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namespace nvidia_ctx
{
#define NV_MAX_DEVICES 32
 
	uint64_t g_system{};
 
	FORCEINLINE BOOLEAN init(void)
	{
		uint64_t nvlddmkm_base = kernel::find_driver(_x(nvlddmkm.sys));
 
		g_system = *(uint64_t*)(nvlddmkm_base + 0xB93D40); // 48 8B 05 ? ? ? ? 4C 8B F2 44 8B E9
 
		return (g_system != 0);
	}
 
	FORCEINLINE uint64_t gpu_data(uint32_t gpu_instance)
	{
		uint64_t gpu_sys = *(uint64_t*)(g_system + 0x1C0);
		uint64_t gpu_mgr = *(uint64_t*)(gpu_sys + 0x3CAD0);
 
		if (!gpu_mgr)
			return 0;
 
		gpu_sys += 0x3C8D0;
 
		uint64_t gpu_device{};
 
		while (1)
		{
			uint32_t found_instance = *(uint32_t*)(gpu_sys + 0x8);
 
			if (found_instance == gpu_instance)
			{
				uint64_t device = *(uint64_t*)gpu_sys;
 
				if (device != 0)
					gpu_device = device;
 
				break;
			}
 
			gpu_sys += 0x10;
		}
 
		return gpu_device;
	}
 
	FORCEINLINE uint64_t next_gpu(uint32_t device_mask, uint32_t* start_index)
	{
		if (*start_index >= NV_MAX_DEVICES)
			return 0;
 
		for (uint32_t i = *start_index; i  NV_MAX_DEVICES; ++i)
		{
			if (device_mask & (1U  i))
			{
				*start_index = i + 1;
				return gpu_data(i);
			}
		}
 
		*start_index = NV_MAX_DEVICES;
 
		return 0;
	}
 
	FORCEINLINE BOOLEAN change_uuid(uint64_t gpu_object)
	{
		if (*(uint8_t*)(gpu_object + 0x848))
		{
			uint8_t* uuid_data = (uint8_t*)(gpu_object + 0x849);
 
			// randomize your GPU UUID here
			uuid_data[0] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[1] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[2] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[3] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[4] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[5] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[6] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[7] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[8] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[9] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[10] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[11] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[12] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[13] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[14] = wp::rand_betweenuint8_t>(0x01, 0xFF);
			uuid_data[15] = wp::rand_betweenuint8_t>(0x01, 0xFF);
 
			return TRUE;
		}
		else
		{
			DBG_LOG(device hasnt been initialized yet!);
		}
 
		return FALSE;
	}
 
	FORCEINLINE BOOLEAN spoof_gpu(void)
	{
		BOOLEAN status = FALSE;
		uint64_t gpu_sys = *(uint64_t*)(g_system + 0x1C0);
 
		if (!gpu_sys)
			return status;
 
		uint32_t gpu_index{},
			gpu_mask = *(uint32_t*)(gpu_sys + 0x754);
 
		// loops through all available GPUs (limited to NV_MAX_DEVICES)
		while (1)
		{
			uint64_t gpu_object = next_gpu(gpu_mask, &gpu_index);
 
			if (!gpu_object)
				break;
 
			if (change_uuid(gpu_object))
				status = TRUE;
			else
				status = FALSE;
		}
 
		return status;
	}
}
 
// usage;
NTSTATUS driver_entry(...)
{
	// ...
	if (!nvidia_ctx::init())
	{
		DBG_LOG(failed initializing nvidia context!); // most likely wrong offset or no nvidia GPU/drivers installed
 
		return STATUS_UNSUCCESSFUL;
	}
 
	if (!nvidia_ctx::spoof_gpu())
	{
		DBG_LOG(failed spoofing gpu!);
 
		return STATUS_UNSUCCESSFUL;
	}
}

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