metasploit-framework/tools/modules/generate_mettle_payloads.rb

#!/usr/bin/env ruby
#
# This script generates Mettle payload wrappers
#

require 'erb'

schemes = [
  'tcp',
  'http',
  'https'
]

arches = [
  ['aarch64','Linux', 'aarch64-linux-musl'],
  ['armbe',  'Linux', 'armv5b-linux-musleabi'],
  ['armle',  'Linux', 'armv5l-linux-musleabi'],
  ['mips64', 'Linux', 'mips64-linux-muslsf'],
  ['mipsbe', 'Linux', 'mips-linux-muslsf'],
  ['mipsle', 'Linux', 'mipsel-linux-muslsf'],
  ['ppc',    'Linux', 'powerpc-linux-muslsf'],
  ['ppc64le','Linux', 'powerpc64le-linux-musl'],
  ['x64',    'Linux', 'x86_64-linux-musl'],
  ['x86',    'Linux', 'i486-linux-musl'],
  ['zarch',  'Linux', 's390x-linux-musl'],
  ['x64',    'OSX',   'x86_64-apple-darwin'],
]

arch = ''
payload = ''
platform = ''
scheme = ''
cwd = File::dirname(__FILE__)

arches.each do |a, pl, pa|
  schemes.each do |s|
    arch = a
    platform = pl
    payload = pa
    scheme = s

    template = File::read(File::join(cwd, "meterpreter_reverse.erb"))
    renderer = ERB.new(template)
    filename = File::join('modules', 'payloads', 'singles', platform, arch, "meterpreter_reverse_#{scheme}.rb")
    File::write(filename, renderer.result())
  end
end

`bundle exec #{File::join(cwd, 'update_payload_cached_sizes.rb')}`