Josh Enders joshenders

Decoding Base64-URL without padding

1) Add padding

Divide the length of the input string by 4, take the remainder. If it is 2, add two = characters at the end. If it is 3, add one = character at the end.

You now have Base64-URL with padding.

2) Translate to Base64

Exporting (iCloud) Keychain and Safari credentials to a CSV file

Update (October 2021)

Exporting password + one-time code data from iCloud Keychain is now officially supported in macOS Monterey and Safari 15 (for Monterey, Big Sur, and Catalina). You can access it in the Password Manager’s “gear” icon (System Preferences > Passwords on Monterey, and Safari > Passwords everywhere else), or via the File > Export > Passwords... menu item). You shouldn't need to hack up your own exporter anymore.

Original, Obsolete Content (2014)

After my dad died, I wanted to be able to have access any of his online accounts going forward. My dad was a Safari user and used iCloud Keychain to sync his credentials across his devices. I don’t want to have to keep an OS X user account around just to access his accounts, so I wanted to export his credentials to a portable file.

"A little bit of slope makes up for a lot of y-intercept"

01/13/2012. From a lecture by Professor John Ousterhout at Stanford, class CS140

Here's today's thought for the weekend. A little bit of slope makes up for a lot of Y-intercept.

[Laughter]

Successful mitmproxy-3.7 setup tested on OS X 10.13.6 and iPhone X running 12.1.4

Enable IP forwarding and disable ICMP redirects to keep the iPad sending traffic to the proxy

sudo sysctl -w net.inet.ip.forwarding=1
sudo sysctl -w net.inet.ip.redirect=0

net.inet.ip.forwarding
Enable IP forwarding between interfaces

	// HTTP client for testing high connection concurrency
	// Authors: Richard Jones and Rasmus Andersson
	// Released in the public domain. No restrictions, no support.
	#include <sys/types.h>
	#include <sys/time.h>
	#include <sys/queue.h>
	#include <stdlib.h>
	#include <err.h>
	#include <event.h>
	#include <evhttp.h>

	urlencode() {
	# urlencode <string>

	old_lc_collate=$LC_COLLATE
	LC_COLLATE=C

	local length="${#1}"
	for (( i = 0; i < length; i++ )); do
	local c="${1:$i:1}"
	case $c in

	# the following two lines give a two-line status, with the current window highlighted
	hardstatus alwayslastline
	hardstatus string '%{= kG}[%{G}%H%? %1`%?%{g}][%= %{= kw}%-w%{+b yk} %n*%t%?(%u)%? %{-}%+w %=%{g}][%{B}%m/%d %{W}%C%A%{g}]'

	# huge scrollback buffer
	defscrollback 5000

	# no welcome message
	startup_message off

	#!/bin/bash

	set -ue

	bash_trace () {
	typeset -i i=0
	for func in "${FUNCNAME[@]}"
	do
	printf '%15s() %s:%d\n' \
	"$func" "${BASH_SOURCE[$i]}" "${BASH_LINENO[$i]}"

	import os
	import sys
	import struct
	import ctypes
	import compress
	#compress.py from https://github.com/magical/nlzss/blob/master/compress.py
	#slightly modified padding

	def getWord(b, k, n=4):
	return sum(list(map(lambda c: b[k+c]<<(c*8),range(n))))

	#include <netdb.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <errno.h>

	#define CANARY "in_the_coal_mine"

	struct {
	char buffer[1024];