Hi guys im new here and dont know here to look

Hi, I'm looking for a place where people sell valid accounts for specific websites (like xxxxx.com). I also found a tool called Antipublic — can it check if accounts are valid? Lastly, I'm curious about how SQL database vulnerabilities work. Anyone can hack spesific website for me ? im ready to pay for my jobs

also im looking for :

Primary Approach (API-based):
- Reverse engineer the mobile app's API endpoints
- Implement automatic login with session cookies
- Extract API calls from the mobile application
- Maintain persistent sessions with proper cookie management
- Automatically handle authentication flows including SMS verification