[Pwnable.kr] coins1

by yiz96 23. 2 月 2016 pwnable writeup 0

练习python的socket编程，玩的游戏是简单的找假硬币的游戏，为了速度快些最好在服务器本地跑

import subprocess
from socket import *
import sys

def request(low, mid):
    if low == mid:
        mid = mid + 1
    req = " ".join(str(x) for x in range(low, mid)) + "\n"
    sock.send(req)

sock = socket(AF_INET, SOCK_STREAM)
sock.connect(("0.0.0.0", 9007))
while True:
    msg = sock.recv(1024).splitlines()
    for line in msg:
        if line.startswith("N="):
            high = int(line.split(" ")[0].split("=")[1]) + 1
            low = 0
            mid = (low + high) >> 1
            request(low, mid)
        elif line.isdigit():
            if line == "9":
                request(low, low)
                continue
            elif line[-1:] != '0':
                high = mid
            else:
                low = mid
            mid = (low + high) >> 1
            request(low, mid)
        else:
            print line

import subprocess

from socket import *

import sys

def request(low, mid):

if low == mid:

mid = mid + 1

req = " ".join(str(x) for x in range(low, mid)) + "\n"

sock.send(req)

sock = socket(AF_INET, SOCK_STREAM)

sock.connect(("0.0.0.0", 9007))

while True:

msg = sock.recv(1024).splitlines()

for line in msg:

if line.startswith("N="):

high = int(line.split(" ")[0].split("=")[1]) + 1

low = 0

mid = (low + high) >> 1

request(low, mid)

elif line.isdigit():

if line == "9":

request(low, low)

continue

elif line[-1:] != '0':

high = mid

else:

low = mid

mid = (low + high) >> 1

request(low, mid)

else:

print line

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