johnfosborneiii

Container Images

Kubernetes

Verify single image

$ cosign verify registry.k8s.io/kube-apiserver-amd64:v1.25.2

Get the download URLs for the latest version of all Wolfi packages

https://github.com/jonjohnsonjr/apkrane

$ apkrane ls https://packages.wolfi.dev/os/x86_64/APKINDEX.tar.gz --latest --full

philroche

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# 
# This is how I used it:
# $ cat ~/.bash_history | python bash-to-zsh-hist.py >> ~/.zsh_history

import sys
import time

rcj4747

#!/bin/bash -eu
set -o pipefail

# Run a command and report status to https://healthchecks.io
usage() {
	echo "Usage: $0 <healthchecks.io UUID> <command>"
	exit 1
}
trap usage EXIT

rcj4747

"""
Play with AWS EC2 describe_instance_types
"""

from boto3.session import Session

sess = Session()
ec2c = sess.client('ec2')

resp = ec2c.describe_instance_types()

ThinGuy

#!/bin/bash
##############################################################################
# ossa.sh - Open Source Security Assessment 
#
#
#  Author(s): Craig Bender <[email protected]>
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, version 3 of the License.

calexandre

#!/bin/bash
# Inspired on https://david-kerwick.github.io/2017-01-04-combining-zsh-history-files/
set -e
history1=$1
history2=$2
merged=$3

echo "Merging history files: $history1 + $history2"

test ! -f $history1 && echo "File $history1 not found" && exit 1

smoser

Mappings for DMI/SMBIOS to Linux and dmidecode

Information can be put into dmi tables via some qemu-system hosts (x86_64 and aarch64). That information is exposed in Linux under /sys/class/dmi/id and can be read with dmidecode. The names are very annoyingly inconsistent. The point of this doc is to map them.

See qemu-system-x86_64 --help for the fields that qemu will accept. qemu smbios flags vary with qemu version.

Mappings

Example qemu cmdline:

qemu-system-x86_64 -smbios type=,field=value[,...]

smoser

backdoor-image

Description

backdoor-image can be used to easily add user with passwordless sudo access to a image or a root filesystem.

Operating on an image requires the 'mount-image-callback' tool from cloud-utils. That can be installed on ubuntu via apt-get install -qy cloud-image-utils.

rcj4747

#!/usr/bin/env python3
"""Generate a presigned URL to download an S3 object

<cmd> bucket_name key_name [expiration_days]"""

import sys

import boto3
from botocore.client import Config

philroche

#!/bin/bash
## Pass local .tar.gz path as first argument

# Update the following variables
# This will be created if it does not exist
ACCOUNT_NAME="philrocheubuntu"

#  This will be created if it does not exist
CONTAINER="philrocheubuntuimages"
# Customize this as all vm resouces with this group will be cleaned up. This will be created if it does not exist