BDA decoder

Decrypt older FunCaptcha payloads where keys derive from the user agent plus a time bucket, or from the session token for misc blobs. Paste base64 for the BDA field; use raw JSON for the misc tool.

BDA encryption

x-ark-esync-value

User agent

Encrypted payload (base64 of JSON)

Decrypted payload

Other encryption

Session token

Encrypted payload (JSON)

Decrypted payload