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Flipper Zero: Multi-Tool Device for Geeks

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Re: Flipper Zero: Multi-Tool Device for Geeks

#321

Post by hythythythyt »

sofixa wrote: post #202
BossingAround wrote: post #197

Earlier quoted context omitted.

In other words, Chinese brands still have IR blasters. I don't know I would trust Chinese-brand of phones though.

Why not? Most phones are manufactured in China anyways, and Xiaomi, OnePlus, Honor, Oppo are major and very widely popular and used brands all over the world (outside of the US which is allergic to Chinese brands unless it's for cheap crap or to outsource manufacturing to).

I've always liked Xiaomi. At home, we have several of their phones, a vacuum cleaner, and some shoes (yes, shoes!). But a few months ago, my Chrome homepage changed to a Chinese search engine, and after looking online, it seems it was a Xiaomi error that affected quite a few people. Also, they include ads in their customization layer. This will be the last Xiaomi device I purchase.

Re: Flipper Zero: Multi-Tool Device for Geeks

#322

Post by devilsAdv0cate »

Telemakhos wrote: post #244
dangus wrote: post #231

Earlier quoted context omitted.

Outside of the US is a problem when it comes to availability and usability. I’m not going to buy a phone that doesn’t play nicely with my carrier or receive regionally relevant support. OnePlus is the only brand on that list that makes sense buying in the US. (Personally I can see why the IR blaster was removed as a feature in US phones. I can’t think of a time I wanted or needed it. How often are y’all losing remote…

I don’t have a television, and I haven’t owned anything with an IR port since the 2012 MacBook. I have zero use cases for IR blasters.

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Re: Flipper Zero: Multi-Tool Device for Geeks

#323

Post by devilsAdv0cate »

ChuckMcM wrote: post #41

This is a super fun gizmo, it's discord channel is, uh, not great. One cool thing is that you can talk to it serially. I pretty quickly had it organized with an IoT temperature sensor so that it could send commands to my ceiling fan given the temperature in my office. I have also used it to capture the NFC code on a hotel card key so that I could still get into my room even after my key was inevitably "damaged" by ne…

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Re: Flipper Zero: Multi-Tool Device for Geeks

#324

Post by sev1 »

python273 wrote: post #311
sev1 wrote: post #305

Earlier quoted context omitted.

Semantics aside, I think it's quite clear they are trying to mislead by giving the appearance of being an American company. What does their company address show on their website? Delaware. The report mentioned that their LinkedIn profiles changed from showing Moscow to Tbilisi. I'm sure I could also change my location to Tbilisi on my LinkedIn profile. How is that a meaningful argument? I don't want any amount of my…

I'm not sure why you assume malice intentions by default. Using a legal entity in a more convenient country for a startup seems like a common practice, including listing the address of such entity on the website. You'd be surprised how many companies are incorporated in America, pay taxes there, but have founders/employees/contractors elsewhere around the world. So, I personally wouldn't count it as active effort of…

Thanks for your condescending explanation of corporate practices. I'm sure the typical HN reader is completely ignorant to those facts. Perhaps you could also explain Russian corporate practices and ethics to us all.

Only you are saying anything about malice. Everything is easily explained by greed (or the desire to simply gain if you prefer softer language).

Re: Flipper Zero: Multi-Tool Device for Geeks

#325

Post by rft »

tkems wrote: post #266
bookmark99 wrote: post #251

Earlier quoted context omitted.

A friend got this for me, but I'm struggling to put it into any useful purpose, any pointers with things I can experiment it. Using it as a remote seems so cool, esp bc I lost my roku remote not so long ago so if you have any resources that could help I'd appreciate it. The documentation I've seen so far seems far and scattered and it seems people are more scared of being implicit in illegal activities based on their…

For IR remotes, there are a few ways to go about it. If you have a remote you want to clone, you can just use the flipper to clone and map buttons to a custom remote. If you don't have the remote and have a common device (like TVs), I would check this repo on Github [0] and see if you can find a compatible IR file. Note, you need a micro SD card in order to move the files onto the flipper, but a small one works fine.…

Seems like there is at least a bit of interest [1] to convert lirc definitions [2], which is great, because there are so many of them. There even is a definition for my about 30 years old hifi! A really nice hack I saw is to send the code via something that reads lirc and capture it with a flipper in learning mode [3].

[1] https://forum.flipper.net/t/is-possible-to-convert-irplus-fi...

[2] https://lirc.sourceforge.net/remotes/

[3] https://github.com/Lucaslhm/Flipper-IRDB/pull/294

Re: Flipper Zero: Multi-Tool Device for Geeks

#326

Post by crtasm »

rabbitofdeath wrote: post #277

I have found it pretty useful in a few situations: - USB/Mouse keyboard when the iMac you are working on has totally dead batteries for the mouse/keyboard- its not fun but works in a pinch. - Cloning weird ceiling fans/lights. Apparently I've bought horrible remotes but this helped. - Used this as a nightstand clock while traveling. - Used the authenticator app as a backup Yubi key - Mouse jiggler to keep a computer…

> blasting tvs at restaurants is a ton of fun and my kids like that.

You can likely still buy those "every TV" $5 power/volume remotes that fit on a keychain, if they're asking for their own.

Re: Flipper Zero: Multi-Tool Device for Geeks

#328

Post by rabbitofdeath »

tkems wrote: post #281
rabbitofdeath wrote: post #277

I have found it pretty useful in a few situations: - USB/Mouse keyboard when the iMac you are working on has totally dead batteries for the mouse/keyboard- its not fun but works in a pinch. - Cloning weird ceiling fans/lights. Apparently I've bought horrible remotes but this helped. - Used this as a nightstand clock while traveling. - Used the authenticator app as a backup Yubi key - Mouse jiggler to keep a computer…

Just a heads up about the Flippers U2F implementation [0] and the possible weaknesses compared to a Yubikey/other U2F key. [0] https://modusmundi.com/posts/u2f-flipper/

Thank you for this - It is really more of a backup/testing since I leave my Flipper at home 99% of the time and rely on my real Yubi for a few things. Mainly Github which was just because I can.

Re: Flipper Zero: Multi-Tool Device for Geeks

#329

Post by rft »

tzs wrote: post #100
AndrewKemendo wrote: post #57

Earlier quoted context omitted.

All garage doors have rolling keys which are non trivial to deal with unless you have pro stuff.

Speaking of garage door rolling codes I've noticed there is some sort of slack in the synchronization, probably so that if you press the remote button a few times while out of range your remote still opens the door. My guess is that the receiver looks not only for next code after the last one used, but also for several codes after that. Question: how many times would you have to press the button on the remote for it…

Years ago I had some insight into the "crypto" behind a garage door opener. It was essentially a rolling code and the controller stored the counter for each paired remote and checked it. The package sent by the remote also included its current counter value. If the controller received a counter that was higher than expected, it just updated the stored value and accepted the request, assuming the actual "ciphertext" is correct ofc. The only constraint was that the sequence number must be larger than the stored value.

This also means if you manage to clone a remote, you can just abuse humans. If you opened the door with your clone, the next time the original remote sends its package the sequence number will be too low and the controller will ignore it. But what do you do if your remote didn't work? You press it again, this time the sequence number matches and things work as they should.

For cloning you need to reconstruct the initial seed for the PRNG that is used to create the ciphertext based on the sequence number. Based on how little resources these remotes tend to have, more based on cost than battery life etc, and that some vendors design their own crypto, this can actually work. If you know the algorithm and the seed is only 32 bit, you can easily brute force it.

Re: Flipper Zero: Multi-Tool Device for Geeks

#330

Post by python273 »

sev1 wrote: post #324
python273 wrote: post #311

Earlier quoted context omitted.

I'm not sure why you assume malice intentions by default. Using a legal entity in a more convenient country for a startup seems like a common practice, including listing the address of such entity on the website. You'd be surprised how many companies are incorporated in America, pay taxes there, but have founders/employees/contractors elsewhere around the world. So, I personally wouldn't count it as active effort of…

Thanks for your condescending explanation of corporate practices. I'm sure the typical HN reader is completely ignorant to those facts. Perhaps you could also explain Russian corporate practices and ethics to us all. Only you are saying anything about malice. Everything is easily explained by greed (or the desire to simply gain if you prefer softer language).

I mean, I had zero idea about these things at some point, it wasn't condescending in any way. There's lots of different people on HN.

Anyway, seems like you made up your mind and there's zero point debating it with you.

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