SSTI1 is a beginner-level web challenge in picoCTF that introduces Server-Side Template Injection (SSTI). By entering a simple expression like {{7*7}}, players can confirm the vulnerability and explore how template engines like Jinja2 can be exploited.

Lame is an easy-level Linux machine on Hack The Box that focuses on exploiting outdated services. It involves identifying and using known vulnerabilities in VSFTPD and Samba to gain initial access and escalate privileges. This box is ideal for beginners learning basic enumeration, vulnerability scanning, and exploitation techniques.

Broker is a easy-difficulty machine that focuses on misconfigured MQTT services and insecure file handling. The challenge involves enumerating open ports, exploiting the MQTT broker to gain access, and abusing script execution for privilege escalation. It teaches the importance of securing message brokers and monitoring automated tasks.