widevine

package
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 Go to latest Published: Jul 15, 2026 License: OSL-3.0 Imports: 14 Imported by: 1

README

widevine

Theatricality and deception, powerful agents to the uninitiated. But we are initiated, aren’t we, Bruce?

The Dark Knight Rises (2012)

Widevine implementation. first Widevine commit was May 21 2022:

https://github.com/gucio321/mech/commit/9d3dff51fbfe8e9ceec5db8d328b7da7434953dc

wvdumper/dumper

install Android Studio [1]. then create Android virtual device:

abi
x86
api level
24
target
Android 7.0 (Google APIs)

then download Widevine Dumper [2]. Then install:

pip install -r requirements.txt

then download Frida server [3], example file:

frida-server-15.1.17-android-x86.xz

then start Frida server:

adb root
adb push frida-server-15.1.17-android-x86 /data/frida-server
adb shell chmod +x /data/frida-server
adb shell /data/frida-server

then start Android Chrome and visit Shaka Player [4]. click the green play button. if you receive this prompt:

bitmovin.com wants to play protected content. Your device’s identity will be verified by Google.

click ALLOW. then start dumper:

$env:PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION = 'python'
python dump_keys.py

once you see "Hooks completed", go back to Chrome and click the green play button again. result:

2022-05-21 02:10:52 PM - Helpers.Scanner - 49 - INFO - Key pairs saved at
key_dumps\Android Emulator 5554/private_keys/4464/2770936375
  1. https://developer.android.com/studio
  2. https://github.com/wvdumper/dumper
  3. https://github.com/frida/frida/releases
  4. https://integration.widevine.com/player

where did proto file come from?

media_cas_proxy_sdk\ubuntu\protos\public

other tools

Documentation

Overview

crypto.go

errors.go

pssh.go

request.go

response.go

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func DecodePrivateKey 

func DecodePrivateKey(pemData []byte) (*rsa.PrivateKey, error)

func EncodeSignedMessage 

func EncodeSignedMessage(requestData []byte, privateKey *rsa.PrivateKey) ([]byte, error)

EncodeSignedMessage envelopes the request with an RSA signature.

func GetKey 

func GetKey(keys []*KeyContainer, id []byte) ([]byte, error)

GetKey searches for a key by its ID in a slice of KeyContainers. If the key is found, it returns the key and a nil error. If the key is not found, it returns nil and an error.

Types

type KeyContainer 

type KeyContainer struct {
	Id  []byte
	Iv  []byte
	Key []byte
}

func DecodeLicenseResponse 

func DecodeLicenseResponse(responseData []byte, requestData []byte, privateKey *rsa.PrivateKey) ([]*KeyContainer, error)

type PsshData 

type PsshData struct {
	KeyIds    [][]byte
	ContentId []byte
}

PsshData represents the Widevine-specific protobuf message.

func DecodePsshData 

func DecodePsshData(data []byte) (*PsshData, error)

DecodePsshData parses the protobuf wire format into a PsshData struct.

func (*PsshData) Encode 

func (p *PsshData) Encode() ([]byte, error)

Encode serializes the PsshData struct into the protobuf wire format.

func (*PsshData) EncodeLicenseRequest 

func (p *PsshData) EncodeLicenseRequest(clientId []byte) ([]byte, error)

EncodeLicenseRequest creates and serializes a LicenseRequest protobuf message.

Source Files

View all Source files

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