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-- □-技术研讨会 (http://enjoyit.com.cn/bbs/list.asp?boardid=36)
---- SqlServer 2000和2005存储过程破解 (http://enjoyit.com.cn/bbs/dispbbs.asp?boardid=36&id=7709)
-- 发布时间：2010/9/8 23:46:11
-- SqlServer 2000和2005存储过程破解
亲自测试了一下,发现2k的确实可以破解. sk5的可能需要搞到master表.
原文如下
===========================================================================
SQL Server加密存储过程用到“WITH ENCRYPTION”参数的时候，就可以将它加密，这种加密方式是不可逆的，再也不能打开了，呜呜～那么我们改怎么样才能看到原来的代码而不破坏这个存储过程呢？icech在网上找到了两个十分十分大牛的人！一个是j9988，早在2004年就写了一个可以破解加密的存储过程，支持SQL Server 2000非常的好；另一个是王成辉翻译老外写的一个，竟然可以支持SQL Server 2005版本！
如何加密SQL Server存储过程？
命令如：
CREATE Procedure 存储过程名(...) WITH ENCRYPTION AS ...
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
针对SQL Server 2000的解密存储过程
create PROCEDURE sp_decrypt(@objectname varchar(50))
AS
begin
set nocount on
--CSDN：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：CSDNj9988@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
-- 发布时间：2010/9/8 23:46:27
--
针对SQL Server 2005的解密存储过程
create PROCEDURE [dbo].[sp__windbi$decrypt]
(@procedure sysname = NULL, @revfl int = 1)
AS
/*
王成辉翻译整理，转贴请注明出自微软BI开拓者www.windbi.com
目前这个存储过程只能解密存储过程，至于解密函数、触发器、视图的存储过程本网站会进一步关注，调用形式为：
exec dbo.sp__windbi$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2.0
*/
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,@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
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