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

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

分类： Visual C++2010编程技术 VC++编程技术 Visual Studio2012 Windows82012-10-24 15:26 1738人阅读评论(1) 收藏举报

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

[cpp] view plaincopy
#include "ntifs.h"  
#include "RegistryCallBack.h"  
#include <ntstrsafe.h>  
  
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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