Saturday, July 09, 2016

MavLink telemetry to FrSky Taranis using a Teensy converter

Recently I wanted to have sensors values from ArduPilot back into FrSky Taranis radio, mostly to be able to see my quadcopter's current altitude and GPS ground speed.
The goal is to have a nice real time display of telemetry sensors on Taranis LCD screen.

My quadcopter current setup is:

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posted by po.
Sunday, February 26, 2012

Solution to Codegate 2012 Net100

Challenge (with Big-Daddy team) :

Someone has leaked very important documents. We couldn't find any proof without one PCAP file. But this file was damaged.

The password of disclosure document is very weakness and based on Time, can be found easily.
Cryptographic algorithm is below.

Msg = "ThisIsNotARealEncryption!SeemToEncoding"
Key = 0x20120224 (if date format is 2012/02/24 00:01:01)
Cryto = C(M) = Msg * Key = 0xa92fd3a82cb4eb2ad323d795322c34f2d809f78

Answer: Decrypt(Msg)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Download : A0EBE9F0416498632193F769867744A3

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posted by po.
Thursday, December 22, 2011

Phdays Quals 2011

Earlier December I took part in the PHD CTF Quals with two friends of mine (Alkino and Siosm). Our notes are publicly available at fs.siosm.fr.

Keywords : phdays, ctf, scapy.

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posted by po.
Thursday, December 22, 2011

Solution to Virw's xc2 keygenme

About one year ago, I submitted on crackmes.de this solution to the keygenme xc2 made by Virw. Unfortunately, crackmes.de has been down for months by now, so I guess there is no harm to put both the challenge and the solution on this blog.

Keywords: keygen, windows, crc32.

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posted by po.
Thursday, December 22, 2011

Shellify : helper script for shellcoders

Shellify is a little bash script designed to help programming shellcodes. All it does is basically compiling your asm file using nasm, and then converting it to an hexadecimal representation.

You probably already own such a tool, and if you don't, then you should !

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posted by po.
Thursday, December 22, 2011

Challenges coming soon !

The challenges section is empty for now.

I am currently working on a few - hopefully - interesting challs, so expect to find crackmes and network related stuff in the future.

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posted by po.