HTB academy

linux fundamentals

system information

intro to basic linux commands for system info

cheat sheet has lots of common commands

You can start your own instance and display full screen in another tab/window

Then you spawn a target system which you access via the terminal in your own instance

ssh username@hostIPaddress

then enter password

hostname

machine hardware name: uname

path to home dir: pwd

path to mail: env

shell for user: env

kernel version: uname -r (google)

network interface details: ifconfig

user commands

long version means use 2 dashes

--lock

-L

Which option needs to be set to execute a command as a different user using the "su" command?

--command

Basic Tools

service scanning

service scanning

command

description

nmap 10.129.42.253

Run nmap on an IP

nmap -sV -sC -p- 10.129.42.253

Run an nmap script scan on an IP

locate scripts/citrix

List various available nmap scripts

nmap --script smb-os-discovery.nse -p445 10.10.10.40

Run an nmap script on an IP

netcat 10.10.10.10 22

Grab banner of an open port

smbclient -N -L \\\\10.129.42.253

List SMB Shares

smbclient \\\\10.129.42.253\\users

Connect to an SMB share

snmpwalk -v 2c -c public 10.129.42.253 1.3.6.1.2.1.1.5.0

Scan SNMP on an IP

onesixtyone -c dict.txt 10.129.42.254

Brute force SNMP secret string

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