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  5. CSRF Lab Guide — Hands-On Practice
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CSRF Lab Guide — Hands-On Practice

CSRF labs on Cyfotok simulate banking transfers, password changes, and email updates without CSRF tokens. Build HTML proof-of-concept pages that execute actions as the logged-in victim.

Published 1 June 2025Updated 1 June 2026

Lab setup

Log in as victim in one browser session. Open attacker's HTML page (provided in lab) that auto-submits form to vulnerable endpoint.

PoC construction

Auto-submitting form with hidden fields matching server expectations. IMG tag for GET-based CSRF.

Fix validation

After exploit, identify missing synchronizer token. Understand SameSite=Strict cookie mitigation.

Frequently asked questions

CSRF on JSON APIs?
Advanced topic — content-type tricks and CORS. Cyfotok beginner labs focus on form-based CSRF.

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Ready to practice?

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