Purpose of this project
Hello everyone! Hope all is good. I've spent the past few months scouring pages just to try and get decryption keys for widevine content. There was no clear instructions on the internet and the instructions that are there need pieced togther for a proper result. What I've tried to do is condense these fragments down to a cohesive guide for people to follow. If you have any questions feel free to message me on here, my reddit or discord, contact information can be found on my profile.
I used all the mentioned tools on windows 10 x64
Python 3.10.5 Make sure to check "add to path" option when installing.
ADB Minimal Install Make sure to choose yes when it asks if you would like to add to path
An Android 7-12 device that is able to be rooted.
Android devices I used
DumperV1: Truewell T95 S1 Pre-rooted, around $30 USD, multiple user success of dumping keys (myself included), good for those who don't aren't technically adept to rooting.
DumperV2: onn. Android TV 4K UHD Streaming Device Cheap and accesable but, needs magisk, frida module, and liboemcrypto disabler installed. You can find insturctions and scripts for installing magisk and rooting here, follow up until step 7 and install the frida-server and liboemcrypto modules below from the magisk app.
AS MENTIONED IN DUMPER READMES, SOME DEVICES WILL CONTINUE TO USE L1 AFTER ROOT, IF UNSURE USE "DRM INFO", IF STILL ON L1 PLEASE INSTALL LIBOEMCRYPTO DISABLER MAGISK MODULE
Step 1: Preparing CDM
Connect to your android device via ADB, on the T95 this is enabled by default over wifi. Other devices may vary.
To enable ADB / USB Debugging follow these steps
- Open your device's Settings and tap About phone or About tablet.
- Tap Build number repeatedly until you see a notification that reads "You are now a developer."
- Go back to the main System menu, then tap Developer options.
- Tap the toggle switch in the top-right corner to enable developer options (if it's not already enabled).
- Tap OK to confirm.
- Tap the USB debugging toggle switch.
- Tap OK to confirm.
- The next time you plug your device into a computer, you'll receive a prompt asking if you want to authorize USB debugging for that computer. Tap OK to confirm.
You may now connect to your device
adb connect <device-ip-address>
or if using USB
On your device you should receive a notification to accept the adb connection, checkmark trust this device and then click allow.
IF YOU HAVE MAGISK-FRIDA MODULE INSTALLED YOU MAY SKIP TO THE NEXT STEP
THIS METHOD MAY BE USED IF YOU ARE RUNNING AT AN L3 LEVEL AND HAVE ROOT ACCESS, THIS IS JUST SPECIFIC FOR THE T95S1
Let's go ahead and push frida-server to the Android device, for the T95 S1 I used Frida-Server 15.1.17 for android. Unnzip the xz file and extract Frida-Server file.
Change directory to where you extracted the file and enter the command
adb push frida-server-15.1.17-android-arm /sdcard/
Once it has been pushed open up a shell with
Move the server to the tmp directory
mv /sdcard/frida-server-15.1.17-android-arm /data/local/tmp/
You may get an error about chown permission, this is negligible
Login as super user and create a new environment
Give execute privileges to frida-server
chmod +x /data/local/tmp/frida-server-15.1.17-android-arm
Start the server
When you start the server command prompt will hang, this is normal and means the program is running, do not close out and continue to step 2
Step 2: Extracting the CDM
If you would like to check if frida-server is running connect via adb to your device in new command prompt like in step one, then use
adb shell and then
su and then
ps | grep frida this should show you the process running, if it does not something went wrong NOTE: MAY NOT BE APPLICABLE IF MODULE WAS INSTALLED VIA FRIDA
Download and extract Dumper for android 7-9
Download and extract DumperV2 for android 10-12
Open a new command prompt as administrator and change directories to the newly extracted folder and run
pip3 install -r requirements.txt and once that's finished, start the program with
Now play some widevine encrpyed content on your Android device. I suggest using https://bitmovin.com/demos/drm playing over google chrome.
Side note: on the T95 S1 I had to do these specific steps to get it to reliably dump. Play the video on bitmovin, stop dumper, start dumper, wait for it to finish booting, then click on the green "load" button in the top right of bitmovin while the video was still playing, so far this method has worked the best for me
Side note: on the onn 4k box, I had to install fx file manager and sideload launcher, push a chrome apk, install with the file manager, and run from sideloader, started on a page that wasn't bitmovin (duckduckgo.com in my case) started the script, loaded bitmovin, clicked the "load" button in the top right corner, stopped the script, started the script again, went back to duckduckgo.com, stopped the script and started repeatedly until you see an RSA fingerprint, when you see that you can go back to butmovin and play the video and dump the keys
Once you have played the content your keys should be dumped in the dumper folder under
/key-dumps/your-device-keys/xxxx/xxxxxxxx/ and should be named
Make a copy of these for safekeeping wherever you like but DO NOT LOSE THEM
You can now close out of running frida server if you are running it over adb, you may also close dumper once you have verified successful dumping.
Make sure to have file extensions visible on windows, this can be turned on by searching "show file extensions" in the windows search bar.
Now we will rename these files,
device_client_id_blob. and rename
device_private_key. The periods on the end is intentional as windows likes to keep file extentions, please make sure to have this exact or it will cause errors with downey! Only rename with windows, using a program such as text editor and saving under all files will still corrupt the data!
Step 3: Obtaining decryption keys
Download and extract Downey
Open a new command prompt as administrator and change directories to the newly extracted folder
Build Downey with command
go build -o downey.exe -a main.go once this is finished you should see
downeye.exe in your Downey folder
device_client_id_blob file and
device_private_key file to the Downey folder.
Open Firefox or Chrome and navigate back to https://bitmovin.com/demos/drm and open web devoloper tools (ctrl+shift+c) and click on the network tab
Play the video on the site, then in the filter urls type in
method:POST and under the domain look for the licensing server, in this case it's
https://cwip-shaka-proxy.appspot.com/ right click on this value and copy value -> copy post data and paste this somewhere safe for now.
Next we need the MPD file, under the filter url section in the network tab now we are going to filter for
MPD one result should show up for
11331.mpd downoad this by double clicking or copying and saving. Rename this file to
manifest.mpdand place it in your Downey folder
Now we have everything we need, let's go ahead and run downey with
downey.exe --lic-server "https://cwip-shaka-proxy.appspot.com/no_auth" if everything goes successful you should get the decryption keys for the video, so for bitmovin i received
Decryption keys: ccbf5fb4c2965be7aa130ffb3ba9fd73:9cc0c92044cb1d69433f5f5839a159df 9bf0e9cf0d7b55aeb4b289a63bab8610:90f52fd8ca48717b21d0c2fed7a12ae1 eb676abbcb345e96bbcf616630f1a3da:100b6c20940f779a4589152b57d2dacb 0294b9599d755de2bbf0fdca3fa5eab7:3bda2f40344c7def614227b9c0f03e26 639da80cf23b55f3b8cab3f64cfa5df6:229f5f29b643e203004b30c4eaf348f4
And there you have it! decryption keys for all versions of the video and one for the audio.
Optional: How to download, decrypt, and merge Bitmovin video and audio
Download YT-DLP and place in a new folder or a folder of your choice.
Open a new command prompt as administrator and change directories to the folder you've placed
Go back to https://bitmovin.com/demos/drm and open up the web devoloper tools (ctrl+shift+c) and click on the network tab.
Play the video on the site, then in the filter urls type in
MPD like in step 3.
Copy the url value from the search result. You can do this by: Right click -> Copy Value -> Copy URL In this case it should be
Now in the command prompt you have opened execute the command
yt-dlp.exe --allow-unplayable https://cdn.bitmovin.com/content/assets/art-of-motion_drm/mpds/11331.mpd
This should download two files in your yt-dlp directory, an encrpyted
mp4 video file and an encrypted
m4a audio file. For ease I have renamed these
Download and extract MP4Decrypt
Open a new command prompt as administrator and change directories to the MP4Decrypt bin folder.
encrypted.m4a files in this bin folder as well
Decrpyt the video by using
mp4decrypt.exe --key xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx inputfile.mp4 outputfile.mp4 where the key in this case would be one we extracted earlier,
inputfile.mp4 being the
encrytped.mp4 file we downloaded earlier and
outputfile.mp4 can be named whatever you choose, I will be using
decrypted.mp4 so for this instance it would be
mp4decrypt.exe --key eb676abbcb345e96bbcf616630f1a3da:100b6c20940f779a4589152b57d2dacb encrypted.mp4 decrypted.mp4
Decrpyt the audio by using
mp4decrypt.exe --key xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx inputfile.m4a outputfile.m4a where the key in this case would be one we extracted earlier,
inputfile.m4a being the
encrytped.m4a file we downloaded earlier and
outputfile.m4a can be named whatever you choose, I will be using
decrypted.m4a so for this instance it would be
mp4decrypt.exe --key eb676abbcb345e96bbcf616630f1a3da:100b6c20940f779a4589152b57d2dacb encrypted.m4a decrypted.m4a
You should now have two playable files, the video
decrypted.mp4 and the audio
decrypted.m4a now it's time for the final step .
Download and extract ffMPEG
Open a new command prompt as administrator and change directories to the ffmpeg bin folder.
derypted.m4a files in this bin folder as well
In command prompt issue the command to merge the two streams
ffmpeg.exe -i decrypted.mp4 -i decrypted.m4a -vcodec copy -acodec copy bitmovin.mp4
Congrats, you now have a playable widevine audio/video file!
Site Specific instructions.
Hopefully more to come!
Don't feel like rooting and dumping? Purchase an L3 CDM.
Contact me on my telegram or discord (info found on my gitlab profile)
Selling for $35 USD