IDC资讯中心
创建下面这个存储过程
然后调用
exec sp_decrypt @objectname
(@objectname就是加密过的存储过程名)
暴露无遗！
此程序不破坏原有存储过程！
呵呵呵，真好玩！
create procedure sp_decrypt (@objectname varchar(50))
as
begin
begin transaction –add by playyuer
declare @objectname1 varchar(100)
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 , @t bigint
declare @m int,@n int,@q int
set @m=(select max(colid) from syscomments where id = object_id(@objectname))
set @n=1
–get encrypted data
create table #temp(colid int,ctext varbinary(8000))
insert #temp select colid,ctext from syscomments where id = object_id(@objectname)
set @sql1=alter procedure + @objectname + with encryption as
–set @sql1=alter procedure + @objectname + with encryption as
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)
while @n<=@m
begin
set @origsptext1=(select ctext from #temp where colid=@n)
set @objectname1=@objectname+_t
set @origsptext3=(select ctext from syscomments where id=object_id(@objectname) and colid=@n)
if @n=1
begin
set @origsptext2=create procedure + @objectname + with encryption as —
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(na, (datalength(@origsptext1) / 2))
–loop
while @i<=datalength(@origsptext1)/2
begin
–reverse encryption (xor original+bogus+bogus encrypted)
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
–drop original sp
–execute (drop procedure + @objectname)
–remove encryption
–preserve case
set @resultsp=replace((@resultsp),with encryption, )
set @resultsp=replace((@resultsp),with encryption, )
set @resultsp=replace((@resultsp),with encryption, )
if charindex(with encryption,upper(@resultsp) )>0
set @resultsp=replace(upper(@resultsp),with encryption, )
–replace stored procedure without enryption
print @resultsp
–execute( @resultsp)
set @n=@n+1
end
drop table #temp
end
rollback transaction –add by playyuer
go
