如何查找和播放 Lynda.com Android 或 Windows 应用程序下载的视频 [英] How to find and play videos downloaded by Lynda.com Android or Windows app

问题描述

有一个应用程序可以通过他们的 Android 和 Windows 应用程序下载他们的视频以供离线观看.我想知道这个应用程序在哪里保存这些视频，如果它们被加密，如何解密和播放它们?

There is an App which features downloading their videos for offline viewing via their Android and Windows app. I was wondering where does this app saves these videos and if they are encrypted, how to decrypt and play them?

我是一名程序员，但我对 Android/Windows 应用程序开发一无所知，以下是我迄今为止能够破解的内容:

I am a programmer but I know nothing about Android/windows app development, here is what I have been able to hack so far:

它似乎将视频保存在

/storage/emulated/0/Android/data/com..android.root/files/videos//encrypted/

/storage/emulated/0/Android/data/com..android.root/files/videos//encrypted/

这些文件没有扩展名，我将它们复制到我的笔记本电脑并尝试提供不同的流行媒体扩展名，到目前为止在 WMP、VLC 和Quicktime 播放器.

These files have no extension, I copied them to my laptop and tried giving different popular media extensions, nothing worked so far in neither of WMP, VLC & Quicktime Player.

我尝试使用 TrID 识别文件类型(如 此链接 并且此实用程序表明它是一个 mp3 文件(虽然它应该是一个视频)，我将扩展名更改为 mp3，它也不起作用.

I tried to identify file type using TrID (as specified in this link and this utility suggests it is an mp3 file (while it should be a video), I changed the extension to mp3, it did not worked either.

我尝试在 ISO buster 和其他几个应用程序中打开文件.最后，在尝试不同的事情时，在 android 系统本身上，当我选择计算检查的选项时，它会显示一些 MD5 和 SHA-1 值.我对这些术语不太熟悉，但我发现，这些文件似乎是加密的.

I tried opening the file in ISO buster and several other apps. Finally while trying different things, on android system itself when I choose the option to compute checks, it display some MD5 and SHA-1 values. I am not much familiar with these terms but figured out, these files seems to be encrypted.

如果我尝试在 Android 上直接打开此文件，系统会开始生成 Hex Dump，然后文件资源管理器崩溃.

If I try to directly open this file on Android, System starts generating Hex Dump and then file explorer crashes.

现在如果这些文件真的是视频文件并且经过加密，有没有办法可以解密它们并直接在视频播放器中播放?

Now if these files are really the video files and are encrypted, is there a way I can decrypt them and play directly in a video player?

我发现应用文件存储在:

I found App files are stored at:

C:\Program Files\WindowsApps\.com..com_1.5.0.2_neutral_split.scale-140_

C:\Program Files\WindowsApps\.com..com_1.5.0.2_neutral_split.scale-140_

C:\Program Files\WindowsApps\.com..com_1.5.0.2_x64__

C:\Program Files\WindowsApps\.com..com_1.5.0.2_x64__

C:\Program Files\WindowsApps\.com..com_2015.924.1324.2728_neutral_~_

C:\Program Files\WindowsApps\.com..com_2015.924.1324.2728_neutral_~_

我能够弄清楚如何为当前登录的用户分配权限并获得访问这些路径的访问权限，但根本无法在这些文件夹中找到加密或未加密的视频文件.

I was able to figure out how to assign privileges to currently logged in User and gain the access to reach at these paths but couldn't make any further progress to find encrypted or non-encrypted video files in these folders at all.

我明白，如果我真的只想下载视频文件，有更好、更简单的方法 - 直接登录他们的网站并使用任何视频采集器应用程序或扩展程序，就这么简单，确实有效.

I understand that if I really just want to download the video files there is much better and easier way - directly log in to their website and use any video grabber application or extension, it's as easy as that, which does works.

但我在这里的目的不是下载视频，而是我只是想通过道德黑客来学习和探索事物.只是想了解是否可以解密，找到合适的扩展名并在没有应用程序的情况下直接播放它们.Android 和 Windows 应用程序实际上在哪里将这些视频存储在我自己的设备上，如果没有应用程序，我将无法访问/播放这些视频.嗯，应用程序开发人员干得好！

But my intention here is not to download videos but rather I am just curious to do ethical hacking for learning and exploring things. Just want to understand whether it is even possible to decrypt, find appropriate extension and play them directly without the app or not. And where does both Android and Windows Apps are actually storing these videos on my own device which I am unable to access/play without App.. huh well done app developers!

感谢任何帮助或指示.

推荐答案

我也在想同样的事情，我用windirstat做了一些探索，发现了一大堆文件:

I was wondering the same thing and I done some exploring with windirstat and found a large bunch of files at:

C:\Users\*username*\AppData\Local\Packages\lynda.com.lynda.com_0dmhem0sv94sr\LocalState\offline\194074

它们是 .file 但较大的是视频，它们在 vlc 中播放良好.如果您愿意，可能会弄乱它们并在末尾添加 .avi 或其他内容以保持完整性..

They are .file but the large ones are the videos and they play fine in vlc. Could probably mess around with them and add the .avi or whatever, to the end for completeness if you wanted..

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