Solving the Cyberlympic Pwnable WGZLiveLabsTrivia

This year I competed for the first time in the Cyberlympics contest. This year it was created by warl0ckgam3z. Our 4-man team managed to get to the third round in Europe, but we wasted too much time on some challenges and were beaten by two of last years finalists. One of the challenges in round3 was a pwnable named WGZLiveLabsTrivia. I didn’t solve it during the contest, but the day after and still wanted to write about it. So sorry about the delay. but here finally is the write up. (Also the team, that did solve this during the contest, used the same principle).

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Resize Android Emulator Virtual Device

Lately I had to increase the size of an Android Emulator Virtual Device. I couldn’t simply recreate the device, cause I wanted to reserve all data and applications installed. Since it took me some while to figure out and find the instructions to do this, I decided to create this small Blog Post for future references.

To increase the size of a virtual device on Linux you can use the following commands.

Blizzard just stopped caring

I play World of Warcraft. Don’t judge, we all have some kind of addiction, this is mine. They released a new update in November which got me hooked again. I was excited to see the new content and especially the new raids.

I prepared my character as good as possible to enter the raids, used my in-game gold to buy some items to get me started.

Last Wednesday the new raid went live and we were able to kill 5 out of 7 bosses. Not a bad start, Thursday we would do the last two bosses and start to do the instance on heroic mode. But somehow we couldn’t enter the raid. Nobody on our realm could enter, you just got a message that you should be level 100 and in a raid group. Which of course we all were.
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Linux with RocketRAID 2320 – dataserver upgrade

A couple of months ago I decided to upgrade the OS of my dataserver. A server I created several years ago with 8 x 750GB hard disks serving a 4TB RAID-5 set. To handle the RAID-5 set I use a RocketRAID 2320 SATA-II Controller from HighPoint Technologies. Motherboard, CPU, memory and video card were replaced over the years, but the raid controller is still operational.

As OS I run Debian, started originally with Etch (I think) and in the years updated to now finally sid). Every update I had some trouble with the RocketRAID driver. Which I could solve with some tweaks.

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Cybercrime Challenge 2014

Dit jaar heb ik meegedaan aan de Cybercrime Challenge: Operation High Impact van Team High Tech Crime van de Nationale Politie (ontwikkeld in samenwerking met Tweakers en QCSEC). Mijn dank voor de leuke uitdaging!

Dit deed ik niet onverdienstelijk, was als 4e klaar met het digitale pad (waar Dmitry als eerste klaar was), en als 1e die het tactische pad had opgelost en dus ook beide paden.

2e plek Cybercrime Challenge

2e plek Cybercrime Challenge

Ik was de tweede in snelste tijd, moest alleen Crypto Sjon voor me dulden. (Screenshot is ten tijde van het schrijven van deze blogpost. Inmiddels zijn de antwoorden online te vinden en worden mensen dusdanig gehint dat een snelle tijd halen erg makkelijk is).

Hieronder een omschrijving van alle challenges en hoe ik het opgelost heb. (Sommige challenges maken gebruik van social media, kan zijn dat deze niet meer beschikbaar zijn, alle downloadbare content heb ik gemirrored).
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Steal WhatsApp update

When I wrote¬†Steal WhatsApp database (PoC) I never expected it to go viral. I only wrote the article for myself and the few readers of my weblog. My brother and I started the research out of curiosity and ended with this Proof of Concept and blog post. But I’m happy with all the discussion it starts and the awareness it creates by users. My post was not meant to bash Android, WhatsApp or Facebook. I’m a happy consumer of all those products, but only question some design decisions.

However there is some room for some credits and some clarification. Continue reading

Dagboek van Ivo


Lief dagboek,

vandaag ben ik een beetje moe, want mocht laat opblijven. Er waren oliebollen en er was vuurwerk. En ik mocht ook een glaasje champagne drinken. Ik heb ook goede voornemens voor dit jaar en dat is de Big Brother Award weer winnen. Want na drie keer winnen mag ik de wisselbokaal houden, ik heb al een plekje gereserveerd op de schouw. Nu ga ik een tukkie doen. Continue reading