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破解SQL2005(SQL2008)的存儲(chǔ)過(guò)程的存儲(chǔ)過(guò)程

轉(zhuǎn)載自:http://www.cnblogs.com/amaoxp/archive/2009/06/08/1499038.html

問(wèn)題一： DAC連接問(wèn)題

自己嘗試了n次，最后總結(jié)一下連接步驟：

1 先用有sysadmin角色的用戶登陸SQL Server Management Studio；

2 在工具欄上選數(shù)據(jù)庫(kù)引擎查詢；服務(wù)器名稱改為 ADMIN:服務(wù)器名稱；選項(xiàng)>連接屬性>連接到數(shù)據(jù)庫(kù) 改為加密存儲(chǔ)過(guò)程所在的數(shù)據(jù)庫(kù)；連接

3 運(yùn)行解密的存儲(chǔ)過(guò)程；

問(wèn)題二：可用的存儲(chǔ)過(guò)程解密代碼

SQLServer2005里怎樣對(duì)使用with encryption選項(xiàng)創(chuàng)建的存儲(chǔ)過(guò)程解密

--王成輝翻譯整理，轉(zhuǎn)貼請(qǐng)注明出自微軟BI開(kāi)拓者www.windbi.com
--原帖地址

SQLServer2005里使用with encryption選項(xiàng)創(chuàng)建的存儲(chǔ)過(guò)程仍然和sqlserver2000里一樣，都是使用XOR進(jìn)行了的加密。和2000不一樣的是，在2005的系統(tǒng)表syscomments里已經(jīng)查不到加密過(guò)的密文了。要查密文必須使用DAC（專用管理員連接）連接到數(shù)據(jù)庫(kù)后，在系統(tǒng)表sys.sysobjvalues查詢，該表的列imageval存儲(chǔ)了相應(yīng)的密文。具體可以使用下面的查詢：

SELECT imageval FROM sys.sysobjvalues WHERE objid = object_id(@procedure) AND
valclass = 1 AND subobjid = 1

下面是解密的存儲(chǔ)過(guò)程，具體代碼如下(這是版本4.0，最新的，修正很長(zhǎng)的存儲(chǔ)過(guò)程解密出來(lái)是空白的問(wèn)題)：

Create PROCEDURE [dbo].[sp__windbi$decrypt]

(@procedure sysname = NULL, @revfl int = 1)

王成輝翻譯整理，轉(zhuǎn)貼請(qǐng)注明出自微軟BI開(kāi)拓者www.windbi.com

調(diào)用形式為：

exec dbo.sp__windbi$decrypt @procedure,0

如果第二個(gè)參數(shù)使用1的話，會(huì)給出該存儲(chǔ)過(guò)程的一些提示。

--版本4.0 修正存儲(chǔ)過(guò)程過(guò)長(zhǎng)解密出來(lái)是空白的問(wèn)題

SET NOCOUNT ON

IF @revfl = 1

BEGIN

PRINT '警告：該存儲(chǔ)過(guò)程會(huì)刪除并重建原始的存儲(chǔ)過(guò)程。'

PRINT ' 在運(yùn)行該存儲(chǔ)過(guò)程之前確保你的數(shù)據(jù)庫(kù)有一個(gè)備份。'

PRINT ' 該存儲(chǔ)過(guò)程通常應(yīng)該運(yùn)行在產(chǎn)品環(huán)境的一個(gè)備份的非產(chǎn)品環(huán)境下。'

PRINT ' 為了運(yùn)行這個(gè)存儲(chǔ)過(guò)程，將參數(shù)@refl的值更改為0。'

RETURN 0

END

DECLARE @intProcSpace bigint, @t bigint, @maxColID smallint,@procNameLength int

select @maxColID = max(subobjid) FROM

sys.sysobjvalues WHERE objid = object_id(@procedure)

--select @maxColID as 'Rows in sys.sysobjvalues'

select @procNameLength = datalength(@procedure) + 29

DECLARE @real_01 nvarchar(max)

DECLARE @fake_01 nvarchar(max)

DECLARE @fake_encrypt_01 nvarchar(max)

DECLARE @real_decrypt_01 nvarchar(max),@real_decrypt_01a nvarchar(max)

declare @objtype varchar(2),@ParentName nvarchar(max)

select @real_decrypt_01a = ''

--提取對(duì)象的類型如是存儲(chǔ)過(guò)程還是函數(shù)，如果是觸發(fā)器，還要得到其父對(duì)象的名稱

select @objtype=type,@parentname=object_name(parent_object_id)

from sys.objects where [object_id]=object_id(@procedure)

-- 從sys.sysobjvalues里提出加密的imageval記錄

SET @real_01=(SELECT top 1 imageval FROM sys.sysobjvalues WHERE objid =

object_id(@procedure) and valclass = 1 order by subobjid)

--創(chuàng)建一個(gè)臨時(shí)表

create table #output ( [ident] [int] IDENTITY (1, 1) NOT NULL ,

[real_decrypt] NVARCHAR(MAX) )

--開(kāi)始一個(gè)事務(wù)，稍后回滾

BEGIN TRAN

--更改原始的存儲(chǔ)過(guò)程，用短橫線替換

if @objtype='P'

SET @fake_01='ALTER PROCEDURE '+ @procedure +' WITH ENCRYPTION AS select 1

/*'+REPLICATE(cast('*'as nvarchar(max)), datalength(@real_01) /2 - @procNameLength)+'*/'

else if @objtype='FN'

SET @fake_01='ALTER FUNCTION '+ @procedure +'() RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1

/*'+REPLICATE(cast('*'as nvarchar(max)), datalength(@real_01) /2 - @procNameLength)+'*/ END'

else if @objtype='V'

SET @fake_01='ALTER view '+ @procedure +' WITH ENCRYPTION AS select 1 as col

/*'+REPLICATE(cast('*'as nvarchar(max)), datalength(@real_01) /2 - @procNameLength)+'*/'

else if @objtype='TR'

SET @fake_01='ALTER trigger '+ @procedure +' ON '+@parentname+'WITH ENCRYPTION AFTER INSERT AS RAISERROR (''N'',16,10)

/*'+REPLICATE(cast('*'as nvarchar(max)), datalength(@real_01) /2 - @procNameLength)+'*/'

EXECUTE (@fake_01)

--從sys.sysobjvalues里提出加密的假的

SET @fake_encrypt_01=(SELECT top 1 imageval FROM sys.sysobjvalues WHERE objid =

object_id(@procedure) and valclass = 1 order by subobjid )

if @objtype='P'

SET @fake_01='Create PROCEDURE '+ @procedure +' WITH ENCRYPTION AS select 1

/*'+REPLICATE(cast('*'as nvarchar(max)), datalength(@real_01) /2 - @procNameLength)+'*/'

else if @objtype='FN'

SET @fake_01='CREATE FUNCTION '+ @procedure +'() RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1

/*'+REPLICATE(cast('*'as nvarchar(max)), datalength(@real_01) /2 - @procNameLength)+'*/ END'

else if @objtype='V'

SET @fake_01='Create view '+ @procedure +' WITH ENCRYPTION AS select 1 as col

/*'+REPLICATE(cast('*'as nvarchar(max)), datalength(@real_01) /2 - @procNameLength)+'*/'

else if @objtype='TR'

SET @fake_01='Create trigger '+ @procedure +' ON '+@parentname+'WITH ENCRYPTION AFTER INSERT AS RAISERROR (''N'',16,10)

/*'+REPLICATE(cast('*'as nvarchar(max)), datalength(@real_01) /2 - @procNameLength)+'*/'

--開(kāi)始計(jì)數(shù)

SET @intProcSpace=1

--使用字符填充臨時(shí)變量

SET @real_decrypt_01 = replicate(cast('A'as nvarchar(max)), (datalength(@real_01) /2 ))

--循環(huán)設(shè)置每一個(gè)變量，創(chuàng)建真正的變量

--每次一個(gè)字節(jié)

SET @intProcSpace=1

--如有必要，遍歷每個(gè)@real_xx變量并解密

WHILE @intProcSpace<=(datalength(@real_01)/2)

BEGIN

--真的和假的和加密的假的進(jìn)行異或處理

SET @real_decrypt_01 = stuff(@real_decrypt_01, @intProcSpace, 1,

NCHAR(UNICODE(substring(@real_01, @intProcSpace, 1)) ^

(UNICODE(substring(@fake_01, @intProcSpace, 1)) ^

UNICODE(substring(@fake_encrypt_01, @intProcSpace, 1)))))

SET @intProcSpace=@intProcSpace+1

END

--通過(guò)sp_helptext邏輯向表#output里插入變量

insert #output (real_decrypt) select @real_decrypt_01

--select real_decrypt AS '#output chek' from #output --測(cè)試

-- -------------------------------------

--開(kāi)始從sp_helptext提取

-- -------------------------------------

declare @dbname sysname

,@BlankSpaceAdded int

,@BasePos int

,@CurrentPos int

,@TextLength int

,@LineId int

,@AddOnLen int

,@LFCR int --回車換行的長(zhǎng)度

,@DefinedLength int

,@SyscomText nvarchar(max)

,@Line nvarchar(255)

Select @DefinedLength = 255

SELECT @BlankSpaceAdded = 0 --跟蹤行結(jié)束的空格。注意Len函數(shù)忽略了多余的空格

CREATE TABLE #CommentText

(LineId int

,Text nvarchar(255) collate database_default)

--使用#output代替sys.sysobjvalues

DECLARE ms_crs_syscom CURSOR LOCAL

FOR SELECT real_decrypt from #output

ORDER BY ident

FOR READ ONLY

--獲取文本

SELECT @LFCR = 2

SELECT @LineId = 1

OPEN ms_crs_syscom

FETCH NEXT FROM ms_crs_syscom into @SyscomText

WHILE @@fetch_status >= 0

BEGIN

SELECT @BasePos = 1

SELECT @CurrentPos = 1

SELECT @TextLength = LEN(@SyscomText)

WHILE @CurrentPos != 0

BEGIN

--通過(guò)回車查找行的結(jié)束

SELECT @CurrentPos = CHARINDEX(char(13)+char(10), @SyscomText,

@BasePos)

--如果找到回車

IF @CurrentPos != 0

BEGIN

--如果@Lines的長(zhǎng)度的新值比設(shè)置的大就插入@Lines目前的內(nèi)容并繼續(xù)

While (isnull(LEN(@Line),0) + @BlankSpaceAdded +

@CurrentPos-@BasePos + @LFCR) > @DefinedLength

BEGIN

SELECT @AddOnLen = @DefinedLength-(isnull(LEN(@Line),0) +

@BlankSpaceAdded)

INSERT #CommentText VALUES

( @LineId,

isnull(@Line, N'') + isnull(SUBSTRING(@SyscomText,

@BasePos, @AddOnLen), N''))

SELECT @Line = NULL, @LineId = @LineId + 1,

@BasePos = @BasePos + @AddOnLen, @BlankSpaceAdded = 0

END

SELECT @Line = isnull(@Line, N'') +

isnull(SUBSTRING(@SyscomText, @BasePos, @CurrentPos-@BasePos + @LFCR), N'')

SELECT @BasePos = @CurrentPos+2

INSERT #CommentText VALUES( @LineId, @Line )

SELECT @LineId = @LineId + 1

SELECT @Line = NULL

END

ELSE

--如果回車沒(méi)找到

BEGIN

IF @BasePos <= @TextLength

BEGIN

--如果@Lines長(zhǎng)度的新值大于定義的長(zhǎng)度

While (isnull(LEN(@Line),0) + @BlankSpaceAdded +

@TextLength-@BasePos+1 ) > @DefinedLength

BEGIN

SELECT @AddOnLen = @DefinedLength -

(isnull(LEN(@Line),0) + @BlankSpaceAdded)

INSERT #CommentText VALUES

( @LineId,

isnull(@Line, N'') + isnull(SUBSTRING(@SyscomText,

@BasePos, @AddOnLen), N''))

SELECT @Line = NULL, @LineId = @LineId + 1,

@BasePos = @BasePos + @AddOnLen, @BlankSpaceAdded =

END

SELECT @Line = isnull(@Line, N'') +

isnull(SUBSTRING(@SyscomText, @BasePos, @TextLength-@BasePos+1 ), N'')

if LEN(@Line) < @DefinedLength and charindex(' ',

@SyscomText, @TextLength+1 ) > 0

BEGIN

SELECT @Line = @Line + ' ', @BlankSpaceAdded = 1

END

FETCH NEXT FROM ms_crs_syscom into @SyscomText

END

IF @Line is NOT NULL

INSERT #CommentText VALUES( @LineId, @Line )

select Text from #CommentText order by LineId

CLOSE ms_crs_syscom

DEALLOCATE ms_crs_syscom

DROP TABLE #CommentText

-- -------------------------------------

--結(jié)束從sp_helptext提取

-- -------------------------------------

--刪除用短橫線創(chuàng)建的存儲(chǔ)過(guò)程并重建原始的存儲(chǔ)過(guò)程

ROLLBACK TRAN

DROP TABLE #output

ALTER PROCEDURE [dbo].[sp__windbi$decrypt]

(@procedure sysname = NULL, @revfl int = 1)

王成輝翻譯整理，轉(zhuǎn)貼請(qǐng)注明出自微軟BI開(kāi)拓者www.windbi.com

目前這個(gè)存儲(chǔ)過(guò)程只能解密存儲(chǔ)過(guò)程，至于解密函數(shù)、觸發(fā)器、視圖的存儲(chǔ)過(guò)程本網(wǎng)站會(huì)進(jìn)一步關(guān)注，調(diào)用形式為：

exec dbo.sp__windbi$decrypt @procedure,0

如果第二個(gè)參數(shù)使用1的話，會(huì)給出該存儲(chǔ)過(guò)程的一些提示。

--版本2.0

SET NOCOUNT ON

IF @revfl = 1

BEGIN

PRINT '警告：該存儲(chǔ)過(guò)程會(huì)刪除并重建原始的存儲(chǔ)過(guò)程。'

PRINT ' 在運(yùn)行該存儲(chǔ)過(guò)程之前確保你的數(shù)據(jù)庫(kù)有一個(gè)備份。'

PRINT ' 該存儲(chǔ)過(guò)程通常應(yīng)該運(yùn)行在產(chǎn)品環(huán)境的一個(gè)備份的非產(chǎn)品環(huán)境下。'

PRINT ' 為了運(yùn)行這個(gè)存儲(chǔ)過(guò)程，將參數(shù)@refl的值更改為0。'

RETURN 0

END

DECLARE @intProcSpace bigint, @t bigint, @maxColID smallint,@intEncrypted

tinyint,@procNameLength int

select @maxColID = max(subobjid),@intEncrypted = imageval FROM

sys.sysobjvalues WHERE objid = object_id(@procedure)

GROUP BY imageval

--select @maxColID as 'Rows in sys.sysobjvalues'

select @procNameLength = datalength(@procedure) + 29

DECLARE @real_01 nvarchar(max)

DECLARE @fake_01 nvarchar(max)

DECLARE @fake_encrypt_01 nvarchar(max)

DECLARE @real_decrypt_01 nvarchar(max),@real_decrypt_01a nvarchar(max)

declare @objtype varchar(2),@ParentName nvarchar(max)

select @real_decrypt_01a = ''

--提取對(duì)象的類型如是存儲(chǔ)過(guò)程還是函數(shù)，如果是觸發(fā)器，還要得到其父對(duì)象的名稱

select @objtype=type,@parentname=object_name(parent_object_id)

from sys.objects where [object_id]=object_id(@procedure)

-- 從sys.sysobjvalues里提出加密的imageval記錄

SET @real_01=(SELECT top 1 imageval FROM sys.sysobjvalues WHERE objid =

object_id(@procedure) and valclass = 1 order by subobjid)

--創(chuàng)建一個(gè)臨時(shí)表

create table #output ( [ident] [int] IDENTITY (1, 1) NOT NULL ,

[real_decrypt] NVARCHAR(MAX) )

--開(kāi)始一個(gè)事務(wù)，稍后回滾

BEGIN TRAN

--更改原始的存儲(chǔ)過(guò)程，用短橫線替換

if @objtype='P'

SET @fake_01='ALTER PROCEDURE '+ @procedure +' WITH ENCRYPTION AS

'+REPLICATE('-', 40003 - @procNameLength)

else if @objtype='FN'

SET @fake_01='ALTER FUNCTION '+ @procedure +'() RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1

/*'+REPLICATE('*', datalength(@real_01) /2 - @procNameLength)+'*/ END'

else if @objtype='V'

SET @fake_01='ALTER view '+ @procedure +' WITH ENCRYPTION AS select 1 as col

/*'+REPLICATE('*', datalength(@real_01) /2 - @procNameLength)+'*/'

else if @objtype='TR'

SET @fake_01='ALTER trigger '+ @procedure +' ON '+@parentname+' WITH ENCRYPTION AFTER INSERT AS RAISERROR (''N'',16,10)

/*'+REPLICATE('*', datalength(@real_01) /2 - @procNameLength)+'*/'

EXECUTE (@fake_01)

--從sys.sysobjvalues里提出加密的假的

SET @fake_encrypt_01=(SELECT top 1 imageval FROM sys.sysobjvalues WHERE objid =

object_id(@procedure) and valclass = 1 order by subobjid )

if @objtype='P'

SET @fake_01='Create PROCEDURE '+ @procedure +' WITH ENCRYPTION AS

'+REPLICATE('-', 40003 - @procNameLength)

else if @objtype='FN'

SET @fake_01='CREATE FUNCTION '+ @procedure +'() RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1

/*'+REPLICATE('*', datalength(@real_01) /2 - @procNameLength)+'*/ END'

else if @objtype='V'

SET @fake_01='Create view '+ @procedure +' WITH ENCRYPTION AS select 1 as col

/*'+REPLICATE('*', datalength(@real_01) /2 - @procNameLength)+'*/'

else if @objtype='TR'

SET @fake_01='Create trigger '+ @procedure +' ON '+@parentname+' WITH ENCRYPTION AFTER INSERT AS RAISERROR (''N'',16,10)

/*'+REPLICATE('*', datalength(@real_01) /2 - @procNameLength)+'*/'

--開(kāi)始計(jì)數(shù)

SET @intProcSpace=1

--使用字符填充臨時(shí)變量

SET @real_decrypt_01 = replicate(N'A', (datalength(@real_01) /2 ))

--循環(huán)設(shè)置每一個(gè)變量，創(chuàng)建真正的變量

--每次一個(gè)字節(jié)

SET @intProcSpace=1

--如有必要，遍歷每個(gè)@real_xx變量并解密

WHILE @intProcSpace<=(datalength(@real_01)/2)

BEGIN

--真的和假的和加密的假的進(jìn)行異或處理

SET @real_decrypt_01 = stuff(@real_decrypt_01, @intProcSpace, 1,

NCHAR(UNICODE(substring(@real_01, @intProcSpace, 1)) ^

(UNICODE(substring(@fake_01, @intProcSpace, 1)) ^

UNICODE(substring(@fake_encrypt_01, @intProcSpace, 1)))))

SET @intProcSpace=@intProcSpace+1

END

--通過(guò)sp_helptext邏輯向表#output里插入變量

insert #output (real_decrypt) select @real_decrypt_01

-- select real_decrypt AS '#output chek' from #output --測(cè)試

-- -------------------------------------

--開(kāi)始從sp_helptext提取

-- -------------------------------------

declare @dbname sysname

,@BlankSpaceAdded int

,@BasePos int

,@CurrentPos int

,@TextLength int

,@LineId int

,@AddOnLen int

,@LFCR int --回車換行的長(zhǎng)度

,@DefinedLength int

,@SyscomText nvarchar(4000)

,@Line nvarchar(255)

Select @DefinedLength = 255

SELECT @BlankSpaceAdded = 0 --跟蹤行結(jié)束的空格。注意Len函數(shù)忽略了多余的空格

CREATE TABLE #CommentText

(LineId int

,Text nvarchar(255) collate database_default)

--使用#output代替sys.sysobjvalues

DECLARE ms_crs_syscom CURSOR LOCAL

FOR SELECT real_decrypt from #output

ORDER BY ident

FOR READ ONLY

--獲取文本

SELECT @LFCR = 2

SELECT @LineId = 1

OPEN ms_crs_syscom

FETCH NEXT FROM ms_crs_syscom into @SyscomText

WHILE @@fetch_status >= 0

BEGIN

SELECT @BasePos = 1

SELECT @CurrentPos = 1

SELECT @TextLength = LEN(@SyscomText)

WHILE @CurrentPos != 0

BEGIN

--通過(guò)回車查找行的結(jié)束

SELECT @CurrentPos = CHARINDEX(char(13)+char(10), @SyscomText,

@BasePos)

--如果找到回車

IF @CurrentPos != 0

BEGIN

--如果@Lines的長(zhǎng)度的新值比設(shè)置的大就插入@Lines目前的內(nèi)容并繼續(xù)

While (isnull(LEN(@Line),0) + @BlankSpaceAdded +

@CurrentPos-@BasePos + @LFCR) > @DefinedLength

BEGIN

SELECT @AddOnLen = @DefinedLength-(isnull(LEN(@Line),0) +

@BlankSpaceAdded)

INSERT #CommentText VALUES

( @LineId,

isnull(@Line, N'') + isnull(SUBSTRING(@SyscomText,

@BasePos, @AddOnLen), N''))

SELECT @Line = NULL, @LineId = @LineId + 1,

@BasePos = @BasePos + @AddOnLen, @BlankSpaceAdded = 0

END

SELECT @Line = isnull(@Line, N'') +

isnull(SUBSTRING(@SyscomText, @BasePos, @CurrentPos-@BasePos + @LFCR), N'')

SELECT @BasePos = @CurrentPos+2

INSERT #CommentText VALUES( @LineId, @Line )

SELECT @LineId = @LineId + 1

SELECT @Line = NULL

END

ELSE

--如果回車沒(méi)找到

BEGIN

IF @BasePos <= @TextLength

BEGIN

--如果@Lines長(zhǎng)度的新值大于定義的長(zhǎng)度

While (isnull(LEN(@Line),0) + @BlankSpaceAdded +

@TextLength-@BasePos+1 ) > @DefinedLength

BEGIN

SELECT @AddOnLen = @DefinedLength -

(isnull(LEN(@Line),0) + @BlankSpaceAdded)

INSERT #CommentText VALUES

( @LineId,

isnull(@Line, N'') + isnull(SUBSTRING(@SyscomText,

@BasePos, @AddOnLen), N''))

SELECT @Line = NULL, @LineId = @LineId + 1,

@BasePos = @BasePos + @AddOnLen, @BlankSpaceAdded =

END

SELECT @Line = isnull(@Line, N'') +

isnull(SUBSTRING(@SyscomText, @BasePos, @TextLength-@BasePos+1 ), N'')

if LEN(@Line) < @DefinedLength and charindex(' ',

@SyscomText, @TextLength+1 ) > 0

BEGIN

SELECT @Line = @Line + ' ', @BlankSpaceAdded = 1

END

FETCH NEXT FROM ms_crs_syscom into @SyscomText

END

IF @Line is NOT NULL

INSERT #CommentText VALUES( @LineId, @Line )

select Text from #CommentText order by LineId

CLOSE ms_crs_syscom

DEALLOCATE ms_crs_syscom

DROP TABLE #CommentText

-- -------------------------------------

--結(jié)束從sp_helptext提取

-- -------------------------------------

--刪除用短橫線創(chuàng)建的存儲(chǔ)過(guò)程并重建原始的存儲(chǔ)過(guò)程

ROLLBACK TRAN

DROP TABLE #output

posted on 2011-01-29 16:38 楊粼波閱讀(2812) 評(píng)論(0) 編輯收藏引用

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