Tasks

Sub Domains Enumerations

wget cisco.com

cat index.html | grep "href=" | cut -d "/" -f 3 | grep ".cisco.com" | cut -d '"' -f 1 | sort | uniq > result1.txt

for line in $(cat result1.txt); do host $line | grep "has address" | cut -d " " -f 4 >> result2.txt; done

Apache Log File Forensics

cat access.log | cut -d " " -f 1 | sort | uniq -c | sort -n | tail -n 1
   7620 45.132.207.154

cat access.log | grep "45.132.207.154" | cut -d '"' -f 2 | sort | uniq -c | sort -n | tail -n 1
   7266 POST /wp-login.php HTTP/1.1

cat access.log | grep "45.132.207.154" | grep "POST /wp-login.php HTTP/1.1" | cut -d '"' -f 2,3 | sort | uniq -c | sort -n
      1 POST /wp-login.php HTTP/1.1 200 3854
   7265 POST /wp-login.php HTTP/1.1 401 0

77KB

access.rar

Add User to Sudo Group

useradd -m -s /bin/bash testuser

cat /etc/passwd | tail

passwd testuser

cat /etc/shadow | grep testuser

usermod -aG sudo testuser

cat /etc/group | grep sudo

su - testuser

userdel -r testuser

Install Apache Server

apt-get update

apt-get install apache2

service apache2 start

netstat -antp | grep 80

systemctl enable apache2

ls -l /etc/rc5.d/ | grep apache2

chmod 777 /var/www/html/

apt-get purge apache2