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What is Staging Area in Git?

If you’re a software developer, you’re likely using Git on everyday basis. It’s a very useful tool that hardly anyone learns to use properly. I’d say it’s a little bit like with driving cars: we learn for a moment, pass an exam, then we don’t do anything to boost our skills. Sure, with time we […]

HackPy Part 3. – Wireshark

Scapy code sample

Reinventing the low-level network tools would never be complete without famous Wireshark and I’m going to fill this gap today. How to perform network analysis with scapy? Before we begin, I’d like to remind you that you can sign up to the newsletter to get info about latest post and support me on Patreon. The […]

HackPy Part 2. – Nmap scanning

Scapy code sample

In the last post I showed you how to reproduce traceroute’s behavior. Today I’ll show how to do the same with another famous tool – Nmap and specifically its half-open port scanning using Python with Scapy library. This has some great benefits because apart from learning something and having fun, you can extend the desired […]

HackPy Part 1. – Traceroute

Scapy code sample

Hi. Welcome to the first post in the series, where I am going to show you the capabilities of Python in terms of building your own tools. I have showed those examples on two meetups, but I feel they are worth sharing here for those of you who did not have an opportunity to see […]

Asynchronous Message Queue in Golang

Car queue

I have recently written an article about how to use Celery in Django projects. Celery is a message queue in Python. I though “OK, cool, now let’s take a look at how it can be implemented from scratch”. Concept of Message Queue The project has 3 parts: Client, which is sending tasks, Broker, which is […]

NodeJS Deserialization

This is a Pentester Academy challenge writeup. It required to exploit a CVE-2017-5941 vulnerability in NodeJS server application during deserialization to trigger an RCE. Warning this is a writeup so it contains spoilers. I am changing it a little bit in order to save you from revealing everything. Application Server consisted of two endpoints: / […]

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