Cain&Abel是windows平台下的密码恢复工具，可以破解屏保、PWL密码、共享密码、缓存口令、远程共享口令、SMB口令、支持VNC口令解码、Cisco Type-7口令解码、Base64口令解码、SQL Server 7.0/2000口令解码、Remote Desktop口令解码、Access Database口令解码、Cisco PIX Firewall口令解码、Cisco MD5解码、NTLM Session Security口令解码、IKE Aggressive Mode Pre-Shared Keys口令解码、Dialup口令解码、远程桌面口令解码等综合工具，还可以远程破解，可以挂字典以及暴力破解，其sniffer功能极其强大，几乎可以明文捕获一切帐号口令，包括FTP、HTTP、IMAP、POP3、SMB、TELNET、VNC、TDS、SMTP、MSKERB5-PREAUTH、MSN、RADIUS-KEYS、RADIUS-USERS、ICQ、IKE Aggressive Mode Pre-Shared Keys authentications等。目前版本是v4.9.36。

工具的更多信息及下载地址参见这里：http://www.oxid.it/cain.html

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"Cain & Abel is a password recovery tool for Microsoft Operating Systems. It allows easy recovery of various kind of passwords by sniffing the network, cracking encrypted passwords using Dictionary, Brute-Force and Cryptanalysis attacks, recording VoIP conversations, decoding scrambled passwords, recovering wireless network keys, revealing password boxes, uncovering cached passwords and analyzing routing protocols. The program does not exploit any software vulnerabilities or bugs that could not be fixed with little effort. It covers some security aspects/weakness present in protocol's standards, authentication methods and caching mechanisms; its main purpose is the simplified recovery of passwords and credentials from various sources, however it also ships some "non standard" utilities for Microsoft Windows users."

more and download from here:http://www.oxid.it/cain.html