Few notes from CTF@CIT

During this weekend I had a moment to read what's new at CTFTime and that's how I found CTF@CIT prepared by HACK@CIT. Below you'll find few notes about it. Here we go...

Mobile Adventures: Fuzzing Android Browsers

In the meantime of last 3 weeks (beside looking for new projects;) of course) I was reading and learning about Android security. Below you'll find few notes about it. Here we go... 

Mobile Adventures: Cracking with Frida

This time I decided to prepare a small Lab for testing mobile applications. Because of the 'future work' I decided to stick with Android based environment. Below you'll find few notes about it. Here we go...

Cracking with Ghidra - Part 2

According to the previous part today we'll try to understand another 'crackme'. Here we go...

Intro to Ghidra

So ;) as we already 'can write' some ASM code - this time we'll try to read it... using Ghidra. Here we go...

Quick Intro to Linux Assembly

Some time ago I decided to get back to the ASM on Intel and refresh some of the basics. Below you'll find few notes about it. Here we go... 

Code16 - Notes Magazine 05

Hi :) Continuing the Notes Magazine below I prepared a new part for you - #05. Here we go...

Preloading Linux binaries

Using LD_PRELOAD to exploit/reverse binaries was presented to me in 2006. Below I will show you a very basic usage for some small example found online. Here we go...

Reading malware - unpacking ASPack 2.12

Today I decided to check some 'new samples available online' and that's how I found the one called "gwzsesxxgq.exe". Below you'll find the details. Here we go...

Cracking .Net - Anti-Reflector crackme

This time we'll check one basic crackme prepared in .Net. Below you will find the details. Here we go...

CrackMe for Beginners

I decided to create a „CrackMe for Beginners” paper to prepare some basic ideas and hints for new reversers. After a while there were a few 'papers' related to the subcjet so I decided to publish it on the blog. Below you will find the details. Here we go...

Stack overflow for beginners - part 2

In the meantime I decided to check (again) some cases related to buffer overflow bugs we can find during CTF(s). This time we will talk about buffer overflows in x64 architecture. Few notes you'll find below. Here we go...

Protostar CTF - Stack0

I decided to check one old CTF called Protostar (again;)). This time we will try to solve some 'stack challenges'. Let's start from the beginning...

Stack Overflows for Beginners - CTF - part 1

When I was searching for some 'new VM' at VulnHub I saw that there is a "Stack Overflows for Beginners: 1" CTF. I decided to try it...

Cracking .NET apps

Last time we had an opportunity to review few crackmes solutions. This time we will check how to solve crackme created in .NET. Here we go...

Few cracking notes

After a while I decided to go back to resources from crackmes.de (mirror I found here).
As usual, my main goal was to (more) understand ASM and (finally) print the 'congratulation' message. Let's try to do it... :)

Crackme by TORNADO

Yes yes, I know, whitout the patching... :)

Crackme by ZaKne

In C/C++ section here, you will find another crackme - this time it's called "ZaKne's crackme".
It's pretty simple to do:

Crackme #2 by Pride

Cool crackme by Pride from crackmes.de:

 

CrackMe #1 by DiABLO

Cool crackme by DiABLO - thanks - you can find it here.