Privilege Escalation

     This is the most important part after gaining shell is to gain root access on the system, for that there are numerous ways, but first I like to go the old classic way by finding what permission the user have if we have user access, what is running on the crontab, what file permission we have and what are the binary file which have suid or guid permission on the server and on what kernel the server is running on, based on these enumeration we can try to privilege our user to get root level access.