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hackthebox.eu/reversing: vmcrack 11 Jul, 2021

Because this challenge is still active, in order to read the rest of this article you have to provide the HTB flag. The article will be freely available once this challenge gets retired on...

crackmes.one : pranav's FinalFight crackme 14 Jun, 2021

Long time no see, eh? Seemed like I had nothing better to do this weekend so I've decided to check what's new (and unsolved) on Crackmes.one I've picked "pranav's FinalFight crackme", due to the...

Reverse engineering "Win Speedup 2018" 4 Oct, 2018

Reverse engineering and analysis of a scareware

ESET - Malware analyst challenge 31 Jul, 2018

I finally decided to try this one. Ok I lied. I tried it like, 2 years ago but never finished it, so the time has come.

crackmes.one : TheClueCreator's AGZ Crackme 5 3 May, 2018

Seems like I got the Stockholm syndrome, because even thought I dislike Java (and I really mean it), I'm starting to enjoy reverse engineering it. That's a terrible perspective and I should fight it...

crackmes.one : noverify's GraxCode's Java CrackMe 1 1 May, 2018

How i defeated the GraxCode's obfuscation and solved the crackme.

Battelle: Cyber Challenge 1 Dec, 2017

I was again lurking for sweet, sweet reverse engineering challenges and stumbled upon these, released by Battelle. They have a set of challenges - one for reverse engineering, one for shellcode...

Ceaser Creek Software RE challenges 26 Nov, 2017

Just recently I found this challenge released by Ceaser Creek Software - a Ohio based software security company. The challenge is designed as entry level "interview" for potentially new...

HackThisSite.org - Application challenges 19 Nov, 2017

This is something I was planning for a long time. THIS ARTICLE IS A GIANT SPOILER! If you haven't completed the achievements already but plan to do it some day, you should stop reading it.

Reverse engineering REALbasic applications 15 Jul, 2017

I was fiddling around with the application challenges of HackThisSite.org and it turned out the first few are compiled with REALbasic. Throwing in in IDA didn't help a lot, so here's an article...

Old threat in new pants (the NRA trojan) 22 Mar, 2017

The good old scaremongering threat, targeting the Bulgarian users has returned, and this time it's in brand new pants.

7Script.exe - Reverse engineering the license scheme 15 Mar, 2016

You know what's stupid in multiplayer games? Cheating. You know what's even worse? Selling cheat tools to assholes who cant play. So, in the next "few" lines, I'm about to take a look at a cheat...

MiniPro : Reverse engineering the InfoIC.dll 13 Sep, 2015

From quite some time already I got interested in the art of electronics and more specifically into hardware reverse engineering. Since I'm mostly interested in the device's firmware, I have to deal...

In depth analysis of malware obfuscations 9 Aug, 2015

I've started this article with the idea to throw some light on the latest malware obfuscation trends.

crackmes.de : Grzzlwmpf's CrackMe 5 Jan, 2014

A stretchy, but full solution to a .NET CrackMe by Grzzlwmpf.

crackmes.de : MaxXor's KeygenMe V6 27 Dec, 2013

Solution to MaxXor's KeygenMe V6, including full list of valid serials and keygen source.

crackmes.de : CrackMe v1.1 by Greedy_Fly 16 Oct, 2013

Here's how i defeated that challenge. The crackme is seems to be written in assembly language (MASM/FASM?) so the code is pretty clear. As usual I've loaded the EXE in ollydbg to take a quick look...

Soldier of Fortune - bugfix 3 Apr, 2013

I'm continuing to play outdated games, and after completing Max Payne, I've remember about another first person shooter classic - Soldier of Fortune

Command & Conquer - map corner bugfix 24 Mar, 2013

While playing the first game of the series (the one released back in 1995) I've encountered a really annoying bug, when trying to unveil the fog of war in the map corners

Predicting numbers - Visionaire 3.x XOR encryption 23 Feb, 2013

I wanted to write this one, as a hint to everyone interested in cryptography and breaking into algorithms. It might not cover your current task, but at least you may get an idea for a exploit...

DirectMusic under Windows 2003 20 May, 2012

Ever tried to play old games on a nowadays machine without any problems? Well yesterday I was bored and decided to play "Battlefield 1942". After executing BF1942.exe the screen just blinked for a...

"The big bang theory" easter egg (sort of) 19 Mar, 2012

At the beginning of episode 5 from season 5, the scene where Wil Wheaton enters the shop, there is a large QR code on the seller's counter...

Botnet analysis PictureXX.JPG 12 Mar, 2012

Few people already send me a samples of this one few weeks ago, so i decided it will become a nice material out of it.

Zeit² [squared] - rebuilding your own Zeit2.resources.dll 30 Nov, 2011

So you like modding games, eh? Here's something for anyone interested in translating Zeit2. By default the game comes with the following languages included - English(Default), Spanish, Italian,...

Code obfuscation and Lighty Compressor unpacking 25 Oct, 2011

After a week spent in analyzing, screenshooting, writing (and other things that i don't want to mention), i gladly present you this interesting material about defeating code obfuscation and "Lighty...

Extracting SWF from Flash Projector 25 Sep, 2011

Ever wondered how to extract a SWF file from Adobe's Flash Projector? There is already both free and paid (LOL!) programs which should do the trick, but it's so easy that it doesn't worth the effort...

"A New Beginning" - PNG fixing 16 Aug, 2011

A few days ago while unpacking some VIS3 archives from the game "A New Beginning" I noticed that all of its PNG files were broken. And by broken I mean you can't view them nor edit them. Seems like...

Torbutton 1.4.0 toggle button fix 4 Jul, 2011

Today I noticed that when you click on Torbutton with the left mouse button instead of starting the TOR support, a menu pops up - the same menu that you usually see when you click with the right...

Chatbox

Guest: i like to suck dick

Guest: I download one, put it in the modules folder, but the software still says there are no modules to load

Guest: Sorry I meant the modules

Guest: Stupid question but where do I put the library files?

Guest: F

Guest: poosay tight poosay clean poosay fresh

Guest: How can I dump the Rayman4.bf file?

Guest: k

Guest: upkk_fbq_v2

Guest: I have a question

Guest: Hi

Guest: smart install maker

Guest: why upkk_vis3.dll is not supported?

Guest: hi everyone

Guest: hi

Guest: Hola

Guest: hey

Guest: .000

Guest: Reverse Engineering books

Guest: ERP

Guest: mad max

Guest: art

Guest: res

Guest: TL866

Guest: hello from germany!!

Guest: hello from korea!

Guest: Hello from Russia!

Guest: rtcmsgbox

Guest: titan quest

XpoZed: there's no built in way to do that in unpakke, but you can write a python or batch script to process multiple folders ot files at once

Guest: every folder will be an ipk

Guest: does anyone know how to pack various folders at the same time on unpakke?

Guest: noptrix faggot

Guest: never

Guest: hi bro

Guest: oop

Guest: nope

Guest: does someone know how can i make the adventures of van helsing work?

Guest: where can i find uppk_bf.dll ?

Guest: where is the ubiart.umod?

Guest: fix broken PNG's

Guest: N2PK module anyone?

Guest: java

XpoZed: Unpakke 0.4 is command line only tool, you need to run it under cmd

Guest: Hello!! Can someone help me? I tried to open Unpakke 0.4, but it doesn't open. If i spam left click on the exe, they open, but tiping any leter make the window close. Thx in advance!!

Guest: uminelo

Guest: Deponia

Guest: .

Guest: help

Guest: hello

Guest: Im new here, i donload Unpakke and i want to unpak Deponia but the unpaker show me a error: "cant load module", where i find the module?

XpoZed: you tried

Guest: <script type="text/javascript> alert('test') </script>

Guest: hi

Guest: anything i can use for android games? i keep getting this cannot unpack modules error

Guest: a

Guest: How does 'fbq' set the module??

XpoZed: i do

Guest: Do niggas even look at the chatbox anymore?

Guest: YES I FOND IT WHO NEED MODULE FOR JUSTDANCE WII ITS UBIART.UMOD DOWNLOAD IT

Guest: Guys someone tell me what module you uses for wii games(Just Dance 2018-2020)

Guest: hi guys

Guest: Ps4

Guest: Hi! im trying to make a mod of just dance 2019 i see that you have to use this program can someone please tech me something?

Guest: Modding just dance 2019 for dolphin is tough can someone Teach something?

Guest: xd

Guest: Hi! im trying to make a mod of just dance 2019 i see that you have to use this program can someone please tech me something?

Guest: Nigger

Guest: unpakke is not working in just dance 2017 pc

Guest: how to install mondle?

Guest: where is MODULES unpakke for BSA fallout ?

Guest: where is MOD for BSA fallout ?

Guest: unpakke is not working in just dance 2017 pc

XpoZed: Не ми остава време напоследък

Guest: Проверявам, защото не си писал доста време вече ;)

XpoZed: да?

Guest: XpoZed жив ли си?

Guest: decompilation succeeded, edited file, CAB file make, but I can't insert the CAB file into the installer ;(

Guest: I want to replace or just edit one of the files from "Smart Install Maker" Installer. IT IS POSSIBLE?

Guest: How do you use key from vis3 key hound with unpakke?

Guest: and the only output is UPKK!CLM

Guest: i tried cmd line: unpakke.exe upkk_bf.dll unpack H:BIGFILESMusiques.bf E:ShareApps+Other.41

Guest: Hello, i really need to open BF file from the game New adventures of the Time Machine by Cryo Interactive. I BEG YOU PLEASE HELP ME

Guest: Hi, help me xD i just downloaded unpakke 0.4b and it wont open..

Guest: VBF

Guest: Don't let them get to you, Gospodin XpoZed~~ <3

XpoZed: woah, even more epic hacks!

Guest: darkpack

XpoZed: epic hack

Guest: <p align="center"><font face="$TitleFont" size="26" color="#000000" letterSpacing="0.000000" kerning="1">KO</font></p>

Guest: brother

Guest: hello

Guest: use the 0.4 ver

Guest: Три Морета и Транло бе!!

Guest: Me too

Guest: i like to suck cock

Guest: use the 0.4 ver

Guest: you must download the Additional libraries

Announcements

As you may have already noticed, I made a few changes on the site.
Before anything else and to keep it clean from the beginning, be sure to read the "terms and rules" of the site (there's a link down there). So, whats new?
• The look obviously, made by me in 2 days and the design skills of a sea snail. You either like it or hate it - I really don't care. If you like it however, you can still buy me a beer...
• You can now register an account on the site. Thats the only way to use a nickname on the chatbox or comment boxes. Otherwise, you will appear as "Guest". Ofcourse thats not the only reason you should consider registering. In the near future I am going to add a message board for better communication and few challenging additions, so it's up to you.
• The old shoutbox is now transformed into chatbox. Use it wisely, and don't type BBCode in it, or you may get automatically banned.

I think that's all that's interesting to mention here.

Now have a nice time at nullsecurity.org

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