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HTB - Blocky

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Basic Nmap scan​

Nmap command: nmap -Pn -n -sC -sV -oA scan_boxs/blocky/nmap/10.10.10.37-d-scan 10.10.10.37
Nmap scan report for 10.10.10.37
Host is up (0.15s latency).
Not shown: 996 filtered tcp ports (no-response)
PORT     STATE  SERVICE VERSION
21/tcp   open   ftp     ProFTPD 1.3.5a
22/tcp   open   ssh     OpenSSH 7.2p2 Ubuntu 4ubuntu2.2 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   2048 d6:2b:99:b4:d5:e7:53:ce:2b:fc:b5:d7:9d:79:fb:a2 (RSA)
|   256 5d:7f:38:95:70:c9:be:ac:67:a0:1e:86:e7:97:84:03 (ECDSA)
|_  256 09:d5:c2:04:95:1a:90:ef:87:56:25:97:df:83:70:67 (ED25519)
80/tcp   open   http    Apache httpd 2.4.18
|_http-title: Did not follow redirect to http://blocky.htb
|_http-server-header: Apache/2.4.18 (Ubuntu)
8192/tcp closed sophos
Service Info: Host: 127.0.1.1; OSs: Unix, Linux; CPE: cpe:/o:linux:linux_kernel

Open ports : 21,22,80,8192

PORTSERVICEPRODUCTVERSIONEXTRAINFO
21ftpProFTPD1.3.5a
22sshOpenSSH7.2p2 Ubuntu 4ubuntu2.2Ubuntu Linux; protocol 2.0
80httpApache httpd2.4.18
8192sophos

port 80:​

Adding the ip address 10.10.14.37 host url with blocky.htb in /etc/hosts.
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And has wordpress running on the machine. Running wpscan to probe into the machine.

Enumerating users on wordpress environment. There is a user Notch alt

gobuster has detected few files

/index.php            (Status: 301) [Size: 0] [--> http://blocky.htb/]
/wiki                 (Status: 301) [Size: 307] [--> http://blocky.htb/wiki/]
/wp-content           (Status: 301) [Size: 313] [--> http://blocky.htb/wp-content/]
/plugins              (Status: 301) [Size: 310] [--> http://blocky.htb/plugins/]
/wp-login.php         (Status: 200) [Size: 2397]
/license.txt          (Status: 200) [Size: 19935]
/wp-includes          (Status: 301) [Size: 314] [--> http://blocky.htb/wp-includes/]
/javascript           (Status: 301) [Size: 313] [--> http://blocky.htb/javascript/]
/wp-trackback.php     (Status: 200) [Size: 135]
/wp-admin             (Status: 301) [Size: 311] [--> http://blocky.htb/wp-admin/]
/phpmyadmin           (Status: 301) [Size: 313] [--> http://blocky.htb/phpmyadmin/]
/xmlrpc.php           (Status: 405) [Size: 42]
/wp-signup.php        (Status: 302) [Size: 0] [--> http://blocky.htb/wp-login.php?action=register]
/server-status        (Status: 403) [Size: 298]

wiki​

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phpmyadmin​

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plugins​

Browsing through all the detected url /plugins looks promising.
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Downloading the BlockyCore.jar and griefprevention-1.11.2-3.1.1.298.jar files.

Open jar file - jadx-gui​

Extracting the source from jar file with jadx-gui

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found Creds​

Found credentials for sql user in BlockyCore plugin

sqluser = root
sqlpass = 8YsqfCTnvxAUeduzjNSXe22

Lets try connecting to login into phpmyadmin again with these newly found cred's.

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Successfully able to login.

found cred's for wp-user notch in phpmyadmin on wordpress database in wp_users table. querying the table got us the cred's
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user_login: Notch 	
password: $P$BiVoTj899ItS1EZnMhqeqVbrZI4Oq0/ 	
user_email: notch@blockcraftfake.com

Cracking the wordpress password

hashcat --example-hashes | grep -B12 -A2 '\$P\$'

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But was not successful in cracking the password.

ssh connection as notch​

Now we will use the password from phpmyadmin to the user notch and connect through ssh using the root credentials earlier we found.
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user flag​

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Privilege escalation​

Checking sudo permission.

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Looks like the user notch can run any command as root user.

Root flag​

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