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- 2021-4-16
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- 2024-3-8
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编程入门
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大家都知道,WMI(Windows Management Instrumentation,Windows 管理规范)是一项核心的 Windows 管理技术;用户可以使用 WMI 管理本地和远程计算机,在这里只讨论它的硬件信息管理功能。
所有硬件设备的信息要能被WMI收集,其编写的驱动程序必须符合WMI规范,即WMI相当于这些硬件信息的管理员。通过IRPTrace这个工具可以很方便看到,当ring3有读取硬件序列号的动作,传到ring0层是这样:WMIDataDevice内核设备会收到一个名叫IRP_MJ_SYSTEM_CONTROL的通知,当然该通知还会附加着一个类似于IRP_MN_QUERY_ALL_DATA的通知。只要有一定驱动编程基础的人都知道,该通知会层层传递下去,得到结果后返回上来。
所以,我的拦截思路很简单,编写一个过滤驱动设备,附载在WMIDataDevice内核设备上,我的过滤驱动只对IRP_MJ_SYSTEM_CONTROL进行过滤:
- NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath)
- {
- .................
- for (i = 0; i < IRP_MJ_MAXIMUM_FUNCTION; i++) {
- DriverObject->MajorFunction[i] = LS2capDispatchGeneral;
- }
- // Our read function is where we do our real work.
- DriverObject->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = LS2DispatchSystemControl;
- return LS2capInit( DriverObject );
- }
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然后再设置完成例程,目的是等该通知取到序列号后可以拦截并任意修改序列号。
主要就是编写
- NTSTATUS LS2DispatchSystemControl(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
- {
- ....
- }
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例程。
代码如下:
- NTSTATUS LS2DispatchSystemControl(IN PDEVICE_OBJECT DeviceObject,IN PIRP Irp)
- {
- //PAGED_CODE();
- PIO_STACK_LOCATION currentIrpStack;
- PIO_STACK_LOCATION nextIrpStack;
- NTSTATUS status ;
- PDEVICE_EXTENSION devExt;
- UCHAR minorFunc;
- PIO_STACK_LOCATION IrpSp;
- char teststr2[34]="IRP_MN_QUERY_ALL_DATA";
- char teststr3[34]="IRP_MN_QUERY_SINGLE_INSTANCE";
- char teststr0[34]="NOTHING";
- IrpSp = IoGetCurrentIrpStackLocation( Irp );
- devExt = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
- status = STATUS_SUCCESS ;
- minorFunc = IrpSp->MinorFunction;
- switch(minorFunc)
- {
- case IRP_MN_QUERY_ALL_DATA:
- devExt->controlcode=2;
- currentIrpStack = IoGetCurrentIrpStackLocation(Irp);
- nextIrpStack = IoGetNextIrpStackLocation(Irp);
- *nextIrpStack = *currentIrpStack;
- IoSetCompletionRoutine( Irp, Ctrl2capWMIComplete,
- DeviceObject, TRUE, TRUE, TRUE );
- WriteFileTest(teststr2,34);
- break;
- case IRP_MN_QUERY_SINGLE_INSTANCE:
- devExt->controlcode=3;
- currentIrpStack = IoGetCurrentIrpStackLocation(Irp);
- nextIrpStack = IoGetNextIrpStackLocation(Irp);
- *nextIrpStack = *currentIrpStack;
- IoSetCompletionRoutine( Irp, Ctrl2capWMIComplete,
- DeviceObject, TRUE, TRUE, TRUE );
- WriteFileTest(teststr3,34);
- break;
- case IRP_MN_REGINFO:
- case IRP_MN_REGINFO_EX:
- case IRP_MN_CHANGE_SINGLE_INSTANCE:
- case IRP_MN_CHANGE_SINGLE_ITEM:
- case IRP_MN_EXECUTE_METHOD:
- case IRP_MN_DISABLE_EVENTS:
- case IRP_MN_ENABLE_COLLECTION:
- case IRP_MN_DISABLE_COLLECTION:
- case IRP_MN_ENABLE_EVENTS:
- default:
- #if WIN2K
- IoSkipCurrentIrpStackLocation(Irp);
- #else // WIN2K
- //
- // This is the equivalent of the IoSkipCurrentIrpStackLocation macro,
- // which doesn't exist in the NT 4 DDK.
- //
- Irp->CurrentLocation++;
- Irp->Tail.Overlay.CurrentStackLocation++;
- #endif // WIN2K
- WriteFileTest(teststr0,34);
- return IoCallDriver(((PDEVICE_EXTENSION) DeviceObject->DeviceExtension)->TopOfStack, Irp);
- break;
- }
- // 完成IRP
- /*
- Irp->IoStatus.Status = status;
- Irp->IoStatus.Information = 0; // bytes xfered
- IoCompleteRequest( Irp, IO_NO_INCREMENT ); //结束IRP请求,即不再往下传递
- return status;
- */
- return IoCallDriver( devExt->TopOfStack, Irp );
- }
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为了方便检测是否过滤成功,可以创建一个文本文件,并往里写入标记。本人已实现对硬盘,主板,MAC地址等读取拦截。主要思路和代码就是这些,请各位多多指教。
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