Add files via upload

Added a script to extract device_private_key and device_client_id_blob from a WDV File, also added support for https://cdrm-project.com api

cdm/wks.py

@@ -26,6 +26,7 @@ from Cryptodome.PublicKey import RSA
 from Cryptodome.Signature import pss
 from Cryptodome.Util import Padding
 import logging
+from bs4 import BeautifulSoup
 
 _sym_db = _symbol_database.Default()
 
@@ -856,3 +857,28 @@ def parse_manifest_ism(manifest_url):
     encoded_string = base64.b64encode(bytes.fromhex(array_of_bytes.hex())).decode("utf-8")
 
     return kid, stream_info_list, encoded_string
+
+def get_keys_license_cdrm_project(license_url, headers_license, pssh_value):
+    formatted_headers = '\n'.join([f'{key}: "{value}"' for key, value in headers_license.items()])
+
+    json_data = {
+        'license': license_url,
+        'headers': formatted_headers,
+        'pssh': pssh_value,
+        'buildInfo': '',
+        'proxy': '',
+        'cache': False,
+    }
+
+    response = requests.post('https://cdrm-project.com/wv', json=json_data)
+    return response
+
+def print_keys_cdrm_project(response):
+    if response.status_code == 200:
+        soup = BeautifulSoup(response.text, 'html.parser')
+        li_elements = soup.find('ol').find_all('li')
+        for li in li_elements:
+            key = li.get_text(strip=True)
+            print(f'KEY: {key}')
+    else:
+        print(f"Error: {response.status_code}")

cdrm.py

@@ -0,0 +1,35 @@
+import argparse
+import requests
+from cdm.wks import PsshExtractor, get_keys_license_cdrm_project, print_keys_cdrm_project
+
+token = ""
+
+def main():
+    parser = argparse.ArgumentParser(description="Decrypt Widevine content using MPD URL and License URL")
+    parser.add_argument("-mpd", required=True, help="URL of the MPD manifest")
+    parser.add_argument("-lic", required=True, help="URL of the license server")
+    args = parser.parse_args()
+
+    mpd_url = args.mpd
+    license_url = args.lic
+
+    headers_mpd = {
+        'origin': 'https://play.hbomax.com',
+        'referer': 'https://play.hbomax.com/',
+    }
+
+    response = requests.get(mpd_url, headers=headers_mpd)
+    pssh_extractor = PsshExtractor(response.text)
+    pssh_value = pssh_extractor.extract_pssh()
+
+    print("PSSH value:", pssh_value)
+
+    headers_license = {
+        'authorization': f'Bearer {token}',
+    }
+
+    response = get_keys_license_cdrm_project(license_url, headers_license, pssh_value)
+    print_keys_cdrm_project(response)
+
+if __name__ == "__main__":
+    main()

extractwvd.py

@@ -0,0 +1,92 @@
+import argparse
+import json
+from enum import Enum
+from pathlib import Path
+from construct import BitStruct, Bytes, Const
+from construct import Enum as CEnum
+from construct import Flag, If, Int8ub, Int16ub, Optional, Padded, Padding, Struct, this
+from Cryptodome.PublicKey import RSA
+from cdm.wks import ClientIdentification
+
+class DeviceTypes(Enum):
+    CHROME = 1
+    ANDROID = 2
+
+WidevineDeviceStruct = Struct(
+    'signature' / Const(b'WVD'),
+    'version' / Int8ub,
+    'type' / CEnum(
+        Int8ub,
+        **{t.name: t.value for t in DeviceTypes}
+    ),
+    'security_level' / Int8ub,
+    'flags' / Padded(1, Optional(BitStruct(
+        Padding(7),
+        'send_key_control_nonce' / Flag
+    ))),
+    'private_key_len' / Int16ub,
+    'private_key' / Bytes(this.private_key_len),
+    'client_id_len' / Int16ub,
+    'client_id' / Bytes(this.client_id_len),
+    'vmp_len' / Optional(Int16ub),
+    'vmp' / If(this.vmp_len, Optional(Bytes(this.vmp_len)))
+)
+
+WidevineDeviceStructVersion = 1
+
+def parse_args():
+    parser = argparse.ArgumentParser(description='Widevine Device Information Parser')
+    parser.add_argument('file', type=Path, help='Path to WVD file')
+    return parser.parse_args()
+
+def write_key_and_blob_files(out_dir, device):
+    private_key_file = out_dir / 'device_private_key'
+    print(f'\n[INFO] Writing private key to: {private_key_file}')
+    private_key = RSA.import_key(device.private_key)
+    private_key_file.write_text(private_key.export_key('PEM').decode())
+
+    client_id_blob_file = out_dir / 'device_client_id_blob'
+    print(f'[INFO] Writing client ID blob to: {client_id_blob_file}')
+    client_id_blob_file.write_bytes(device.client_id)
+
+    if device.vmp:
+        vmp_blob_file = out_dir / 'device_vmp_blob'
+        print(f'[INFO] Writing VMP blob to: {vmp_blob_file}')
+        vmp_blob_file.write_bytes(device.vmp)
+
+def write_json_file(out_dir, name, client_id, device):
+    wv_json_file = out_dir / 'wv.json'
+    description = f'{name} ({client_id.Token._DeviceCertificate.SystemId})'
+    print(f'[INFO] Writing JSON file to: {wv_json_file}')
+    wv_json_file.write_text(json.dumps({
+        'name': name,
+        'description': description,
+        'security_level': device.security_level,
+        'session_id_type': device.type.lower(),
+        'private_key_available': True,
+        'vmp': bool(device.vmp),
+        'send_key_control_nonce': device.type == DeviceTypes.ANDROID
+    }, indent=2))
+
+def main():
+    args = parse_args()
+
+    name = args.file.with_suffix('').name
+    out_dir = Path.cwd() / 'cdm' / 'devices' / 'android_generic'
+    out_dir.mkdir(parents=True, exist_ok=True)
+
+    with args.file.open('rb') as fd:
+        device = WidevineDeviceStruct.parse_stream(fd)
+
+    print(f'\n[INFO] Starting Widevine Device Information Parsing')
+    write_key_and_blob_files(out_dir, device)
+
+    client_id = ClientIdentification()
+    client_id.ParseFromString(device.client_id)
+
+    write_json_file(out_dir, name, client_id, device)
+
+    print('[INFO] Done')
+
+if __name__ == '__main__':
+    main()