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

[mobihen87]

I did say i've got it, but after no luck downloading correctly, I suspect that i didn't get it right, and it seems that is the only problem or at least I want to verify this part is OK for sure.

Can you please show what should I take for example?

[larley]

Filter for 'method:POST', and it should be clear what URL you need. If you're not sure, filter for 'widevine', 'drm' or 'license' / 'licence'

[mobihen87]

when trying to paste:
I get an error that I need to put the PSSH manually.
How would I get it? is it even the right one?

fetch("https://BUSINESS.udemy.com/media-license-server/validate-auth-token?drm_type=fairplay&auth_token=eyJhbGciOiJFUzI 1NiIsInR5cCI6IkpXVCJ9.eyJjb3Vyc2VfaWQiOjIyNTkxMjAs InVzZXJfaWQiOjIyNDYwMjEzNCwidXNlcl9hZ2VudCI6IlBDIC 8gTWFjIE9TIFggMTAuMTUuNyAvIFNhZmFyaSAxNy42IiwiZXhw IjoxNzI0NTc4NjEyfQ.BG-4Xmi-LlF7ziD-SqRm-FtmmU0h5M-hbE38unxJRS-13iKr8gYBNqRG54_7zrowvnQsjJUsIYuvZ8DU3wI1EQ&CMCD=o t%3Dk%2Csid%3D%2268bf08dc-b8d3-4f5e-9ed6-5961a953a99a%22%2Csu", {
"body": "spc=AAAAAQAAAACL4ScwOjgpeWC2fA3Nt0+2w8kN9d+GJlO9o Q3z78QLUxilcdVgzMoL1YmWoG3jDmQJmHrIUVPb8M6g2LWtOg1 mTksweh5iEZfCVQ9+42AICsLiIIykqSWx5REXkyvwCRrRiSa+4 lQRxJWxLOFNR1nHMtVdZNLrKLLjm4ZU+vNb1PAYcTLDYG/8U1wPNaFYmNWTMGBFr+IHfgQmEGcAyYNbachYZwAAGnDvtMLjo drZYDGsWcfWSz/Gqg2zDIbr3toi9wJpE2wBkyhMJoX5t7JWP4iDsfrnAYnUQSfth lNt1HPiOL3JSLFkTaYca+GvCO9ox/jALbXQ9dWWdIFPoEbXU/F8it7KIZus4IAPxjmRdusn5d50f+Sqt8nEpzRAXfgau69aHdWM KoK0rPn9EREqGcfxpxvjYAHkDnYpK+E43iKoZaiCHtxUU+27Ae aMZbJh6JnI6T0Xtwf/q+xXU/bgShXos/Os45dLRtUl3/hiZucuJ2pb+s5Q0IAL7GTzKLoj8a644feKB7N+RSJD3wknnSmF diBxoWwfISswntuYuQu7FPbPn2KmIXUM11MCA2ELsx0TPdcs7X Jn/BRUGu2ahjkTX83FAPQFdvAHdvHP8ucD/utaZ2FWBqRO3Ani7G/AfaQExjdZL4v6J36XzWE3G7KgJqQ1MzOMAc9fuzTKqPqcMSVlk Adrqyo+4MzHRcnDRZBr7S1iLM1UMNFA4H7wkBpRC7SSSsxIB3m ZBxiD2Np6k11vBRAxbAiDIGFvK0XC7gF07FmUr9NhhiV2inJSI 0YJP5pm1B82ZB9amiIbeYRXaVMDt+bOBtEgOj6IfnfzWNAz8K9 1H8GSY7p+0MjBuoGKZHQCdUXCtMYt2LPG0BDmygFpYHBmacIaa jmXJ2hi6LFK/aucV+P+vpMKI1ypJpYCj4pmT7xkQ4wIk/o+txwZk303OFBXfayHZJgWzJfFOSZzSX3jhTWOie6u/Hb3n5DUpiE/rZng1yVNUhz+EfRC32zzYZv0Hd3r/Qbd68DlOLbja4f+U1b2DSfwpv9RTXkQCbDmuooukfX2PNtNY4H CY5VVnPo5Z9stUNN/kNUKdtw2kElraPqv4P/sXvpgf+shx1Qxdplq7yxTUK7OsuS0Ia0gd22a0YbhcxkMBm5Hx uj8Jyl7Ai/6kSC8hQ5K0qiU77VOoxXPKHBedLtrMkSzuNfXpGtdX+wpYEEG5 GeSIIuujcJjtGzeNyjhlkEwgzO5dbCwu24rB2hdOg/ch9dzQK5+Vw4H1qEyNSahUtXTfx2w4FCHeJqcx8Tgv03cNMcM4 kAH0lVh4OEyKmTS6XUshce+B4W+fYsZbqpvy9i0HKFC6qSZIQI Ezaz9CkNn4Dj2GZL+9wx+Otv9Ys1+9GfR0ikTSx+9ejonO9WUf 0t6bov/mGqzn06ud7Uvqauih+z7OH/YvSlovL3l3F7/FdzEyeGBRAOUCkCBvET2k8dkHQb//t46BX0g2YWcjyqMApgs1dgfRGAvCo12lvUgEjppPmPGGNUcllt NsWLtwT1cd127byIyAGsr1UL40n4rEil73cE2S6YGJt/j0F8g+A/Vg4XjKBE0/S6cq2TDeyCWvfLuIPNWG55d994Dekju6oPwgz/BG/2uS9VKE91kKBeLOwujwL6Ci7iI5HK5XA6QigOPl3KlxGD74XCu IHhkTv9p3VLsUiJxh3CMlPkxgFozq+e6GvwGVjJUke/aMz/spW0IzY+p0fG5L59LwVyCSXPNdYZdWDA6h3KNht5Av8DWITQ/VKChd/LpdaN8/VxZVWC8PziUYlHtUXyh8s4gY918rKpRf4HWb30bU8I3JEXxm32 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"cache": "default",
"credentials": "include",
"headers": {
"Accept": "*/*",
"Accept-Language": "en-GB,en-US;q=0.9,en;q=0.8",
"Content-Type": "text/plain",
"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Safari/605.1.15"
},
"method": "POST",
"mode": "cors",
"redirect": "follow",
"referrer": "https://BUSINESS.udemy.com/course/flutter-bootcamp-with-dart/learn/lecture/14481776?start=75",
"referrerPolicy": "strict-origin-when-cross-origin"
})

[larley]

The request says 'fairplay', which is Apple's DRM System. You need to use a different browser

[mobihen87]

I've got the keys finally. THANKS!
it seems that udemy downloader isn't able to download the course still with this key pair... :/

[senkron24]

i dont understand what is impersonate chrome ?

for me ist perfeckt sulotion becouse befor was not work with same bud with this option now so nice

[larley]

It uses the curl_cffi library to impersonate chrome's TLS fingerprint. On what service did impersonation work for you?

[senkron24]

It uses the curl_cffi library to impersonate chrome's TLS fingerprint. On what service did impersonation work for you?

its wroking for allente denmark now. befor not work any variant.!
i try all steps only with normal wks scripts was working/./

[MissDK]

yes remain unsolved

You are talking only nonsense. If you even took a look at the sticky threads, you would have found, not only a downloader, but also the code for you to copy paste. You want everything spoon fed to you lol, at least be true to yourself and don't pretend otherwise

import re
from urllib.parse import urlparse, parse_qs, urljoin

import requests

import json

from pywidevine import PSSH, Device, Cdm


# Metadata URL RegEx: https://gizmo\.rakuten\.tv/.*/avod/streamings.*

def filter_dict(
        dictionary: dict,
        keys: list
) -> dict:
    return dict(
        (k, v)
        for k, v in dictionary.items()
        if k in keys
    )


def create_metadata(
        metadata: str,
        metadata_body
) -> tuple[str, dict, dict] | None:
    try:
        parsed_body = json.loads(metadata_body)
    except Exception:
        return

    parsed_url = urlparse(metadata)
    query = parse_qs(parsed_url.query)

    url = urljoin(metadata, parsed_url.path)

    params = {
        "device_identifier": "android",
        **filter_dict(
            query,
            [
                'classification_id'
            ]
        )
    }

    json_body = {
        "player": "android:DASH-CENC",
        "device_stream_video_quality": "HD",
        **filter_dict(
            parsed_body,
            [
                "hdr_type",
                "audio_quality",
                "content_id",
                "audio_language",
                "video_type",
                "device_serial",
                "content_type",
                "subtitle_language",
            ]
        )
    }

    return url, params, json_body


def create_manifest(metadata: str, metadata_body):
    if new_metadata := create_metadata(metadata, metadata_body):
        url, params, json_body = new_metadata
    else:
        return

    metadata_request = requests.post(
        url=url,
        params=params,
        json=json_body
    )
    if metadata_request.status_code != 200:
        return

    return metadata_request.json().get('data', {}).get('stream_infos', [{}])[0].get('url')


def create_license(metadata: str, metadata_body):
    if new_metadata := create_metadata(metadata, metadata_body):
        url, params, json_body = new_metadata
    else:
        return

    metadata_request = requests.post(
        url=url,
        params=params,
        json=json_body
    )
    if metadata_request.status_code != 200:
        return

    return metadata_request.json().get('data', {}).get('stream_infos', [{}])[0].get('license_url')

if __name__ == '__main__':
    url = input("gizmo url: ")
    json_string = input("json string: ")

    manifest = create_manifest(url, json_string)
    print(manifest)
    license_url = create_license(url, json_string)
    print(license_url)

    pssh = str(min(re.findall(
        r'<cenc:pssh\b[^>]*>(.*?)</cenc:pssh>',
        requests.get(manifest).content.decode()
    ), key=len))

    pssh = PSSH(pssh)
    device = Device.load("device_wvd_file.wvd")
    cdm = Cdm.from_device(device)
    session_id = cdm.open()
    challenge = cdm.get_license_challenge(session_id, pssh)

    licence = requests.post(license_url, data=challenge)
    licence.raise_for_status()
    cdm.parse_license(session_id, licence.content)

    for key in cdm.get_keys(session_id):
        print(f"[{key.type}] {key.kid.hex}:{key.key.hex()}")

    cdm.close(session_id)

Output:

https://prod-kami.wuaki.tv/v1/delivery/dash/avod/61cd9037-392f-4ac8-9296-572856989577.mpd
https://prod-kami.wuaki.tv/v1/licensing/wvm/7dc64863-845b-473f-9c14-25910a906646?uuid=7dc64863-845b-473f-9c14-25910a906646
[SIGNING] 00000000000000000000000000000000:76c51160d4bf1d8c61b49fb0962f2f12202ca22ca2917654fc11c139e142dd7ba38d35049a9b1c786326facc58babe551cf26b7d3a829890e0c02733e2f7fbe3
[CONTENT] e858050ae6505ebf723824aaaac165e3:0ab133fa9a00f82837bb1f1e023823f4

Local file needed cdm wvd: "device_wvd_file.wvd"

Hi

I have tried the script and acquired an L3 CDM that works - the device_wvd_file.wvd.

However, I can't get it to work because the pywidevine folder is not the same as the one you are using.

Is there any place where I can find your pywidevine folder so that I can just use my own device_wvd_file.wvd?

Best regards,
MissDK

[2nHxWW6GkN1l916N3ayz8HQoi]

However, I can't get it to work because the pywidevine folder is not the same as the one you are using.

Is there any place where I can find your pywidevine folder so that I can just use my own device_wvd_file.wvd?

I don't understand. What error do you get exactly? Missing package? You need to install pywidevine using pip
https://pypi.org/project/pywidevine

If you're using the wks-keys pywidevine, you could remove it, or if you have existing scripts that depend on it, set up a virtualenv to separate the 2 pywidevines

[Tifosodoc]

Hello I tried to install the Larely's program, but I am stacked with this error No widevine device detected inside the CDM directory.

[senkron24]

Hello I tried to install the Larely's program, but I am stacked with this error No widevine device detected inside the CDM directory.

you have to put your own wvd in the folder

[senkron24]

It uses the curl_cffi library to impersonate chrome's TLS fingerprint. On what service did impersonation work for you?

its thare anyway to get with vituel cmd amaz...

[larley]

what?

[Tifosodoc]

I just wanted to take a moment to express my gratitude to @larley for creating this fantastic tool. It performs remarkably well with a wide range of videos, and while a few might not work perfectly, it still offers so much value. Thank you again!

[larley]

AMZN 480p may or may not be supported now

[senkron24]

AMZN 480p may or may not be supported now

thx have try bud not succes will try again

[[ss]vegeta]

Marvelous tool, thanks!

[senkron24]

sorry all ok

[larley]

I don't want to hear anything about this module here or a specific person will hunt me down

[Tifosodoc]

Hello what it means this error?
[Attachment 81931 - Click to enlarge]

[larley]

Can you post a video link? This shouldn't happen

[Axymeus]

I am getting a similar issue as #201, just with a different wording. Some form of authentification is required and account credentials need to be sent through cookies. Unfortunately they are not copied when using "copy as fetch", but the cookie can be manually reinjected in the fetch request. Cumbersome but working.

Sadly in my case, while WidevineFetch did manage to receive the excepted licence from the licence server, it doesn't know what to do with it. I think it's not exactly a widevine licence unfortunately.

[larley]

Use "Copy as Fetch (node.js)" in chrome to also copy the cookies.
I could help you with the response if you post it here (or send a PM if you don't want to post it publically)

[Axymeus]

Ah right, I am using firefox. But indeed when using chromium based browsers I have the node.js variant of fetch which does work in this case, although I have to enter the pssh manually.

The licence server responses look like this.

{
    "keys": [
        {
            "kty": "oct",
            "k": "fbWhuS0-WT6pUEQ083LxkZR1pI5beRLPkTaCmwC_MVwvtOOPvZImX-hWSgrxUqMO8g068GoIUSKaGC1w0YfGfyRjQ_HNa9xJOHe2fUayX9pANhqxHsyrwTLwjqNltHbmPF6NMStfPyoDAKLCm_FdGVuUjAl-O1EcPo3amzqKeGTua468s-_Cb7gA7pWmf33gv5zNSpq87aU6pMGYg_BWfoCl_FcQW7Qd5ol61zymiMgWm9FYn5xgEoonFRp8VNoYLaASIj5PmprH8-raZMe9L_gCCC1CqFH7brcKTDo7DxZaSzzdIV4dLdSLbH6YfkQL0THr3ocrZOi6wVczx956sg",
            "kid": "XSttj42FOQ-YkhBqYex1sA"
        }
    ],
    "type": "temporary"
}

Apparently the key itself is further encrypted, the request to the licence server contains additional payload which is probably used in that regard.

{"kids":["XSttj42FOQ-YkhBqYex1sA","AAAAAAAAAAAAAAAAAAAAAA","eyJ2IjoiMiIsImZpZCI6Ig","aF85MTB2cnRtMDA1MDMiLA","InN2aWQiOiJkaWdpdGFsIg","LCJwbCI6ImV5SndhV1FpTw","aUpvWHpreE1IWnlkRzB3TQ","RFV3TXlJc0ltUmxiR2wyWg","WEo1WDNSNWNHVWlPaUp6ZA","Q0o5IiwiY3MiOiJjZGY1Yw","ODU2NTFiZTZmZDY5NjY1Yw","MTVhNWQxNzdlODYifQAAAA"],"type":"temporary","spki":"MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAws_R9o5jfe448hx6yJWPQiSmU7WrOrSNsPKHZnBxg6ZpYR5aKDU69ha2lGQM_ooEG0RgZnCrTLD4_72xF5LgeBQ_qa9BDGvtcLoh9frPrD0Gn-Zwacy-NLy8QF12H-uDIAjgUq_mlneOEapVLhV3GU70FeS-8C9c7M58OOmvpLZDHjrDOl3nvnjNrvKTP68dqwQRmmEB5xto4Fwj594zrFsVdxoqndeJfEdEDxp1DZDdpfDSGcEvDn8UpUz6Z3sOi5_pttFteldtX5j1qDcwG1PhLUlzJ-a_AXLPnR33i5BcDbxGjhJvcn7SVCloVtOGrEbooDMD9_MrVXRNCldnCQIDAQAB"}

If the encoding can be figured out, I wonder if your app could handle it as well?

EDIT: Unfortunately the source website cannot be provided... I do not want to further inconvenience anyone. Do tell if you think this is an interesting challenge to tackle (it's still a drm you may wish to support in your app) and I'll reach out in private, thank you.

[larley]

I will take a look but I need the name of the site this is from

This has nothing to do with Widevine, so there's no reason to implement it into WidevineFetch

[larley]

Solved: https://github.com/DevLARLEY/ClearKeyRSA
Key:

5d2b6d8f8d85390f9892106a61ec75b0:4d0470854fe060073c5055a168d13686

[lomero]

W-O-W yu're the best

[Axymeus]

I'll say it again publicly. Thank you very much for your hard work larley, you're a real life-saver

[MastersTR]

Solved: https://github.com/DevLARLEY/ClearKeyRSA
Key:

5d2b6d8f8d85390f9892106a61ec75b0:4d0470854fe060073c5055a168d13686

larley
I claim it's the best.
if he has time. It helps everyone.