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@emonti
emonti / keybase.md
Created Jun 13, 2014
Keybase Proof
View keybase.md

Keybase proof

I hereby claim:

  • I am emonti on github.
  • I am emonti (https://keybase.io/emonti) on keybase.
  • I have a public key whose fingerprint is 9281 C1DF F521 9F9C 2C8F 1608 CB1A 656F B6F8 E778

To claim this, I am signing this object:

@emonti
emonti / its_a_bash_thing.txt
Last active Aug 29, 2015
It's a bash thing
View its_a_bash_thing.txt
~ export x="() { :;}; echo vulnerable"
~ bash -c "echo hi"
vulnerable
hi
~ sh -c "echo hi"
vulnerable
hi
~ /bin/sh --version
GNU bash, version 3.2.51(1)-release (x86_64-apple-darwin13)
Copyright (C) 2007 Free Software Foundation, Inc.
View ffi_override_new_bug
#!/usr/bin/env jruby
# This code works fine in MRI, but not JRuby. For some strange reason
# jruby cannot superclass FFI::MemoryPointer or FFI::Buffer and override
# the initialize() method.
require 'ffi'
class SpecialBuffer < FFI::Buffer
def initialize()
super(256)
View gist:279607
# copy and paste this into IRB...
#
require 'ffi'
class Foo < FFI::Struct
layout :ary, [:uint16, 10]
end
f = Foo.new
@emonti
emonti / msf-rex.gemspec
Created Dec 1, 2010
gemspec to get a ruby gem out of lib/rex in the metasploit framework
View msf-rex.gemspec
# Drop this into msf3 root-dir as 'msf-rex.gemspec'.
#
# Create gem with:
# $ gem build msf-rex.gemspec
#
# Note there's already a "rex" rubygem, which is why we used 'msf-rex'.
# We can still "require 'rex'" though.
$: << 'lib'
@emonti
emonti / dyldcache.c
Created Mar 8, 2012
dyldcache.c dyld_shared_cache dumper
View dyldcache.c
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
@emonti
emonti / dyld_shared_cache.bt
Created Mar 8, 2012
dyld_shared_cache.bt 010 Editor Binary template
View dyld_shared_cache.bt
//--------------------------------------
//--- 010 Editor v3.2.2 Binary Template
//
// File: dyld_shared_cache.bt
// Author: Eric Monti
// Revision: 0.0.1
// Purpose: Parses Mac/iOS dyld_shared_cache format
//--------------------------------------
@emonti
emonti / 2dgrid.c
Created Sep 28, 2012
2d grid example for malic
View 2dgrid.c
#include <stdio.h>
#define ROWS 10
#define COLUMNS 7
// This is a 2-dimensional array.
// It makes accessing the values of a
// bitmap easy by using x/y references.
int grid[ROWS][COLUMNS] = {
{0,0,0,0,0,0,0}, // 7 columns across
@emonti
emonti / 1dgrid.c
Created Sep 28, 2012
1d grid example for malic
View 1dgrid.c
#include <stdio.h>
int main()
{
// Notice, there are no brackets around the rows this time.
// This is a 1-dimensional array. Even though it looks 2d in
// the code, it's one long list to the computer.
//
// Using a 1-dimensional array, we can still treat the data
// inside of it as a grid in our code, though.
@emonti
emonti / llvm_disassembler.rb
Last active Oct 13, 2015
Multi-arch bytecode disassembler using libLLVM
View llvm_disassembler.rb
#!/usr/bin/env ruby
# author eric monti ~ nov 20, 2012
# license: DWTFYW
require 'rubygems'
require 'ffi'
class LLVMDisassembler
module C
extend FFI::Library
ffi_lib ['LLVM', 'LLVM-3.2svn', 'LLVM-3.1', 'LLVM-3.0']
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