Posts by Tags

6502

AES

API

AWS

Active Directory

CRTP Certification Review

23 minute read

A couple of days ago I took the exam for the CRTP certification by Pentester Academy. In this review I want to give a quick overview of the course contents, ...

Alternate Data Streams

Apache

Aranet4

Assembly

Bash

Using vi commands in your bash shell

2 minute read

Entering a long shell command and then moving the cursor around to correct parts of it always felt a bit clunky to me. I remembered some of the <ctrl>/...

Binary Exploitation

Bokeh

Boto

Brute-forcing

Bypass

CRTP

CRTP Certification Review

23 minute read

A couple of days ago I took the exam for the CRTP certification by Pentester Academy. In this review I want to give a quick overview of the course contents, ...

CVE

Certifications

CRTP Certification Review

23 minute read

A couple of days ago I took the exam for the CRTP certification by Pentester Academy. In this review I want to give a quick overview of the course contents, ...

Cheat sheet

LaTeX mathematics cheat sheet

10 minute read

LaTeX is the de facto standard typesetting system for scientific writing. Find a a cheat sheet with the most frequent used mathematics commands here.

Command Injection

Cracking

Cron

Cryptography

Curl

DNS

Databases

Debugging

Remote debugging Claris Data API

13 minute read

When debugging code that integrates with the Claris FileMaker Data API, it is sometimes helpful to trace a request from your app all the way to the code of t...

Remote debugging NodeJS apps

11 minute read

When you want to debug an application in an environment which is hard to replicate locally and/or you cannot install additional software on the machine it is...

Debugging Jupyter notebooks

5 minute read

While searching for ways to debug code in a Jupyter notebook, I found a lot of outdated posts. So I decided to quickly write up my findings.

DevOps

Directory Traversal

Python tarfile directory traversal

12 minute read

Currently, there’s a lot of hype around the behavior of Python’s tarfile module for extracting archives. In short: tarfile will not sanitize filenames in arc...

Docker

EC2

ESXi

El Capitan

Excel

Exponents

The basics of Logarithms – with examples

26 minute read

Logarithms are widely used in computer science (e.g. for algorithm analyses, floating point number limitations, scaling data, feature transformations). Not c...

File transfer

Flask

Forensics

GDB

GRUB

HTTP

Hardware

Building a 6502 Computer

70 minute read

My notes of building a computer based on the 6502 microprocessor following Ben Eater’s design.

IPv4

Basic understanding of IPv4 addresses

16 minute read

In a recent project I needed to anonymize IP addresses in tracking data. While masking a few bits from an IP address is not so interesting, it’s a good excus...

IPv6

Basic understanding of IPv4 addresses

16 minute read

In a recent project I needed to anonymize IP addresses in tracking data. While masking a few bits from an IP address is not so interesting, it’s a good excus...

IaC

Information Disclosure

Input Validation

Invoke-WebRequest

Iodine

JavaScript

Jupyter

Debugging Jupyter notebooks

5 minute read

While searching for ways to debug code in a Jupyter notebook, I found a lot of outdated posts. So I decided to quickly write up my findings.

LLDB

LXC

LaTeX

LaTeX mathematics cheat sheet

10 minute read

LaTeX is the de facto standard typesetting system for scientific writing. Find a a cheat sheet with the most frequent used mathematics commands here.

Lambda

Laravel

Linux

Local File Disclosure

Log Poisoning

Logarithms

The basics of Logarithms – with examples

26 minute read

Logarithms are widely used in computer science (e.g. for algorithm analyses, floating point number limitations, scaling data, feature transformations). Not c...

Logging

Malware

MathJax

LaTeX mathematics cheat sheet

10 minute read

LaTeX is the de facto standard typesetting system for scientific writing. Find a a cheat sheet with the most frequent used mathematics commands here.

Matplotlib

Meta

A few updates

8 minute read

After having neglected my blog over the last few months, I want to start posting more frequently again (New Year’s resolutions and all that).

MySQL

NAT

NTFS

Networking

Networks

Basic understanding of IPv4 addresses

16 minute read

In a recent project I needed to anonymize IP addresses in tracking data. While masking a few bits from an IP address is not so interesting, it’s a good excus...

NodeJS

Remote debugging Claris Data API

13 minute read

When debugging code that integrates with the Claris FileMaker Data API, it is sometimes helpful to trace a request from your app all the way to the code of t...

Remote debugging NodeJS apps

11 minute read

When you want to debug an application in an environment which is hard to replicate locally and/or you cannot install additional software on the machine it is...

Numpy

ODBC

Working with FileMaker data in Python

14 minute read

This is an old post. You may also be interested in accessing your FileMaker database via the new Data API. I wrote a Python wrapper to make it easier: python...

Open Source

PBKDF2

PHP

PRTG

Pandas

Working with FileMaker data in Python

14 minute read

This is an old post. You may also be interested in accessing your FileMaker database via the new Data API. I wrote a Python wrapper to make it easier: python...

Pickle

Pivoting

PowerShell

Proxies

RDP

REST

RFI

Registry

Regular Expressions

Remote code execution

Reverse Engineering

Ruby

SMB

SQL

SQL Injection

SSH

SSL

SSRF

SVG

SeLoadDriverPrivilege

Serialization

Serverless

Sets

Sierra

Signals

Sudo

Beware of wilcards paths in sudo commands

7 minute read

Say you want to allow a non-root user on Linux to execute a couple of scripts as root or another user with more privileges. A common way of doing this is to ...

Systems Manager

TCP/IP

Basic understanding of IPv4 addresses

16 minute read

In a recent project I needed to anonymize IP addresses in tracking data. While masking a few bits from an IP address is not so interesting, it’s a good excus...

Terraform

Tomcat

Updates

A few updates

8 minute read

After having neglected my blog over the last few months, I want to start posting more frequently again (New Year’s resolutions and all that).

VPN

Virtualization

Visualization

WAR

WSGI

Windows

CRTP Certification Review

23 minute read

A couple of days ago I took the exam for the CRTP certification by Pentester Academy. In this review I want to give a quick overview of the course contents, ...

Wireshark

Wordpress

XML

XXE

allgood

authbind

bleak

crontab

launchctl

launchd

log2http

macOS

nginx

procdump

python-fmrest

A few updates

8 minute read

After having neglected my blog over the last few months, I want to start posting more frequently again (New Year’s resolutions and all that).

systemd

tar

tarfile

Python tarfile directory traversal

12 minute read

Currently, there’s a lot of hype around the behavior of Python’s tarfile module for extracting archives. In short: tarfile will not sanitize filenames in arc...

vi/vim

Using vi commands in your bash shell

2 minute read

Entering a long shell command and then moving the cursor around to correct parts of it always felt a bit clunky to me. I remembered some of the <ctrl>/...

wget

xlwings