Thursday, February 25, 2010

Very nice tool for pentests

I don't hide it from anybody; when doing pentests, my favorite approach was to simply browse information in open shares until I could find some user credentials there (yes, in big organizations, they are always there: scripts, source code, ini files...). With those in hands, try to see what else I was able to have access to; repeat the process until the whole network is owned. No big hack or exploit here, just basic "low hanging fruit detection".I just noticed a tool that makes that process thousands of times easier: keimpx.The description, from Darknet:keimpx is an open source tool, released under a modified version of Apache License 1.1. It can be used to quickly check for the usefulness of credentials across a network over SMB. Credentials can be:

  • Combination of user / plain-text password.

  • Combination of user / NTLM hash.

  • Combination of user / NTLM logon session token.
If any valid credentials has been discovered across the network after its attack phase, the user is asked to choose which host to connect to and which valid credentials to use, then he will be prompted with an interactive SMB shell where the user can:

  • Spawn an interactive command prompt.

  • Navigate through the remote SMB shares: list, upload, download files, create, remove files, etc.

  • Deploy and undeploy his own service, for instance, a backdoor listening on a TCP port for incoming connections.

  • List users details, domains and password policy.

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