Unknowndevice : 1

Lab Environment
Attacker's Machine - Linux kali 4.13.0-kali1-amd64 #1 SMP Debian 4.13.10-1kali2 (2017-11-08) x86_64 GNU/Linux
Vulnerable Machine - unknowndevice64: 1
Proof Of Concept
Scanning Phase
  • Route -n (to know the gateway) i.e 192.168.1.1
  • arp-scan --local (to scan for the machines connected to the network)
  • vulnerable machine IP - 192.168.1.9
Now I will use nmap for the further enumeration of services active on ports
Syntax used : nmap -A -p- 192.168.1.9 -Pn




Here , I found name of image file




Syntax used : steghide extract -sf filename
Password : h1dd3n




This is the time where I read h1dd3n.txt file and found brainfuck encryption.


Tried those credentials with ssh and got user privilege shell




After login we tried ls but command not found so we checked the PATH variable and found the path as /home/ud64/prog
Syntax used : $PATH
So i just used echo to know the all  executables inside ,if any
Syntax used : echo /home/ud64/prog/*
Explanation : * defines all
Results : /home/ud64/prog/vi
So we can run vi and escape the restricted shell by spawning it




So now just run vi by typing vi in terminal and cli will be opened and then spawned /bin/bash
By typing following in interface :!/bin/bash and press enter to exit the current interface
Now exporting /bin/bash to SHELL environment variable  and /usr/bin to PATH environment variable
Syntax used : export SHELL=/bin/bash:$SHELL
export PATH=/usr/bin:$PATH
Now  just used sudo command with a lil bit of help command
NOTE: sysud64 -h
LL

GOT THE FLAG FINALLY!!


Popular posts from this blog

Calculat3 M3 | CTF Learn

Image
This walkthrough will demonstrate the simple challenge based on command injection Calculat3 M3 This is the challenge page we got after visiting the given link. I provided random input in this calculator and intercepted the request with BurpSuite I got one parameter "expression" taking the values  Tried for command injection with ";ls" Forwarding the above request finally Got the Flag
Read more

TryHackme: Blue Walkthrough

Image
Task 1: Recon After we've connected to the tryhackme network the first task is to enumerate the target. We use Nmap for scanning the target IP. Command Used : nmap -sS -Pn <target-ip> -sS : Scan using TCP SYN scan -Pn : Treats all host as online --skip host discovery Next we used a command to find the vulnerability on the target machine. Command Used : nmap --script vuln <target-ip> --script : Specify the --script option to choose your own scripts to execute by providing categories , script file names, or the name of directories full of scripts you wish to execute. vuln : These scripts check for known vulnerabilites and generally only report results if they are found. Below, we see that nmap is indicating the target may be vulnerable to ms17-010(on the left0 and we can verify this using metasploit. To start Metasploit use command "msfconsole" We start by simply doing a search for ms17-010 Here we use module 2 i.e. exploit/windows...
Read more

HackTheBox-Traceback Walkthrough

Image
I started with scanning the IP Addr with nmap using the simple command. Command Used: nmap IP Addr of machine -Pn  nmap 10.10.10.181 -Pn  Starting Nmap 7.80 ( https://nmap.org ) at 2020-04-15 02:27 IST Nmap scan report for 10.10.10.181 Host is up (0.18s latency). Not shown: 998 closed ports PORT   STATE SERVICE 22/tcp open  ssh 80/tcp open  http Now only two things were in my mind and those were what should I enumerate first ssh or http. SSH can only be bruteforced and this point and bruteforce on the online machine doesn't works or we can say that most online hosted machines are not made to be bruteforced. So, I started  with HTTP. I fired up directory burster to find juicy directories if any and mean while I decided to browse the IP Addr since HTTP Service is active and running. I was presented with the below screen  dirb was not able to find any directories ...
Read more