Smb2

A packet parsing and manipulation library for the SMB2 protocol.

See Microsoft's [MS-SMB2]

It supports authentication via NTLM using the ruby ntlm gem

Installation

This gem has not yet been released, but when it is, do this:

Add this line to your application's Gemfile:

gem 'smb2'

And then execute:

$ bundle

Or install it yourself as:

$ gem install smb2

Usage

Using the `Client` class

dispatcher = RubySMB::Dispatcher::Socket.connect("192.168.100.140", 445)
client = RubySMB::Smb2::Client.new(
  dispatcher: dispatcher,
  username:"administrator",
  password:"P@ssword1",
  domain:"asdfasdf"
)
client.negotiate
client.authenticate

tree = client.tree_connect("\\\\#{dispatcher.socket.remote_address.ip_address}\\Users")

Now you can open files on the connected share. Tree#create is intended to behave like Ruby's File.open:

# read/write by default
file = tree.create("Public\\file.txt")
file.read # => <full contents of file.txt>
file.write("\nAppend a new line to file.txt")

Or with a block, the file will be closed when the block returns:

data = tree.create("Public\\file.txt") { |file|
  file.read
}

Making packets manually

sock = TCPSocket.new("192.168.100.140", 445)
neg = Smb2::Packet::NegotiateRequest.new(
  # This is necessary until I can figure out how to set a default for
  # `rest` fields
  dialects: "\x02\x02".force_encoding("binary"),
)
nbss = [neg.length].pack("N")
sock.write(nbss + neg.to_s)
# Grab NBSS size
size = sock.read(4).unpack("N").first
data = sock.read(size)
neg_response = Smb2::Packet::NegotiateResponse.new(data)

License

Smb2 is released under a 3-clause BSD license. See LICENSE.txt for full text.

Contributing

Fork it ( https://github.com/rapid7/smb2/fork )
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Push to the branch (git push origin my-new-feature)
Create a new Pull Request

trosen-r7/ruby_smb