from pwn import *import timeimport randomfrom ctypes import CDLLfrom math import floorlibc = CDLL('libc-2.23.so')s = remote('bitsctf.bits-quark.org',1337)print s.recv(9999999999)now = int(floor(time.time()))libc.srand(now)for i in range(0,35):<span>	  v8 = libc.rand() & 0xF</span>  print v8<span>	  s.sendline(str(v8))</span>  print s.recv(999999999999999)