内容来自互联网,作者不明 drop procedure sp_decrypt go 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(N''''A'''', (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
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