Executing Password Change over Ruby Net-SSH

Ruby
1

Hi all,

I am looking to execute a password change over Net-ssh and this code
seems to hang:

Net::SSH.start(server_ip, “user”, :verbose => :debug ) do |session|

session.process.popen3(“ls”) do |input, output, error|

["old_pass","test", "test"].each do |x|

    input.puts x

end

end

end

I know the connection works because using a simple exec I can get the
output from ls on the remote server, but this hangs.

Any ideas?

The last message from debug is that the public key succeeded.

2

On Thu, May 20, 2010 at 9:28 AM, Tyler S. [email protected]
wrote:

I am looking to execute a password change over Net-ssh…

I know the connection works because using a simple exec I can get the
output from ls on the remote server, but this hangs.

Any ideas?

Here’s an old script I had used to randomize weak passwords. I
haven’t tried it for years, but I hope it helps:

#!/usr/bin/env ruby

require ‘rubygems’
require ‘net/ssh’

usernames = [“username”]
passwords = [“password”]
hostnames = [“hostname”]

For example:

usernames = [ ‘alice’, ‘bob’, ‘charlie’ ]

usernames = %qw{ alice bob charlie }

passwords = [ ‘password’, ‘baseball’, ‘apple’, ‘123456’ ]

hostnames = [ ‘alpha’, ‘beta’ ]

srand

hostnames.each do |hostname|
puts hostname
usernames.each do |username|
puts “\t#{username}”
passwords.each do |password|
puts “\t\t#{password}”
begin
Net::SSH.start( hostname, username, password ) do |session|
puts “\t\t\tBAD”
command = “passwd”
newword = “”
(rand(32) + 32).times do
newword << (rand(95) + 32).chr
end

      session.process.open( command ) do |shell|
        shell.on_success do |p|
          puts "process started"
        end

        shell.on_failure do |p|
          puts "process failed to start"
        end

        shell.on_stderr do |p,data|
          puts "E-> #{data}"
          case data
            when /\(current\) UNIX password:/
              p.puts password
              puts "********"
            when /New UNIX password:/
              p.puts newword
              puts "********"
            when /Retype new UNIX password:/
              p.puts newword
              puts "********"
            else
              puts "DEATH!"
              exit
          end
        end

        shell.on_stdout do |p,data|
          puts "O-> #{data}"
        end

        shell.on_exit do |p, status|
          puts "process finished with exit status: #{status}"
        end
      end
    end
  rescue
    puts "\t\t\tok"
  end
end

end
end

3

On Thu, May 20, 2010 at 9:56 AM, [email protected] wrote:

On Thu, May 20, 2010 at 9:28 AM, Tyler S. [email protected] wrote:

I am looking to execute a password change over Net-ssh…

I know the connection works because using a simple exec I can get the
output from ls on the remote server, but this hangs.

Any ideas?

Here’s an old script I had used to randomize weak passwords. I
haven’t tried it for years, but I hope it helps:

I had some time and took a look at it. Net-SSH 2 no longer has the
API I had used in that old script, here is a rough update that appears
to work with NetSSH 2:

require ‘rubygems’
require ‘net/ssh’

usernames = [ ‘alice’, ‘bob’, ‘charlie’ ]
passwords = [ ‘password’, ‘baseball’, ‘apple’, ‘123456’ ]
hostnames = [ ‘alpha’, ‘beta’ ]

srand

hostnames.each do |hostname|
puts hostname
usernames.each do |username|
puts “\t#{username}”
passwords.each do |password|
puts “\t\t#{password}”
begin
Net::SSH.start( hostname, username, :password => password ) do
|session|
puts “\t\t\tBAD”
command = “passwd”
newword = “”
(rand(32) + 32).times do
newword << (rand(95) + 32).chr
end

      session.exec( command ) do |channel,stream,data|
        case stream
        when :stderr
          puts "E-> #{data}"
          case data
          when /\(current\) UNIX password:/
            channel.send_data password + "\n"
            puts "********"
          when /New UNIX password:/
            channel.send_data newword + "\n"
            puts "********"
          when /Retype new UNIX password:/
            channel.send_data newword + "\n"
            puts "********"
          else
            puts "DEATH!"
            exit
          end
        when :stdout
          puts "O-> #{data}"
        end
      end
    end
  rescue
    puts "\t\t\tok (#{$!.message})"
  end
end

end
end

4

require ‘rubygems’
require ‘net/ssh’
def passWord(hostname, username, password)
begin
Net::SSH.start( hostname, username, :password => password ) do
|session|
puts “\t\t\tBAD”
command = “passwd”
newword = “”
(rand(32) + 32).times { newword << (rand(95) + 32).chr }
session.exec( command ) do |channel,stream,data|
case stream
when :stderr
puts “E-> #{data}”
case data
when /(current) UNIX password:/
channel.send_data password + “\n”
puts “"
when /New UNIX password:/
channel.send_data newword + “\n”
puts "”
when /Retype new UNIX password:/
channel.send_data newword + “\n”
puts “********”
else
puts “DEATH!”
exit end
when :stdout
puts “O-> #{data}” end end end
rescue
puts “\t\t\tok (#{$!.message})” end end

usernames = [ ‘’, ]; passwords = [ ‘’ ]; hostnames = [ ‘’]
srand

hostnames.each do |hostname|
puts “\t#{hostname}”
usernames.each do |username|
puts “\t#{username}”
passwords.each do |password|
puts “\t\t#{passWord(hostname,username, password)}” end end end