FWCIM metadata1 Generator — Academic Research Server

ENDPOINTS
  GET /getMetaData   — Generate a fresh randomized metadata1 token
  GET /health        — Health check

EXAMPLE
  curl http://localhost:8080/getMetaData | jq .token
  curl http://localhost:8080/getMetaData | jq .params
  curl http://localhost:8080/getMetaData | jq .pipeline_stages

PIPELINE
  Collectors (29 fields)
    → JSON.stringify
    → CRC32-IEEE (hex)
    → "CRC32HEX#JSON" framing
    → XXTEA encrypt  [key: ECdITeCs / delta: 0x9E3779B9]
    → Base64
    → "ECdITeCs:" + Base64
    → metadata1 value

KEY (from 81qffKa+2jL.js module 69)
  Identifier: ECdITeCs
  Material:   [0x708F0361, 0x99971834, 0x8BE7EB3A, 0x34249785]

BURP SUITE
  1. Start Burp Proxy (127.0.0.1:8080)
  2. GET /getMetaData → copy .token
  3. URL-encode the token
  4. Intercept Amazon POST to /ax/claim
  5. Replace metadata1= value with your token
  6. Forward and observe response