The following document will help, there is a MSSQL to Hana section:
Quick Start Guide for SAP HANA® Database
You will need a RepAgent MSSQL and a Replication Server with a license for Express Connect for Hana (ECH), and the Hana odbc driver (detailed in above document). You do not need an ASE unless you require it for the RepServer RSSD (can use included ASA eRSSD in place of ASE).