破解SQL Server加密的存储过程的方法(含 sql 2000与sql 2005版)

技术2024-11-21 3

转载自：http://www.cnblogs.com/zhou__zhou/archive/2010/04/17/sqlserver.html http://www.cnblogs.com/huqingyu/archive/2007/12/17/997296.html

SQLServer2005里使用with encryption选项创建的存储过程仍然和sqlserver2000里一样，都是使用XOR进行了的加密。和2000不一样的是，在2005的系统表syscomments里已经查不到加密过的密文了。要查密文必须使用DAC（专用管理员连接）连接到数据库后，在系统表sys.sysobjvalues查询，该表的列imageval存储了相应的密文。具体可以使用下面的查询： SELECT imageval FROM sys.sysobjvalues WHERE objid = object_id(@procedure) AND valclass = 1 AND subobjid = 1

案例2:有接手别人工作,而对于业务存储过程中使用加密了内容的,维护难受啊,GOOGLE搜索,终于不负有心人.Sql2000 的。

CREATE PROCEDURE usp_decrypt(@objectname varchar(50)) AS begin set nocount on --：j9988 copyright:2004.07.15 --V3.2 --破解字节不受限制，适用于SQLSERVER2000存储过程，函数，视图，触发器 --修正上一版"视图触发器"不能正确解密错误 --发现有错，请E_MAIL：j9988@tom.com begin tran declare @objectname1 varchar(100),@orgvarbin varbinary(8000) declare @sql1 nvarchar(4000),@sql2 varchar(8000),@sql3 nvarchar(4000),@sql4 nvarchar(4000) DECLARE @OrigSpText1 nvarchar(4000), @OrigSpText2 nvarchar(4000) , @OrigSpText3 nvarchar(4000), @resultsp nvarchar(4000) declare @i int,@status int,@type varchar(10),@parentid int declare @colid int,@n int,@q int,@j int,@k int,@encrypted int,@number int select @type=xtype,@parentid=parent_obj from sysobjects where id=object_id(@objectname) create table #temp(number int,colid int,ctext varbinary(8000),encrypted int,status int) insert #temp SELECT number,colid,ctext,encrypted,status FROM syscomments WHERE id = object_id(@objectname) select @number=max(number) from #temp set @k=0 while @k<=@number begin if exists(select 1 from syscomments where id=object_id(@objectname) and number=@k) begin if @type='P' set @sql1=(case when @number>1 then 'ALTER PROCEDURE '+ @objectname +';'+rtrim(@k)+' WITH ENCRYPTION AS ' else 'ALTER PROCEDURE '+ @objectname+' WITH ENCRYPTION AS ' end) if @type='TR' begin declare @parent_obj varchar(255),@tr_parent_xtype varchar(10) select @parent_obj=parent_obj from sysobjects where id=object_id(@objectname) select @tr_parent_xtype=xtype from sysobjects where id=@parent_obj if @tr_parent_xtype='V' begin set @sql1='ALTER TRIGGER '+@objectname+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION INSTERD OF INSERT AS PRINT 1 ' end else begin set @sql1='ALTER TRIGGER '+@objectname+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION FOR INSERT AS PRINT 1 ' end end if @type='FN' or @type='TF' or @type='IF' set @sql1=(case @type when 'TF' then 'ALTER FUNCTION '+ @objectname+'(@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end ' when 'FN' then 'ALTER FUNCTION '+ @objectname+'(@a char(1)) returns char(1) with encryption as begin return @a end' when 'IF' then 'ALTER FUNCTION '+ @objectname+'(@a char(1)) returns table with encryption as return select @a as a' end) if @type='V' set @sql1='ALTER VIEW '+@objectname+' WITH ENCRYPTION AS SELECT 1 as f' set @q=len(@sql1) set @sql1=@sql1+REPLICATE('-',4000-@q) select @sql2=REPLICATE('-',8000) set @sql3='exec(@sql1' select @colid=max(colid) from #temp where number=@k set @n=1 while @n<=CEILING(1.0*(@colid-1)/2) and len(@sql3)<=3996 begin set @sql3=@sql3+'+@' set @n=@n+1 end set @sql3=@sql3+')' exec sp_executesql @sql3,N'@sql1 nvarchar(4000),@ varchar(8000)',@sql1=@sql1,@=@sql2 end set @k=@k+1 end set @k=0 while @k<=@number begin if exists(select 1 from syscomments where id=object_id(@objectname) and number=@k) begin select @colid=max(colid) from #temp where number=@k set @n=1 while @n<=@colid begin select @OrigSpText1=ctext,@encrypted=encrypted,@status=status FROM #temp WHERE colid=@n and number=@k SET @OrigSpText3=(SELECT ctext FROM syscomments WHERE id=object_id(@objectname) and colid=@n and number=@k) if @n=1 begin if @type='P' SET @OrigSpText2=(case when @number>1 then 'CREATE PROCEDURE '+ @objectname +';'+rtrim(@k)+' WITH ENCRYPTION AS ' else 'CREATE PROCEDURE '+ @objectname +' WITH ENCRYPTION AS ' end) if @type='FN' or @type='TF' or @type='IF' SET @OrigSpText2=(case @type when 'TF' then 'CREATE FUNCTION '+ @objectname+'(@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end ' when 'FN' then 'CREATE FUNCTION '+ @objectname+'(@a char(1)) returns char(1) with encryption as begin return @a end' when 'IF' then 'CREATE FUNCTION '+ @objectname+'(@a char(1)) returns table with encryption as return select @a as a' end) if @type='TR' begin if @tr_parent_xtype='V' begin set @OrigSpText2='CREATE TRIGGER '+@objectname+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION INSTEAD OF INSERT AS PRINT 1 ' end else begin set @OrigSpText2='CREATE TRIGGER '+@objectname+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION FOR INSERT AS PRINT 1 ' end end if @type='V' set @OrigSpText2='CREATE VIEW '+@objectname+' WITH ENCRYPTION AS SELECT 1 as f' set @q=4000-len(@OrigSpText2) set @OrigSpText2=@OrigSpText2+REPLICATE('-',@q) end else begin SET @OrigSpText2=REPLICATE('-', 4000) end SET @i=1 SET @resultsp = replicate(N'A', (datalength(@OrigSpText1) / 2)) WHILE @i<=datalength(@OrigSpText1)/2 BEGIN SET @resultsp = stuff(@resultsp, @i, 1, NCHAR(UNICODE(substring(@OrigSpText1, @i, 1)) ^ (UNICODE(substring(@OrigSpText2, @i, 1)) ^ UNICODE(substring(@OrigSpText3, @i, 1))))) SET @i=@i+1 END set @orgvarbin=cast(@OrigSpText1 as varbinary(8000)) set @resultsp=(case when @encrypted=1 then @resultsp else convert(nvarchar(4000),case when @status&2=2 then uncompress(@orgvarbin) else @orgvarbin end) end) print @resultsp set @n=@n+1 end end set @k=@k+1 end drop table #temp rollback tran end

再有一个 Sql 2005 版的

create PROCEDURE [dbo].[usp_decrypt] (@procedure sysname = NULL, @revfl int = 1) AS /**//* 王成辉翻译整理，转贴请注明出自微软BI开拓者www.windbi.com 目前这个存储过程只能解密存储过程，至于解密函数、触发器、视图的存储过程本网站会进一步关注，调用形式为： exec dbo.usp_decrypt procedure,0 如果第二个参数使用1的话，会给出该存储过程的一些提示。 --版本3.0 修正存储过程过长引起的问题 */ SET NOCOUNT ON IF @revfl = 1 BEGIN PRINT '警告：该存储过程会删除并重建原始的存储过程。' PRINT ' 在运行该存储过程之前确保你的数据库有一个备份。' PRINT ' 该存储过程通常应该运行在产品环境的一个备份的非产品环境下。' PRINT ' 为了运行这个存储过程，将参数@refl的值更改为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 = '' --提取对象的类型如是存储过程还是函数，如果是触发器，还要得到其父对象的名称 select @objtype=type,@parentname=object_name(parent_object_id) from sys.objects where [object_id]=object_id(@procedure) -- 从sys.sysobjvalues里提出加密的imageval记录 SET @real_01=(SELECT top 1 imageval FROM sys.sysobjvalues WHERE objid = object_id(@procedure) and valclass = 1 order by subobjid) --创建一个临时表 create table #output ( [ident] [int] IDENTITY (1, 1) NOT NULL , [real_decrypt] NVARCHAR(MAX) ) --开始一个事务，稍后回滚 BEGIN TRAN --更改原始的存储过程，用短横线替换 if @objtype='P' SET @fake_01='ALTER PROCEDURE '+ @procedure +' WITH ENCRYPTION AS '+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) --从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(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)+'*/' --开始计数 SET @intProcSpace=1 --使用字符填充临时变量 SET @real_decrypt_01 = replicate(cast('A'as nvarchar(max)), (datalength(@real_01) /2 )) --循环设置每一个变量，创建真正的变量 --每次一个字节 SET @intProcSpace=1 --如有必要，遍历每个@real_xx变量并解密 WHILE @intProcSpace<=(datalength(@real_01)/2) BEGIN --真的和假的和加密的假的进行异或处理 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 --通过sp_helptext逻辑向表#output里插入变量 insert #output (real_decrypt) select @real_decrypt_01 -- select real_decrypt AS '#output chek' from #output --测试 -- ------------------------------------- --开始从sp_helptext提取 -- ------------------------------------- declare @dbname sysname ,@BlankSpaceAdded int ,@BasePos int ,@CurrentPos int ,@TextLength int ,@LineId int ,@AddOnLen int ,@LFCR int --回车换行的长度 ,@DefinedLength int ,@SyscomText nvarchar(max) ,@Line nvarchar(255) Select @DefinedLength = 255 SELECT @BlankSpaceAdded = 0 --跟踪行结束的空格。注意Len函数忽略了多余的空格 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 --获取文本 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 --通过回车查找行的结束 SELECT @CurrentPos = CHARINDEX(char(13)+char(10), @SyscomText, @BasePos) --如果找到回车 IF @CurrentPos != 0 BEGIN --如果@Lines的长度的新值比设置的大就插入@Lines目前的内容并继续 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 --如果回车没找到 BEGIN IF @BasePos <= @TextLength BEGIN --如果@Lines长度的新值大于定义的长度 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 = 0 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 END END 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 -- ------------------------------------- --结束从sp_helptext提取 -- ------------------------------------- --删除用短横线创建的存储过程并重建原始的存储过程 ROLLBACK TRAN DROP TABLE #output

已经打包好的文件下载在这里

引用网摘: http://www.windbi.com/showtopic-153.aspx http://www.easte.cn/post/SQL_Server_SP_Decrypt_ALL.html

解密 SQL2005 存储过程要使用 DAC 模式连接到 SQL2005 数据库处理

转载自：

http://hi.baidu.com/lzj1981/blog/item/ed436a62f5eb25d7e6113a0f.html

http://www.taotechinfo.com/collect/2010322/n13188930.html

如果你在网上找到破解SQL2005加密的存储过程，运行时提示不成功，那么你可要使用DAC模式连接到SQL2005数据库来处理，方法如下：

1、打开 SQL Server Management Studio 2、登录框按“取消” 3、工具栏上的第一个图标：数据库引擎查询 4、服务器名称前加“ADMIN:”，如：ADMIN:hostname/sql2005 5、选择“Windows 身份验证”，或输入sa和密码，登录。已打开 SQL Server Management Studio 并连接，忽略1、2步。

如果出现：provider: SQL 网络接口, error: 43 - 在获取专用的管理员连接(DAC)端口时出错。确保正在运行 SQL 浏览器，或检查错误日志中是否有该端口号的错误

原因可能是： The firewall on the server has refused the connection. A specified SQL Server instance name is not valid. The SQL Server Browser service (sqlbrowser) is not started.（打开Sql Server里的 SQL Server Brower 数据库浏览服务）

需要执行：

sp_configure 'remote admin connections', 1 GO RECONFIGURE 这样一般都可以连接成功的

SQL Server2005中如何知道某个存储过程是否已加密？

转载自：http://www.cnblogs.com/gis_gps/archive/2009/01/16/1377133.html

最近在写一个小软件，需要知道当前那些存储过程已经被加密，如果被加密，则调用解密过程，将其解密，还原明文保存。基于sql server2005解密已加密的存储过程，网上有成熟的代码可供参考，但如何通过sql 语句的方式知道当前数据库中的存储过程是否已加密呢？？

最初我就认为加密与不加密的存储过程肯定是一个标记位，存放在某个系统表中，但这个系统表在那里？我却不知道，曾通过google或msdn去查找，但没有找到相关资料，甚至准备写邮件咨询邹建等大侠....

突然想到，原来经常利用sp_helptext查看某个未加密过程的明文，那如果用sp_helptext查看已加密的过程，会有什么反映呢。结果很明确，系统提示：对象***文件已加密！

呵呵，既然sp_helptext知道这个过程已经加密，那我查看一下sp_helptext源码不就可以知道，它是如何判断出该过程是否已加密的吗？

　于是，输入：exec sp_helptext sp_helptext　，屏幕上果然输出sp_helptext的明文，从sp_helptext中我们很容易找到这行code:

select text from syscomments where id = @objid and encrypted = 0............

这段代码意思很明确，查询输出未加密的过程，那么我所需要的就是：

　　select * from syscomments where encrypted = １　

　好了，说到这里，我想各位已经很清楚知道如何解决本文开头所提出的问题！祝各位好运！

===================================================================

示例

加密:

create procedure p_test

with encryption

select * from test

解密：

use [test] exec sp_decrypt 'p_test'

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