metasploit-gs/tools/pattern_offset.rb

#!/usr/bin/env ruby
# $Id$
# $Revision$

msfbase = __FILE__
while File.symlink?(msfbase)
	msfbase = File.expand_path(File.readlink(msfbase), File.dirname(msfbase))
end

$:.unshift(File.expand_path(File.join(File.dirname(msfbase), '..', 'lib')))
require 'fastlib'
require 'msfenv'

$:.unshift(ENV['MSF_LOCAL_LIB']) if ENV['MSF_LOCAL_LIB']

require 'rex'

if ARGV.length < 1
	$stderr.puts("Usage: #{File.basename($0)} <search item> <length of buffer>")
	$stderr.puts("Default length of buffer if none is inserted: 8192")
	$stderr.puts("This buffer is generated by pattern_create() in the Rex library automatically")
	exit
end

value = ARGV.shift
len   = ARGV.shift || 8192

value  = value.hex if (value.length >= 8 and value.hex > 0)
buffer = Rex::Text.pattern_create(len.to_i)

offset = Rex::Text.pattern_offset(buffer, value)
while offset
	puts offset
	offset = Rex::Text.pattern_offset(buffer, value, offset + 1)
end