Definitely possible. In January, I tried using Gemini to perform black-box/white-box testing on an existing system in my company (it's quite old). It successfully exploited a hidden SQL injection vulnerability to penetrate the system and extract password hashes (not particularly strong passwords, successfully decrypted on a public website). In terms of pure skill level, I'd say this is at least the level of a mid-level cybersecurity professional, not even considering the significant efficiency improvement.