/
jtr.rb
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/
jtr.rb
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# -*- coding: binary -*-
require 'open3'
require 'fileutils'
require 'rex/proto/ntlm/crypt'
module Msf
###
#
# This module provides methods for working with John the Ripper
#
###
module Auxiliary::JohnTheRipper
include Msf::Auxiliary::Report
#
# Initializes an instance of an auxiliary module that calls out to John the Ripper (jtr)
#
def initialize(info = {})
super
register_options(
[
OptPath.new('JOHN_BASE', [false, 'The directory containing John the Ripper (src, run, doc)']),
OptPath.new('JOHN_PATH', [false, 'The absolute path to the John the Ripper executable']),
OptPath.new('Wordlist', [false, 'The path to an optional Wordlist']),
OptBool.new('Munge',[false, 'Munge the Wordlist (Slower)', false])
], Msf::Auxiliary::JohnTheRipper
)
@run_path = nil
@john_path = ::File.join(Msf::Config.data_directory, "john")
autodetect_platform
end
def autodetect_platform
cpuinfo_base = ::File.join(Msf::Config.data_directory, "cpuinfo")
return @run_path if @run_path
case ::RUBY_PLATFORM
when /mingw|cygwin|mswin/
data = `"#{cpuinfo_base}/cpuinfo.exe"` rescue nil
case data
when /sse2/
@run_path ||= "run.win32.sse2/john.exe"
when /mmx/
@run_path ||= "run.win32.mmx/john.exe"
else
@run_path ||= "run.win32.any/john.exe"
end
when /x86_64-linux/
::FileUtils.chmod(0755, "#{cpuinfo_base}/cpuinfo.ia64.bin") rescue nil
data = `#{cpuinfo_base}/cpuinfo.ia64.bin` rescue nil
case data
when /mmx/
@run_path ||= "run.linux.x64.mmx/john"
else
@run_path ||= "run.linux.x86.any/john"
end
when /i[\d]86-linux/
::FileUtils.chmod(0755, "#{cpuinfo_base}/cpuinfo.ia32.bin") rescue nil
data = `#{cpuinfo_base}/cpuinfo.ia32.bin` rescue nil
case data
when /sse2/
@run_path ||= "run.linux.x86.sse2/john"
when /mmx/
@run_path ||= "run.linux.x86.mmx/john"
else
@run_path ||= "run.linux.x86.any/john"
end
end
@run_path
end
def john_session_id
@session_id ||= ::Rex::Text.rand_text_alphanumeric(8)
end
def john_pot_file
::File.join( ::Msf::Config.config_directory, "john.pot" )
end
def john_cracked_passwords
ret = {}
return ret if not ::File.exist?(john_pot_file)
::File.open(john_pot_file, "rb") do |fd|
fd.each_line do |line|
hash,clear = line.sub(/\r?\n$/, '').split(",", 2)
ret[hash] = clear
end
end
ret
end
def john_show_passwords(hfile, format=nil)
res = {:cracked => 0, :uncracked => 0, :users => {} }
john_command = john_binary_path
if john_command.nil?
print_error("John the Ripper executable not found")
return res
end
pot = john_pot_file
conf = ::File.join(john_base_path, "confs", "john.conf")
cmd = [ john_command, "--show", "--conf=#{conf}", "--pot=#{pot}", hfile]
if format
cmd << "--format=" + format
end
if RUBY_VERSION =~ /^1\.8\./
cmd = cmd.join(" ")
end
::IO.popen(cmd, "rb") do |fd|
fd.each_line do |line|
print_status(line)
if line =~ /(\d+) password hash(es)* cracked, (\d+) left/m
res[:cracked] = $1.to_i
res[:uncracked] = $2.to_i
end
bits = line.split(':')
next if not bits[2]
if (format== 'lm' or format == 'nt')
res[ :users ][ bits[0] ] = bits[1]
else
bits.last.chomp!
res[ :users ][ bits[0] ] = bits.drop(1)
end
end
end
res
end
def john_unshadow(passwd_file,shadow_file)
retval=""
john_command = john_binary_path
if john_command.nil?
print_error("John the Ripper executable not found")
return nil
end
if File.exists?(passwd_file)
unless File.readable?(passwd_file)
print_error("We do not have permission to read #{passwd_file}")
return nil
end
else
print_error("File does not exist: #{passwd_file}")
return nil
end
if File.exists?(shadow_file)
unless File.readable?(shadow_file)
print_error("We do not have permission to read #{shadow_file}")
return nil
end
else
print_error("File does not exist: #{shadow_file}")
return nil
end
cmd = [ john_command.gsub(/john$/, "unshadow"), passwd_file , shadow_file ]
if RUBY_VERSION =~ /^1\.8\./
cmd = cmd.join(" ")
end
::IO.popen(cmd, "rb") do |fd|
fd.each_line do |line|
retval << line
end
end
return retval
end
def john_wordlist_path
::File.join(john_base_path, "wordlists", "password.lst")
end
def john_binary_path
path = nil
if datastore['JOHN_PATH'] and ::File.file?(datastore['JOHN_PATH'])
path = datastore['JOHN_PATH']
::FileUtils.chmod(0755, path) rescue nil
end
if not @run_path
if ::RUBY_PLATFORM =~ /mingw|cygwin|mswin/
::File.join(john_base_path, "john.exe")
else
path = ::File.join(john_base_path, "john")
::FileUtils.chmod(0755, path) rescue nil
end
else
path = ::File.join(john_base_path, @run_path)
::FileUtils.chmod(0755, path) rescue nil
end
if path and ::File.exists?(path)
return path
end
path = Rex::FileUtils.find_full_path("john") ||
Rex::FileUtils.find_full_path("john.exe")
end
def john_base_path
if datastore['JOHN_BASE'] and ::File.directory?(datastore['JOHN_BASE'])
return datastore['JOHN_BASE']
end
if datastore['JOHN_PATH'] and ::File.file?(datastore['JOHN_PATH'])
return ::File.dirname( datastore['JOHN_PATH'] )
end
@john_path
end
def john_expand_word(str)
res = [str]
str.split(/\W+/) {|w| res << w }
res.uniq
end
def john_lm_upper_to_ntlm(pwd, hash)
pwd = pwd.upcase
hash = hash.upcase
Rex::Text.permute_case(pwd).each do |str|
if hash == Rex::Proto::NTLM::Crypt.ntlm_hash(str).unpack("H*")[0].upcase
return str
end
end
nil
end
def john_crack(hfile, opts={})
res = {:cracked => 0, :uncracked => 0, :users => {} }
john_command = john_binary_path
if john_command.nil?
print_error("John the Ripper executable not found")
return nil
end
# Don't bother making a log file, we'd just have to rm it when we're
# done anyway.
cmd = [ john_command, "--session=" + john_session_id, "--nolog"]
if opts[:conf]
cmd << ( "--conf=" + opts[:conf] )
else
cmd << ( "--conf=" + ::File.join(john_base_path, "confs", "john.conf") )
end
if opts[:pot]
cmd << ( "--pot=" + opts[:pot] )
else
cmd << ( "--pot=" + john_pot_file )
end
if opts[:format]
cmd << ( "--format=" + opts[:format] )
end
if opts[:wordlist]
cmd << ( "--wordlist=" + opts[:wordlist] )
end
if opts[:incremental]
cmd << ( "--incremental=" + opts[:incremental] )
end
if opts[:single]
cmd << ( "--single=" + opts[:single] )
end
if opts[:rules]
cmd << ( "--rules=" + opts[:rules] )
end
cmd << hfile
if RUBY_VERSION =~ /^1\.8\./
cmd = cmd.join(" ")
end
::IO.popen(cmd, "rb") do |fd|
fd.each_line do |line|
print_status("Output: #{line.strip}")
end
end
res
end
def build_seed
seed = []
#Seed the wordlist with Database , Table, and Instance Names
count = 0
schemas = myworkspace.notes.where('ntype like ?', '%.schema%')
unless schemas.nil? or schemas.empty?
schemas.each do |anote|
seed << anote.data['DBName']
count += 1
anote.data['Tables'].each do |table|
seed << table['TableName']
count += 1
table['Columns'].each do |column|
seed << column['ColumnName']
count += 1
end
end
end
end
print_status "Seeding wordlist with DB schema info... #{count} words added"
count = 0
instances = myworkspace.notes.find(:all, :conditions => ['ntype=?', 'mssql.instancename'])
unless instances.nil? or instances.empty?
instances.each do |anote|
seed << anote.data['InstanceName']
count += 1
end
end
print_status "Seeding with MSSQL Instance Names....#{count} words added"
count = 0
# Seed the wordlist with usernames, passwords, and hostnames
myworkspace.hosts.find(:all).each do |o|
if o.name
seed << john_expand_word( o.name )
count += 1
end
end
print_status "Seeding with hostnames....#{count} words added"
count = 0
myworkspace.creds.each do |o|
if o.user
seed << john_expand_word( o.user )
count +=1
end
if (o.pass and o.ptype !~ /hash/)
seed << john_expand_word( o.pass )
count += 1
end
end
print_status "Seeding with found credentials....#{count} words added"
count = 0
# Grab any known passwords out of the john.pot file
john_cracked_passwords.values do |v|
seed << v
count += 1
end
print_status "Seeding with cracked passwords from John....#{count} words added"
count = 0
#Grab the default John Wordlist
john = File.open(john_wordlist_path, "rb")
john.each_line do |line|
seed << line.chomp
count += 1
end
print_status "Seeding with default John wordlist...#{count} words added"
count = 0
if datastore['Wordlist']
wordlist= File.open(datastore['Wordlist'], "rb")
wordlist.each_line do |line|
seed << line.chomp
count ==1
end
print_status "Seeding from user supplied wordlist...#{count} words added"
end
unless seed.empty?
seed.flatten!
seed.uniq!
if datastore['Munge']
mungedseed=[]
seed.each do |word|
munged = word.gsub(/[sS]/, "$").gsub(/[aA]/,"@").gsub(/[oO]/,"0")
mungedseed << munged
munged.gsub!(/[eE]/, "3")
munged.gsub!(/[tT]/, "7")
mungedseed << munged
end
print_status "Adding #{mungedseed.count} words from munging..."
seed << mungedseed
seed.flatten!
seed.uniq!
end
end
print_status "De-duping the wordlist...."
print_status("Wordlist Seeded with #{seed.length} words")
return seed
end
end
end