Matt "Mookie" Thayer mrmookie

Secured HLS setup with Nginx as media server

This example is part of this article.

This is an example for an HLS delivery with basic security. Nginx compiled with nginx-rtmp-module & secure-link is used as media server. Features:

Domain filtering
Referrer filtering
Embed buster

FFmpeg cheat sheet

A list of useful commands for the FFmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

Direct copy of pre-encoded file:

$ ffmpeg -i filename.mp4 -codec: copy -start_number 0 -hls_time 10 -hls_list_size 0 -f hls filename.m3u8

Twitter DM + OTR: A quick and dirty tutorial

With the recent removal of the 140-character limit in Direct Messages by Twitter, DM's have now become a much more useful platform for communicating between individuals and groups. Sadly, DM's are still sent in plaintext between users and Twitter has no plans currently on encrypting these messages, at least as of August 2015. Since these are stored in plaintext at rest, an adversary can see the content of the message you are sending, which the two parties might not wish to happen. Fortunately as a few applications with basic Twitter support which also have excellent support for OTR, all hope isn't lo

	#!/bin/bash
	#Script to Scan All Sites Found With A Simple NMAP Scan With Burp.

	sites=$(nmap "$1" --open 443 --resolve-all --open -oG - \| awk 'NR!=1 && /open/{print $2}')

	for site in $sites
	do
	curl -vgw "\\n" 'http://127.0.0.1:1337/v0.1/scan' -d '{"urls":["'"$site"'"]}' > /dev/null 2>&1
	printf "Scanning %s with burp.\\n" "$site"
	done

	# data from http://ec.europa.eu/eurostat/web/gisco/geodata/reference-data/population-distribution-demography/geostat
	# Originally seen at http://spatial.ly/2014/08/population-lines/

	# So, this blew up on both Reddit and Twitter. Two bugs fixed (southern Spain was a mess,
	# and some countries where missing -- measure twice, submit once, damnit), and two silly superflous lines removed after
	# @hadleywickham pointed that out. Also, switched from geom_segment to geom_line.

	# The result of the code below can be seen at http://imgur.com/ob8c8ph

	library(tidyverse)

	Boot and interrupt the GRUB menu
	Edit the boot configuration, changing the "linux" line by adding these two parameters to the end of the line:
	noexec=off noexec32=off
	Then boot by pressing Ctrl+x.

	After booting, you can check to see if DEP/NX is turned off by running:
	dmesg \| grep NX

	When DEP/NX is turned off you should see something similar to this output:

	#!/bin/sh

	for file in "$@"; do
	outfile="${file%%.pdf}.jpg"
	echo "Thumbnailing $file to $outfile"
	convert -resize 300 "$file[0]" "$outfile"
	done