PPTP MS-CHAPv2 hashes can be cracked using tools like Hashcat or John the Ripper .
: The 16-byte random value from the server. vpn-jantit-pptp
The challenge provides a PCAP file containing traffic from a PPTP VPN connection. PPTP is an older VPN protocol known for security vulnerabilities, particularly in its authentication phase, which often uses MS-CHAPv2. Step-by-Step Analysis PPTP MS-CHAPv2 hashes can be cracked using tools
Look for the MS-CHAPv2 authentication sequence. In Wireshark, you can filter for ppp.protocol == 0xc223 . You are looking for three specific packets: Challenge : The server sends a random nonce to the client. PPTP is an older VPN protocol known for
: MS-CHAPv2 relies on the DES algorithm, which is susceptible to brute-force attacks.
Open the file in Wireshark. Filter the traffic using pptp or gre (Generic Routing Encapsulation). You will see the control channel setup (TCP port 1723) followed by GRE packets carrying the encapsulated PPP data.