存储过程解密(破解函数,过程,触发器,视图.仅限于SQLSERVER2000)

复制代码 代码如下:

create procedure sp_decrypt(@objectname varchar(50))

as

begin

begin tran

declare @objectname1 varchar(100),@orgvarbin varbinary(8000)

declare @sql1 nvarchar(4000),@sql2 nvarchar(4000),@sql3 nvarchar(4000),@sql4 nvarchar(4000),@sql5 nvarchar(4000),@sql6 nvarchar(4000),@sql7 nvarchar(4000),@sql8 nvarchar(4000),@sql9 nvarchar(4000),@sql10 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’

set @sql1=’alter trigger ‘+@objectname+’ on ‘+object_name(@parentid)+’ with encryption for insert as print 1 ‘

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 ‘

set @q=len(@sql1)

set @sql1=@sql1+replicate(‘-‘,4000-@q)

select @sql2=replicate(‘-‘,4000),@sql3=replicate(‘-‘,4000),@sql4=replicate(‘-‘,4000),@sql5=replicate(‘-‘,4000),@sql6=replicate(‘-‘,4000),@sql7=replicate(‘-‘,4000),@sql8=replicate(‘-‘,4000),@sql9=replicate(‘-‘,4000),@sql10=replicate(‘-‘,4000)

exec(@sql1+@sql2+@sql3+@sql4+@sql5+@sql6+@sql7+@sql8+@sql9+@sql10)

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’–刚才有错改一下

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’

set @origsptext2=’create trigger ‘+@objectname+’ on ‘+object_name(@parentid)+’ with encryption for insert as print 1 ‘

if @type=’v’

set @origsptext2=’create view ‘+@objectname+’ with encryption as select 1 ‘

set @q=4000-len(@origsptext2)

set @origsptext2=@origsptext2+replicate(‘-‘,@q)

end

else

begin

set @origsptext2=replicate(‘-‘, 4000)

end

–start counter

set @i=1

–fill temporary variable

set @resultsp = replicate(n’a’, (datalength(@origsptext1) / 2))

–loop

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

–execute( @resultsp)

set @n=@n+1

end

end

set @k=@k+1

end

drop table #temp

rollback tran

end

go