Roxedus/widevine-l3-decryptor-current
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fzfile 2020-10-31 20:31:11 +01:00 committed by GitHub
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README.md
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But Widevine's least secure security level, L3, as used in most browsers and PCs, is implemented 100% in software (i.e no hardware TEEs), thereby making it reversible and bypassable.
This Chrome extension demonstates how it's possible to bypass Widevine DRM by hijacking calls to the browser's [Encrypted Media Extensions (EME)](https://www.html5rocks.com/en/tutorials/eme/basics) and decrypting all Widevine content keys transferred - effectively turning it into a clearkey DRM.
This Chrome extension demonstrates how it's possible to bypass Widevine DRM by hijacking calls to the browser's [Encrypted Media Extensions (EME)](https://www.html5rocks.com/en/tutorials/eme/basics) and decrypting all Widevine content keys transferred - effectively turning it into a clearkey DRM.
## Usage
To see this concept in action, just load the extension in Developer Mode and browse to any website that plays Widevine-protected content, such as https://bitmovin.com/demos/drm _[Update: link got broken?]_.
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## Why
This PoC was done to further show that code obfuscation, anti-debugging tricks, whitebox cryptography algorithms and other methods of security-by-obscurity will eventually by defeated anyway, and are, in a way, pointless.
This is **NOT** intended for copyright infringement or encouraging piracy.
## Legal Disclaimer
This is for educational purposes only. Downloading copyrighted materials from streaming services may violate their Terms of Service. **Use at your own risk.**

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manifest.json
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{
"manifest_version": 2,
"name": "Widivine Decryptor",
"name": "Widevine Decryptor",
"short_name": "WidevineDecryptor",
"description": "Decrypts and logs media keys from websites that use Widivine DRM",
"description": "Decrypts and logs media keys from websites that use Widevine DRM",
"version": "1.0.0",
"permissions":
[
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"browser_action": {
},
"content_scripts":
[
{
"matches": ["https://*/*"],
"js": ["content_script.js"],
"css": [],
"run_at": "document_start"
"run_at": "document_start",
"all_frames": true
}
],
"web_accessible_resources": ["content_key_decryption.js", "eme_interception.js", "lib/*", "protobuf-generated/*"]