This series of tutorials is aimed to share the notes taken while I was learning python for cybersecurity with the books - Black Hat Python.
這系列教學文章為學習筆記+延伸資源，旨在分享學習書籍 Black Hat Python時所思所學，也希望能幫助想了解Python和資安的大大們入門。

This tutorail has also been written in English in Medium.

目錄

• Proxy IV

看文前, 你應該要具備以下基礎能力:

• Python 語法基礎
• Linux 語法基礎
• Networking 網路基礎知識

Let's get started! 開始吧!

Proxy IV

1.

def receive_from(connection):
    buffer = b""
    connection.settimeout(20)
    try:
        while True:
            data = connection.recv(4096)
            if not data:
                break

            buffer += data
    except Exception as e:
        print('error ', e)
        pass

    return buffer

2.

buffer = b""

建立一個空的字串緩衝，這會積累(accumulate)將從socket得到的回應

3.

connection.settimeout(20)

設一個20秒的timeout，如果你代理交通到其他國家或經過丟失資料的網路(which might be aggressive if you're proxying traffic to other countries or over lossy networks)，這可能會有攻擊性，所以增加時間是必要的。

4.

try:
    while True:
        data = connection.recv(4096)
        if not data:
            break

        buffer += data

閱讀進入緩衝區(buffer)的回應資料，直到再也沒有任何資料或時間到了。

Reference參考資料

• Black Gat Python 2nd Edition: Python Programming for Hackers and Pentesters (Book)
• 絕讚 Github source codes made by Elevate Cyber | Selfmade
• 另外有英文版Medium文章

推薦影片
絕讚! Youtube 教學影片 | Elevate Cyber

原始碼
Github - Python For Cybersecurity | Monles