mattmc3

Example splitting string on slash character in ZSH.

$ str=part1/part2/part3
$ parts=(${(@s:/:)str})
$ echo $parts
part1 part2 part3
$ echo ${#parts[@]}
3

korc

package main

import (
	"crypto/tls"
	"flag"
	"fmt"
	"io"
	"log"
	"net"
	"net/textproto"

mageddo

#include <jvmti.h>
#include <cstring>
#include <iostream>

void debug(char* msg...){
//    printf(msg);
}

int loadJar(JNIEnv *jni){

evert0n

from django.db.models import Field
from django.conf import settings
from django.utils.decorators import cached_property


class VirtualField(object):
    """
    A virtual field, mainly used for caching and seamless computed field retrieval.
    This acts both like a (cached) property and a virtual field if supported.
    """

darwin

Today I wanted to move existing APFS-resident macOS Catalina installation to a new disk. I upgraded my late 2014 Mac Mini with a shiny new 1TB SSD. This took way too many hours of my life I will never get back. Hope this saves some time to you.

Good news:

1. it is possible to create a DMG image from existing APFS container with macOS Catalina installation including metadata needed for complete restore (the DMG contains OS, OS Data, Preboot, Recovery and VM volumes)
2. it is possible to restore this DMG image into empty APFS container and get a bootable copy of the original system

This information is relevant for Catalina (I'm currently running macOS 10.15.1).

darconeous

Tesla Key Card Protocol

Researched by Robert Quattlebaum darco@deepdarc.com.

Last updated 2020-02-03.

seanw2020

How to configure an SSH CA, with visuals

SSH CA

For details, see "Mastering SSH", Second Edition, Chapter 14: Certificate Authorities. Also see 'man ssh-keygen': "ssh-keygen supports signing of keys to produce certificates that may be used for user or host authentication. Certificates consist of a public key, some identity information, zero or more principal (user or host) names and a set of options that are signed by a Certification Authority (CA) key. Clients or servers may then trust only the CA key and verify its signature on a certificate rather than trusting many user/host keys. Note that OpenSSH certificates are a different, and much simpler, format to the X.509 certificates used in ssl(8).

Create two CAs

Choose a computer to act as the CA. We'll call this the CA computer (not CA host, since "host" is overloaded here). In this examp

Manzanit0

# Dependencies:
#      {:httpoison, "~> 1.5"},
#      {:floki, "~> 0.21.0"}
#      {:benchee, "~> 1.0"} (Only for benchmarking – not in the script)


defmodule CrawlQueue do
  use Agent

  def start_link(urls) do

da-n

unlocking rootfs via ssh login in initramfs

You can unlock your rootfs on bootup from remote, using ssh to log in to the booting system while it's running with the initramfs mounted.

Setup

For remote unlocking to work, the following packages have to be installed before building the initramfs: dropbear busybox

The file /etc/initramfs-tools/initramfs.conf holds the configuration options used when building the initramfs. It should contain BUSYBOX=y (this is set as the default when the busybox package is installed) to have busybox installed into the initramfs, and should not contain DROPBEAR=n, which would disable installation of dropbear to initramfs. If set to DROPBEAR=y, dropbear will be installed in any case; if DROPBEAR isn't set at all, then dropbear will only be installed in case of an existing cryptroot setup.

nstarke

Reversing Raw Binary Firmware Files in Ghidra

This brief tutorial will show you how to go about analyzing a raw binary firmware image in Ghidra.

Prep work in Binwalk

I was recently interested in reversing some older Cisco IOS images. Those images come in the form of a single binary blob, without any sort of ELF, Mach-o, or PE header to describe the binary.

While I am using Cisco IOS Images in this example, the same process should apply to other Raw Binary Firmware Images.