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141 lines
4.9 KiB
Markdown
141 lines
4.9 KiB
Markdown
# EMV commands
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<a id="top"></a>
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### EMV Implemented parts:
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- Get ATR|ATS
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- Get AID by PSE (`emv pse`)
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- Get AID by appliation list (`emv search`)
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- Select application (`emv select`)
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- Format PDOL (look at next part)
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- Execute GPO (`emv gpo` this step and format PDOL)
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- Get records from AFL (`emv readrec`)
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- Make SDA (check records from GPO)
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- Make DDA (`emv challenge` `emv intauth`)
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- Check PIN (`not implemented`)
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- Fill CDOL1 and CDOL2 (look at next part)
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- Execute AC1 (with CDA support) (`emv genac`)
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- Check ARQC (bank part) (`not implemented`)
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- Make ARPC (bank part) (`not implemented`)
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- Execute external authenticate (`not implemented`)
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- Execute AC2 (with CDA support) (`not implemented`)
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- Check ARQC cryptogram (`not implemented`)
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- Issuer scripts processing (`not implemented`)
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### Working parts of qVSDC:
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^[Top](#top)
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- Get ATR|ATS
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- Get AID by PSE (`emv pse`)
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- Get AID by appliation list (`emv search`)
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- Select application (`emv select`)
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- Format PDOL (look at next part)
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- Execute GPO (`emv gpo` this step and format PDOL)
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- Get records from AFL (`emv readrec`)
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- Make fDDA (`emv challenge` `emv intauth`)
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- External authenticate command (`not implemented`)
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- Issuer scripts processing (`not implemented`)
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### `not implemented` parts of EMV
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^[Top](#top)
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They can be implemented, but it needs to know issuer's card keys (usually 3DES) and now this parts can be tested only on special test cards.
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### Commands
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^[Top](#top)
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All this commands are parts of command `emv exec`.
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command `emv exec` executes EMV transaction. it have parameters:
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```
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-j, -J, --jload Load transaction parameters from `emv/defparams.json` file.
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-f, -F, --forceaid Force search AID. Search AID instead of execute PPSE.
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By default: Transaction type - MSD
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-v, -V, --qvsdc Transaction type - qVSDC or M/Chip.
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-c, -C, --qvsdccda Transaction type - qVSDC or M/Chip plus CDA (SDAD generation).
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-x, -X, --vsdc Transaction type - VSDC.
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-g, -G, --acgpo VISA. generate AC from GPO.
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-w, -W, --wired Send data via contact (iso7816) interface. Contactless interface set by default.
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```
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It works for VISA(r) and Mastercard(r) transactions. It may work with other EMV payment system's card (and it works in general cases that is described in EMV).
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### VISA(r) transactions:
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^[Top](#top)
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MSD - Magnetic Stripe mode
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VSDC - contact transacion
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qVSDC - contactless transaction
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### Mastercard(r) transactions
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^[Top](#top)
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MSD - Magnetic Stripe mode
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M/Chip - contact and contactless transaction
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Different cards have different modes on/of and different behavior in them. So needs to check card in all this modes.
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MSD - compatibility mode. Now it work always. But it less secure and in near future it will be slowly) disabled.
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### all commands:
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^[Top](#top)
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```
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exec Executes EMV contactless transaction.
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pse Execute PPSE. It selects 2PAY.SYS.DDF01 or 1PAY.SYS.DDF01 directory.
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search Try to select all applets from applets list and print installed applets.
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select Select applet.
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gpo Execute GetProcessingOptions.
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readrec Read files from card.
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genac Generate ApplicationCryptogram.
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challenge Generate challenge.
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intauth Internal authentication.
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scan Scan EMV card and save it contents to json file for emulator.
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test Crypto logic test.
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list List ISO7816 history
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roca Extract public keys and run ROCA test
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```
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All main commands are parts of EMV specification. Commands than not described there:
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`emv scan` - scans card and saves all records to json file. Can be executed with or without tags disassembly.
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`emv roca` - extract public keys from cards (part of `emv scan`)
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`emv test` - test all crypto code from emv part of proxmark.
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### Useful links:
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^[Top](#top)
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EMV specifications
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http://www.emvco.com/specifications.aspx?id=155
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Excelent explanation of EMV
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http://www.openscdp.org/scripts/emv/index.html
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Fully working terminal written in Ruby.
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https://code.google.com/p/ruby-pboc2-lib/source/browse/trunk/lib/pboc.rb
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EMV kernel written in C++
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https://github.com/ntufar/EMV/tree/master/EMV_Library
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C EMV library (part of this library uses proxmark)
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https://github.com/lumag/emv-tools
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Resources (keys, country codes, etc):
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https://github.com/binaryfoo/emv-bertlv/tree/master/src/main/resources
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### EMV kernels
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^[Top](#top)
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POS terminal checks card and selects one of EMV kernels and launches it for EMV transaction. Different kernels have different rules to make EMV transaction.
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This list from:
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EMVco Architecture and General Requirement V2.4 volume A.
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EMVco Entry Point specification V2.4 volume B
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- EMVco C-1 Kernel 1 V2.4 for some cards with JCB AIDs and some cards with Visa AIDs
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- EMVco C-2 Kernel 2 V2.4 for MasterCards AIDs
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- EMVco C-3 Kernel 3 V2.4 for Visa AIDs
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- EMVco C-4 Kernel 4 V2.4 for American Express AIDs
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- EMVco C-5 Kernel 5 V2.4 for JCB AIDs
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- EMVco C-6 Kernel 6 V2.4 for Discover AIDs
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- EMVco C-7 Kernel 7 V2.4 for UnionPay AIDs
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