在Windows NT中，80386保護模式的“保護”比Windows 95中更堅固，這個“鍍金的籠子”更加結實，更加難以打破。在Windows 95中，至少應用程序I/O操作是不受限制的，而在Windows NT中，我們的應用程序連這點權限都被剝奪了。在NT中幾乎不太可能進入真正的ring0層。? 在Windows NT中，存在三種Device Driver： ? 1．“Virtual device Driver” (VDD)。通過VDD，16位應用程序，如DOS 和Win16應用程序可以訪問特定的I/O端口（注意，不是直接訪問，而是要通過VDD來實現訪問）。 ? 2．“GDI Driver”，提供顯示和打印所需的GDI函數。 ? 3．“Kernel Mode Driver”，實現對特定硬件的操作，比如說CreateFile, CloseHandle (對于文件對象而言), ReadFile, WriteFile, DeviceIoControl 等操作。“Kernel Mode Driver”還是Windows NT中唯一可以對硬件中斷和DMA進行操作的Driver。SCSI 小端口驅動和 網卡NDIS 驅動都是Kernel Mode Driver的一種特殊形式。 Visual studio2012與Windows8帶來格外不同的新體驗 1.啟動Vs2012  2.看見滿目的驅動開發模板  3.選擇一個驅動模式，有內核模式與用戶模式兩種的驅動  ? 4.創建一個驅動程序，KMDF DriverMVP  ? 5.我們選擇的是內核模式的驅動程序，下面是創建成功后的界面，分別是驅動程序本身，與驅動安裝包  6.按下F5，選擇驅動編譯， ?  插入下列代碼實現內核的進程創建 ~~~ #include "ProcMon.h" #include "../inc/ioctls.h" // ////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////// // // 全局變量 // PDEVICE_OBJECT g_pDeviceObject; // ////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////// // // 函數實現 // NTSTATUS DriverEntry( IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath ) { NTSTATUS Status = STATUS_SUCCESS; UNICODE_STRING ntDeviceName; UNICODE_STRING dosDeviceName; UNICODE_STRING ProcessEventString; PDEVICE_EXTENSION deviceExtension; PDEVICE_OBJECT deviceObject = NULL; KdPrint(("[ProcMon] DriverEntry: %wZ\n", RegistryPath)); // // 創建設備對象 // RtlInitUnicodeString(&ntDeviceName, PROCMON_DEVICE_NAME_W); Status = IoCreateDevice( DriverObject, sizeof(DEVICE_EXTENSION), // DeviceExtensionSize &ntDeviceName, // DeviceName FILE_DEVICE_PROCMON, // DeviceType 0, // DeviceCharacteristics TRUE, // Exclusive &deviceObject // [OUT] ); if(!NT_SUCCESS(Status)) { KdPrint(("[ProcMon] IoCreateDevice Error Code = 0x%X\n", Status)); return Status; } // // 設置擴展結構 // deviceExtension = (PDEVICE_EXTENSION)deviceObject->DeviceExtension; // // Set up synchronization objects, state info,, etc. // deviceObject->Flags |= DO_BUFFERED_IO; // // 創建符號鏈接 // RtlInitUnicodeString(&dosDeviceName, PROCMON_DOS_DEVICE_NAME_W); Status = IoCreateSymbolicLink(&dosDeviceName, &ntDeviceName); if(!NT_SUCCESS(Status)) { KdPrint(("[ProcMon] IoCreateSymbolicLink Error Code = 0x%X\n", Status)); IoDeleteDevice(deviceObject); return Status; } // // 分發IRP // DriverObject->MajorFunction[IRP_MJ_CREATE] = ProcmonDispatchCreate; DriverObject->MajorFunction[IRP_MJ_CLOSE] = ProcmonDispatchClose; DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = ProcmonDispatchDeviceControl; DriverObject->DriverUnload = ProcmonUnload; // // 保存設備對象指針 // g_pDeviceObject = deviceObject; // // 創建事件對象與應用層通信 // RtlInitUnicodeString(&ProcessEventString, EVENT_NAME); deviceExtension->ProcessEvent = IoCreateNotificationEvent(&ProcessEventString, &deviceExtension->hProcessHandle); KeClearEvent(deviceExtension->ProcessEvent); // 非受信狀態 // // 設置回調例程 // Status = PsSetCreateProcessNotifyRoutine(ProcessCallback, FALSE); return Status; } NTSTATUS ProcmonDispatchCreate( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp ) { NTSTATUS Status = STATUS_SUCCESS; Irp->IoStatus.Information = 0; KdPrint(("[ProcMon] IRP_MJ_CREATE\n")); Irp->IoStatus.Status = Status; IoCompleteRequest(Irp, IO_NO_INCREMENT); return Status; } NTSTATUS ProcmonDispatchClose( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp ) { NTSTATUS Status = STATUS_SUCCESS; Irp->IoStatus.Information = 0; KdPrint(("[ProcMon] IRP_MJ_CLOSE\n")); Irp->IoStatus.Status = Status; IoCompleteRequest(Irp, IO_NO_INCREMENT); return Status; } NTSTATUS ProcmonDispatchDeviceControl( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp ) { NTSTATUS Status = STATUS_SUCCESS; PIO_STACK_LOCATION irpStack; PDEVICE_EXTENSION deviceExtension; ULONG inBufLength, outBufLength; ULONG ioControlCode; PCALLBACK_INFO pCallbackInfo; // 獲取當前設備棧 irpStack = IoGetCurrentIrpStackLocation(Irp); deviceExtension = (PDEVICE_EXTENSION)DeviceObject->DeviceExtension; // 提取信息 pCallbackInfo = Irp->AssociatedIrp.SystemBuffer; inBufLength = irpStack->Parameters.DeviceIoControl.InputBufferLength; outBufLength = irpStack->Parameters.DeviceIoControl.OutputBufferLength; ioControlCode = irpStack->Parameters.DeviceIoControl.IoControlCode; // 處理不同的IOCTL switch (ioControlCode) { case IOCTL_PROC_MON: { KdPrint(("[ProcMon] IOCTL: 0x%X", ioControlCode)); if (outBufLength >= sizeof(PCALLBACK_INFO)) { pCallbackInfo->hParentId = deviceExtension->hParentId; pCallbackInfo->hProcessId = deviceExtension->hProcessId; pCallbackInfo->bCreate = deviceExtension->bCreate; Irp->IoStatus.Information = outBufLength; } break; } default: { Status = STATUS_INVALID_PARAMETER; Irp->IoStatus.Information = 0; KdPrint(("[ProcMon] Unknown IOCTL: 0x%X (%04X,%04X)", \ ioControlCode, DEVICE_TYPE_FROM_CTL_CODE(ioControlCode), \ IoGetFunctionCodeFromCtlCode(ioControlCode))); break; } } Irp->IoStatus.Status = Status; IoCompleteRequest(Irp, IO_NO_INCREMENT); return Status; } VOID ProcmonUnload( IN PDRIVER_OBJECT DriverObject ) { UNICODE_STRING dosDeviceName; // // Free any resources // // 卸載回調例程 PsSetCreateProcessNotifyRoutine(ProcessCallback, TRUE); // // Delete the symbolic link // RtlInitUnicodeString(&dosDeviceName, PROCMON_DOS_DEVICE_NAME_W); IoDeleteSymbolicLink(&dosDeviceName); // // Delete the device object // IoDeleteDevice(DriverObject->DeviceObject); KdPrint(("[ProcMon] Unloaded")); } VOID ProcessCallback( IN HANDLE ParentId, // 父進程ID IN HANDLE ProcessId, // 發生事件的進程ID IN BOOLEAN Create // 進程是創建還是終止 ) { PDEVICE_EXTENSION deviceExtension = (PDEVICE_EXTENSION)g_pDeviceObject->DeviceExtension; deviceExtension->hParentId = ParentId; deviceExtension->hProcessId = ProcessId; deviceExtension->bCreate = Create; // 觸發事件，通知應用程序 KeSetEvent(deviceExtension->ProcessEvent, 0, FALSE); KeClearEvent(deviceExtension->ProcessEvent); } // ////////////////////////////////////////////////////////////////////////// ~~~ ring3實現應用層的調用，搞定進程創建的監視 ~~~ #include "windows.h" #include "winioctl.h" #include "stdio.h" #include "../inc/ioctls.h" #define SYMBOL_LINK "\\\\.\\ProcMon" //#define SYMBOL_LINK "\\\\.\\slNTProcDrv" int main() { CALLBACK_INFO cbkinfo, cbktemp = {0}; // 打開驅動設備對象 HANDLE hDriver = ::CreateFile( SYMBOL_LINK, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); if (hDriver == INVALID_HANDLE_VALUE) { printf("打開驅動設備對象失敗！\n"); return -1; } // 打開內核事件對象 HANDLE hProcessEvent = ::OpenEventW(SYNCHRONIZE, FALSE, EVENT_NAME); while (::WaitForSingleObject(hProcessEvent, INFINITE)) { DWORD dwRet; BOOL bRet; bRet = ::DeviceIoControl( hDriver, IOCTL_PROC_MON, NULL, 0, &cbkinfo, sizeof(cbkinfo), &dwRet, NULL); if (bRet) { if (cbkinfo.hParentId != cbktemp.hParentId || \ cbkinfo.hProcessId != cbktemp.hProcessId || \ cbkinfo.bCreate != cbktemp.bCreate) { if (cbkinfo.bCreate) { printf("有進程被創建，PID = %d\n", cbkinfo.hProcessId); } else { printf("有進程被終止，PID = %d\n", cbkinfo.hProcessId); } cbktemp = cbkinfo; } } else { printf("\n獲取進程信息失敗！\n"); break; } } ::CloseHandle(hDriver); return 0; } ~~~