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Flipper Zero: Multi-Tool Device for Geeks

flipperzero.one

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Re: Flipper Zero: Multi-Tool Device for Geeks

#211

Post by ale42 »

CraigJPerry wrote: post #194
tkems wrote: post #84

I got one not too long after the official launch and I've used it a decent amount (granted I am in cybersecurity and have a more real-world use cases then the average person). My favorite use case is the IR remote since phones no longer have IR blasters. It's saved me twice so far in having to buy/find a remote for something. One thing people don't realize is that the custom firmware [0] that you can run allows you t…

>> or somewhat expensive and complex SDR I don’t think that’s as accurate today as it used to be. On the hardware side there are tons of options very cheaply available - iirc the flipper uses the c1100 (or a number like that) it’s a popular cheap chip and it’s well documented and interfaces easily with arduino. More accessibly, lime mini SDRs are cheap but there’s quite a few alternatives too. On the software side GN…

GNU radio is free, but what about the hardware you need if you want to transmit an actual signal?

Re: Flipper Zero: Multi-Tool Device for Geeks

#212

Post by abcd_f »

Eji1700 wrote: post #161
ec109685 wrote: post #115

Earlier quoted context omitted.

If you have control of the opener, couldn’t you use the door’s learning mode and make it into a real opener?

I thought so at first by my initial reading left me somewhat confused on if there's a private key that only certain remotes have or something like that?

It's less of a private key and more a random per-remote prng seed that gets set both on the remote and the door controller when they are paired. When you press the button, remote increments its sequence number and send this number, its ID and a hash of all that and the seed to the controller. Controller checks the hash, then checks that seq number is more than last seen for this remote and opens the door. This protects against replay attacks and fairly uncomplicated to implement.

Re: Flipper Zero: Multi-Tool Device for Geeks

#213

Post by rekoil »

gleenn wrote: post #7
roughly wrote: post #2

I’ve had one of these guys sitting around for a while - love the hardware, love the concept, but I haven’t really found a lot of use for it - what are y’all using them for?

My friend found out the school he sysadmins for was using weak rfid card keys (despite the readers being smart enough to handle higher level encryption) and found he could clone his key and get in places. So basically he pen tested and then they decided to upgrade to the less or non-cloneable card keys. Security for the win.

Quite often the keycards have sequential IDs which means you can increase or decrease the number a few times and find a colleagues card with higher or lower privileges than you.

Re: Flipper Zero: Multi-Tool Device for Geeks

#214

Post by elliottcarlson »

tkems wrote: post #84

I got one not too long after the official launch and I've used it a decent amount (granted I am in cybersecurity and have a more real-world use cases then the average person). My favorite use case is the IR remote since phones no longer have IR blasters. It's saved me twice so far in having to buy/find a remote for something. One thing people don't realize is that the custom firmware [0] that you can run allows you t…

The batteries died in my bedroom TV remote a few nights ago, it wasn't until I went to replace them did I notice that one of the batteries had leaked and seems to have caused some corrosion on the contact, so until I clean it up I've switched to my Flipper Zero as the remote for it (just need power and audio control, rest is via a Roku stick). Never thought this would be my use case for it, but it worked out perfectly.

Re: Flipper Zero: Multi-Tool Device for Geeks

#215

Post by tiagod »

ale42 wrote: post #211
CraigJPerry wrote: post #194

Earlier quoted context omitted.

>> or somewhat expensive and complex SDR I don’t think that’s as accurate today as it used to be. On the hardware side there are tons of options very cheaply available - iirc the flipper uses the c1100 (or a number like that) it’s a popular cheap chip and it’s well documented and interfaces easily with arduino. More accessibly, lime mini SDRs are cheap but there’s quite a few alternatives too. On the software side GN…

GNU radio is free, but what about the hardware you need if you want to transmit an actual signal?

An HackRF clone is quite a bit cheaper than a Flipper, and it's a full-blown SDR with TX capability

Re: Flipper Zero: Multi-Tool Device for Geeks

#216

Post by elliottcarlson »

filoleg wrote: post #157
j0hnyl wrote: post #140

Earlier quoted context omitted.

Is this really the case? I would think there would be a mobile app interface for flipper?

You are correct, there is a mobile app interface for it. You can check firmware version and device status, update it, have access to file manager, can backup keys, read logs, reboot, speed/stress test, and probably do a lot of other things that I am not aware about.

Any app run on the Flipper Zero can be run and interfaced with from the mobile app. It works quite well.

Re: Flipper Zero: Multi-Tool Device for Geeks

#217

Post by regularfry »

jefftk wrote: post #134
spookie wrote: post #88

Earlier quoted context omitted.

The point of the flipper zero is to have one good supported gadget that has a lot of people hacking away with it. It's the same thing with the raspberry pi, sure you can get some cheap clone off less than ideal places, but you're gonna pay with your time. That's basically it.

> It's the same thing with the raspberry pi, sure you can get some cheap clone... It's a little different: from when the rPI first came out the price was a big driver of it's popularity. It started with the Model B at $35 (with the Model A at $25 "later this year") and this was so much cheaper than other options at the time. Look over threads from the time [1][2] and you'll see things like: "I teach middle school pro…

Allowing for inflation they've stayed in roughly the same ballpark, price-wise. It's just that there are now also cheaper boards available, which used not to be the case.

Re: Flipper Zero: Multi-Tool Device for Geeks

#218

Post by sharperguy »

dzink wrote: post #120

The initial marketing mentioned that flippers can exchange collected data as a social interaction. The reason I haven’t bought it is that I don’t want private stuff used and home being leaked to flippers nearby or to a central server. Any experience with that?

Everything is recorded on an SD card, so you could copy the files online somewhere and download others files. There is no automatic sharing.

Re: Flipper Zero: Multi-Tool Device for Geeks

#219

Post by omnimus »

Scoundreller wrote: post #93
spookie wrote: post #88

Earlier quoted context omitted.

The point of the flipper zero is to have one good supported gadget that has a lot of people hacking away with it. It's the same thing with the raspberry pi, sure you can get some cheap clone off less than ideal places, but you're gonna pay with your time. That's basically it.

That's what I like about InstantPots: having a standardized cooking device makes recipes a lot easier to share.

Arent most things in a kitchen standardized cooking device? Like stainless pan is stainless pan…

Re: Flipper Zero: Multi-Tool Device for Geeks

#220

Post by 1oooqooq »

baobun wrote: post #183
1oooqooq wrote: post #171

Earlier quoted context omitted.

no phone can act as a nfc card. your set up doesn't cover the main use case for the flipper on nfc space

Many (most recent) smartphone models can act as NFC cards very well, with the right software.

That is kinda misleading. They can act as a very limited version of a client of a very specific and largely unused spec.
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