upload or download file via Dropbox

rule:
  meta:
    name: upload or download file via Dropbox
    namespace: communication/c2/file-transfer
    authors:
      - mehunhoff@google.com
    scopes:
      static: function
      dynamic: span of calls
  features:
    - and:
      - match: set HTTP header
      - string: "Dropbox-API-Arg"