pData != *pattern)
            return false;
    return (*mask) == NULL;
}

unsigned long FindPattern(unsigned long start_address, unsigned char* pattern, char *mask)
{
    for (unsigned long i = 0;; i++)
        if (DataCompare((unsigned char*)(start_address + i), pattern, mask))
            return (unsigned long)(start_address + i);
    return NULL;
}

BOOL APIENTRY DllMain(HMODULE hModule, unsigned long ReasonForCall, void* lpReserved)
{
    if (ReasonForCall == DLL_PROCESS_ATTACH)
    {
        char mask[] = "xxxxxxxxxxxxxxxxxxxxxxx";
        hk_addr = FindPattern((unsigned long)GetModuleHandleA("samp-server.exe"), (unsigned char*)"\x53\x56\x57\x8B\x45\xF8\x89\x65\xE8\x50\x8B\x45\xFC\xC7\x45\xFC\xFF\xFF\xFF\xFF\x89\x45\xF8", mask);
        jmp_to = hk_addr + 6;
        if (hk_addr) create_jmp_hook(hk_addr, (unsigned long)hk, 6);
    }
    return TRUE;
}