[MFC] Legacy (pre-2018) SEGA Aime/BNEI BanaPassport

[dogtopus]

There's a lot of cards in the world, and asking for a card by name isn't good enough to get it supported.

We do not record expressions of interest here.

Please read https://github.com/metrodroid/metrodroid/wiki/New-cards before continuing.

Description

This is not a transit card. It is used on SEGA/Namco arcade systems as a way to authenticate the player account. The format is extremely simple and straightforward and no account-specific info is written to the card after it's out of factory.

Card format

Everything below is big endian.

Sector 0, block 1

Offset	Type	Name	Notes
0	u8[4]	magic	Always 0x53425344 (ASCII "SBSD")
4	u8[8]	sbz4	Unused. Should be 0
12	u32	unk_serial	Unknown. Maybe some serial number

Sector 0, block 2

Offset	Type	Name	Notes
0	u8[6]	sbz0	Unused. Should be 0
6	u8[10]	access_code_bcd	Binary coded decimal (BCD) representation of the access code physically printed on card

Other sectors are blank.

New card checklist

• I have read and acknowledged the New cards wiki page.
• I can provide dumps, transaction history, and balance records for more than one card from the operator.
• I have attempted to understand the card format on my own.
• I have provided notes on what I've found so far.

Please answer all questions listed here:

• Name of the card: Aime/BanaPassport
• Name of the transit agency: SEGA/BNEI
• Transit agency's website: https://web.archive.org/web/20170606212409/https://my-aime.net/aime/jp/p/info/about.html
• Location(s): Japan/Worldwide
• Card media: MIFARE Classic

Is there any publicly accessible documentation for this card format? If so, provide links:

See above.

Is the card similar to one we already support?

No.

Is there an official app for using the card?

No.

How many sectors does this card have?

Did the card use any "default" key that comes with Metrodroid?

No.

Does the card use diversified keys, static keys, or a combination?

Static keys.

After installing proper keys, how many sectors could you read with Metrodroid (ie: not "unauthorized")?

5 (I forgot which keys are needed for sector 5-15, although I believe they are blank anyway. More details TBA. sector 5-15 are "permanently" locked with the access condition set to never.)

With the data that you can read from the card, does it change after performing a transaction?

No.