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# re: procedure 破解 SQL decrypt 2004 2008-04-02 17:40 lby

/*
作者：邹建

CSDN：j9988 copyright:2004.04.15
V3.1
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
*/

CREATE procedure sp_decrypt(@objectName varchar(50))
as

begin
set nocount on

begin tran

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

@sql1 nvarchar(4000),
@sql2 varchar(8000),
@sql3 nvarchar(4000),
@sql4 nvarchar(4000),

@OrigSpText1 nvarchar(4000),
@OrigSpText2 nvarchar(4000),
@OrigSpText3 nvarchar(4000),
@resultsp nvarchar(4000),

@i int,
@status int,
@type varchar(10),
@parentid int,

@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

GO
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