Windows

Overview Timelapse is an Easy Active Directory box built around a single domain controller (DC01, domain timelapse.htb). The entry point is an anonymously readable SMB share that stores a backup zip containing a PFX certificate bundle. The zip and the PFX inside it are both password protected, but both fall quickly to john against rockyou.txt. Once the certificate and private key are extracted, they authenticate to WinRM over TLS as legacyy, which owns the user flag. ...

Overview Windows Server 2019 (Build 10.0.17763). Attacker IP (tun0): 10.10.14.x. Key techniques: LFI/RFI, PHP session poisoning, blacklist bypass, PSCredential lateral movement, malicious CHM, Net-NTLMv2 capture and crack. 1 2 3 4 5 6 7 8 9 10 11 12 nmap -> IIS + PHP +- LFI in ?lang= (blog) +- read the PHP session file (C:\Windows\TEMP\sess_<PHPSESSID>) +- PHP session poisoning: PHP code in the "username" field +- RCE as NT AUTHORITY\IUSR +- download nc64.exe -> reverse shell (IUSR) +- db.php -> MySQL password 36mEAhz/B8xQ~2VM +- password reuse -> PSCredential -> shell as SNIPER\chris (user flag) +- malicious .chm in C:\Docs (opened by the admin) +- Responder captures the admin Net-NTLMv2 +- hashcat -m 5600 -> butterfly!#1 +- PSCredential -> shell as Administrator (root flag) Reconnaissance 1 2 3 4 5 # 1) fast sweep of all ports ports=$(nmap -p- --min-rate=1000 -T4 10.10.10.x | grep ^[0-9] | cut -d '/' -f 1 | tr '\n' ',' | sed s/,$//) # 2) service/script scan on open ports only nmap -p$ports -sC -sV 10.10.10.x Result: Windows, IIS, a PHP server. The “Sniper Co.” site has a login page and a blog. ...