metasploit-framework/lib/metasm/tests/dynldr.rb

#    This file is part of Metasm, the Ruby assembly manipulation suite
#    Copyright (C) 2006-2009 Yoann GUILLOT
#
#    Licence is LGPL, see LICENCE in the top-level directory

require 'test/unit'
require 'metasm'

class TestDynldr < Test::Unit::TestCase

  def test_dynldr
    str = "1234"
    d = Metasm::DynLdr
    d.new_api_c('int memcpy(char*, char*, int)')
    d.memcpy(str, "9999", 2)
    assert_equal('9934', str)

    c_src = <<EOS
int sprintf(char*, char*, ...);
void fufu(int i, char* ptr)
{
  sprintf(ptr, "lolzor %i\\n", i);
}
EOS
    buf = 'aaaaaaaaaaaaaaaaaa'
    d.new_func_c(c_src) { d.fufu(42, buf) }
    assert_equal("lolzor 42\n\000aaaaaaa", buf)

    if d.host_cpu.shortname == 'ia32'
      ret = d.new_func_asm('int __fastcall bla(int)', "lea eax, [ecx+1]\nret") { d.bla(42) }
      assert_equal(43, ret)
      assert_equal(false, d.respond_to?(:bla))
    end
  end
end