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https://github.com/RfidResearchGroup/proxmark3.git
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a5898158c5
ADD: utils got iso15693 crc support
196 lines
5.8 KiB
Lua
196 lines
5.8 KiB
Lua
--[[
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This is a library to read 15693 tags. It can be used something like this
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local reader = require('read15')
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result, err = reader.read15693()
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if not result then
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print(err)
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return
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end
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print(result.name)
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--]]
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-- Loads the commands-library
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local cmds = require('commands')
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local utils = require('utils')
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local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds
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--- Sends a USBpacket to the device
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-- @param command - the usb packet to send
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-- @param ignoreresponse - if set to true, we don't read the device answer packet
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-- which is usually recipe for fail. If not sent, the host will wait 2s for a
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-- response of type CMD_ACK
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-- @return packet,nil if successfull
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-- nil, errormessage if unsuccessfull
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local function sendToDevice(command, ignoreresponse)
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local err = core.SendCommand(command:getBytes())
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if err then
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print(err)
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return nil, err
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end
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if ignoreresponse then return nil,nil end
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local response = core.WaitForResponseTimeout(cmds.CMD_ACK, TIMEOUT)
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return response,nil
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end
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local function errorString15693(number)
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local errors = {}
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errors[0x01] = "The command is not supported"
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errors[0x02] = "The command is not recognised"
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errors[0x03] = "The option is not supported."
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errors[0x0f] = "Unknown error."
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errors[0x10] = "The specified block is not available (doesn’t exist)."
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errors[0x11] = "The specified block is already -locked and thus cannot be locked again"
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errors[0x12] = "The specified block is locked and its content cannot be changed."
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errors[0x13] = "The specified block was not successfully programmed."
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errors[0x14] = "The specified block was not successfully locked."
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return errors[number] or "Reserved for Future Use or Custom command error."
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end
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local function parse15693(data)
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-- From common/iso15693tools.h :
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--[[
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#define ISO15_CRC_CHECK ((uint16_t)(~0xF0B8 & 0xFFFF)) // use this for checking of a correct crc
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--]]
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-- But that is very strange. Basically what is says is:
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-- define ISO15_CRC_CHECK 0F47
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-- So we can just use that directly...
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-- The following code is based on cmdhf15.c around line 666 (NoTB!) and onwards
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if core.iso15693_crc(data, string.len(data)) ~= 0xF47 then
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return nil, "CRC failed"
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elseif data[1] % 2 == 1 then
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-- Above is a poor-mans bit check:
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-- recv[0] & ISO15_RES_ERROR //(0x01)
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local err = "Tag returned error %i: %s"
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err = string.format(err, data[1], errorString15693(data[1]))
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return nil, err
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end
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-- Finally, let the parsing begin...
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-- the UID is just the data in reverse... almost:
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-- 0FC481FF70000104E001001B0301
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-- 8877665544332211
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-- UID = E004010070FF81C4
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-- 1122334455667788
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-- So, cut out the relevant part and reverse it
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-- byte wise reverse.. not string reverse..
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local uid = data:sub(2,9):reverse()
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local uidStr = bin.unpack("H8", uid)
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local _, manufacturer_code = bin.unpack("s", uid:sub(2,2))
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local _, tag_size = bin.unpack(">I", data:sub(12,13))
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local _, micref_modelcode = bin.unpack("s", data:sub(14,14))
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return {
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uid = uidStr,
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manufacturer_code = manufacturer_code,
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tag_size = tag_size,
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micref_modelcode = micref_modelcode,
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}
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end
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-- This function does a connect and retrieves som einfo
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-- @param dont_disconnect - if true, does not disable the field
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-- @return if successfull: an table containing card info
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-- @return if unsuccessfull : nil, error
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local function read15693(slow, dont_readresponse)
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--[[
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We start by trying this command:
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proxmark3> hf 15 cmd sysinfo -2 u
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0F C4 81 FF 70 00 01 04 E0 01 00 1B 03 01
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UID = E004010070FF81C4
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Philips; IC SL2 ICS20
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DSFID supported, set to 01
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AFI supported, set to 000
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Tag provides info on memory layout (vendor dependent)
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4 (or 3) bytes/page x 28 pages
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IC reference given: 01
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This command is not always present in ISO15693 tags (it is an optional standard command) but if it is present usually the tags contain all the "colored" info above.
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If the above command doesn't give an answer (see example below):
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proxmark3> hf 15 cmd sysinfo -2 u
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timeout: no
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we must send the MANDATORY (present in ALL iso15693 tags) command (the example below is sent to a tag different from the above one):
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proxmark3> hf 15 cmd inquiry
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UID=E007C1A257394244
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Tag Info: Texas Instrument; Tag-it HF-I Standard; 8x32bit
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proxmark3>
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From which we obtain less information than the above one.
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--]]
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local command, result, info, err, data
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data = "260100"
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--add crc
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local payload = utils.Crc15(data)
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command = Command:new{cmd = cmds.CMD_ISO_15693_COMMAND,
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arg1 = string.len(payload) / 2,
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arg2 = 1,
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arg3 = 1,
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data = payload}
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-- These are defined in common/iso15693tools.h
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-- #define ISO15_REQ_SUBCARRIER_SINGLE 0x00 // Tag should respond using one subcarrier (ASK)
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-- #define ISO15_REQ_DATARATE_HIGH 0x02 // Tag should respond using high data rate
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-- #define ISO15_REQ_NONINVENTORY 0x00
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if slow then
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command.arg2 = 0
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end
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if dont_readresponse then
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command.arg3 = 0
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end
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local result, err = sendToDevice(command, dont_readresponse)
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if not result then
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print(err)
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return nil, "15693 sysinfo: no answer"
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end
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local count, cmd, recvlen, arg1, arg2 = bin.unpack('LLLL',result)
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data = string.sub(result, recvlen)
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info, err = parse15693(data)
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if err then
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print(err)
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return nil, err
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end
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return info
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end
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---
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-- Waits for a mifare card to be placed within the vicinity of the reader.
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-- @return if successfull: an table containing card info
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-- @return if unsuccessfull : nil, error
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local function waitFor15693()
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print("Waiting for card... press any key to quit")
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while not core.ukbhit() do
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res, err = read15693()
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if res then return res end
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-- err means that there was no response from card
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end
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return nil, "Aborted by user"
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end
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local library = {
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read = read15693,
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waitFor15693 = waitFor15693,
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parse15693 = parse15693,
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sendToDevice = sendToDevice,
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}
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return library
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