alex-bender

#!/usr/bin/python

import urllib2
import os
import json

URL = 'http://hastebin.com/documents'

def run(*args):
    if args:

alex-bender

#!/bin/bash

server='hastebin.com';

usage="$0 pastes into $server
  usage: $0 something
  example: '$0 pie' or 'ps aufx |$0'"

if [ -z $1 ]; then 
  str=`cat /dev/stdin`;

alex-bender

# aptitude install qemu-kvm libvirt-bin
# create a bridge with your current interface

auto eth1
iface eth1 inet manual
 
auto br0
iface br0 inet dhcp
	bridge_ports eth1

alex-bender

Why do compilers even bother with exploiting undefinedness signed overflow? And what are those
mysterious cases where it helps?

A lot of people (myself included) are against transforms that aggressively exploit undefined behavior, but
I think it's useful to know what compiler writers are accomplishing by this.

TL;DR: C doesn't work very well if int!=register width, but (for backwards compat) int is 32-bit on all
major 64-bit targets, and this causes quite hairy problems for code generation and optimization in some
fairly common cases. The signed overflow UB exploitation is an attempt to work around this.

alex-bender

CFLAGS=-Wall -g

clean: ## Clean directory
	rm -f *.o

help: ## Help target
	@ag '^[a-zA-Z_-]+:.*?## .*$$' --nofilename $(MAKEFILE_LIST) \
	| sort \
	| awk 'BEGIN{FS=": ## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

alex-bender

import pyaudio
import librosa
import numpy as np
import requests

# ring buffer will keep the last 2 seconds worth of audio
ringBuffer = RingBuffer(2 * 22050)

def callback(in_data, frame_count, time_info, flag):
    audio_data = np.fromstring(in_data, dtype=np.float32)

alex-bender

# Mostly taken from: http://nbviewer.ipython.org/github/bmcfee/librosa/blob/master/examples/LibROSA%20demo.ipynb

import librosa
import matplotlib.pyplot as plt

# Load sound file
y, sr = librosa.load("filename.mp3")

# Let's make and display a mel-scaled power (energy-squared) spectrogram
S = librosa.feature.melspectrogram(y, sr=sr, n_mels=128)

alex-bender

#!/usr/bin/python
#
# prevent_syscall_test.py - python-ptrace sample program
#
# python-ptrace
#   https://bitbucket.org/haypo/python-ptrace/wiki/Home
#
# Debian / Ubuntu
#   $ sudo apt-get install python-ptrace
#

alex-bender

def hexdump(src, length=16, sep='.'):
	"""
	@brief Return {src} in hex dump.
	@param[in] length	{Int} Nb Bytes by row.
	@param[in] sep		{Char} For the text part, {sep} will be used for
                                non ASCII char.
	@return {Str} The hexdump
	"""
	result = []

alex-bender

import time
import random
import select
import socket


def chk(data):
    x = sum(a + b * 256 for a, b in zip(data[::2], data[1::2] + b'\x00')) & 0xFFFFFFFF
    x = (x >> 16) + (x & 0xFFFF)
    x = (x >> 16) + (x & 0xFFFF)