HTB Flight machine avatar

HTB: Flight

Machine #73 on the Lain Kusanagi list. Flight earns its Hard rating not through any single clever trick, but through sheer chain length - each hop unlocks exactly one new thing, and you have to string six or seven of them together to reach SYSTEM. It’s a patience test as much as a technical one. Machine Info Name Flight Platform HackTheBox OS Windows Difficulty Hard IP 10.129.7.136 Domain flight.htb TL;DR Nmap shows a full AD port set. Gobuster vhost finds school.flight.htb, a PHP app with a ?view= parameter vulnerable to LFI. UNC path inclusion leaks svc_apache’s NTLMv2 hash via Responder - john cracks it to S@Ss!K@*t13. Password spray finds S.Moon reuses the same password. S.Moon has WRITE on the Shared share - use ntlm_theft to drop a desktop.ini coercion file, Responder captures C.Bum’s hash, john cracks it to Tikkycoll_431012284. C.Bum has WRITE on the Web share - upload a PHP webshell, get a reverse shell as svc_apache. Generate a msfvenom payload, catch it in msfconsole, upload RunasCs via meterpreter, run as C.Bum to get a second session. Port-forward port 8000 (internal IIS dev site) through the C.Bum session, discover C:\inetpub\development is writable, upload an ASPX webshell, get a shell as IIS AppPool\DefaultAppPool. That account has SeImpersonatePrivilege - msfconsole getsystem uses Named Pipe Impersonation (EfsPotato variant) to land NT AUTHORITY\SYSTEM. ...

June 4, 2026 · 6 min · João Vítor Bonin
HTB Blackfield machine avatar

HTB: Blackfield

Machine #72 on the Lain Kusanagi list. Every step in this box is intentional - no guesswork, just clean AD attack chaining from zero creds to domain admin. One of the better Hard-rated machines for learning the full lifecycle. Machine Info Name Blackfield Platform HackTheBox OS Windows Difficulty Hard IP 10.129.229.17 Domain BLACKFIELD.local TL;DR RID brute via null session gets a user list. ASREPRoast support, crack the hash, collect BloodHound data as support. BloodHound shows support can ForceChangePassword on audit2020. Change the password, enumerate SMB - forensic share has an lsass.zip in memory_analysis. pypykatz extracts svc_backup’s NT hash. PTH as svc_backup into WinRM - SeBackupPrivilege is enabled. Try SAM dump first (admin hash is stale). Use wbadmin to back up and restore ntds.dit, dump it with secretsdump, get the real admin hash, PTH to root. ...

June 3, 2026 · 4 min · João Vítor Bonin