HTB Sauna machine avatar

HTB: Sauna

Sauna is an Easy Windows box from HackTheBox built around a classic Active Directory attack chain. From open-source name enumeration to ASREPRoasting, autologon credential exposure, and a DCSync to finish it off - this one hits all the fundamentals. Machine Info Name Sauna Platform HackTheBox OS Windows Difficulty Easy IP 10.129.95.180 TL;DR Scraped employee names off the bank’s “About” page, ran them through username-anarchy to generate AD-style usernames, and ASREPRoasted fsmith whose account had Kerberos pre-auth disabled. Cracked the hash with rockyou.txt and logged in via WinRM. Found autologon credentials for svc_loanmanager stored in plaintext in the registry. BloodHound showed that account has DCSync rights over the domain - used secretsdump to pull the Administrator hash and psexec to get SYSTEM. ...

June 3, 2026 · 4 min · João Vítor Bonin
HackTheBox Forest machine cover

HTB: Forest

Forest is one of those boxes that feels like a guided tour through Active Directory attack fundamentals. No CVEs, no fancy exploits - just proper AD enumeration, a misconfigured service account, and a BloodHound-mapped path straight to domain admin. Machine Info Field Details Name Forest Platform HackTheBox OS Windows Difficulty Easy IP 10.129.5.64 TL;DR SMB user enumeration reveals a service account with no Kerberos pre-auth required. AS-REP roasting gives us a crackable hash. Shell as svc-alfresco via WinRM. BloodHound maps a path through Exchange groups giving WriteDacl on the domain. We abuse that to grant DCSync, dump the Administrator hash, and psexec our way to SYSTEM. ...

May 31, 2026 · 4 min · João Vítor Bonin
Bounty

HTB Write-up: Bounty

Windows file uploads always seem innocuous until they’re not. Bounty is an easy Windows box that teaches a classic IIS trick – the kind that shows up in real engagements more often than you’d think. Machine Info Field Value Name Bounty Platform HackTheBox OS Windows Difficulty Easy IP 10.129.35.196 TL;DR Port 80 exposes an IIS 7.5 server with a file upload endpoint. Standard extension filters block .aspx and .asp shells, but IIS processes web.config files as server-side code – uploading a malicious one gives RCE. From there, SeImpersonatePrivilege is enabled and the target is Windows Server 2008 R2, making Juicy Potato the natural escalation path to SYSTEM. ...

May 20, 2026 · 4 min · João Vítor Bonin

HTB: Access - OSCP Prep Write-up

Old school. Access is a machine that takes you through a chain of credential pivoting across legacy protocols and file formats you do not see every day - no exploits, no CVEs, just enumeration and following the breadcrumbs wherever they lead. Machine info Name Access Platform HackTheBox OS Windows Difficulty Easy TL;DR Anonymous FTP exposes backup.mdb (Microsoft Access database) and Access Control.zip (AES-encrypted) backup.mdb contains an auth_user table with credentials - including the password to decrypt the ZIP The ZIP holds a PST file; reading the extracted email reveals the security account password in plaintext Telnet login as security -> user shell cmdkey /list shows saved credentials for ACCESS\Administrator; runas /savecred gives Administrator access Enumeration Port 21 was open and I went straight for it - anonymous FTP is one of those findings you want to verify immediately. ...

May 19, 2026 · 4 min · João Vítor Bonin