The tweet mentions that HackerFrogs is live on TryHackMe Advent of Cyber, demonstrating activities including online brute force attacks and WAF bypass. However, it does not provide specific details about the type of vulnerability, the WAF vendor, or the exact payloads used for bypassing. Therefore, no technical details can be analyzed or explained from this tweet alone. For precise analysis, more detailed information about the WAF bypass method, payload, and target is needed.
Check out the original tweet here: https://twitter.com/theshyhat/status/1998888636331512179