主持人: 45.77.245.244
端口: 5006
它是CTF挑战赛的主持人。但是我不需要解决它。我想在python中自动化它。
连接到服务器时。服务器将返回2条消息
1:编程.....
2:n =? \ NAnwser:
并听取用户输入的答案。
Netcat:
toor@MSI:~$ nc 45.77.245.244 5006
PROGRAMING - WHITEHAT 2019:
--> Coungting the triangles <--
HOW MANY TRIANGLE IS CREATED BY N (1..N) NUMBER. N < 10^6
Example: with N = 5
OUTPUT : 3
(2,3,4),(3,4,5),(2,4,5)
................/\...................|\...................
.............../ \..................| \..................
............../ \.................| \.................
............./ \................| \................
............/ \...............| \...............
.........../ \..............| \..............
........../____________\.............|______\.............
n = 99
Answer: 4
Wrong answer. I can't trust you anymore :'<
我写了一段代码,将其连接并发送回“ n”并获得所需的结果:
Wrong answer. I can't trust you anymore: '<
我的Python代码:
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('45.77.245.244', 5006))
print('Server:', str(s.recv(1024)))
while True:
data = s.recv(1024).strip()
if data:
data = str(data)
print('Server:', data)
n = ''.join([i for i in data if i.isdigit()])
n = bytes(n, 'ascii')
s.send(n)
print('Client: ', n)
s.close()
输出:
Server: b'\nPROGRAMING - WHITEHAT 2019:\n\n--> Coungting the triangles <--\n\nHOW MANY TRIANGLE IS CREATED BY N (1..N) NUMBER. N < 10^6\n\nExample: with N = 5\nOUTPUT : 3 \n\n(2,3,4),(3,4,5),(2,4,5)\n................/\\...................|\\...................\n.............../ \\..................| \\..................\n............../ \\.................| \\.................\n............./ \\................| \\................\n............/ \\...............| \\...............\n.........../ \\..............| \\..............\n........../____________\\.............|______\\.............\n\t\n'
Server: b'n = 25\nAnswer:'
Client: b'25'
在send(n)
和print('send:', n)
确定发送成功之后,使用 netcat 时我没有得到想要的输出。 / p>
输出:Wrong answer. I can't trust you anymore :'<
我哪里出错了?有办法解决吗?
答案 0 :(得分:0)
也许这是一个简单的问题。该代码似乎没有任何错误,但现实是我忘记发送字符“ \ n”。我如何解决:
n = (n + '\n')
s.send(n)
在这里,我需要添加一个换行符^^