Exemple #1
0
def listen_for_clients():
    #init chroot
    helpers.initialize_chroot(2014,1015)

    # setup server
    listensock = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
    listensock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    listensock.bind( ( "0.0.0.0", 9876 ) )
    listensock.listen( 5 )

    #Quietly ignore zombie children
    signal.signal(signal.SIGCHLD, signal.SIG_IGN)
    print( "PROG02: socket, bind and listen complete" )

    while True:
        print( "PROG02: Waiting for client" )       
        ( client, address ) = listensock.accept()
        print( "PROG02: Got new client {0}".format( address ) )

        #Fork the processes
        try:
            pid = os.fork()
        except:
            print "PROG02: Error occurred during forking. Ignoring"
            continue

        if pid == 0:
            #Child fork - Close the server socket handle, Reseed random and process the client
            listensock.close()
            random.seed()
            ch = ClientHandler( client )
            ch.run()
            print( "PROG02: Handling client" )
        else:
            #Parent fork - Close the client socket and continue
            print "PROG02: Forked off child process with id %d" % pid
            client.close()
            continue
Exemple #2
0
                conn.send('Large pieces of debris fall from the ceiling.\n')
                
            if collapse == 100:
                conn.send('Hurry!\n')
            
            if collapse == 0:
                conn.send('The ceiling collapses and crushes you. You are dead.\n')
                conn.send('You are dead.\n')
                return        

def checknode(Z, x, y, node_type):
    return Z[y,x] == node_type

#Run the chroot code
#TODO: Define the chroot user and group here
helpers.initialize_chroot(2009,1010)

print "Starting up maze server"
listensock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
listensock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listensock.bind(("0.0.0.0",7788))
print "Listening on port 7788"

#We dont care for zombies
signal.signal(signal.SIGCHLD,signal.SIG_IGN)

listensock.listen(1)
while True:
    (conn,address) = listensock.accept()
    print "Connection accepted from",address
    try:
Exemple #3
0
                    iv.encode("hex")[0:iv_size] + ":" +
                    ciphertext.encode("hex") + "\n")
            cmd = f.readline()  #Get next command
            continue
        else:
            conn.send("Invalid command. Bye\n")
            break

    #clean up sockets
    f.close()
    conn.close()


#Run the chroot code
#TODO: Define the chroot user and group here
helpers.initialize_chroot(2005, 1006)

print "Crypto3: Starting up challenge"
listensock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
listensock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listensock.bind(("0.0.0.0", 1337))
print "Crypto3: Listening on port 1337"

#We dont care for zombies
signal.signal(signal.SIGCHLD, signal.SIG_IGN)

listensock.listen(1)
while True:
    (conn, address) = listensock.accept()
    print "Crypto3: Connection accepted from", address
    try:
        # encrypt the data using AES stream mode
        data = encrypt(aes, data)

        # send the hex representation to the client
        conn.send(data)

        # try to get some more data from the client, if they want to continue,
        data = conn.recv(2048).strip()

    # client has gone
    conn.close()


# Run the chroot code
# TODO: Define the chroot user and group here
helpers.initialize_chroot(2004, 1005)

print "Starting up simple crypto challenge"
listensock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
listensock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listensock.bind(("0.0.0.0", 9999))
print "Listening on port 9999"

# We dont care for zombies
signal.signal(signal.SIGCHLD, signal.SIG_IGN)

listensock.listen(1)
while True:
    (conn, address) = listensock.accept()
    print "Connection accepted from", address
    try:
Exemple #5
0
            conn.sendall("Key reset\n")
            coded = shuffle_plain(plain)
            conn.sendall("#>")
        else:
            if data not in plain:
                continue
            command += data
        
        conn.sendall(data)
            
    conn.close()    


#Run the chroot code
#TODO: Define the chroot user and group here
helpers.initialize_chroot(2003,1004)

print "Starting up simple crypto challenge"
listensock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
listensock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listensock.bind(("0.0.0.0",12433))
print "Listening on port 12433"

#We dont care for zombies
signal.signal(signal.SIGCHLD,signal.SIG_IGN)

listensock.listen(1)
while True:
    (conn,address) = listensock.accept()
    print "Connection accepted from",address
    try:
Exemple #6
0
		#encrypt the data using AES stream mode
		data = encrypt(aes, data)

		#send the hex representation to the client
		conn.send(data)

		#try to get some more data from the client, if they want to continue,			
		data = conn.recv(2048).strip()

	#client has gone
	conn.close()

#Run the chroot code
#TODO: Define the chroot user and group here
helpers.initialize_chroot(2004,1005)

print "Starting up simple crypto challenge"
listensock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
listensock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listensock.bind(("0.0.0.0",9999))
print "Listening on port 9999"

#We dont care for zombies
signal.signal(signal.SIGCHLD,signal.SIG_IGN)

listensock.listen(1)
while True:
    (conn,address) = listensock.accept()
    print "Connection accepted from",address
    try:
Exemple #7
0
            else:
                ciphertext = encrypt(iv, segs[1])
                conn.send(iv.encode("hex")[0:iv_size]+":"+ciphertext.encode("hex")+"\n")
            cmd = f.readline() #Get next command
            continue
        else:
            conn.send("Invalid command. Bye\n")
            break

    #clean up sockets
    f.close()
    conn.close()

#Run the chroot code
#TODO: Define the chroot user and group here
helpers.initialize_chroot(2005,1006)

print "Crypto3: Starting up challenge"
listensock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
listensock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listensock.bind(("0.0.0.0",1337))
print "Crypto3: Listening on port 1337"

#We dont care for zombies
signal.signal(signal.SIGCHLD,signal.SIG_IGN)

listensock.listen(1)
while True:
    (conn,address) = listensock.accept()
    print "Crypto3: Connection accepted from",address
    try:
Exemple #8
0
                conn.send('Hurry!\n')

            if collapse == 0:
                conn.send(
                    'The ceiling collapses and crushes you. You are dead.\n')
                conn.send('You are dead.\n')
                return


def checknode(Z, x, y, node_type):
    return Z[y, x] == node_type


#Run the chroot code
#TODO: Define the chroot user and group here
helpers.initialize_chroot(2009, 1010)

print "Starting up maze server"
listensock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
listensock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listensock.bind(("0.0.0.0", 7788))
print "Listening on port 7788"

#We dont care for zombies
signal.signal(signal.SIGCHLD, signal.SIG_IGN)

listensock.listen(1)
while True:
    (conn, address) = listensock.accept()
    print "Connection accepted from", address
    try:
Exemple #9
0
			correctCounter+=1
	
	elapsed = (int(time.time()) - start)
	print elapsed
	if correctCounter == CORRECTANSWERS and elapsed < ELAPSEDTIME:
		conn.send(helpers.load_flag())
	elif correctCounter == CORRECTANSWERS:
		conn.send("You unjumbled all the words but took to long")
	else:
		conn.send("You got %d / %d words correct" % (correctCounter,CORRECTANSWERS))
				
	conn.close()

#Run the chroot code
#TODO: Define the chroot user and group here
helpers.initialize_chroot(2008,1009)

print "Starting up simple crypto challenge"
listensock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
listensock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listensock.bind(("0.0.0.0",5050))
print "Listening on port 5050"

#We dont care for zombies
signal.signal(signal.SIGCHLD,signal.SIG_IGN)

listensock.listen(1)
while True:
    (conn,address) = listensock.accept()
    print "Connection accepted from",address
    try: