PlayreadyProxy2
An extension-based proxy for PlayReady EME challenges and license messages. \
Modifies the challenge before it reaches the web player and retrieves the decryption keys from the response.
Features
- User-friendly / GUI-based
- Bypasses one-time tokens, hashes, and license wrapping
- JavaScript native PlayReady implementation
- Supports PlayReady Device files
- Manifest V3 compliant
PlayReady Devices
This addon requires a PlayReady Device file to work, which is not provided by this project.
Compatibility
- Compatible (tested) browsers: Edge/Firefox on Windows.
Installation
- Chrome
- Download the ZIP file from the releases section
- Navigate to
chrome://extensions/
- Enable
Developer mode
- Drag-and-drop the downloaded file into the window
- Firefox
- Persistent installation
- Download the XPI file from the releases section
- Navigate to
about:addons
- Click the settings icon and choose
Install Add-on From File...
- Select the downloaded file
- Temporary installation
- Download the ZIP file from the releases section
- Navigate to
about:debugging#/runtime/this-firefox
- Click
Load Temporary Add-on... and select the downloaded file
Setup
PlayReady Device
If you only have a bgroupcert.dat and zgpriv.dat, run this command to create a .prd file:
pyplayready create-device -k zgpriv.dat -c bgroupcert.dat
Now, open the extension, click Choose File and select your PlayReady Device file.
Usage
All the user has to do is to play a DRM protected video and the decryption keys should appear in the Keys group box (if the service is not unsupported, as stated above). \
Keys are saved:
+ Temporarily until the extension is either refreshed manually (if installed temporarily) or a removal of the keys is manually initiated.
+ Permanently in the extension's chrome.storage.local storage until manually wiped or exported via the command line.
[!NOTE]
The video will not play when the interception is active, as the PlayReady CDM library isn't able to decrypt the license keys.
- Click the
+ button to expand the section to reveal the WRMHEADER and keys.
Issues
- DRM playback won't work when the extension is disabled and EME Logger is active. This is caused by my fix for dealing with EME Logger interference (solutions are welcome).
Disclaimer
- This program is intended solely for educational purposes.
- Do not use this program to decrypt or access any content for which you do not have the legal rights or explicit permission.
- Unauthorized decryption or distribution of copyrighted materials is a violation of applicable laws and intellectual property rights.
- This tool must not be used for any illegal activities, including but not limited to piracy, circumventing digital rights management (DRM), or unauthorized access to protected content.
- The developers, contributors, and maintainers of this program are not responsible for any misuse or illegal activities performed using this software.
- By using this program, you agree to comply with all applicable laws and regulations governing digital rights and copyright protections.
Credits