Impossible site using hidden encryption blocking downloading

[TatsP]

Hello, I am trying to download a free course but it has some hidden widevine encryption which blocks the keys. Can someone help me?

[iamghost]

we cant help you without video URL

[pram0dm]

In case you didn't see me earlier here, let me ask again.

What do you stand to gain by downloading a course that's already free? Give me a valid reason.

[TatsP]

In case you didn't see me earlier here, let me ask again.

What do you stand to gain by downloading a course that's already free? Give me a valid reason.

The courses are available for free only for a limited time hence they cannot be used later for revision or if you cannot complete them then they become paid hence why if I can store it then I can use them again when I want.

[TatsP]

we cant help you without video URL

https://maang.in/
This site uses vdocipher which is impossible to break.

[Novia]

['bd896923358f50318c64abc98fb86357:4e22d9d1b5b689eb bd157012b3c84df3', '51d763d2542e528bb8e9e290e372ec44:264998d3799b6316 c0086e7062f22715', '52d99926f26d5fd58d4f49b49bfe1a67:dab3d77e680aa6c6 aeacdbad06b10208', 'bac9f053f0de57139e6dc85952f83a7a:9352fcbfb654c009 a258f437b892f207']
https://d1v1gqjht5uu1.cloudfront.net/media/z4yngqi7bl5Wj/5063bdd8/stream.mpd

[lomero]

This site uses vdocipher which is impossible to break

nothing is impossible. if you can play, you can down

[pram0dm]

https://maang.in/
This site uses vdocipher which is impossible to break.

Novia just cracked it !

...

Use code blocks to make them look even cooler.

bd896923358f50318c64abc98fb86357:4e22d9d1b5b689ebbd157012b3c84df3
51d763d2542e528bb8e9e290e372ec44:264998d3799b6316c0086e7062f22715
52d99926f26d5fd58d4f49b49bfe1a67:dab3d77e680aa6c6aeacdbad06b10208
bac9f053f0de57139e6dc85952f83a7a:9352fcbfb654c009a258f437b892f207
https://d1v1gqjht5uu1.cloudfront.net/media/z4yngqi7bl5Wj/5063bdd8/stream.mpd

[TatsP]

['bd896923358f50318c64abc98fb86357:4e22d9d1b5b689eb bd157012b3c84df3', '51d763d2542e528bb8e9e290e372ec44:264998d3799b6316 c0086e7062f22715', '52d99926f26d5fd58d4f49b49bfe1a67:dab3d77e680aa6c6 aeacdbad06b10208', 'bac9f053f0de57139e6dc85952f83a7a:9352fcbfb654c009 a258f437b892f207']
https://d1v1gqjht5uu1.cloudfront.net/media/z4yngqi7bl5Wj/5063bdd8/stream.mpd

How did you obtain this keys? Does every video on the site have different keys or same?

[lomero]

each video have proper keys ... this is basic stuff dude

[TatsP]

['bd896923358f50318c64abc98fb86357:4e22d9d1b5b689eb bd157012b3c84df3', '51d763d2542e528bb8e9e290e372ec44:264998d3799b6316 c0086e7062f22715', '52d99926f26d5fd58d4f49b49bfe1a67:dab3d77e680aa6c6 aeacdbad06b10208', 'bac9f053f0de57139e6dc85952f83a7a:9352fcbfb654c009 a258f437b892f207']
https://d1v1gqjht5uu1.cloudfront.net/media/z4yngqi7bl5Wj/5063bdd8/stream.mpd

How did you manage to obtain this? Can you show me? There are plenty of videos I want to download but I cannot due to this restriction.

[TatsP]

each video have proper keys ... this is basic stuff dude

yeah I know that but vdocipher has no working tool online. It sends 2 requests which I am not able to figure out for license. The first request has token which gives response which is somehow fumbled into the token for second request which gives the license.

[Novia]

['bd896923358f50318c64abc98fb86357:4e22d9d1b5b689eb bd157012b3c84df3', '51d763d2542e528bb8e9e290e372ec44:264998d3799b6316 c0086e7062f22715', '52d99926f26d5fd58d4f49b49bfe1a67:dab3d77e680aa6c6 aeacdbad06b10208', 'bac9f053f0de57139e6dc85952f83a7a:9352fcbfb654c009 a258f437b892f207']
https://d1v1gqjht5uu1.cloudfront.net/media/z4yngqi7bl5Wj/5063bdd8/stream.mpd

How did you manage to obtain this? Can you show me? There are plenty of videos I want to download but I cannot due to this restriction.

You need a proper cdm first

import base64
import json
import re
from urllib.parse import urlparse
from urllib.parse import parse_qs
import requests
import xmltodict
from pywidevine.L3.cdm import deviceconfig
from pywidevine.L3.decrypt.wvdecryptcustom import WvDecrypt


def download(otp, playbackInfo):
    url = "https://player.vdocipher.com/v2/?otp={}&playbackInfo={}".format(otp, playbackInfo)
    html = requests.get(url, headers=headers).text
    title = re.search(r'"title":"(.*?)"', html).group(1)
    manifest = re.search(r'"manifest":"(.*?)"', html).group(1)
    cmd = "N_m3u8DL-RE.exe \"" + manifest + "\" --tmp-dir ./cache --save-name \"" + title + "\" --save-dir \"./vdocipher/" + "\" --thread-count 16 --download-retry-count 30 --auto-select --check-segments-count -M format=mp4"
    mpd_data = requests.get(url=manifest).text
    mpd = xmltodict.parse(mpd_data)
    pssh = mpd['MPD']['Period']['AdaptationSet'][0]['ContentProtection'][1]['cenc:pssh']
    data = {
        "playbackInfo": playbackInfo,
        "otp": otp,
        "href": url,
        "tech": "wv",
        "licenseRequest": "CAQ=",
    }
    stra = json.dumps(data, separators=(',', ':'))
    data = {
        "token": base64.b64encode(stra.encode("utf-8")).decode("utf-8")
    }
    widevine_license = requests.post(url="https://license.vdocipher.com/auth", data=data, headers=headers)
    license = widevine_license.json()["license"]
    decrypt = WvDecrypt(init_data_b64=pssh, cert_data_b64=license, device=deviceconfig.device_android_generic)
    data = {
        "playbackInfo": playbackInfo,
        "otp": otp, "href": url,
        "tech": "wv",
        "licenseRequest": base64.b64encode(decrypt.get_challenge()).decode("utf-8"),
    }
    stra = json.dumps(data, separators=(',', ':'))
    data = {
        "token": base64.b64encode(stra.encode("utf-8")).decode("utf-8")
    }
    widevine_license = requests.post(url="https://license.vdocipher.com/auth", data=data, headers=headers)
    if widevine_license.status_code != 200:
        print("Error", widevine_license.text)
    data = widevine_license.json()
    license = data.get("license")
    if not license:
        print("Error", data)
    decrypt.update_license(license)
    Correct, keys = decrypt.start_process()
    if Correct:
        print("获取key成功")
        key_string = ' '.join([f"--key {key}" for key in keys])
        cmd = cmd + " " + key_string + " --decryption-binary-path ./mp4decrypt.exe"
    print(cmd)


def get_otp(id):
    url = f"https://azbackend.com/resources/user/videos/{id}/otp"
    response = requests.get(url, headers=headers)

    data = response.json()["data"]
    otp = data.get("otp")
    playbackInfo = data.get("playbackInfo")
    return otp, playbackInfo


def get_vids(cid =7784):
    url = f"https://azbackend.com/resources/user/readings/{cid}"
    response = requests.get(url, headers=headers)
    data = response.json()["data"]
    content = data["content"]
    for i in content:
        data = i["data"]
        type = i["type"]
        if type == "VIDEO":
            video_id = data["video_id"]
            otp, playbackInfo = get_otp(video_id)
            download(otp, playbackInfo)

if __name__ == '__main__':
    authorization = "Bearer"
    headers = {
        "vdo-sdk": "VdoWeb/2.4.29",
        "authorization": authorization,
        "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 Edg/124.0.0.0"
    }
    get_vids()

[aqzs]

Okay I figured out that the code was using the old source code for pywidevine (which I never used before since I learned about CDM only 2 months ago). I'll try make the script work on my own thanks !

[aqzs]

I have a working script now but I can't get the license back
I collected every vdocipher error I think

widevine_license:  {"code":2042,"message":"This device is not supported. Please try on another device."}
widevine_license:  {"code":2021,"message":"Update browser/OS to watch video"}
widevine_license:  {"code":2042,"message":"Android system updates or update Chrome browser to play this video"}
widevine_license:  {"code":2046,"message":"Authentication failed"}
widevine_license:  {"code":2079,"message":"Device not supported"}

[pram0dm]

I have a working script now but I can't get the license back
I collected every vdocipher error I think

widevine_license:  {"code":2042,"message":"This device is not supported. Please try on another device."}
widevine_license:  {"code":2021,"message":"Update browser/OS to watch video"}
widevine_license:  {"code":2042,"message":"Android system updates or update Chrome browser to play this video"}
widevine_license:  {"code":2046,"message":"Authentication failed"}
widevine_license:  {"code":2079,"message":"Device not supported"}

You must use a CDM that was extracted from a REAL device. Emulator CDMs are not going to work with VdoCipher.

[TatsP]

['bd896923358f50318c64abc98fb86357:4e22d9d1b5b689eb bd157012b3c84df3', '51d763d2542e528bb8e9e290e372ec44:264998d3799b6316 c0086e7062f22715', '52d99926f26d5fd58d4f49b49bfe1a67:dab3d77e680aa6c6 aeacdbad06b10208', 'bac9f053f0de57139e6dc85952f83a7a:9352fcbfb654c009 a258f437b892f207']
https://d1v1gqjht5uu1.cloudfront.net/media/z4yngqi7bl5Wj/5063bdd8/stream.mpd

How did you manage to obtain this? Can you show me? There are plenty of videos I want to download but I cannot due to this restriction.

You need a proper cdm first

import base64
import json
import re
from urllib.parse import urlparse
from urllib.parse import parse_qs
import requests
import xmltodict
from pywidevine.L3.cdm import deviceconfig
from pywidevine.L3.decrypt.wvdecryptcustom import WvDecrypt


def download(otp, playbackInfo):
    url = "https://player.vdocipher.com/v2/?otp={}&playbackInfo={}".format(otp, playbackInfo)
    html = requests.get(url, headers=headers).text
    title = re.search(r'"title":"(.*?)"', html).group(1)
    manifest = re.search(r'"manifest":"(.*?)"', html).group(1)
    cmd = "N_m3u8DL-RE.exe \"" + manifest + "\" --tmp-dir ./cache --save-name \"" + title + "\" --save-dir \"./vdocipher/" + "\" --thread-count 16 --download-retry-count 30 --auto-select --check-segments-count -M format=mp4"
    mpd_data = requests.get(url=manifest).text
    mpd = xmltodict.parse(mpd_data)
    pssh = mpd['MPD']['Period']['AdaptationSet'][0]['ContentProtection'][1]['cenc:pssh']
    data = {
        "playbackInfo": playbackInfo,
        "otp": otp,
        "href": url,
        "tech": "wv",
        "licenseRequest": "CAQ=",
    }
    stra = json.dumps(data, separators=(',', ':'))
    data = {
        "token": base64.b64encode(stra.encode("utf-8")).decode("utf-8")
    }
    widevine_license = requests.post(url="https://license.vdocipher.com/auth", data=data, headers=headers)
    license = widevine_license.json()["license"]
    decrypt = WvDecrypt(init_data_b64=pssh, cert_data_b64=license, device=deviceconfig.device_android_generic)
    data = {
        "playbackInfo": playbackInfo,
        "otp": otp, "href": url,
        "tech": "wv",
        "licenseRequest": base64.b64encode(decrypt.get_challenge()).decode("utf-8"),
    }
    stra = json.dumps(data, separators=(',', ':'))
    data = {
        "token": base64.b64encode(stra.encode("utf-8")).decode("utf-8")
    }
    widevine_license = requests.post(url="https://license.vdocipher.com/auth", data=data, headers=headers)
    if widevine_license.status_code != 200:
        print("Error", widevine_license.text)
    data = widevine_license.json()
    license = data.get("license")
    if not license:
        print("Error", data)
    decrypt.update_license(license)
    Correct, keys = decrypt.start_process()
    if Correct:
        print("获取key成功")
        key_string = ' '.join([f"--key {key}" for key in keys])
        cmd = cmd + " " + key_string + " --decryption-binary-path ./mp4decrypt.exe"
    print(cmd)


def get_otp(id):
    url = f"https://azbackend.com/resources/user/videos/{id}/otp"
    response = requests.get(url, headers=headers)

    data = response.json()["data"]
    otp = data.get("otp")
    playbackInfo = data.get("playbackInfo")
    return otp, playbackInfo


def get_vids(cid =7784):
    url = f"https://azbackend.com/resources/user/readings/{cid}"
    response = requests.get(url, headers=headers)
    data = response.json()["data"]
    content = data["content"]
    for i in content:
        data = i["data"]
        type = i["type"]
        if type == "VIDEO":
            video_id = data["video_id"]
            otp, playbackInfo = get_otp(video_id)
            download(otp, playbackInfo)

if __name__ == '__main__':
    authorization = "Bearer"
    headers = {
        "vdo-sdk": "VdoWeb/2.4.29",
        "authorization": authorization,
        "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 Edg/124.0.0.0"
    }
    get_vids()

Hi, your script was working fine but now it has stopped working, can you please check PM and help me?