hello_world.rb

#!/usr/bin/env ruby

# Library by Nguyen Anh Quynh
# Original binding by Nguyen Anh Quynh and Tan Sheng Di
# Additional binding work by Ben Nagy
# (c) 2013 COSEINC. All Rights Reserved.

require 'crabstone'
include Crabstone

arm = (
  "\xED\xFF\xFF\xEB\x04\xe0\x2d\xe5\x00\x00\x00\x00\xe0\x83\x22" <<
  "\xe5\xf1\x02\x03\x0e\x00\x00\xa0\xe3\x02\x30\xc1\xe7\x00\x00\x53\xe3"
)

begin
  
  cs = Disassembler.new(ARCH_ARM, MODE_ARM)
  puts "Hello from Capstone v #{cs.version.join('.')}!"
  puts "Disasm:"

  begin
    cs.decomposer = true

    # disasm is an array of Crabstone::Instruction objects
    disasm = cs.disasm(arm, 0x1000)

    disasm.each {|i|
      printf("0x%x:\t%s\t\t%s\n",i.address, i.mnemonic, i.op_str)
    }

    disasm = cs.disasm(arm, 0x1000)
    puts disasm.map {|i| "0x%x:\t%s\t\t%s\n" % [i.address, i.mnemonic, i.op_str]}

  rescue
    fail "Disassembly error: #{$!} #{$@}"
  ensure
    cs.close
  end

rescue
  fail "Unable to open engine: #{$!}"
end