Metasploit 3 on FreeBSD

I've wanted to try Metasploit 3 since it was released in late March. I noticed the metasploit/devel FreeBSD port, but it wanted me to install framework-3.0-beta-3-svn.tar.gz. I decided to install Metasploit 3 (gold) manually, using the FreeBSD port dependencies for guidance.

I installed the following via the ports tree:

  • devel/subversion

  • devel/ruby-gems

  • databases/rubygem-activerecord

  • lang/ruby18


Then I extracted the framework-3.0.tar.gz I downloaded to /usr/local/src.

When I tried to run msfweb, I got this error:

Cannot find gem for Rails ~> 1.2.2.0:
Install the missing gem with “gem install - v=1.2.2 rails”,
or change environment.rb to define RAILS_GEM_VERSION with
your desired version.

Hmm. First I decided I needed to install www/rubygem-rails, which I did. Next I looked in framework-3.0/data/msfweb/config and found environment.rb, with these lines which I added to specify 1.2.3 instead of 1.2.2:

# Specifies gem version of Rails to use when vendor/rails is not present
#RAILS_GEM_VERSION = '1.2.2' unless defined? RAILS_GEM_VERSION
RAILS_GEM_VERSION = '1.2.3' unless defined? RAILS_GEM_VERSION

Next I started msfweb and told it to bind to an IP I could reach.

neely-bsd:/usr/local/src/framework-3.0# ruby ./msfweb -a 192.168.2.9

[*] Starting msfweb v3.0 on http://192.168.2.9:55555/

=> Booting WEBrick...
=> Rails application started on http://192.168.2.9:55555
=> Ctrl-C to shutdown server; call with --help for options

When I connected to the specified IP and port with a Web browser, I was able to exploit a demo Windows target without issue. The new interface is slick. It looks like most of the evasion options are for layer 4 and higher.

Comments

Anonymous said…
if you download the dev source there are some nifty new skins for it too!
1:06 AM
Anonymous said…
Any particular reason for moving it's code base to Ruby instead of Perl?
10:33 AM
Anonymous said…
I had to add:
ln -s /usr/local/bin/ruby /usr/bin/ruby
4:59 AM
Anonymous said…
From Perl to Ruby? Check out the Developer's Guide...

"The Ruby programming language was selected over other choices, such as python, perl, and C++ for quite a few reasons. The first (and primary) reason that Ruby was selected was because it was a language that the Metasploit staff enjoyed writing in. After spending time analyzing other languages and factoring in past experiences, the Ruby programming language was found to offer both a simple and powerful approach to an interpreted language. The degree of introspection and the object-oriented aspects provided by Ruby were something that fit very nicely with some of the requirements of the framework."

Those darn requirements. What to think...someone actually wrote an application against a set of requirements...so taboo :-).
10:01 PM
Anonymous said…
These instructions also work on OS X using "port". Thanks!
8:14 AM
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