TryHackMe | Nmap Live Host Discovery WriteUp

 

Learn how to use Nmap to discover live hosts using ARP scan, ICMP scan, and TCP/UDP ping scan.

Link- https://tryhackme.com/room/nmap01


Send a packet with the following:

  • From computer1
  • To computer1 (to indicate it is broadcast)
  • Packet Type: “ARP Request”
  • Data: computer6 (because we are asking for computer6 MAC address using ARP Request)

How many devices can see the ARP Request?

4

Did computer6 receive the ARP Request? (Y/N)

N

Send a packet with the following:

  • From computer4
  • To computer4 (to indicate it is broadcast)
  • Packet Type: “ARP Request”
  • Data: computer6 (because we are asking for computer6 MAC address using ARP Request)

How many devices can see the ARP Request?

4

Did computer6 reply to the ARP Request? (Y/N)

Y

What is the first IP address Nmap would scan if you provided 10.10.12.13/29 as your target?

10.10.12.8

How many IP addresses will Nmap scan if you provide the following range 10.10.0-255.101-125?

6400

Send a packet with the following:

  • From computer1
  • To computer3
  • Packet Type: “Ping Request”

What is the type of packet that computer1 sent before the ping?

ARP Request

What is the type of packet that computer1 received before being able to send the ping?

ARP Response

How many computers responded to the ping request?

1

Send a packet with the following:

  • From computer2
  • To computer5
  • Packet Type: “Ping Request”

What is the name of the first device that responded to the first ARP Request?

router

What is the name of the first device that responded to the second ARP Request?

computer5

Send another Ping Request. Did it require new ARP Requests? (Y/N)

N

We will be sending broadcast ARP Requests packets with the following options:

  • From computer1
  • To computer1 (to indicate it is broadcast)
  • Packet Type: “ARP Request”
  • Data: try all the possible eight devices (other than computer1) in the network: computer2, computer3, computer4, computer5, computer6, switch1, switch2, and router.

How many devices are you able to discover using ARP requests?

3

What is the option required to tell Nmap to use ICMP Timestamp to discover live hosts?

-PP

What is the option required to tell Nmap to use ICMP Address Mask to discover live hosts?

-PM

What is the option required to tell Nmap to use ICMP Echo to discover life hosts?

-PE

Which TCP ping scan does not require a privileged account?

TCP SYN Ping

Which TCP ping scan requires a privileged account?

TCP ACK Ping

What option do you need to add to Nmap to run a TCP SYN ping scan on the telnet port?

-PS23

We want Nmap to issue a reverse DNS lookup for all the possibles hosts on a subnet, hoping to get some insights from the names. What option should we add?

-R


That’s it!. See you in the next Room :)


Comments

Post a Comment

Eonrec

Ads by Eonads

Popular posts from this blog

TryHackMe | Introduction To Honeypots Walkthrough

Image
  A guided room covering the deployment of honeypots and analysis of botnet activities Link - https://tryhackme.com/room/introductiontohoneypots Create a file and then log back in is the file still there? (Yay/Nay) Nay How many passwords include the word “password” or some other variation of it e.g “p@ssw0rd” 15 What is arguably the most common tool for brute-forcing SSH? hydra What intrusion prevention software framework is commonly used to mitigate SSH brute-force attacks? Fail2Ban What CPU does the honeypot “use”? Run command cat /proc/cpuinfo Intel(R) Core(TM) i9–11900KB CPU @ 3.30GHz Does the honeypot return the correct values when uname -a is run? (Yay/Nay) Nay What flag must be set to pipe wget output into bash? -O How would you disable bash history using unset ? unset HISTFILE What brand of device is the bot in the first sample searching for? (BotCommands/Sample1.txt) Do a simple google search of the processes Mikrotik What are the commands in the second sample changing? ...
Read more

TryHackMe | DFIR: An Introduction WriteUp

Image
  Introductory room for the DFIR module Link - https://tryhackme.com/room/introductoryroomdfirmodule What does DFIR stand for? Digital Forensics and Incident Response DFIR requires expertise in two fields. One of the fields is Digital Forensics. What is the other field? Incident Response. Complete the timeline creation exercise in the attached static site. What is the flag that you get after completion? At what stage of the IR process are disrupted services brought back online as they were before the incident? recovery At what stage of the IR process is the threat evicted from the network after performing the forensic analysis? eradication What is the NIST-equivalent of the step called “Lessons learned” in the SANS process? Post-incident Activity That’s it! See you in the next Room :)
Read more

TryHackMe | Intro to Cyber Threat Intel WriteUp

Image
  Introducing cyber threat intelligence and related topics, such as relevant standards and frameworks. Link - https://tryhackme.com/room/cyberthreatintel What does CTI stand for? Cyber Threat Intelligence IP addresses, Hashes and other threat artefacts would be found under which Threat Intelligence classification? Technical Intel At which phase of the lifecycle is data made usable through sorting, organising, correlation and presentation? processing During which phase do security analysts get the chance to define the questions to investigate incidents? direction What sharing models are supported by TAXII? collection and channel When an adversary has obtained access to a network and is extracting data, what phase of the kill chain are they on? action on objectives What was the source email address? vipivillain@badbank.com What was the name of the file downloaded? flbpfuh.exe After building the threat profile, what message do you receive? After solving below you get code That’s it! S...
Read more