inframedium

Expressway

hackthebox

Task: HackTheBox medium machine with IPsec VPN (strongSwan) on UDP/500 and SSH. Solution: Extract PSK hash via IKE Aggressive Mode, crack it, reuse password for SSH access, then exploit CVE-2025-32463 (sudo 1.9.17 chroot LPE via nsswitch.conf poisoning) for root.

$ ls tags/ techniques/

linux suid debian sudo hackthebox full_pwn ipsec ike vpn psk aggressive_mode credential_reuse nsswitch cve-2025-32463 strongswan

ike_aggressive_mode_psk_extractionpsk_dictionary_crackingcredential_reuse_vpn_to_sshsudo_chroot_lpe_nsswitch_poisoning

Analysis

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$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

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