aero aero

NOTE

This content has moved.

Please go to bagder/TRRprefs for the current incarnation of the docs, and please help us out polish and maintain this documentation!

Faking DNS from userland

To give false DNS responses from userland we need to handle different type of syscalls : gethostbyname(), gethostbyname2(), getaddrinfo(), getnameinfo(), etc. To cover all these cases, and to prevent leaks to real dns servers, we will use two libraries : libresolv_wrapper and libnss_wrapper.

Installation

Install resolv_wrapper and nss_wrapper, either from sources or from your favorite Linux distribution.

Story: Writing Scripts with Go

This is a story about how I tried to use Go for scripting. In this story, I’ll discuss the need for a Go script, how we would expect it to behave and the possible implementations; During the discussion I’ll deep dive to scripts, shells, and shebangs. Finally, we’ll discuss solutions that will make Go scripts work.

Why Go is good for scripting?

While python and bash are popular scripting languages, C, C++ and Java are not used for scripts at all, and some languages are somewhere in between.

2021 Update: Easiest option is Justin's repo and image

Just run this from your Mac terminal and it'll drop you in a container with full permissions on the Docker VM. This also works for Docker for Windows for getting in Moby Linux VM (doesn't work for Windows Containers).

docker run -it --rm --privileged --pid=host justincormack/nsenter1

more info: https://github.com/justincormack/nsenter1

	package main

	import (
	"fmt"
	"log"

	"github.com/miekg/dns"
	)

	// adapted from https://gist.github.com/walm/0d67b4fb2d5daf3edd4fad3e13b162cb

	#!/usr/bin/env bash

	set -Eeuo pipefail
	trap cleanup SIGINT SIGTERM ERR EXIT

	script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)

	usage() {
	cat <<EOF
	Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...]

	import sys
	import time
	import dateparser
	import pytz
	import json
	import csv

	from datetime import datetime
	from binance.client import Client

	# -- mode: ruby --
	# vi: set ft=ruby :

	# This script to install Kubernetes will get executed after we have provisioned the box
	$script = <<-SCRIPT

	# Install kubernetes
	apt-get update && apt-get install -y apt-transport-https
	curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg \| apt-key add -
	cat <<EOF >/etc/apt/sources.list.d/kubernetes.list

	# uses the date_to_milliseconds and interval_to_milliseconds functions
	# https://gist.github.com/sammchardy/3547cfab1faf78e385b3fcb83ad86395
	# https://gist.github.com/sammchardy/fcbb2b836d1f694f39bddd569d1c16fe

	from binance.client import Client
	import time

	def get_historical_klines(symbol, interval, start_str, end_str=None):
	"""Get Historical Klines from Binance

	# https://www.quantopian.com/posts/technical-analysis-indicators-without-talib-code

	import numpy
	import pandas as pd
	import math as m

	#Moving Average
	def MA(df, n):
	MA = pd.Series(pd.rolling_mean(df['Close'], n), name = 'MA_' + str(n))
	df = df.join(MA)