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Josh Enders joshenders

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cdown / gist:1163649
Last active May 5, 2021
Bash urlencode and urldecode
View gist:1163649
urlencode() {
# urlencode <string>
local length="${#1}"
for (( i = 0; i < length; i++ )); do
local c="${1:$i:1}"
case $c in
datagrok / gist:2199506
Last active Sep 22, 2020
Virtualenv's `bin/activate` is Doing It Wrong
View gist:2199506
catwell /
Last active Jan 17, 2020
Decoding Base64-URL without padding

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

ryo1kato / bash functrace
Created Jul 13, 2012
Backtrace for bash
View bash functrace
set -ue
bash_trace () {
typeset -i i=0
for func in "${FUNCNAME[@]}"
printf '%15s() %s:%d\n' \
"$func" "${BASH_SOURCE[$i]}" "${BASH_LINENO[$i]}"
advantis /
Last active Oct 18, 2020
Custom LLDB command for examining function arguments
import lldb
import shlex
def mem_location(arch, index):
index = int(index)
return {
'arm' : ("$r%d" % (index)) if (index < 4) else ("$sp+%d" % (index - 4)),
'armv7' : ("$r%d" % (index)) if (index < 4) else ("$sp+%d" % (index - 4)),
rmondello / gist:b933231b1fcc83a7db0b
Created Jan 7, 2015
Exporting (iCloud) Keychain and Safari credentials to a CSV file
View gist:b933231b1fcc83a7db0b

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

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.

This is the process I used to create a CSV file of his credentials in the format “,user,pass”. This portable format would be pretty easy to import into 1Password or Safari in the future.

The way I went about this isn’t great; it opens up more opportunities for apps to control one’s Mac through Accessibility APIs, it writes plaintext passwords to disk, and it could use some cleaning up. A better approach might leverage the security command line tool that ships with OS X. That said, I found this method to be a fun illustration of what’s possible us

smealum /
Created Jan 11, 2015
ninjhax stuff
import os
import sys
import struct
import ctypes
import compress from
#slightly modified padding
def getWord(b, k, n=4):
return sum(list(map(lambda c: b[k+c]<<(c*8),range(n))))
koelling / gist:ef9b2b9d0be6d6dbab63
Last active Feb 7, 2017
CVE-2015-0235 (GHOST) test code
View gist:ef9b2b9d0be6d6dbab63
#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];
joshenders /
Last active Feb 6, 2021
mitmproxy configuration for iPad

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

Enable IP forwarding between interfaces

loderunner /
Last active May 4, 2021
potential blog posts

ld – Wading through Mac OS X linker hell


Friend: I tried looking at static linking in Mac OS X and it seems nearly impossible. Take a look at this

Me: I have no idea what that -static flag does, but I'm pretty sure that's not how you link to a library. Let me RTFM a bit.

Minutes later...