nmcv’s gists

nmcv / latency.txt

Created November 8, 2015 13:48 — forked from jboner/latency.txt

Latency Numbers Every Programmer Should Know

	Latency Comparison Numbers
	--------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns
	Send 1K bytes over 1 Gbps network 10,000 ns 0.01 ms
	Read 4K randomly from SSD* 150,000 ns 0.15 ms

nmcv / install_phpsh.sh

Created October 17, 2015 10:39 — forked from eric1234/install_phpsh.sh

Install phpsh on Ubuntu

	# https://gist.github.com/eric1234/7324795

	# Make sure git is installed
	apt-get install -y git

	# Remove functions that phpsh needs from config.
	sed -i 's/pcntl_signal,//g' /etc/php5/cli/php.ini
	sed -i 's/pcntl_fork,//g' /etc/php5/cli/php.ini
	sed -i 's/pcntl_wait,//g' /etc/php5/cli/php.ini

nmcv / gdb_ascii_examine.txt

Created April 27, 2015 16:57

Examine memory with ASCII view in GDB

nmcv / simple-https-server.py

Last active August 29, 2015 14:14 — forked from dergachev/simple-https-server.py

	# taken from http://www.piware.de/2011/01/creating-an-https-server-in-python/
	# generate server.xml with the following command:
	# openssl req -new -x509 -keyout server.pem -out server.pem -days 365 -nodes
	# run as follows:
	# python simple-https-server.py
	# then in your browser, visit:
	# https://localhost:4443

	import BaseHTTPServer, SimpleHTTPServer
	import ssl

nmcv / wps_openwrt.sh

Last active August 29, 2015 14:14 — forked from alghanmi/wps_openwrt.sh

	##
	## WPS on OpenWRT
	## This script enables Wi-Fi Protected Setup on OpenWRT.
	##
	## Resources
	## http://wiki.openwrt.org/doc/uci/wireless#wps.options
	##

	#Install the full wpad package
	opkg update

nmcv / new_gist_file_0

Created January 23, 2015 23:15

OS X networkd "effective_audit_token" XPC type confusion sandbox escape (with exploit). From https://code.google.com/p/google-security-research/issues/detail?id=130&q=label%3AVendor-Apple

	networkd is the system daemon which implements the com.apple.networkd XPC service. It's unsandboxed but runs as its own user. com.apple.networkd is reachable from many sandboxes including the Safari WebProcess and ntpd (plus all those which allow system-network.)

	networkd parses quite complicated XPC messages and there are many cases where xpc_dictionary_get_value and xpc_array_get_value are used without subsequent checking of the type of the returned value.

	An XPC message with the following keys and values will reach the function at offset 0x7421 in networkd:

	exploit dict = {
	“type” = 6,
	“connection_id” = 1,
	“state” = {

nmcv / feistel_test.py

Created November 23, 2014 19:29

Test if L3 is L3 XOR {1} in the other case. H/W 1.

	#!/usr/bin/env python3


	import itertools
	import string
	from pprint import pprint
	from binascii import unhexlify, hexlify

	def cmp(a, b):

nmcv / sqlite_shell.py

Created June 9, 2014 17:19

Minimal SQLite shell from Python docs

	# A minimal SQLite shell for experiments

	import sqlite3

	con = sqlite3.connect(":memory:")
	con.isolation_level = None
	cur = con.cursor()

	buffer = ""

nmcv / i3-exit.py

Created May 8, 2014 16:40

Exit script for i3 (replaces i3-exit) with GTK frontend. Forked off someone on GH, added CLI options

	#!/usr/bin/env python

	# based on cb-exit used in CrunchBang Linux <http://crunchbanglinux.org/>

	import pygtk
	pygtk.require('2.0')
	import gtk
	import os
	import getpass
	import sys

nmcv / sha-padding.py

Created April 12, 2014 08:35 — forked from philfreo/sha-padding.py

	#!/usr/bin/env python
	# http://www.vnsecurity.net/t/length-extension-attack/
	# sha1 padding/length extension attack
	# by [email protected]
	#

	import sys
	import base64
	from shaext import shaext

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