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

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