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#1 2024-01-04 14:16:02

wdywmz
Contributor
Registered: 2021-01-18
Posts: 20

about GDMIC write card with B password

block 63 data : E416FFF9F3310F00FF699F98FF1D62D9
[=] key A........ E416FFF9F331
[=] acr.......... 0F00FF
[=] user / gpb... 69
[=] key B........ 9F98FF1D62D9
=====================================================

[usb] pm3 -->hf mf wrbl --blk 63 -b -k 9F98FF1D62D9 -d E416FFF9F331FF0780699F98FF1D62D9
[=] Sector trailer (ST) write detected
[+] ST passed checks, continuing...
[=] Writing block no 63, key B - 9F98FF1D62D9
[=] data: E4 16 FF F9 F3 31 FF 07 80 69 9F 98 FF 1D 62 D9 
[+] Write ( ok )

[usb] pm3 -->hf mf gdmsetblk -b -k 9F98FF1D62D9 --blk 63 -d E416FFF9F331FF0780699F98FF1D62D9
[=] Sector trailer (ST) write detected
[+] ST passed checks, continuing...
[=] Writing block no 63, key B - 9F98FF1D62D9
[=] data: FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF 
[?] Maybe access rights? Try specify keytype `hf mf gdmsetblk -a ...` instead

=====================================================
GDM card, write card with B password, command invalid.

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#2 2024-01-04 14:22:06

wdywmz
Contributor
Registered: 2021-01-18
Posts: 20

Re: about GDMIC write card with B password

  [ Proxmark3 RFID instrument ]

    MCU....... AT91SAM7S512 Rev B
    Memory.... 512 KB ( 61% used )

    Client.... Iceman/master/v4.17768-6-gbc2a906d3 2024-01-04 10:53:43
    Bootrom... Iceman/master/v4.17768-6-gbc2a906d3-suspect 2024-01-04 10:53:19
    OS........ Iceman/master/v4.17768-6-gbc2a906d3-suspect 2024-01-04 10:53:31
    Target.... PM3 GENERIC


[=] No previous history could be loaded
[usb] pm3 --> hf mf gdmsetblk -k 9F98FF1D62D9 --blk 63 -d E416FFF9F331FF0780699F98FF1D62D9
[=] Sector trailer (ST) write detected
[+] ST passed checks, continuing...
[=] Writing block no 63, key 9F98FF1D62D9
[=] data: E4 16 FF F9 F3 31 FF 07 80 69 9F 98 FF 1D 62 D9
[#] Auth error
[-] Write ( fail )
[usb] pm3 --> hf mf gdmsetblk -k 9F98FF1D62D9 --blk 63 -d E416FFF9F331FF0780699F98FF1D62D9 --force
[=] Sector trailer (ST) write detected
[+] ST passed checks, continuing...
[=] Writing block no 63, key 9F98FF1D62D9
[=] data: E4 16 FF F9 F3 31 FF 07 80 69 9F 98 FF 1D 62 D9
[#] Auth error
[-] Write ( fail )

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#3 2024-01-04 16:53:11

fazer
Contributor
Registered: 2019-03-02
Posts: 141

Re: about GDMIC write card with B password

Good evening, you want to write the blk 63 in a magic gen4 card, have you tried gload I don't know this type of gen4 card, otherwise also lift the antenna card a few millimeters to try.

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