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cisco vpnclient password decoder

Please do not abuse this service. Your vpn-admin should tell you the group-password!

Cisco Security Notice: Cisco IPsec VPN Implementation Group Password Usage Vulnerability

Encrypted (Group) Password: 
This script now uses cisco-decrypt.c to decode passwords. Thanks to for decoding and posting the algorithm!

This script used to do "ltrace -i ./vpnclient connect ... 2>&1 | fgrep 805ac57" to decode passwords. (client: vpnclient-linux-4.0.3.B-k9).

enc: 1F66AC7C47ED2AB5B8ECE211269F1D198778F2DC9F784D8F2C67F37A23843304E2E5E40B879C7BA50E7D673114458F4B
clear: UJF2005