Thread

Hijacking the PS5's RTMP stream

294 points · 92 comments · ibobev

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mixdup · 1790613714 · focus · HN ↗
Maybe I'm missing something but there seems to be a gap between "figure out the REAL hostname" and "we no longer have to worry about the stream never showing up on YouTube"
1. Aissen · 1790614179 · focus · HN ↗
  Me too. YouTube was given up, and what the op did was to use Twitch streaming and redirect it before the forward to a TLS-verifed server, bypassing verification:
  > redirects the actual stream to the Mac without any certificate issues.
  1. pierreortega · 1790618923 · focus · HN ↗
    [dead]
2. Sebb767 · 1790616067 · focus · HN ↗
  The live-video.net domain belongs to Twitch. So, from what I can gather, apparently the OP switched back to Twitch streaming and the last-hop RTMP server does not use certificates.
  1. fnctrev · 1790624626 · focus · HN ↗
    twitch doesnt actually require tls. it uses plain rtmp over port 1935 and rtmps over port 443.
charcircuit · 1790617008 · focus · HN ↗
Another crypto mistake by Sony this time leaving traffic completely unencrypted.
1. rf15 · 1790618148 · focus · HN ↗
  is it truly a security issue here?
  1. xd1936 · 1790621901 · focus · HN ↗
    My video stream sent to a public streaming audience might be seen by the public in transit!
    charcircuit · 1790623261 · focus · HN ↗
    Both YouTube and Twitch allow you to do non public streams.
  2. monster_truck · 1790621919 · focus · HN ↗
    Debatable, but historically quite a few consoles and handhelds have been popped wide open by leveraging defects or vulnerabilities in how media is handled. Without looking at an exhaustive list, I believe tif files have claimed the most victims with the next two being split between videos and then media within browsers.
tvbusy · 1790617606 · focus · HN ↗
PS5 uses DNS to resolve where to send RTMP stream. The author found out that they cannot spoof the main server since that server uses TLS and it's not possible to make the PS5 trust self made certificate. The author then runs a real Twitch stream and monitors DNS requests and finds DNS of the server that receives the RTMP stream and spoofs only that final server. It's more of a problem with RTMP protocol/Twitch security rather than the PS5.
1. bigfishrunning · 1790625690 · focus · HN ↗
  If sony wanted the ps5 to only send to twitch, they could absolutely enforce TLS authentication of the server, but they don't, so i guess send your video wherever.
Muromec · 1790617649 · focus · HN ↗
Don't mind me, I'm just sitting here with my HDMI-RX port on rk3588 being happy that is works and I didn't brick the board when doing uboot update to uncurse it.
1. concerneddork · 1790618023 · focus · HN ↗
  Lucy, esplain please.
  1. kotaKat · 1790619499 · focus · HN ↗
    rockchip something-or-other that's on the KiwiPi 5B. iirc it can strip hdcp and all that jazz, too? one of the ports is labeled "HDMI RX" for input.
    <a href="https://kiwipi.com/blog/rk3588-hdmi-in-test/" rel="nofollow">https://kiwipi.com/blog/rk3588-hdmi-in-test/
    bityard · 1790626751 · focus · HN ↗
    Man, that article has _all_ the AI smells. Here's the only interesting part:
    gst-launch-1.0 v4l2src device=/dev/video0 ! videoconvert ! autovideosink sync=false
    yjftsjthsd-h · 1790631214 · focus · HN ↗
    > I guess it just has an HDMI capture chip on-board. If you have a spare USB port, these are under $20 everywhere.
    Any decent ones? I own a few that I use for managing (semi)headless machines and they all manage maybe 2-3fps
    bschwindHN · 1790645053 · focus · HN ↗
    AverMedia makes decent ones. I think Magewell makes "professional" ones that give you the best image quality (4:4:4), but I haven't personally used them so can't attest to their quality.
    Then there are all kinds of USB cards from dubiously named manufacturers, most being some white label chip that everyone uses. Some can work decently, some have a terrible capture rate like you mentioned. Due to the nature of these sellers popping up and disappearing, I can't really make a recommendation.
    numpad0 · 1790656996 · focus · HN ↗
    [delayed]
    pjc50 · 1790672388 · focus · HN ↗
    Hah. A while ago I concluded that all the cheap PAL capture devices were so bad in software that my go-to setup became a PAL->HDMI converter followed by HDMI capture. It certainly crashed a lot less.
    sigio · 1790669308 · focus · HN ↗
    The $10-$20 ones on aliexpress should be fine in general. The $6 and below ones usually are SDTV/crap ones.
    pjc50 · 1790672302 · focus · HN ↗
    In this case it has a video encoder and and HDMI-in on the single SOC itself: <a href="https://rockchips.net/wp-content/uploads/2025/03/Rockchip-RK3588-Datasheet-V1.9-20241212.pdf" rel="nofollow">https://rockchips.net/wp-content/uploads/2025/03/Rockchip-RK...
    Muromec · 1790639951 · focus · HN ↗
    Opi5 plus rk3588 to be exact
tamimio · 1790617716 · focus · HN ↗
You can combine the last two steps the nginx and mpv with obs and gstreamer, or just gstreamer really.
PaulHoule · 1790620821 · focus · HN ↗
Vote with your $ and get a gaming PC. Don’t let people who remember the 1990s tell you it will be a sweaty experience, install Steam and it won’t be. There are like 15 exclusive games for the PS5, what’s the point?
1. tantalor · 1790621101 · focus · HN ↗
  I'd rather eat poison than use Windows.
  1. freshpaint · 1790621425 · focus · HN ↗
    Don’t use Windows. Try CachyOS or Bazzite.
    Gigachad · 1790632532 · focus · HN ↗
    Bazzite has been the most hands off linux distro I've ever used. I put it on my desktop and I only use it with an xbox controller at the TV. I've never had to plug in a keyboard or use a terminal. I don't even bother checking proton compatibility anymore, everything has just worked.
  2. zamalek · 1790621440 · focus · HN ↗
    Depending on what you play, you don't have to. But if you play draconian anti-cheat games then fair point.
  3. RankingMember · 1790622092 · focus · HN ↗
    <a href="https://store.steampowered.com/steamos/" rel="nofollow">https://store.steampowered.com/steamos/
  4. occz · 1790626578 · focus · HN ↗
    Linux works quite well for gaming these days. I have a desktop that used to run Windows 11, which is EOL, so I was faced with either upgrading to Windows 12 or trying out Linux on desktop.
    So far there have been zero games that have had issues. Granted I've only really had time to play 5 or so games, but I am genuinely impressed with how far it's come.
    ball_of_lint · 1790662938 · focus · HN ↗
    Can confirm. Have been playing games on Linux for years now and with proton, the vast majority of games just work. And there's protondb to fix up the rest.
    The one game I couldn't actually get working was Escape from Tarkhov because it has some windows-only anticheat. I.e. the developers chose to make it not work, not an accident.
  5. someonebaggy · 1790631366 · focus · HN ↗
    Valve's brought almost all games to Linux.
2. ImpostorKeanu · 1790622735 · focus · HN ↗
  I vote with my time by not maintaining drivers, setting profiles, and evading anticheat rootkits. Also, M$ is cancer.
  1. sampullman · 1790623124 · focus · HN ↗
    I just click "Install" and then "Play" in Steam on my non-Windows machine. I guess you can't play Fortnight or whatever, but it works great for me.
  2. volkercraig · 1790623208 · focus · HN ↗
    get an immutable linux distro
    SchemaLoad · 1790638905 · focus · HN ↗
    Immutability has been the greatest improvement on the linux desktop in a long time. I'd never recommend a traditional distro to someone who can't fix or install linux themselves because mutable distros tend to grow warts over time, and diverge from a clean state. Eventually requiring a reinstall to fix.
    But immutable distros stay in a clean state, updates become trivial and safe, and can roll back in case of a failure.
    Toslink · 1790658115 · focus · HN ↗
    [dead]
  3. PaulHoule · 1790623240 · focus · HN ↗
    Playing 20 or so games on my Steam Deck I had to edit one only .INI. The Steam Deck is the only device I've ever seen that pairs perfectly with AirPods every time, it beats Apple devices.
    I also have a big gaming PC/AI development with a NVIDIA GPU and, yeah, NVIDIA's app to maintain drivers is a little skeezy but I just download games on Steam and they "just work" though I am not really a day one kind of gamer unless it is a new Dynasty Warriors or Fate game.
    I'll grant that kernel anti-cheat sucks, if you play that kind of game and cheating bothers you well then... Maybe a locked down environment like the PS5 is a feature and not a bug.
    jameslars · 1790623745 · focus · HN ↗
    You kind of undermine your own argument here. The Steam Deck is more a console than a PC, with lots of "just works" baked in either directly or through community support that makes it simple.
    In 2026 I still have to mess with game settings, driver issues, and DRM garbage behavior as a primarily PC gamer. PC gaming is still a long way from "just works" and I think you probably just take for granted a lot of things you have to do to make it work vs a typical console experience.
    PaulHoule · 1790624896 · focus · HN ↗
    Look, in the 1990s I was horrified of PC gaming because I was always dealing with kids who thought they were having fun with their PC whereas they were really fighting with an ugly plastic oversized joystick that fell apart two times during a level and had to be recalibrated three times. Or that it was a sweaty battle with the keyboard and mouse that reprises the sweaty battle with the keyboard and mouse I have at work and with my productive hobbies.
    I got into console gaming in the late 00's and had a few portables and an Xbox 360 and a PS 3 just after they became obsolete and played through the libraries. My favorite games were games for the PS Vita from Japanese publishers like Altus, Idea Factory and Acquire. When Sony and the publishers quit investing in the Vita those games went right to Steam. And my experience with Steam is, "click on the Steam icon", pair the Xbox controller, use the controller to pick a game, and sit back. Like yeah, there still are sweaty keyboard-and-mouse games and I might even play one once in a while, but I'd say my experience on the big machine is "console like" with the condition that the kind of games I play are "console like" games.
    sleepybrett · 1790629532 · focus · HN ↗
    I haven't had a driver issue other than 'you didn't upgrade your drivers lately' on a gaming PC in years and years. The problem now with pc gaming is the cost to enter the market with the GPU, RAM and storage prices.
    yjftsjthsd-h · 1790633400 · focus · HN ↗
    In what sense is the steam deck more console than pc? I agree that there's convenience in it being a single target for people to work on, but it lets you run anything you want even on the stock operating system, and you can trivially replace that at will
    SchemaLoad · 1790638568 · focus · HN ↗
    The line between console and blurred significantly lately. Consoles became X86 machines running PC OSs but locked down. PCs gained options for console hardware with the same OSs.
    These days the only difference between PC and Console is having a locked down OS. Which makes consoles seem purely a worse product, but the difference used to be a lot more.
    jameslars · 1790638638 · focus · HN ↗
    I boot into a video games only interface. To update I click a single button. This is exactly a console interface and user experience
    Rohansi · 1790658026 · focus · HN ↗
    SteamOS is basically just a Linux distro with Steam preinstalled and set to autorun in Big Picture mode at boot. Everything you are describing is available in the plain Steam client because SteamOS runs the same client. You can just set your PC to boot into Steam and get 99% the same experience.
    jameslars · 1790686326 · focus · HN ↗
    I understand that. That doesn’t mean it’s not a console experience. I could also root other handhelds and consoles in the past to get more functionality out of them. Steam Deck never requires me to boot into anything but the gaming experience and games just work when I download them.
    Though it is rarer these days, PC gaming requires fiddling with stuff sometimes. Driver updates are my responsibility. OS updates are a separate endeavor too.
    PaulHoule · 1790640715 · focus · HN ↗
    The deck is a standard configuration they can test for, the “works with Steam Deck” badge sells product, game publishers covet it. Problems with Proton get worked out.
3. catchnear4321 · 1790623209 · focus · HN ↗
  Sorry, already own a PS5 and the money for replacements is spoken for.
  I think that was the point?
  1. PaulHoule · 1790624343 · focus · HN ↗
    To be fair with the current RAM prices I don't want to replace any device right now!
4. sleepybrett · 1790629452 · focus · HN ↗
  you'll be voting with a lot of dollars, look at the 4090 pricing these days? hell even the 4070 is north of a grand, JUST FOR THE GPU, now check the DDR5 prices...
  1. someonebaggy · 1790631419 · focus · HN ↗
    Do you actually need one?
    Manuel_D · 1790637658 · focus · HN ↗
    Running contemporary games at 4k60fps often demands a top of the line graphics card. If you're aiming for 120fps or higher you're absolutely looking at a 4090 or 5090.
    sleepybrett · 1790641083 · focus · HN ↗
    nah i got a 5070 at $675, but they are north of a grand now, and 5090s are 7k+
5. asimovDev · 1790666071 · focus · HN ↗
  I paid 400e for my PS5 in 2023. For the same budget, I'd need to hunt down used deals for hardware and then suffer through using Windows (if the hardware I buy ends up even working at all) because the only game I play requires annoying workarounds to work on Linux that technically break the ToS (since they bypass the kernel level anticheat) and could potentially end up in my account getting banned. I'd rather just put my PS5 on a VLAN and enjoy hassle free gaming with some downsides like not being able to stream my game to my friends on Discord once half a year. Don't get me started on DRMs and questionable PC ports where the 60 FPS targets in system requirements are under assumption of framegen and upscaling.
ImpostorKeanu · 1790622888 · focus · HN ↗
I'd kill for a Bluetooth peripheral workaround. I've a Clicks Power Keyboard that'd be great to use with the PS5.
1. ThatPlayer · 1790678398 · focus · HN ↗
  I thought Bluetooth keyboards work fine? <a href="https://www.playstation.com/en-us/support/hardware/keyboard-mouse-ps5/#pair" rel="nofollow">https://www.playstation.com/en-us/support/hardware/keyboard-...
rezonant · 1790623330 · focus · HN ↗
Imagine if they just let you specify your own RTMP destination. Crazy thought, I know.
1. alexfortin · 1790643853 · focus · HN ↗
  It seems like Sony has really mastered the fine art of being hated by its own customers.
londons_explore · 1790623348 · focus · HN ↗
Kinda sad that it's 2026 and this data still goes over the internet unencrypted...
RTMP and all the video and audio protocols behind it aren't trivial either - I bet there are hundreds of exploits waiting to be found that any three letter agency sitting on the internet can use to take over your PS5 and all credentials stored within too...
1. rezonant · 1790623579 · focus · HN ↗
  Well, the server just responds with acknowledgement information, the client is doing most of the work and most of the complex parts of RTMP are hand waved and faked by both the client and the server because no one cares about how Flash used to work.
  So somewhat unlikely to be able to exploit it but have at it hass.
  I'd imagine it'd be easier to exploit the server side, actually.
  1. londons_explore · 1790626635 · focus · HN ↗
    [delayed]
    rezonant · 1790631178 · focus · HN ↗
    I guarantee the RTMP process on a Playstation 5 is not running as root.
2. [deleted] · 1790626236 · focus · HN ↗
  [deleted]
3. opello · 1790627723 · focus · HN ↗
  Wouldn't this require a man-in-the-middle since the PS5 is transmitting data to a specific server, YouTube or Twitch in the article?
  There are extensions to RTMP to use encryption or even just TLS. But do you mean that the risk of fragments of audio and video bitstreams going out unprotected presents a remote code execution risk? That seems less a problem of vulnerability and more one of privacy.
4. someonebaggy · 1790631290 · focus · HN ↗
  I think everyone is just hardcoding a template RTMP conversation and not implementing it beyond looking for certain markers.
5. dylanger · 1790666367 · focus · HN ↗
  It is pretty wild that RTMP without any TLS is a thing, anyone in the chain, ISPs etc could just sit there and log all RTMP traffic and tap the stream at any time.
  1. londons_explore · 1790671285 · focus · HN ↗
    [delayed]
  2. hjkloinxbdj · 1790676588 · focus · HN ↗
    This is not correct, twitch (AWS IVS) supports rtmps.
    The OP didn’t intercept rtmp url, they intercepted the discovery endpoint.
6. happyweasel · 1790672586 · focus · HN ↗
  Tunnel it
jprjr_ · 1790625131 · focus · HN ↗
Feel like there's a few parts missing that I'm not getting.
The author mentions that the PS5 uses RTMPS to push video up to twitch - but suddenly it just uses plain RTMP?
1. sleepybrett · 1790629232 · focus · HN ↗
  because he switched to it's youtube integration which doesn't support RTMPS...
  1. mintplant · 1790634601 · focus · HN ↗
    But that integration kept timing out, so the author switched back to Twitch and somehow found a plain-RTMP endpoint that time. I'm also confused.
    jandrese · 1790643060 · focus · HN ↗
    He realized that the discovery server was just handing out another hostname, so even though he couldn't spoof the discovery server since he knew the hostname it was going to provide he put that in his local DNS and point it at his server.
    HanShotFirst · 1790644008 · focus · HN ↗
    As someone who works with RTMP/S a lot, I suspect the Twitch endpoint is accepting RTMP streams even if it specifies or usually expects RTMPS - I find very often that servers will accept both.
kcnaragam863 · 1790628114 · focus · HN ↗
[dead]
Transformanshen · 1790628156 · focus · HN ↗
Honestly the DNS trick in this post is neat but I'm not setting up dnsmasq just to share my screen. This is the kind of thing where Sony could just let you stream to anything and they don't, and it's annoying
1. wolttam · 1790639660 · focus · HN ↗
  I kind of think it's crazy to not have the ability to filter/rewrite DNS requests/responses on your home network (by any means, dnsmasq is just one of them)
barake · 1790629538 · focus · HN ↗
This is how Lightstream Studio has provided stream overlay for consoles[1]. Some years ago Microsoft added them as an official destination using a better protocol and dropped the need for MITM hackery.
I used to work in this space and Lightstream was always doing interesting things, even if they never seemed to find PMF.
1: <a href="https://support.golightstream.com/hc/en-us/articles/38643168399769-How-do-I-set-up-my-Playstation-4-or-5-to-send-to-Lightstream-Studio" rel="nofollow">https://support.golightstream.com/hc/en-us/articles/38643168...
1. jbs789 · 1790630578 · focus · HN ↗
  PMF… I love how we’ve invented a term which means “customers”. I know it’s not the point of your comment but the acronym in place of a common word will be tougher for folks to follow.
  1. Modified3019 · 1790633852 · focus · HN ↗
    Thanks, I had no idea what it meant (presumably “product market fit”). “Pull My Finger” was going to be my best guess.
  2. jonchurch_ · 1790643868 · focus · HN ↗
    In case anyone gets to learn this today…
    You can have customers without product market fit.
    A product that hasnt found PMF could be a solution looking for a problem, or it might solve a true problem but that problem isn't important, durable, or (crucially) common enough to sustain a business.
    So OP was saying that Lightstream Studios made some great stuff, but that ultimately the problem they were solving wasnt durable or widespread enough for the market to sustain the business they had built.
    Background on Lighstream Studios is they did a streamer setup in the cloud, so you didnt have to run OBS locally. A lot of people seemed to want that at the time, especially console gamers, but the market changed around them. Consoles are way better at streaming without any other stuff now, and PC gamers largely settled on running OBS (for free) on their own existing hardware. They had like 17k paying customers at one point, so customers wasnt the smoking gun here.
    jbs789 · 1790676018 · focus · HN ↗
    > wasnt durable or widespread enough for the market to sustain the business they had built
    So they didn’t have enough customers?
    barake · 1790690490 · focus · HN ↗
    That's one scenario. You can actually have sticky, engaged customers at huge scale, and even marginal profitability, while lacking Product-Market Fit. But breaking even/modest profits do not equal success for venture backed firms or mega-corps.
    A good example is the voice assistant hardware from Amazon and Google. The speakers are everywhere, basic daily use stats are likely solid, and retail display square footage remains huge. Yet almost no one will pay for the associated subscriptions or other premium services. The hardware was sold at a loss(?) expecting downstream revenue from services that customers simply don't value enough to buy.
    jbs789 · 1790710187 · focus · HN ↗
    > no one will pay
    Sounds like you don’t have a customer, in the sense that I will also accept a free chocolate bar someone hands me on the street but won’t pay for it.
    I take your point that PMF is useful to describe a thing. I just see it as a funny term to describe something obvious. But language evolves in different social groups and this is the language of SV.
  3. nemothekid · 1790729656 · focus · HN ↗
    There are plenty of businesses with customers that don’t sell products. The PMF distinction is useful because many startups are actually specialized consultants/agencies, not products.
    There are plenty of companies (successful ones) that I’d argue don’t have PMF, but have plenty of customers (ex Palantir)
drudolph914 · 1790630786 · focus · HN ↗
excited to try this! i’ve had this exact same want from streaming to discord on ps5
forestry · 1790631119 · focus · HN ↗
This is fantastic. Not being able to share my gameplay with friends on Discord is one of my biggest gripes.
1. asimovDev · 1790665353 · focus · HN ↗
  I used to remote play on a second user on the PS5 and then used the controller connected to my PS5 to log into my main user profile and then game from there whenever I wanted to stream something to my friend(s). That way the issue of needing to connect the peripherals to the computer was solved
qtalen · 1790649341 · focus · HN ↗
Building a gaming PC from scratch is getting more and more expensive these days. The PS5 doesn't come cheap either, so I've been thinking about using the streaming feature. Could it work if I bought a few PS5s, set up a little studio, and offered a cloud gaming service?
1. xyzsparetimexyz · 1790665662 · focus · HN ↗
  The market for game streaming is very sparse but with extremely low latency requirements. Doesn't seem economical.
darvo31 · 1790655006 · focus · HN ↗
Dealing with legacy protocols always uncovers interesting security quirks. RTMP on a PS5 just feels like peak enterprise tech.
1. Rohansi · 1790657126 · focus · HN ↗
  Twitch and YouTube use RTMP for receiving streams. They always have. Everyone streaming there uses RTMP.
2. asimovDev · 1790665205 · focus · HN ↗
  Sony supported PPPoE on the PS4, I wonder how many people used that (not counting the jailbreak exploit)
  1. 000000000001 · 1790695579 · focus · HN ↗
    The only time I've even looked at PPoE was for my A+, then to Jailbreak my ps4, never used it outside of that.
bit_rot73 · 1790655246 · focus · HN ↗
RTMP? That's a blast from the past for something so modern. Pretty clever to find an exploit there.
_madmax_ · 1790679535 · focus · HN ↗
If I was you I wouldn't advertise anything resembling a workaround about Sony's device as they are very keen on suing and swatting anyone looking under the hood of their "intellectual property".
neuronflux · 1790702495 · focus · HN ↗
[delayed]

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