No other method works because the binary ignores standard sudo exploits. Phase 4: Lateral Movement – The Second Machine With root on Machine 1, you find a .ssh/id_rsa key belonging to john . Machine 2 (IP 172.17.0.2 ) is internal. Use chisel to pivot:
gobuster dir -u http://10.10.10.10 -w /usr/share/wordlists/dirb/common.txt -x php,txt,zip Look for /dev/ , /notes/ , or a .git/ directory. The last trial hides an SSH key in a .git cache. Step 3: The "Hidden API" Endpoint One element unique to this room is a hidden GraphQL endpoint at /api/graphql . This is not documented. Use ffuf to fuzz for API endpoints:
✅ Root on Machine 1 via race condition ✅ SYSTEM on Machine 2 via HiveNightmare ✅ Found and decrypted the registry flag ✅ Submitted the correct final hash to TryHackMe ✅ Deleted bash history and cleared logs (audit passes) the last trial tryhackme verified
So fire up your Kali VM, set your netcat listener, and take on The Last Trial. When you finally see that final hash accepted, you’ll have earned every bit of the verified title. This article is for educational purposes only. Always follow TryHackMe’s rules and do not share flags publicly. The techniques described apply to this specific room and should not be used on unauthorized systems.
Dump SAM:
Compile on target: gcc race.c -o race and run in background. Simultaneously, repeatedly execute /usr/bin/verify_access . Within seconds, you get a root shell.
./chisel server -p 8000 --reverse On Machine 1 (root): No other method works because the binary ignores
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\LastTrial Retrieve it with: