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Plus d'nformations sur l'association.
Rejoignez-nous chaque mardi au weekly meeting, ouvert à tous.
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More information about our association.
Join us every tuesday at our weekly meeting (en), open to everyone.
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Launch an hidden service with Tor

Some of us followed this conference of Axel Beckert at Cosin 2019.

Go and watch the slides to learn some neat tricks on ssh. Anyway, in this page we will talk about a past workshop I found in the same author's site call Gate as a public, free VPN to reach your own server at home behind NAT.

So I'll show in few steps how I've managed to pull up an hidden web service via the Tor onion network.

Prepare to launch

All you need for your tor service.

Hello world

I've put together a simple hello world web service just for the purpose of showing something. Clone the expresshello repo from github or with:

  git clone https://github.com/pliski/expresshello.git

(For the records and for the curious it's done with Nodejs/Express/Typescript)


We will use docker to build up our service, because its simple, easy shareable, does not pollute your environment, etc etc.

So make sure you have Docker and docker-compose installed.

Tor Browser

To access the service you can get a tor browser here .

On Ubuntu I followed these steps in order to install it.


3,2,1 ... Tor

You should follow along the slides of the workshop if you want to have a better understanding of the process. Anyway here we will take a shortcut and use a docker-compose file, like one of those found in this useful repo, that I've adapted to launch our expresshello service.

So, go into the expresshello directory that you have already installed and type:

  docker-compose -f docker-compose.tor.yml up

And that's all. Compose will download the goldy/tor-hidden-service and expresshello docker images and run them; at the end, if all went well, you should see the Done message and the Express console waiting for some connection.

Retrieve the address

The goldy/tor-hidden-service docker image come with a nice utility to retrieve the address of your service. Type:

  docker exec -ti expresshello_tor_1 onions

Then copy the address (something like vegm3d7q64gutl75.onion:80) and paste it in the tor browser.

If you are still skeptic try the same thing from another machine/address.

Reach the stars

Now what?

Some practical(?) use cases/ideas.

Call Ground Control

Install docker in a Raspberry PI at your home and launch your remote home automation service. Or don't use docker and follow the slides.


You can try other images from docker hub or build your own. So why not an image of an SSH server that you could reach with something like:

  ssh -o 'ProxyCommand = nc -X 5 -x localhost: 9050% h% p' pi@kumd43gasfh6ywxt.onion

See this slide .


This was a very quick jump, I encourage you to follow the slides of the talk if you want to dig deeper (or fly higher!).

If you have other use cases or ideas of hidden services feel free to share them in the comments.

Split flap display

Prototype for a 4 characters splitflap display using transparent PMMA:

2019/06/10 06:58 · charafantah · 0 Pas de commentaires

Séance d'information - Nouveau local

Une opportunité s'est présentée pour partager un local dans la Zone Industrielle de Carouge avec une autre association. La décision sera voté lors de notre prochain AG le 8 mars 2019.

Le comité aimerait organiser une séance d'information afin d'éclaircir les détails de la proposition avant le vote.

Vous trouverez plus d'information sur les pages wiki suivantes:

Recherche local 2019

Zone Industrielle Carouge

La date choisi est le jeudi 21.02.2019 Merci de remplir le doodle suivant pour choisir une date qui conviendra aux max des membres:

NomSamedi 09.02 19hDimanche 10.02 15hDimanche 10.02 19hJeudi 14.02 19h30Vendredi 15.02 19h30Samedi 16.02 19hDimanche 17.02 15hDimanche 17.02 19hJeudi 21.02 19h30Vendredi 22.02 19h30Samedi 23.02 19hDimanche 24.02 15hDimanche 24.02 19hJeudi 28.02 19h30Vendredi 01.03 19h30Samedi 02.03 19hDimanche 04.03 15hDimanche 04.03 19h
Achraf 2019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:002019-02-15 23:45:00   
Thomas    2019-02-04 09:57:282019-02-04 09:57:282019-02-04 09:57:282019-02-04 09:57:282019-02-04 09:57:28         
sinux 2019-02-04 10:50:30 2019-02-04 10:50:302019-02-04 10:50:30 2019-02-04 10:50:30   2019-02-04 10:50:302019-02-04 10:50:30  2019-02-04 10:50:30   
Erik Rossen2019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:31  2019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:312019-02-04 12:02:31
David L   2019-02-09 12:44:00    2019-02-09 12:44:00    2019-02-09 12:44:00    
Magnus   2019-02-14 07:35:55    2019-02-14 07:35:55         
Boris        2019-02-16 10:09:59         
2019/02/04 09:51 · charafantah · 0 Pas de commentaires

Assemblée Générale Ordinaire 2019

Vous êtes cordialement invité(e) à notre Assemblée Générale ordinaire qui aura lieu le vendredi 8 mars 2019 à 19h30 précise dans nos locaux à Avenue de la Praille, 36 - Carouge.

Tous les membres sont priés d'y participer, de se faire excuser ou donner une procuration à un autre membre en utilisant le formulaire de procuration.

Veuillez consulter l'ordre du jour et inscrivez vous pour le repas.

2019/02/04 09:45 · charafantah · 0 Pas de commentaires

Label printer with web interface

Our Brother QL-570 label printer got an upgrade:

The setup is based on a Raspberry pi zero, running on wifi with the software “Brother QL web” by pklaus

2018/11/10 04:28 · charafantah · 0 Pas de commentaires
start.txt · Dernière modification: 2016/03/29 17:21 par t42