@argilo

Amateur radio operator (call sign VE3IRR), Esperanto speaker, computer security researcher, and hardware hacker.

 Leamington, Ontario
irrational.net/
Joined August 2008
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  • Followers983
172Media
We are excited to announce that #GRCon23 will be held as an in-person event September 5-9 at @ASU in Tempe, AZ. Registration is currently open! gnuradio.org/grcon23 Want to present at this year’s conference? The Call for Participation is also open (abstracts due June 5).
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Save the Date! GNU Radio Conference 2023 (GRCon23) will take place September 5-9 in Tempe, AZ with live streaming available. Additional info & updates to follow on gnuradio.org. #grcon23
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Upcoming ARISS Contact with Maitland Air Cadet Association in Goderich, Ontario: Friday, December 16 - rac.ca/upcoming-ariss-contac…
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Attention #cybersecurity enthusiasts... We've just received some top secret intelligence: The dates for BSidesOttawa 2023 have been confirmed! Please mark your calendars for October 26th & 27th, 2023. We look forward to seeing you there!
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I have news for people who did the @BsidesOttawa CTF: I WAS THE ROBOT!!!!
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10 years! Check out the CTF if you’re attending. Hoping to see some familiar faces later today. :)
BSides Ottawa@BsidesOttawa28 Nov 2022
Happy 10th B-day BSidesOttawa! Feels like yesterday we were putting together the first BSidesOttawa. It’s been a long and amazing journey since those early days, and we have so much to be thankful for! BSidesOttawa: Nov 28th & 29th at Brookstreet Hotel. bsidesottawa.ca/attending-bs…
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Registration is now OPEN: visit bsidesottawa.ca/attending-bs… before they run out! First come, first serve! 🚨⏰ #BSidesOttawa2022
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Polarization Modulation?! Codes hidden in the spectrum of HDF5 GUPPI files. Custom OFDM. And messages in the closed captions of NTSC video! This year's CTF really had variety! Checkout Daniel's write-up of four of the challenges for details.
Daniel Estévez@ea4gpz2 Oct 2022
New blog post: GRCon22 Capture The Flag. Write-up of the challenges I submitted and some of the challenges I solved in the @gnuradio conference CTF. (1/n)
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I've also included my solutions for the Never the same color track by @argilo. This had an NTSC signal. A few flags were in the audio channels, another in some of the video frames, and two more in the closed captions. I made my own Python thing to get the frames. (5/6)
The waterfall of the signal in this challenge. For those familiar with analog video, it is apparent that this is a video signal.

ALT The waterfall of the signal in this challenge. For those familiar with analog video, it is apparent that this is a video signal.

One of the frames of the video. There is the GRCon22 logo, argilo's amateur radio callsign, and a QR code. Unfortunately this QR code is a rickroll...

ALT One of the frames of the video. There is the GRCon22 logo, argilo's amateur radio callsign, and a QR code. Unfortunately this QR code is a rickroll...

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New blog post: GRCon22 Capture The Flag. Write-up of the challenges I submitted and some of the challenges I solved in the @gnuradio conference CTF. (1/n)
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The Capture the Flag signals challenge at #GRCon22 is going well and the score at the top is very close! There's still time to join, there are challenges for complete beginners all the way up to DSP wizards. ctf.gnuradio.org
A plot of the CTF score over the first three days. The second, third, and fourth teams have nearly identical scores.

ALT A plot of the CTF score over the first three days. The second, third, and fourth teams have nearly identical scores.

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The GRCon 2022 CTF is about to begin! Sharpen your GNU Radio skills while searching for secret messages ("flags") hidden in mysterious signals. Join us on-site in the Ohio room, or online in the GRCon 2022 Capture the Flag matrix room. flag{g00d_luck!} ctf.gnuradio.org
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To join the Capture the Flag challenge head over to ctf.gnuradio.org and then join the chat room #grcon22-ctf:gnuradio.org on Matrix.
A plot showing a spectrum with two signals present in it, they are varying in frequency to make it slightly tricky to receive. Clayton Smith is standing next to the plot.

ALT A plot showing a spectrum with two signals present in it, they are varying in frequency to make it slightly tricky to receive. Clayton Smith is standing next to the plot.

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#GRCon22 is about to start! You'll find the streams on youtube.com/watch?v=1jJWfsGe… (shorter URL: grcon.stream) You need a matrix.org account to join the discussion. These are easy to get and free (we do pay for the chat server): events.gnuradio.org/event/18…
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GRCon22 Registration is Open 🎉 For more information about visit events.gnuradio.org/e/grcon2… #GRCon22 #GNURadio
Tickets available @ https://tickets.gnuradio.org/grcon22/

ALT Tickets available @ https://tickets.gnuradio.org/grcon22/

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𝗚𝗥𝗖𝗼𝗻𝟮𝟮 𝗖𝗮𝗹𝗹 𝗳𝗼𝗿 𝗣𝗮𝗿𝘁𝗶𝗰𝗶𝗽𝗮𝘁𝗶𝗼𝗻 𝗶𝘀 𝗢𝗽𝗲𝗻 Submissions for talks, papers, workshops, and more are now being accepted on the event website: events.gnuradio.org/e/grcon2…
GRCon22 in Washington, DC

ALT GRCon22 in Washington, DC

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Finally started a YouTube channel. youtube.com/watch?v=9LsJn0Cy…
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The March project update starts at 13:00 Eastern time, in one hour. Watch it live on Twitch or catch it later on YouTube. Do you have any news you want shared or questions answered? Let us know here or in the live chat. twitch.tv/gnuradio
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We are excited to announce that we plan to run GNU Radio Conference 2022 (GRCon22) as an in-person event September 26-30 in Washington, DC with live streaming. Additional info & updates to follow on gnuradio.org.
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The monthly GNU Radio project update starts at 1 Eastern on Twitch Major 3.10 release plus 3.9.5.0 and 3.8.5.0 maintenance releases Scheduler working group meeting on the 25th to discuss distributed flowgraphs FOSDEM Free Software Radio track is Feb 6th twitch.tv/gnuradio

GNURadio - Twitch

The official Twitch channel for the GNU Radio project (https://gnuradio.org) — GNURadio streams live on Twitch! Check out their videos, sign up to chat, and join their community.

twitch.tv
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