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Is there any progrss ? #4

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michalss opened this issue Aug 1, 2023 · 20 comments
Open

Is there any progrss ? #4

michalss opened this issue Aug 1, 2023 · 20 comments

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@michalss
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michalss commented Aug 1, 2023

Hi,

Is there any progress please ? I would love to get it workig...

Regards
@phranck
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phranck commented Sep 15, 2023

Yeah, would like to see any progress, too. Reading and writing custom RFID tags would be really awesome.

@mplacona
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mplacona commented Oct 2, 2023

Would love to know this too! Can't wait to have RFID tags on all my spools

@warbarz
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warbarz commented Oct 6, 2023

Hello all!
The rfid tag included with spool also maintains spool consumption. Figuring out the decoding will be essential in reuse of tags on various spools of varying consumption.
New refills include tags as well for replacing the old tags. This will be instrumental in use of 3rd party or self printed spools.
What we are doing here will develop into a tool to easily choose type, color, and spool weight remaining to generate a file to write to the rfid tags for detection.
Also suggesting potentially adhearing the tag to the exterior of the spool to ensure read-ability and make writing the tag easier.

I have gathered all the following:

Spools sold by Bambu on their site including their hex identifier posted. That is type, color, and hex code.
I have purchased one or more of each spool as well as a number of refills to compare data against.
I have a proxmark and prepared the environment to begin reading the tags, and intercepting communication with reader.

I am in need of assistance with the following:

Decoding the crc and keys from the dumps of the rfids.
Creating a application to generate dumps to write to the tags based on the progress of the above decoding.
Potentially a ams system that is for parts to harvest the rfid reader and cabling to make reading and intercepting communication between it and spools rfids easier. (If someone has one they have scrapped let me know so we can get the circuit board and rfid reader from it.)

Let me know if anyone has anything to add to the above or if we should start a discord group to more proactively (and privately) communicate on progress.

@michalss
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michalss commented Oct 9, 2023

I do have Proxmark3 and ASM, but most valuable thing is that im developer i can do mobile, desktop applications (Maui c#, flutter, c++, java), also can do webs(Js,Blazor, React, Svelte)... Let me know how can i help.. There is also possibility to established the annonym server to host this data, ot at least api for Desktop application....

@tiagojanz
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Hi, I can have a try at the CRC cause I have a lot of experience with it, if you post a complete hex output I can try reverse engineer it.

@warbarz
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warbarz commented Oct 10, 2023 via email

@tiagojanz
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yes, search for tiagojanz

@warbarz
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warbarz commented Oct 12, 2023 via email

@doudar
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doudar commented Oct 19, 2023

What about dumping the firmware from the AMS? Possibly that would shed light on the decryption process?

@warbarz
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warbarz commented Oct 19, 2023 via email

@redosk
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redosk commented Oct 21, 2023

yes, search for tiagojanz

Hi, I've added you also on Discord, I'm interested to join in.
Maybe we should make a server to discuss altogether ?

--

Regarding spool consumption, it is not written on the tag ? Consumption is kept on the AMS, I suppose, right ?

@michalss
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yes, search for tiagojanz

also add your to discord...

@kolodus
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kolodus commented Oct 24, 2023

did the discord happen? interested in what others have learned and happy to lend a hand w/ a logic analyzer or scope if useful, or hunt down uart/jtag/spi if i can source a parts only ams

@raleighlittles
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Has anyone started working on an automated key retrieval process? Specifically this part from the documentation: https://github.com/Bambu-Research-Group/RFID-Tag-Guide#getting-the-other-keys-by-analyzing-the-log-file

@warbarz ?

@warbarz
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warbarz commented Nov 3, 2023 via email

@redosk
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redosk commented Nov 3, 2023

Has anyone started working on an automated key retrieval process? Specifically this part from the documentation: https://github.com/Bambu-Research-Group/RFID-Tag-Guide#getting-the-other-keys-by-analyzing-the-log-file

@warbarz ?

I've made some scripts.

Also, I just created a Discord server, it will perhaps be easier to discuss this : https://discord.gg/K7eqWwUs

@michalss
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Discord invite is not valid anymore :(

Has anyone started working on an automated key retrieval process? Specifically this part from the documentation: https://github.com/Bambu-Research-Group/RFID-Tag-Guide#getting-the-other-keys-by-analyzing-the-log-file
@warbarz ?

I've made some scripts.

Also, I just created a Discord server, it will perhaps be easier to discuss this : https://discord.gg/K7eqWwUs

Discord invite is not valid anymore :(

@warbarz
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warbarz commented Nov 16, 2023 via email

@pelrun
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pelrun commented Dec 2, 2023

Invite link has expired again (Discord why u do this?)

@duracell
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duracell commented Dec 2, 2023

Invite link has expired again (Discord why u do this?)

This one shouldn't be expire:
https://discord.gg/zVfCVubwr7

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