Bridging the Gap Between IDOR Theory and Real-World Bug Bounty Hunting

A security researcher reports being stuck in "tutorial hell" after mastering the theoretical aspects of Insecure Direct Object Reference (IDOR) vulnerabilities but struggling to identify them in production environments. Despite successfully discovering a simple Open Redirect bug, the researcher finds it challenging to apply their IDOR knowledge during actual bug bounty hunting. They have invested significant time studying IDOR through various resources including labs, books, write-ups, and tutorials, but encounter difficulties when facing real-world applications due to their inherent complexity and the absence of obviously vulnerable parameters. The researcher is seeking practical guidance on how to effectively transition from theoretical understanding to practical application in real-world scenarios, specifically requesting methodologies for systematically mapping applications and identifying targets with high probability of containing IDOR vulnerabilities.