1. #define OBJECT_TO_OBJECT_HEADER(o) CONTAINING_RECORD((o),OBJECT_HEADER,Body)
   
2. POBJECT_HEADER addrs=NULL;
3. POBJECT_TYPE pType= NULL;

1. addrs=OBJECT_TO_OBJECT_HEADER(pObject);//获取对象头
2. 
   

1. pType=addrs->Type;//获取对象类型结构 object-10h
2. OldParseProcedure = pType->TypeInfo.ParseProcedure;//获取服务函数原始地址OBJECT_TYPE+9C位置为打开

//PVOID oldParseProcedure;
//typedef int (*FP_CALC)(int, int);
NTSTATUS (*oldParseProcedure)(IN PVOID ParseObject,
	IN PVOID ObjectType,
	IN OUT PACCESS_STATE AccessState,
	IN KPROCESSOR_MODE AccessMode,
	IN ULONG Attributes,
	IN OUT PUNICODE_STRING CompleteName,
	IN OUT PUNICODE_STRING RemainingName,
	IN OUT PVOID Context OPTIONAL,
	IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
	OUT PVOID *Object);
VOID MyObjectHook()
{
	UNICODE_STRING uFileName;
	OBJECT_ATTRIBUTES ob;
	NTSTATUS status;
	HANDLE hFile;
	IO_STATUS_BLOCK ioStaBlock;
	PVOID pObject;
	POBJECT_HEADER addr;
	POBJECT_TYPE pType;
	OBJECT_TYPE_INITIALIZER  obTypeInit;
	KIRQL irql;
	dprintf("enter myObjectHook...\n");
	DbgBreakPoint();
	RtlInitUnicodeString(&uFileName,L"\\Device\\HarddiskVolume1\\123.txt");//这个文件必需存在
	InitializeObjectAttributes(&ob,&uFileName,OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE ,NULL, NULL);
	status = ZwOpenFile(&hFile,GENERIC_ALL,&ob,&ioStaBlock,0,FILE_NON_DIRECTORY_FILE);
	if (!NT_SUCCESS(status))
	{
		dprintf("ZwOpenFile error..\n");
		return ;
	}
	status = ObReferenceObjectByHandle(hFile,GENERIC_ALL,NULL,KernelMode,&pObject,NULL);
	if (!NT_SUCCESS(status))
	{
		dprintf("ObReferenceObjectByHandle:Object is Null\n");
		return ;
	}
	dprintf("pObject is 0x%08X\n",pObject);
	addr = OBJECT_TO_OBJECT_HEADER(pObject);
	dprintf("addr is 0x%08X\n",addr);  //这里是pObject-0x18的位置
	pType = addr->Type;
	dprintf("pType is 0x%08X\n",pType);  
	//oldParseProcedure = (PVOID)(pType->TypeInfo.ParseProcedure);
	oldParseProcedure = pType->TypeInfo.ParseProcedure;
	dprintf("OldParseProcedure addrs is %08X\n",oldParseProcedure);
	//HOOK 一下下
	irql =  WPOFF();
	pType->TypeInfo.ParseProcedure = NewParseProcedure;//hook
	WPON(irql);
	//关闭句柄 
	ZwClose(hFile);
}
//OBJECT HOOK 函数
NTSTATUS NewParseProcedure(IN PVOID ParseObject,
	IN PVOID ObjectType,
	IN OUT PACCESS_STATE AccessState,
	IN KPROCESSOR_MODE AccessMode,
	IN ULONG Attributes,
	IN OUT PUNICODE_STRING CompleteName,
	IN OUT PUNICODE_STRING RemainingName,
	IN OUT PVOID Context OPTIONAL,
	IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
	OUT PVOID *Object)
{
	NTSTATUS status = STATUS_UNSUCCESSFUL;
	PVOID namePool;
	if (RemainingName->Buffer)
	{
		namePool = ExAllocatePool(NonPagedPool, RemainingName->Buffer+2);
		RtlZeroMemory(namePool, RemainingName->Buffer+2);
		if (namePool)
		{
			RtlCopyMemory(namePool, RemainingName->Buffer,RemainingName->Length);
			_wcsupr((wchar_t*)namePool);
			if (wcsstr(namePool, L"TEST.TXT"))
			{
				ExFreePool(namePool);
				return STATUS_ACCESS_DENIED;
			}
		}
	}
	return oldParseProcedure(ParseObject, 
							ObjectType,
							AccessState,
							AccessMode,
							Attributes,
							CompleteName,
							RemainingName,
							Context,
							SecurityQos,
							*Object);
}

//object hook
VOID MyObjectHook();
#define OBJECT_TO_OBJECT_HEADER(o)\
	CONTAINING_RECORD((o),OBJECT_HEADER,Body)
typedef struct _OBJECT_HEADER {
	LONG PointerCount;
	union {
		LONG HandleCount;
		PSINGLE_LIST_ENTRY SEntry;
	};
	POBJECT_TYPE Type;
	UCHAR NameInfoOffset;
	UCHAR HandleInfoOffset;
	UCHAR QuotaInfoOffset;
	UCHAR Flags;
	union
	{
		PVOID ObjectCreateInfo;
		PVOID QuotaBlockCharged;
	};
	PSECURITY_DESCRIPTOR SecurityDescriptor;
	QUAD Body;
} OBJECT_HEADER, *POBJECT_HEADER;
NTSTATUS NewParseProcedure(IN PVOID ParseObject,
	IN PVOID ObjectType,
	IN OUT PACCESS_STATE AccessState,
	IN KPROCESSOR_MODE AccessMode,
	IN ULONG Attributes,
	IN OUT PUNICODE_STRING CompleteName,
	IN OUT PUNICODE_STRING RemainingName,
	IN OUT PVOID Context OPTIONAL,
	IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
	OUT PVOID *Object);