# You may NOT alter the import list!!!!

import pyshark

import hashlib

class MITMException$($Exception$)$:

$"""$A class to throw if you come across incorrect syntax or other issues"""

def $\_\_$init$\_\_($self$,$ value$)$:

self.value $=$ value

def $\_\_$str$\_\_($self$)$:

return repr$($self$.$value$)$

class MITMProject$($object$)$:

def $\_\_$init$\_\_($self$)$:

self.cap $=$ pyshark.FileCapture$(\text{'}$TCP$.$reflection$\_$fall$2023.$pcap'$)$

self.class$\_$id $="$CS$60353257"$

# TODO: Change this to YOUR Georgia Tech ID$!!!$

# This is your $9-$digit Georgia Tech ID

self.student$\_$id $=\text{'}903861572\text{'}$

def get$\_$student$\_$hash$($self$,$ value$)$:

return hashlib.sha$256($self$.$student$\_$id$.$encode$(\text{'}$UTF$-8\text{'})+$ self.class$\_$id $+$ value$).$hexdigest$()$

# TODO:

# Task $1$: Return n being:

# n $=$ Number of packets with only SYN$+$ACK flags

def syn$\_$ack$($self$)$:

n $=0$

return n

# TODO:

# Task $2$: Return n being:

# n $=$ Number of packets with only RST flag

def rst$($self$)$:

n $=0$

return n

# TODO:

# Task $3$: Return d$,$p$,$ being:

# d $=$ IP Address of the victim

# p $=$ Port being attacked

def victim$\_$ip$\_$port$($self$)$:

d$,$p $=0,0$

return d$,$p

if $\_\_$name$\_\_==\text{'}\_\_$main$\_\_\text{'}$:

pcap$\_$analysis $=$ MITMProject$()$

ip$,$port $=$ pcap$\_$analysis.victim$\_$ip$\_$port$()$

synack $=$ pcap$\_$analysis.syn$\_$ack$()$

rst $=$ pcap$\_$analysis.rst$()$

print$("$IP and Port: $",$ip$,$port$)$

print$("$Number of SYN$+$ACK Packets : $",$ synack$)$

print$("$Number of RST Packets : $",$ rst$).......$ Task $6\mathrm{.}1$

Modify def syn$\_$ack$($self$)$: function to return n$,$ being n $($int$)$ the number of packets on TCP$.$reflection.pcap file that contains ONLY the SYN$+$ACK flags

Points: $3$