feature: Add SAP HANA Support

[zakaria-zoulati]

Add SAP HANA database support

Adds SAP HANA as a supported target DBMS, including detection, fingerprinting, and full data enumeration.

Changes

• Register SAP HANA across core DBMS registries (enums, settings, dicts, handler, agent, common, dump)
• Add HANA SQL dialect to queries.xml: || concatenation, LIMIT/OFFSET, DUMMY table, SYS.* system views for enumeration (tables, columns, schemas, users, privileges, roles)
• New plugins/dbms/hana/ package: fingerprinting (via MAP() and CURRENT_SCHEMA), enumeration, connector (hdbcli), syntax handling (Oracle-style uppercase identifiers)
• Fix getColumns() UnboundLocalError for uppercase-identifier DBMSes (Oracle-style branch was missing HANA)

Testing

Validated end-to-end against a real SAP HANA Express 2.00.088 instance (Docker) using a small vulnerable Flask test app:

• DBMS fingerprint/confirmation
• Boolean-based blind injection (detection, enumeration, dump)
• UNION-based injection (detection, enumeration, dump)
• --banner, --current-user, --current-db, --is-dba, --dbs, --tables, --columns, --dump

Known limitations

• No time-based blind payload (HANA has no SLEEP())
• --is-dba may under-report for users granted admin via roles rather than direct privileges

Proof of concept