Employer withholding my salary for over a month. Can I take legal action?

I've been working at a tech company in Bengaluru for over a year, but my employer hasn't paid my salary for the last two months. Whenever I ask, they just make vague promises and keep delaying. I'm struggling to pay rent and manage my expenses. Is this legal? What steps can I take to recover my dues? I need guidance urgently as I'm feeling stuck and helpless.