You will need to do from a client having such capability. The MySQL server (and any flavor of it) cannot connect to Sybase. With the possible exception that the MariaDB CONNECT storage engine can connect to your Sybase data after what you may find a way to copy data to MariaDB internal databases and tables. I don't know if CONNECT was ever tried with Sybase.
There are several MySQL/MariaDB clients capable of importing data from other RDBMS (typically using ODBC to connect to the external data source) to MySQL/MariaDB. One such client is SQLyog (I mention this one because I work for the company "Webyog", who is"responsible" for SQLyog. The only requirement is a functional ODBC driver for your Sybase data source - I think this
http://www.sybase.com/products/databasemanagement/advantagedatabaseserver/odbc-driver will do. But I don't know much about Sybase. There may be different drivers for different Sybase versions).
-- Peter Laursen
-- Webyog