用Visual studio11在Windows8上开发驱动实现注册表监控和过滤

用Visual studio11在Windows8上开发驱动实现注册表监控和过滤

在Windows NT中，80386保护模式的“保护”比Windows 95中更坚固，这个“镀金的笼子”更加结实，更加难以打破。在Windows 95中，至少应用程序I/O操作是不受限制的，而在Windows NT中，我们的应用程序连这点权限都被剥夺了。在NT中几乎不太可能进入真正的ring0层。

在Windows NT中，存在三种Device Driver：

1．“Virtual device Driver” (VDD)。通过VDD，16位应用程序，如DOS 和Win16应用程序可以访问特定的I/O端口（注意，不是直接访问，而是要通过VDD来实现访问）。

2．“GDI Driver”，提供显示和打印所需的GDI函数。

3．“Kernel Mode Driver”，实现对特定硬件的操作，比如说CreateFile, CloseHandle (对于文件对象而言), ReadFile, WriteFile, DeviceIoControl 等操作。“Kernel Mode Driver”还是Windows NT中唯一可以对硬件中断和DMA进行操作的Driver。SCSI 小端口驱动和 网卡NDIS 驱动都是Kernel Mode Driver的一种特殊形式。

Visual studio11与Windows8带来格外不同的新体验

1.启动Vs11

2.看见满目的驱动开发模板

3.选择一个驱动模式，有内核模式与用户模式两种的驱动

4.创建一个驱动程序，KMDF DriverMVP

5.我们选择的是内核模式的驱动程序，下面是创建成功后的界面，分别是驱动程序本身，与驱动安装包

6.按下F5，选择驱动编译，

插入下列代码实现基于callback的注册表监控和过滤技术，请见代码分析

#include "ntifs.h"#include "RegistryCallBack.h"#include NTSTATUS st;LARGE_INTEGER g_CallbackCookie;ANSI_STRING astr; VOID UnloadDriver(PDRIVER_OBJECT DriverObject);NTSTATUS RegistryCallback(IN PVOID CallbackContext, IN PVOID Argument1, IN PVOID Argument2);BOOLEAN GetRegistryObjectCompleteName(PUNICODE_STRING pRegistryPath, PUNICODE_STRING pPartialRegistryPath,PVOID pRegistryObject);NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegistryPath){ DbgPrint("[RegRoutine]Loading!\n"); DriverObject->DriverUnload = UnloadDriver; st = CmRegisterCallback(RegistryCallback,NULL,&g_CallbackCookie); if ( !NT_SUCCESS(st) ) { DbgPrint("[RegRoutine]CmRegisterCallback Failed!\n"); return st; } DbgPrint("[RegRoutine]RegistryCallback Addr:0x%08X\n",RegistryCallback); DbgPrint("[RegRoutine]Cookie.LowPart:0x%08X Cookie.HighPart:0x%08X\n",g_CallbackCookie.LowPart,g_CallbackCookie.HighPart); return st;}VOID UnloadDriver(PDRIVER_OBJECT DriverObject){ CmUnRegisterCallback(g_CallbackCookie); DbgPrint("[RegRoutine]UnLoading!\n");}NTSTATUS RegistryCallback( IN PVOID CallbackContext, IN PVOID Argument1, IN PVOID Argument2 ){ int type; BOOLEAN exception = FALSE; BOOLEAN registryEventIsValid = FALSE; UNICODE_STRING registryPath; UCHAR* registryData = NULL; ULONG registryDataLength = 0; ULONG registryDataType = 0; registryPath.Length = 0; registryPath.MaximumLength = NTSTRSAFE_UNICODE_STRING_MAX_CCH * sizeof(WCHAR); registryPath.Buffer = ExAllocatePoolWithTag(NonPagedPool, registryPath.MaximumLength, 'ConT'); if(registryPath.Buffer == NULL) { DbgPrint("[RegRoutine]Allocate registryPath failed!\n"); return STATUS_SUCCESS; } type = (REG_NOTIFY_CLASS)Argument1; try { switch(type) { case RegNtPostCreateKey: { PREG_POST_CREATE_KEY_INFORMATION createKey = (PREG_POST_CREATE_KEY_INFORMATION)Argument2; if( NT_SUCCESS(createKey->Status) || createKey->Status == STATUS_PENDING ) //创建注册表项状态为成功和未决的都记录一下 { PVOID* registryObject = createKey->Object; registryEventIsValid = GetRegistryObjectCompleteName(®istryPath, createKey->CompleteName,*registryObject); if ( registryEventIsValid ) { RtlUnicodeStringToAnsiString(&astr,®istryPath,TRUE); DbgPrint("[RegCreated]KeyName:%s!\n",astr.Buffer); //如果创建的是自启动项，则警告一下 if ( strstr(astr.Buffer,"\\REGISTRY\\MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run") ) { DbgPrint("[RegCreated]Forbin!\n"); DbgPrint("[RegCreated]ForbinKeyName:%s!\n",astr.Buffer); RtlFreeAnsiString(&astr); } RtlFreeAnsiString(&astr); } else DbgPrint("[RegCreated]Get Key Name Failed!\n"); } } break; //使用PreCreateKey可以阻止key的创建，但是能够作为判断依据的只有一个key的CompleteName，无法得到完整路径来判断 case RegNtPreCreateKey: { PREG_PRE_CREATE_KEY_INFORMATION createKey = (PREG_PRE_CREATE_KEY_INFORMATION)Argument2; RtlCopyUnicodeString(®istryPath,createKey->CompleteName); RtlUnicodeStringToAnsiString(&astr,®istryPath,TRUE); DbgPrint("[RegRoutine]PreCreate:%s!\n",astr.Buffer); if ( !strcmp(astr.Buffer,"新项 #1") ) { DbgPrint("[RegRoutine]Forbin!\n"); DbgPrint("[RegRoutine]ForbinKeyName:%s!\n",astr.Buffer); RtlFreeAnsiString(&astr); return STATUS_INVALID_PARAMETER; } RtlFreeAnsiString(&astr); } break; case RegNtDeleteKey: { PREG_DELETE_KEY_INFORMATION deleteKey = (PREG_DELETE_KEY_INFORMATION)Argument2; registryEventIsValid = GetRegistryObjectCompleteName(®istryPath, NULL, deleteKey->Object); if ( registryEventIsValid ) { RtlUnicodeStringToAnsiString(&astr,®istryPath,TRUE); DbgPrint("[RegDeletedKey]KeyName:%s!\n",astr.Buffer); if ( !strcmp(astr.Buffer,"\\REGISTRY\\MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\ljh00001") ) { DbgPrint("[RegDeletedKey]Forbin!\n"); DbgPrint("[RegDeletedKey]ForbinKeyName:%s!\n"); RtlFreeAnsiString(&astr); return STATUS_INVALID_PARAMETER; } RtlFreeAnsiString(&astr); } } break; case RegNtSetValueKey: { PREG_SET_VALUE_KEY_INFORMATION setvalue = (PREG_SET_VALUE_KEY_INFORMATION)Argument2; if( MmIsAddressValid(setvalue->ValueName) ) { registryEventIsValid = GetRegistryObjectCompleteName(®istryPath, NULL, setvalue->Object); if ( registryEventIsValid ) { RtlUnicodeStringToAnsiString(&astr,®istryPath,TRUE); DbgPrint("[RegSetValue]ValueParentPath:%s!\n",astr.Buffer); RtlFreeAnsiString(&astr); } RtlUnicodeStringToAnsiString(&astr,setvalue->ValueName,TRUE); DbgPrint("[RegSetValue]ValueName:%s!\n",astr.Buffer); RtlFreeAnsiString(&astr); //输出设置的键值的数据类型和大小，如果类型是REG_SZ则data是一个unicode_string，而数据大小为buffer长度 //加上4字节长度的length和MaxLength再加上2个字节的结尾00的长度 DbgPrint("[RegSetValue]ValueDataType:%X,DataSize:%X\n",setvalue->Type,setvalue->DataSize); if ( setvalue->Type == 1 ) //Type为REG_SZ，其它类型的数据暂时忽略 { DbgPrint("[RegSetValue]Data:%ws\n",setvalue->Data); } } } break; case RegNtDeleteValueKey: { PREG_DELETE_VALUE_KEY_INFORMATION deletevalue = (PREG_DELETE_VALUE_KEY_INFORMATION)Argument2; if( MmIsAddressValid(deletevalue->ValueName) ) { registryEventIsValid = GetRegistryObjectCompleteName(®istryPath, NULL, deletevalue->Object); if ( registryEventIsValid ) { RtlUnicodeStringToAnsiString(&astr,®istryPath,TRUE); DbgPrint("[RegDelValue]ValueParentPath:%s!\n",astr.Buffer); RtlFreeAnsiString(&astr); } RtlUnicodeStringToAnsiString(&astr,deletevalue->ValueName,TRUE); DbgPrint("[RegDelValue]ValueName:%s!\n",astr.Buffer); if ( !strcmp(astr.Buffer,"ljh00001") ) { DbgPrint("[RegDelValue]Forbin!\n"); DbgPrint("[RegDelValue]ForbinKeyName:%s!\n"); RtlFreeAnsiString(&astr); return STATUS_INVALID_PARAMETER; } RtlFreeAnsiString(&astr); } } break; case RegNtRenameKey: { PREG_RENAME_KEY_INFORMATION renamevalue = (PREG_RENAME_KEY_INFORMATION)Argument2; if( MmIsAddressValid(renamevalue->NewName) ) { registryEventIsValid = GetRegistryObjectCompleteName(®istryPath, NULL, renamevalue->Object); if ( registryEventIsValid ) { RtlUnicodeStringToAnsiString(&astr,®istryPath,TRUE); DbgPrint("[RegRenameKey]KeyPath:%s!\n",astr.Buffer); RtlFreeAnsiString(&astr); } RtlUnicodeStringToAnsiString(&astr,renamevalue->NewName,TRUE); DbgPrint("[RegRenameKey]KeyName:%s!\n",astr.Buffer); RtlFreeAnsiString(&astr); } } break; default: break; } } except( EXCEPTION_EXECUTE_HANDLER ) { DbgPrint("[RegRoutine]Catch a Expection!\n"); exception = TRUE; registryEventIsValid = FALSE; } if(registryPath.Buffer != NULL) { ExFreePoolWithTag(registryPath.Buffer, 'ConT'); } return STATUS_SUCCESS;}BOOLEAN GetRegistryObjectCompleteName(PUNICODE_STRING pRegistryPath, PUNICODE_STRING pPartialRegistryPath, PVOID pRegistryObject){ BOOLEAN foundCompleteName = FALSE; BOOLEAN partial = FALSE; NTSTATUS status; ULONG returnedLength; PUNICODE_STRING pObjectName = NULL; //判断object的有效性 if( (!MmIsAddressValid(pRegistryObject)) || (pRegistryObject == NULL) ) { DbgPrint("[RegRoutine]pRegistryObject Invalid!\n"); return FALSE; } //使用ObQueryNameString来得到object对应的名称 status = ObQueryNameString(pRegistryObject, (POBJECT_NAME_INFORMATION)pObjectName, 0, &returnedLength ); if(status == STATUS_INFO_LENGTH_MISMATCH) //第一次传的buffer长度为0，ObQueryNameString返回的结果必定是缓冲区大小不足 { pObjectName = ExAllocatePoolWithTag(NonPagedPool, returnedLength, 'ConT'); //申请内存 if ( pObjectName == NULL ) //申请内存失败则返回FALSE { DbgPrint("[RegRoutine]AllocatePool Failed!\n"); return FALSE; } //查询名称 status = ObQueryNameString(pRegistryObject, (POBJECT_NAME_INFORMATION)pObjectName, returnedLength, &returnedLength ); if(NT_SUCCESS(status)) { RtlUnicodeStringCopy(pRegistryPath, pObjectName); //拷贝名称 foundCompleteName = TRUE; } ExFreePoolWithTag(pObjectName, 'ConT'); //无论查询是否成功都应该释放内存 } return foundCompleteName;}

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