Skip to content

Instantly share code, notes, and snippets.

Avatar

Koen Rouwhorst koenrh

View GitHub Profile
@koenrh
koenrh / proxify-vmware-fusion-vm.md
Created Jul 8, 2019
This is a little guide that helps you to "proxify" a VMware Fusion virtual machine on macOS. This can be useful if you want to isolate and analyse web traffic to/from an application by running it in a VM.
View proxify-vmware-fusion-vm.md

Proxifying a VMware Fusion virtual machine on macOS

This is a little guide that helps you to "proxify" a VMware Fusion virtual machine on macOS. This can be useful if you want to isolate and analyse web traffic to/from an application by running it in a VM.

Prerequisites

  • VMware Fusion 11 Pro
  • Transparent HTTP/HTTPS proxy (e.g. Burp Suite Pro or mitmproxy)
@koenrh
koenrh / gcp-gpu-vm-hashcat.md
Last active Nov 29, 2020
Running Hashcat on Google Cloud's new GPU-based VMs
View gcp-gpu-vm-hashcat.md

Running Hashcat on Google Cloud's GPU-based VMs

In February 2017, Google announced the availability GPU-based VMs. I spun up a few of these instances, and ran some benchmarks. Along the way, I wrote down the steps taken to provision these VM instances, and install relevant drivers.

Update April 2019: Updated instructions to use instances with the Tesla T4 GPUs.

View flush-ocsp-cache.md

How to flush the OCSP cache

Mac

  1. Open Terminal.app.
  2. Copy the following line and hit Enter.
  • sqlite3 ~/Library/Keychains/*/ocspcache.sqlite3 'DELETE FROM ocsp;'

Windows

@koenrh
koenrh / gh-org-bundle-audit.sh
Last active Mar 19, 2019
Run bundle-audit on all repositories in your GitHub organisations. Requires jsawk and bundler-audit.
View gh-org-bundle-audit.sh
#!/bin/bash
org=blendle
token=$GITHUB_BUNDLE_AUDIT_API_TOKEN
gh_api_host=api.github.com
gh_raw_host=raw.githubusercontent.com
gh_repos_url="https://$gh_api_host/orgs/$org/repos?type=sources&per_page=1000"
bundle-audit update
for repo in $(curl -s -H "Authorization: token $token" "$gh_repos_url" | jsawk -n 'out(this.name)'); do
View nl-nieuwsmedia-https.txt
| | | | HTTPS | Secure | |
| Naam | Host | HTTPS | default | sessie-cookie | Opmerking(en) |
|-------------------------+----------------------------+-------+---------+---------------+------------------------------------------------------|
| Algemeen Dagblad | www.ad.nl | nee | nee | JA | alleen login (via caps.ad.nl) |
| AT5 | www.at5.nl | nee | nee | nee | wachtwoord over HTTP |
| Blendle | blendle.nl | JA | JA | JA | |
| BNR | www.bnr.nl | nee | nee | - | wachtwoord over HTTP, sessie-id in query string |
|
View app-access.md
View keybase.md

Keybase proof

I hereby claim:

  • I am koenrh on github.
  • I am koen (https://keybase.io/koen) on keybase.
  • I have a public key whose fingerprint is 2DF9 C434 0486 A4A2 7073 CDE8 D049 F80B 2020 3178

To claim this, I am signing this object:

@koenrh
koenrh / RSAC.md
Last active Jan 2, 2016
Cancellations RSA Conference 2014
View RSAC.md

RSA Conference 2014: cancellations

List of people who have cancelled either their session (e.g. talk, panel participation or seminar) at RSA Conference 2014.

Date Name Job title More info
2014-01-20 Roel Schouwenberg Senior Researcher, Kaspersky Lab Tweet
2014-01-09 Jim Manico Global Board Member, OWASP and VP of Security Architecture, WhiteHat Security Tweet
2014-01-09 Eoin Keary Global Board Member, OWASP and Director, BBC Risk Advisory Tweet
2014-01-07 Chris Palmer Software Security Engineer, Google [Tweet](https://twitte
@koenrh
koenrh / most-recent-svn-tag.ps1
Last active Dec 17, 2015
While working on continuous integration, I needed the name of the most recently created tag in a Subversion repository. So I wrote a little PowerShell script that would find the name for me by looking in the Subversion log.
View most-recent-svn-tag.ps1
Param(
[string]$Url = "svn://my.repo.url",
[string]$Username = "krouwhorst",
[string]$Password = "secret"
)
Function Get-SubversionLog {
([xml](svn log $Url --xml --verbose --username $Username --password $Password)).log.logentry | ForEach {
$item = $_
$_.paths.path | ForEach {
You can’t perform that action at this time.