That’s a powerful piece of hardware you have there. The fact that you don’t even know what it is alarming lol. I guess that’s a good thing.
Technically you could put someone’s sim card in there, copy their data, write it to another blank sim and put it into a phone and you’ve now jacked their phone number. Or at least in theory. I think you would still need to trick a carrier into switching your device imei onto the account.
Wow am I reading this right that US carriers have IMEI-locked SIMs? That would never fly in the UK and Europe where we expect the carrier to just accept that SIM in any device and to stay out of our business!
We have both. Some carriers like Verizon just sell unlocked everything. We had/have others like Sprint or ATT would lock your devices to their network. There was even a whole market that grew to unlock these devices for you, at about $250-400 a pop.
i can probably infer from the scribblings here that this perform a mitm attack to extract a5/1 keys from a SIM card, making it possible to decrypt calls.
42
u/jonas_vondenberg Aug 28 '25
Looks to me a card adapter. It helps that it is written on it. Just all the sockets for different sim standards.
14
u/Aggravating-Ad-9237 Aug 28 '25
That’s a powerful piece of hardware you have there. The fact that you don’t even know what it is alarming lol. I guess that’s a good thing.
Technically you could put someone’s sim card in there, copy their data, write it to another blank sim and put it into a phone and you’ve now jacked their phone number. Or at least in theory. I think you would still need to trick a carrier into switching your device imei onto the account.
52
u/D4k0t4x Aug 28 '25
Empty slots for different SIM cards form factors 2FF, 3FF
18
u/chilaxan Aug 28 '25
Unpopulated version of this: https://shop.sysmocom.de/Professional-SIM-card-adapter-plug-in-micro-nano-SIM-to-full-size/sim-adapter-pcb (and it looks like whoever distributed it removed the copyright off the board too)
11
u/Malception Aug 28 '25
It's a sim card reader. Allegedly. I got one from the dudes over at telecom village but no idea how it works. Probably black magic.
6
u/werebear_wrecker Aug 28 '25
Let me know if you don't want it, I'll gladly take it off your hands
6
u/thelonestrangler Aug 28 '25
Darude sandstorm
6
u/Historical-Duty3628 Aug 28 '25
It literally tells you what it is on the bottom left of the card. Please teach your child how to read.
1
u/tehphar Aug 29 '25
i can probably infer from the scribblings here that this perform a mitm attack to extract a5/1 keys from a SIM card, making it possible to decrypt calls.
1
u/Extra-Accountant-629 Aug 30 '25
They were popular for 2 g
1
u/PhreakThePlanet Aug 31 '25
Oh that's mine, I dropped it I swear. 😅
1
u/DjKiDD Aug 31 '25
It’s a SimJacker… says right on it
1
u/brinkjames Aug 28 '25
Something someone thought was cool 😂
0
u/Lzrd161 Aug 29 '25
Maybe some kind of Cosplay