VNCcrack is a simple, fast offline-mode VNC
password cracker. It takes a set of
challenge-response pairs of the type passed during
a VNC authentication attempt, and attempts to
recover the passwords using a dictionary file.
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A single DES object is shared over the entire program run to reduce overhead. The source code has been cleaned up, and a number of other inefficiencies were removed.
This release supports scanning a pcap file for VNC challenge/response authentications to attempt to crack, rather than forcing them to be extracted to a text file in advance. The Botan library is now used instead of OpenSSL for the DES operations. This version can check well over a million passwords per second on a Core2 processor, and has been tested successfully against the most recent version of TightVNC.
The code in this version is substantially cleaner and should be much easier to extend in the future. It also offers a number of useful new features, better error handling and recovery, and is somewhat faster.
