Win64 驱动内核编程-11.回调监控进线程句柄操作

无HOOK监控进线程句柄操作

         

        在 NT5 平台下，要监控进线程句柄的操作。

  通常要挂钩三个API：NtOpenProcess、NtOpenThread、NtDuplicateObject。但是在 VISTA SP1 以及之后的系统中，我们可以完全抛弃 HOOK 方案了，转而使用一个标准的 API：ObRegisterCallbacks。下面做一个监视进线程句柄操作的程序，并实现保护名为 CALC.EXE 的进程不被结束。

    首先介绍一下 ObRegisterCallbacks 这个函数。此函数的前缀是Ob，看得出它是属于对象管理器的函数，Register 是注册，Callbacks 是回调（复数）。

    因此从字面意思上看，它是注册一个对象回调的意思。现在它只能监控进程对象和线程对象。但微软承诺会给此函数增加功能，实现对其它内核对象的监控。这个函数在不能合法进行内核挂钩的 WIN64 上特别有用，但是微软做了一个很扯淡的限制： 驱动程序必须有数字签名才能使用 此函数。不过国外的黑客对此限制很不爽，他们通过逆向 ObRegisterCallbacks，找到了破解这个限制的方法。经研究，内核通过 MmVerifyCallbackFunction 验证此回调是否合法，但此函数只是简单的验证了一下 DriverObject->DriverSection->Flags 的值是不是为 0x20：所以可以简单破解掉这个限制：

X32typedef struct _LDR_DATA_TABLE_ENTRY32{LIST_ENTRY32 InLoadOrderLinks;LIST_ENTRY32 InMemoryOrderLinks;LIST_ENTRY32 InInitializationOrderLinks;ULONG DllBase;ULONG EntryPoint;ULONG SizeOfImage;UNICODE_STRING32 FullDllName;UNICODE_STRING32 BaseDllName;ULONG Flags;USHORT LoadCount;USHORT TlsIndex;union {LIST_ENTRY32 HashLinks;struct {ULONG SectionPointer;ULONG  CheckSum;};};union {struct {ULONG  TimeDateStamp;};struct {ULONG LoadedImports;};};} LDR_DATA_TABLE_ENTRY32, *PLDR_DATA_TABLE_ENTRY32;PLDR_DATA_TABLE_ENTRY32 ldr;ldr = (PLDR_DATA_TABLE_ENTRY32)(pDriverObj->DriverSection);ldr->Flags |= 0x20;X64typedef struct _LDR_DATA_TABLE_ENTRY64{LIST_ENTRY64    InLoadOrderLinks;LIST_ENTRY64    InMemoryOrderLinks;LIST_ENTRY64    InInitializationOrderLinks;PVOID            DllBase;PVOID            EntryPoint;ULONG            SizeOfImage;UNICODE_STRING    FullDllName;UNICODE_STRING     BaseDllName;ULONG            Flags;USHORT            LoadCount;USHORT            TlsIndex;PVOID            SectionPointer;ULONG            CheckSum;PVOID            LoadedImports;PVOID            EntryPointActivationContext;PVOID            PatchInformation;LIST_ENTRY64    ForwarderLinks;LIST_ENTRY64    ServiceTagLinks;LIST_ENTRY64    StaticLinks;PVOID            ContextInformation;ULONG64            OriginalBase;LARGE_INTEGER    LoadTime;} LDR_DATA_TABLE_ENTRY64, *PLDR_DATA_TABLE_ENTRY64;PLDR_DATA_TABLE_ENTRY64 ldr;ldr = (PLDR_DATA_TABLE_ENTRY64)(pDriverObj->DriverSection);ldr->Flags |= 0x20;

    上面代码如果是用于商业或者其他正当场合，注意要好好测试下，我是在网上找了到了那个结构体定义，然后自己在win7 32和win764位机器上测试了一下，没问题。小伙伴记得好好测试其他系统再用。然后就是来两个回调函数，一个是进程回调，一个是线程回调：

NTKERNELAPI PEPROCESS IoThreadToProcess(PETHREAD Thread);NTKERNELAPI char* PsGetProcessImageFileName(PEPROCESS Process);BOOLEAN IsProtectedProcessName(PEPROCESS eprocess){char *Name=PsGetProcessImageFileName(eprocess);if(!_stricmp("calc.exe",Name))return TRUE;elsereturn FALSE;}PVOID obHandle=NULL,obHandle2=NULL;OB_PREOP_CALLBACK_STATUS preCall(PVOID RegistrationContext, POB_PRE_OPERATION_INFORMATION pOperationInformation){#define PROCESS_TERMINATE 0x1HANDLE pid;if(pOperationInformation->ObjectType!=*PsProcessType)goto exit_sub;pid = PsGetProcessId((PEPROCESS)pOperationInformation->Object);DbgPrint("[OBCALLBACK][Process]PID=%ld\n",pid);UNREFERENCED_PARAMETER(RegistrationContext);if( IsProtectedProcessName((PEPROCESS)pOperationInformation->Object) ){if (pOperationInformation->Operation == OB_OPERATION_HANDLE_CREATE){//pOperationInformation->Parameters->CreateHandleInformation.DesiredAccess=0;if ((pOperationInformation->Parameters->CreateHandleInformation.OriginalDesiredAccess & PROCESS_TERMINATE) == PROCESS_TERMINATE)            {                pOperationInformation->Parameters->CreateHandleInformation.DesiredAccess &= ~PROCESS_TERMINATE;            }}if(pOperationInformation->Operation == OB_OPERATION_HANDLE_DUPLICATE){//pOperationInformation->Parameters->DuplicateHandleInformation.DesiredAccess=0;if ((pOperationInformation->Parameters->DuplicateHandleInformation.OriginalDesiredAccess & PROCESS_TERMINATE) == PROCESS_TERMINATE)            {                pOperationInformation->Parameters->DuplicateHandleInformation.DesiredAccess &= ~PROCESS_TERMINATE;            }}}exit_sub:return OB_PREOP_SUCCESS;}OB_PREOP_CALLBACK_STATUS preCall2(PVOID RegistrationContext, POB_PRE_OPERATION_INFORMATION pOperationInformation){#define THREAD_TERMINATE2 0x1PEPROCESS ep;PETHREAD et;HANDLE pid;if(pOperationInformation->ObjectType!=*PsThreadType)goto exit_sub;et=(PETHREAD)pOperationInformation->Object;ep=IoThreadToProcess(et);pid = PsGetProcessId(ep);DbgPrint("[OBCALLBACK][Thread]PID=%ld; TID=%ld\n",pid,PsGetThreadId(et));UNREFERENCED_PARAMETER(RegistrationContext);if( IsProtectedProcessName(ep) ){if (pOperationInformation->Operation == OB_OPERATION_HANDLE_CREATE){//pOperationInformation->Parameters->CreateHandleInformation.DesiredAccess=0;if ((pOperationInformation->Parameters->CreateHandleInformation.OriginalDesiredAccess & THREAD_TERMINATE2) == THREAD_TERMINATE2)            {                pOperationInformation->Parameters->CreateHandleInformation.DesiredAccess &= ~THREAD_TERMINATE2;            }}if(pOperationInformation->Operation == OB_OPERATION_HANDLE_DUPLICATE){//pOperationInformation->Parameters->DuplicateHandleInformation.DesiredAccess=0;if ((pOperationInformation->Parameters->DuplicateHandleInformation.OriginalDesiredAccess & THREAD_TERMINATE2) == THREAD_TERMINATE2)            {                pOperationInformation->Parameters->DuplicateHandleInformation.DesiredAccess &= ~THREAD_TERMINATE2;            }}}exit_sub:return OB_PREOP_SUCCESS;}然后就是在驱动里注册/卸载这两个回调函数：NTSTATUS ObProtectProcess(BOOLEAN Enable){if(Enable==TRUE){NTSTATUS obst1=0,obst2=0;OB_CALLBACK_REGISTRATION obReg,obReg2;OB_OPERATION_REGISTRATION opReg,opReg2;//reg ob callback 1memset(&obReg, 0, sizeof(obReg));obReg.Version = ObGetFilterVersion();obReg.OperationRegistrationCount = 1;obReg.RegistrationContext = NULL;RtlInitUnicodeString(&obReg.Altitude, L"321124");obReg.OperationRegistration = &opReg;memset(&opReg, 0, sizeof(opReg));opReg.ObjectType = PsProcessType;opReg.Operations = OB_OPERATION_HANDLE_CREATE | OB_OPERATION_HANDLE_DUPLICATE;opReg.PreOperation = (POB_PRE_OPERATION_CALLBACK)&preCall;obst1=ObRegisterCallbacks(&obReg, &obHandle);//reg ob callback 2memset(&obReg2, 0, sizeof(obReg2));obReg2.Version = ObGetFilterVersion();obReg2.OperationRegistrationCount = 1;obReg2.RegistrationContext = NULL;RtlInitUnicodeString(&obReg2.Altitude, L"321125");obReg2.OperationRegistration = &opReg2;memset(&opReg2, 0, sizeof(opReg2));opReg2.ObjectType = PsThreadType;opReg2.Operations = OB_OPERATION_HANDLE_CREATE | OB_OPERATION_HANDLE_DUPLICATE;opReg2.PreOperation = (POB_PRE_OPERATION_CALLBACK)&preCall2;obst1=ObRegisterCallbacks(&obReg2, &obHandle2);return NT_SUCCESS(obst1) & NT_SUCCESS(obst2);}else{if(obHandle!=NULL)ObUnRegisterCallbacks(obHandle);if(obHandle2!=NULL)ObUnRegisterCallbacks(obHandle2);return TRUE;}}执行结果：