# InsomnihackTeaser2017-cryptoquizzInsomnihack Teaser 2017 cryptoquizz Write Up
Cryptoquizz :  Hello, young hacker. Are you ready to fight rogue machines ? Now, you'll have to prove us that you are a genuine cryptographer.
Running on quizz.teaser.insomnihack.ch:1031
Solution : When we connect to host this is the sample output : ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~madHatter:Desktop madHatter$ nc quizz.teaser.insomnihack.ch 1031
~~ Hello, young hacker. Are you ready to fight rogue machines ?    ~~~~ Now, you'll have to prove us that you are a genuine             ~~~~ cryptographer.                                                  ~~
~~ What is the birth year of Ralph Merkle ?~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
It askes us questions about birth year of different cryptographers.
In order to get the flag we wrote a python code which has all of the cryptograpers name and birth year.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~import socket
def netcat(host, port):    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)    s.connect((host, int(port)))    content = None    while True:        data = s.recv(4096)        print(repr(data))         if "Shannon" in repr(data):            content = "1916\n"            s.sendall(content.encode()) 
        if "Davies" in repr(data):            content = "1924\n"            s.sendall(content.encode()) 
        if "Ferguson" in repr(data):            content = "1965\n"            s.sendall(content.encode()) 
        if "Vaudenay" in repr(data):            content = "1968\n"            s.sendall(content.encode()) 
        if "Mitsuru Matsui" in repr(data):            content = "1956\n"            s.sendall(content.encode()) 
        if "Stinson" in repr(data):            content = "1956\n"            s.sendall(content.encode()) 
        if "Brassard" in repr(data):            content = "1955\n"            s.sendall(content.encode()) 
        if "Ross Anderson" in repr(data):            content = "1956\n"            s.sendall(content.encode()) 
        if "Feistel" in repr(data):            content = "1915\n"            s.sendall(content.encode()) 
        if "Bernstein" in repr(data):            content = "1971\n"            s.sendall(content.encode()) 
        if "Kocher" in repr(data):            content = "1973\n"            s.sendall(content.encode()) 
        if "Coppersmith" in repr(data):            content = "1950\n"            s.sendall(content.encode()) 
        if "Lindell" in repr(data):            content = "1971\n"            s.sendall(content.encode()) 
        if "Rijmen" in repr(data):            content = "1970\n"            s.sendall(content.encode()) 
        if "Shamir" in repr(data):            content = "1952\n"            s.sendall(content.encode()) 
        if "Bellare" in repr(data):            content = "1962\n"            s.sendall(content.encode()) 
        if "Michael O. Rabin" in repr(data):            content = "1949\n"            s.sendall(content.encode()) 
        if "Bleichenbacher" in repr(data):            content = "1964\n"            s.sendall(content.encode()) 
        if "Chaum" in repr(data):            content = "1955\n"            s.sendall(content.encode()) 
        if "Oorschot" in repr(data):            content = "1962\n"            s.sendall(content.encode())
 
        if "Sahai" in repr(data):            content = "1974\n"            s.sendall(content.encode()) 
        if "Ferguson" in repr(data):            content = "1965\n"            s.sendall(content.encode()) 
        if "Niels" in repr(data):            content = "1964\n"            s.sendall(content.encode())
        if "Daemen" in repr(data):            content = "1965\n"            s.sendall(content.encode())
        if "Xiaoyun" in repr(data):            content = "1966\n"            s.sendall(content.encode())
        if "Micali" in repr(data):            content = "1954\n"            s.sendall(content.encode())
        if "Victor S. Miller" in repr(data):            content = "1947\n"            s.sendall(content.encode()) 
        if "Patarin" in repr(data):            content = "1965\n"            s.sendall(content.encode()) 
        if "Merkle" in repr(data):            content = "1952\n"            s.sendall(content.encode()) 
        if "Donald Davies" in repr(data):            content = "1924\n"            s.sendall(content.encode()) 
        if "Rogaway" in repr(data):            content = "1962\n"            s.sendall(content.encode()) 
        if "Yvo Desmedt" in repr(data):            content = "1956\n"            s.sendall(content.encode()) 
        if "Smart" in repr(data):            content = "1967\n"            s.sendall(content.encode()) 
        if "Hellman" in repr(data):            content = "1945\n"            s.sendall(content.encode()) 
        if "Okamoto" in repr(data):            content = "1952\n"            s.sendall(content.encode()) 
        if "Knudsen" in repr(data):            content = "1962\n"            s.sendall(content.encode()) 
        if "Schnorr" in repr(data):            content = "1943\n"            s.sendall(content.encode()) 
        if "Massey" in repr(data):            content = "1934\n"            s.sendall(content.encode()) 
        if "Biryukov" in repr(data):            content = "1969\n"            s.sendall(content.encode()) 
        if "Biham" in repr(data):            content = "1960\n"            s.sendall(content.encode()) 
        if "Stern" in repr(data):            content = "1949\n"            s.sendall(content.encode()) 
        if "Joux" in repr(data):            content = "1967\n"            s.sendall(content.encode()) 
        if "Halevi" in repr(data):            content = "1966\n"            s.sendall(content.encode()) 
        if "Cramer" in repr(data):            content = "1968\n"            s.sendall(content.encode()) 
        if "David Naccache" in repr(data):            content = "1967\n"            s.sendall(content.encode()) 
        if "Kaisa Nyberg" in repr(data):            content = "1967\n"            s.sendall(content.encode()) 
        if "Whitfield" in repr(data):            content = "1944\n"            s.sendall(content.encode()) 
        if "Moni Naor" in repr(data):            content = "1961\n"            s.sendall(content.encode()) 
        if "Rafail Ostrovsky" in repr(data):            content = "1963\n"            s.sendall(content.encode())
        if not data:            print(repr(data))            break
    s.shutdown(socket.SHUT_WR)    s.close()
netcat("quizz.teaser.insomnihack.ch",1031)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
After responding questions it gives us the flag in this output : 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~OK, young hacker. You are now considered to be a INS{GENUINE_CRYPTOGRAPHER_BUT_NOT_YET_A_PROVEN_SKILLED_ONE}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~