import socket
import struct #interpret strings as packed binary data
import time

nikkojames=socket.socket()
nikkojames.connect(('172.30.73.143',1228))

challenge1=nikkojames.recv(230).decode() #breaking up the challenge messages to specific bytes
print(challenge1)
challenge2=nikkojames.recv(198).decode()
print(challenge2)
input=nikkojames.recv(8) #capturing the 8 byte input
print("Capture: "+str(input))
bigEndian=struct.unpack('>LL',input) #unpack into two 32-bit unsigned integers in big endian
print("Unpacked: "+str(bigEndian))
bigEndian1=bigEndian[0]
print("Part One: "+str(bigEndian1))
bigEndian2=bigEndian[1]
print("Part Two: "+str(bigEndian2))
sum=0xFFFFFFFF & (bigEndian1+bigEndian2)
print("Sum: "+str(sum))
output=struct.pack('<Q',sum) #pack into one 32-bit unsigned integer in little endian
print("Packed: "+str(output))
nikkojames.sendall(output)
time.sleep(3)

flag1=nikkojames.recv(16).decode()
print(flag1)
flag2=nikkojames.recv(16).decode()
print(flag2)