Yes, you can join GIBS Business School in Bangalore without XAT. The college accepts scores from other exams like CAT, MAT, CMAT, GMAT, ATMA, or relevant state-level entrance tests.
Apart from the exam score, GIBS also evaluates candidates through a Group Discussion and Personal Interview. So even if you haven't appeared for XAT, you can still apply and secure admission with a valid score from any of the accepted exams.