破解sqlserver存储过程

这个版本已经在sqlserver20008中破解成功

 

操作方法：

1.先copy下面这段sql在查询分析器里执行一下，此即为解密存储过程

create PROCEDURE [dbo].[sp_decrypt] 

(@procedure sysname = NULL)  

AS  

SET NOCOUNT ON  

BEGIN

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 @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('-', 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)  

--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('-', 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)+'*/'  

--开始计数  

SET @intProcSpace=1  

--使用字符填充临时变量  

SET @real_decrypt_01 = replicate(N'A', (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(4000)  

,@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

END

2.启用sqlserver的dac，远程dac启用方法

在查询分析器里运行

EXEC sp_configure 'remote admin connections', 1;
RECONFIGURE;

 

3.然后开一个 数据库引擎查询（database engine query），切记这个查询和一般的查询不一样

 

接下来在弹开的数据库连接对话框里

“服务器名称 ”这一栏里面输入“admin:数据库ip地址或别名”，其他和平时连接一样

 

4. 这步你懂的 exec sp_decrypt '要破解的存储过程名字'