ActiveDirectory

Sypnosis Scepter is a Hard Windows machine from HackTheBox featuring an exposed NFS share that contains user certificate files, which after being cracked, allow for initial access and a series of chained Active Directory Certificate Services (ADCS) abuses (ESC9 and ESC14) to pivot through multiple user accounts, ultimately gaining DCSync rights for full domain compromise. + − ⌂ [https://i.ibb.co/JjzkJ3NR/user-removebg-preview.png]Scan for Services [https://i.ibb.co/LzdxQFPv/computer-removebg-preview.png]Enumerate NFS Share [https://i.ibb.co/Kckn13Nh/database-removebg-preview.png]Crack Certificate Passwords [https://i.ibb.co/JR4shsmH/login-removebg-preview.png]Authenticate as User 'd.baker' [https://i.ibb.co/0ybfPw9J/password-removebg-preview.png]Abuse 'ForceChangePassword' to become 'a.carter' [https://i.ibb.co/HDPF8ZMm/website-removebg-preview-1.png]Abuse ADCS (ESC9) to become 'h.brown' [https://i.ibb.co/Gwv4v4g/shell-exploit-removebg-preview.png]Capture User Flag [https://i.ibb.co/HDPF8ZMm/website-removebg-preview-1.png]Abuse ADCS (ESC14) to become 'p.adams' [https://i.ibb.co/Kckn13Nh/database-removebg-preview.png]Abuse DCSync rights to dump all hashes [https://i.ibb.co/679DN5x7/rooted-removebg-preview.png]Use Administrator hash to get Root Shell Skills Required Active Directory (AD) Enumeration NFS Enumeration Password Cracking (John the Ripper) AD Certificate Services (ADCS) Abuse Familiarity with BloodHound, Certipy, Impacket, and BloodyAD 1. Reconnaissance (TA0043) The reconnaissance phase involves actively scanning the target to identify services and potential vulnerabilities. ...

Overview Fusion corp is a hard rated box on tryhackme. After some basic enumeration fails, we find a backup file on the web server that contains a list of usernames. One of these users, lparker, is vulnerable to AS-REP Roasting because they have Kerberos pre-authentication disabled. We get their hash, crack it, and get a shell on the box. From there, post-exploitation enumeration reveals another user, jmurphy, with their password stored in the user account’s comment field. This user is a member of the Backup Operators group. We abuse this privilege to create a shadow copy of the C: drive and exfiltrate the ntds.dit and SYSTEM hives. Finally, we use secretsdump.py to dump all the domain hashes, get the administrator’s hash, and use it to get the final flag. ...