How to catch a flash stream url from browser plugin

Question

My question has similar point like this one.

I’m wondering how I can catch a media URL which SWF loads from browser add-on. Let’s say YouTube flash player starts playing or loading some video (let it be via http) and I want to know that url. Just like browser plugins from “RealDownloader” and “Moyea YouTube FLV Downloader” does. I’m newbie with plugin development and flash and I want to know what technologies it may be. XPCOM, NPAPI, ActiveX, or simple API hooking. Any ideas how this may be accomplished?

score 1 · Answer 1 · answered Sep 06 '12 at 14:03

NPAPI plugins typically ask the browser to load data for them, they don't do it themselves. This means that a browser extension can intercept these requests. This can be done for example by implementing a content policy. Requests initiated by a plugin will cause a shouldLoad call with type OBJECT_SUBREQUEST.

The simpler option is using HTTP observers - but this way you won't recognize requests initiated by Flash, they will look just like any other request processed by the browser.

score 0 · Answer 2 · answered Sep 06 '12 at 14:03

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Firebug does that, and it's open source. Why not study it a little?

https://github.com/firebug/

answered Sep 06 '12 at 14:03

Marcelo Assis

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Firebug is a huge bloated monster, "study it" is bad advise. For reference: Firebug uses HTTP observers (see my answer). – Wladimir Palant Sep 06 '12 at 14:05
To ask for someone study a open-source project is never a bad advice, IMHO. also, the OP said he's newbie with plugin development. – Marcelo Assis Sep 06 '12 at 14:11
Thank you Marcelo. I can look at FireBug but I don’t have a plenty of time to study it. – Nazar Grynko Sep 06 '12 at 15:37

score 0 · Answer 3 · answered Feb 05 '19 at 07:21

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It's easy if you only want to get the url from a single swf in a single website. for example if all you need are urls from that swf,you can keep only one instance of your browser open and use a tool to intercept its http requests.

answered Feb 05 '19 at 07:21

swfprotection

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Yes, I realized it could be a comment,thanks for reminding me. – swfprotection Feb 05 '19 at 07:38

How to catch a flash stream url from browser plugin

3 Answers3