---
title: "How to log in to Thunder under Debian"
description: "When you open Thunder (Xunlei) with Wine on Linux, login does not work. This post uses Wireshark to solve that."
date: 2016-08-24
tags: ["linux"]
lang: en
url: https://bugs.cc/posts/how-to-use-thunder-login-account-under-debian/
translation: https://bugs.cc/zh/posts/how-to-use-thunder-login-account-under-debian/
---

# How to log in to Thunder under Debian

## Intro

Today I saw someone share the movie "Now You See Me 2" on Qzone.

![](https://bugs.cc/images/how-to-use-thunder-login-account-under-debian/qzone-movie-share.png)

mongoose has been annoying me these past few days, and I wanted to watch a movie to relax, but I still have to write code, so I figured I would download the movie and watch it after the bug was fixed. So here comes the problem.

## Download Thunder

Maybe it is a regional thing, but Thunder from the official site is very slow, so I used Baidu Manager to download it. [fuck me down XunLei](http://112.29.142.181/sw.bos.baidu.com/sw-search-sp/software/66cfb7c33b400/Thunder_9.0.12.332_baidu.exe)

## Setup

Just use Wine to run the exe. I will not cover that here. Look it up on Baidu yourself.

## Install notes

Do not use `sudo wine Thunder_9.0.12.332_baidu.exe`. Use `wine Thunder_9.0.12.332_baidu.exe`, or Thunder will be installed under the root user.

## How to launch

After Thunder is installed, it puts a shortcut on your desktop. If it does not, do what I did:

1. `cd ~/.wine/drive_c/Program\ Files\ \(x86\)/Thunder\ Network/Thunder9/Program/`

2. `wine Thunder.exe`

Then it started successfully.

Like this:

![](https://bugs.cc/images/how-to-use-thunder-login-account-under-debian/thunder-main-window.png)

## Why is there a black window?

The black window is a browser, Thunder's bundled XBrowser. My guess is it is a DLL issue. When I have time, I will find a Windows machine and see which DLLs this browser depends on. The browser does not matter. You can still download without it.

## Login

Here is the important part. When you click login, it asks for the account and password.

![](https://bugs.cc/images/how-to-use-thunder-login-account-under-debian/thunder-login-dialog.png)

You will notice that the string you type does not show. Don't panic. It is like typing a password in a Linux terminal. You did type it, it is just invisible. Then you can log in. But sometimes a captcha box shows up.

![](https://bugs.cc/images/how-to-use-thunder-login-account-under-debian/blank-captcha-dialog.png)

Then you find, annoyingly, that the captcha has gone to shit. So now we solve that. Think about how a captcha works. When I click "Can't see it, get another", it must send a packet, then return a new captcha packet. We only need to intercept that data. I used Wireshark to capture packets.

To install Wireshark on Debian, add the Kali repos, then `sudo apt-get update&&sudo apt-get install wireshark` is enough. Remember to run it with `sudo wireshark`.

![](https://bugs.cc/images/how-to-use-thunder-login-account-under-debian/wireshark-capture-interfaces.png)

My interface here is wlan0. Yours may differ. Pick the one that looks right.

Then you will see a lot of packets.

![](https://bugs.cc/images/how-to-use-thunder-login-account-under-debian/wireshark-packet-capture.png)

At this point, in Filter, enter `http&& http contains "image/jpeg"`

Then open Thunder and log in. When the captcha shows up, switch back to Wireshark and look.

![](https://bugs.cc/images/how-to-use-thunder-login-account-under-debian/wireshark-jpeg-filter.png)

Select it (click once so the background turns blue).

Then File->Export Objects->HTTP

![](https://bugs.cc/images/how-to-use-thunder-login-account-under-debian/wireshark-export-objects.png)

Select the one whose address is `verify2.xunlei.com` and whose Content Type is `image/jpeg`, then save as xx.jpg.

![](https://bugs.cc/images/how-to-use-thunder-login-account-under-debian/http-object-list.png)

![](https://bugs.cc/images/how-to-use-thunder-login-account-under-debian/save-object-dialog.png)

![](https://bugs.cc/images/how-to-use-thunder-login-account-under-debian/saved-captcha.png)

Use the captcha to log in.