[Release] WidevineFetch - Keys from just the License URL; Any Lic. Wrapping

[larley]

Hi all,
this is WidevineFetch, a program that just requires a 'Copy as fetch' input (and an L3 CDM of course) and nothing else.

What it does:
The program will parse the given input, and extract the Request URL, headers and body.
It will locate the license request inside of the JSON (if it's not just bytes), extract the PSSH, generate a new license from that PSSH and replace it.
It will also extract the license from the response, if JSON.
The PSSH has to be entered manually if the service doesn't send the license request (just the first request) when blocking the URL (can be seen on the last service in the demo video).

A demo video is available here (or just on the GitHub page, as well as installation and usage instructions).

Finally, no more custom scripts (mostly).
Hope you like it.

[Germania]

Install the requirements.txt file

Nothing there

[larley]

Install the requirements.txt file

Nothing there

fixed

[kingkong0]

look you simplified life, I have to give you my compliments

[larley]

look you simplified life, I have to give you my compliments

That's exactly what this program is supposed to do

[bmfexp]

cant seem to fine my wvd even when in cdm folder?

[Germania]

Install the requirements.txt file

Nothing there

fixed

ah, my mistake - i installed google in venv not google-api-python-client

cant seem to fine my wvd even when in cdm folder?

My Win needed change
CDM_DIR = './cdm' instead CDM_DIR = '../cdm'

but now it works also fine with Python 3.10 - thanks

[whs912km]

thank you for this new guesser, but i've put my cdm on cdm folder but the guesser can't find cdm ...

what's wrong ?

[Flippi]

@whs912km the answer is just one post before yours

[larley]

That's such a PyCharm issue. I had my 'cdm' folder in the same dir as the python file, but then decided to move all of it to a separate folder as there were some other files inside the project directory (except the 'cdm' folder). The problem is, PyCharm just silently refactored the code without me knowing.

[larley]

thank you for this new guesser, but i've put my cdm on cdm folder but the guesser can't find cdm ...

what is wrong ?

That has been fixed, see the updated file on GitHub.

[whs912km]

yes now work fine. amazing tool. thank you mate

[ehurdler]

This is great! Thank you!

[lomero]

another wonderful guesser, very easy to use. a big thank you @larley for this new tool

[kingkong0]

@larley

I've tried several sites and they all work perfectly, but I found one that crashes because it doesn't detect pssh, and a site with no login do you want to check it?

[larley]

The funny thing is that I just updated the script to fix that exact problem, so try again with the updated version (this was changed).
But I'd still like to know what that site is...

[kingkong0]

The funny thing is that I just updated the script to fix that exact problem, so try again with the updated version (this was changed).
But I'd still like to know what that site is...

yes just downloaded, and it crashes as well, I sent you a private message

[larley]

The Challenge sent by that service can't be parsed as a SignedMessage for some reason (will investigate).
I've pushed an update out so that the .ParseFromString() function is also inside of a try/catch block. It works now by specifying the PSSH manually, but again, this shouldn't happen (parsing the Challenge logged by EME works of course).

[kingkong0]

The Challenge sent by that service can't be parsed as a SignedMessage for some reason (will investigate).
I've pushed an update out so that the .ParseFromString() function is also inside of a try/catch block. It works now by specifying the PSSH manually, but again, this shouldn't happen (parsing the Challenge logged by EME works of course).

yes I confirm you, I just used your latest release and it asks me for the manual pssh I enter it and it works. I wanted to edit it and do the exact same thing, what can I say you did an excellent job. You passed as well [Release] Widevine L3 Guesser Extension you eliminated so all the patterns to run

[larley]

Thanks for the feedback!

The Challenge from the EME Logger contains 'conax.com' in the providerId field, whcih redirects to Nagra Kudelski, so this is gonna get interesting...

[kingkong0]

Thanks for the feedback!

The Challenge from the EME Logger contains 'conax.com' in the providerId field, whcih redirects to Nagra Kudelski, so this is gonna get interesting...

fully agree

[MastersTR]

signed_message.ParseFromString(message)
google.protobuf.message.DecodeError: Error parsing message


There is a message error

[larley]

That has already been fixed, so the program won't crash (so get the lastest version). It shouldn't though, send your input fetch.

[billybanana]

Nice work. Always great to have more options available.

[larley]

The script has been updated, so you don't have to paste anything anymore, just click process. This also lead to Discovery+ and Zee5 (and surely many others) working, as the QTextEdit box wasn't taking non-breaking spaces (0xa0).
The TextEdit box is now locked, so you can't edit its text and the font has been set to a monospaced font, so the keys will be displayed currectly with the new window start-size.

Be sure to also install the updated requirements.txt file, as it was changed too.

[Attachment 81152 - Click to enlarge]

[MastersTR]

[Attachment 81154 - Click to enlarge]


[Attachment 81155 - Click to enlarge]

I'm getting cdm error


await fetch("https://widevine.tvplus.com.tr:8063/?deviceId=NzM0NzNhNDktYTA3YS0zMjc1LWFhMzYtZDAzOWVi ODM1Zjdl", {
"credentials": "omit",
"headers": {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.0",
"Accept": "*/*",
"Accept-Language": "tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3",
"Sec-Fetch-Dest": "empty",
"Sec-Fetch-Mode": "cors",
"Sec-Fetch-Site": "same-site",
"Priority": "u=4"
},
"referrer": "https://tvplus.com.tr/",
"body": "\b\u0001\u0012¹,\u0012h\nf\nP\b\u0001\u0012\u0010 •ò…\b^rÝ�lõ\\a\u0007EZf\u001a#https://widevine.tvplus.com.tr:8063\"\u000er=54828&s=1070* \u0005SD_HD\u0010\u0001\u001a\u0010\u000eÊè7Ã,@2µœ _¬¿\u0005Ÿ‚\u0018\u0001 Ķ¸µ\u00060\u00168€»ÆvB°+\n\u0014license.widevine. com\u0012\u0010\u0017\u0005¹\u0017Ì\u0012\u0004†‹\ u00063:/w*Œ\u001að(ÉÊ¢Y ãýCè¥)ÌÞÉ–�@÷©âè§äм±Õ;£‡z´%4}1c_˸–0Çf\u0004\nkê qé\u001d�˜\u0015†v\u0006ÜŸ,E…ñ\u001fòû0PbÖ©F\u001d ¸·¨Üa\u0001Š\u000e\u0011øR�5\u0006¦PÚ<o%ýY7\u001e7 ¥+%ëêþ\u001c6¥¶™êáç7C°pþ’\u001b\u001ešqšz\u0004Rª ¯ïÊâôß\u0004`�+rR¨\u0000Œ7RŠ\u0005ú\u0010ï{ N\u0006Ê\u000bBŽ�fÖL=ß\u00140⪶¶1ñù¤úå»u>eÇ3†�N¬# ¿\u000e0Îb\u001eÊ·\u0002(º9R\u0013½úMù‚ÔSøy\r»\u00 0e¥\u001c/Pe';˜{�º�S8¢57ÞÇŠBjÉ)#ˆ|xAþkiøh‚³Ôκ/Til¥µ¡\u0016eï\u001a¡]et^Ïý*³¶õÀêD$½áðßÆP+çÀÀº��t?D嘧ÀS‚\u000eÎÑ1ù\\\u0 01e@¿Ö\r7O\u0016Õ\r#;Aœ*Þ®\u001aÖ�vñ\u0011f±\u0017 n\tCç¤�\u0007:´èÝ%‡BœñJ¨7Í\u0019”Cc\tYë4¤Õòutý�º~\ u0003\u0010*�\u0000öN{rp´´|NJÇ]í\u0013.Ççü\u001eØ|§â«e&0Æ\u0014à~¾7úB\u0002\u0002 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"method": "POST",
"mode": "cors"
});

[Obo]

Yep, that fixed it for me as well when using brave browser. But as you wrote, it's probably independent of the site, but rather dependent on the payload, if the culprit was breaking spaces. I guess it took some brain work to find the issue - nice find!

[larley]

I'm getting cdm error

what the hell? I'll investigate this... This is the second time is impossible error has occurred.

[larley]

Yep, that fixed it for me as well when using brave browser. But as you wrote, it's probably independent of the site, but rather dependent on the payload, if the culprit was breaking spaces. I guess it took some brain work to find the issue - nice find!

At first I though that it was some custom Protobuf encoding, because this only occurred when the license provider was 'conax.com'

[larley]

I'm getting cdm error

fixed, seems like you were running the file from not inside the directory of widevine-fetch.py (and you now don't need to)