ntag_getsig: Introduce ntag_getsig

This commit is contained in:
Ave 2021-02-28 12:55:33 +03:00
parent 7f87b2dfa7
commit 278ba103ce
3 changed files with 106 additions and 0 deletions

1
.gitignore vendored
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@ -33,6 +33,7 @@ version.c
*.json.bak
*.pyc
*.bmp
originalitysig.csv
# new build file for add-ons.
Makefile.platform

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@ -3,6 +3,7 @@ All notable changes to this project will be documented in this file.
This project uses the changelog in accordance with [keepchangelog](http://keepachangelog.com/). Please use this to write notable changes, which is not the same as git commit log...
## [unreleased][unreleased]
- Added a script to dump originality signatures from MFU EV1s and NTAGs (@aveao)
- Added parsing of EF_CardAccess to display PACE algorithm, version and parameter in `hf emrtd info` (@aveao)
- Change, numerous commands more uses cliparser (@tcprst, @iceman1001)
- Added more originality public keys (@anon)

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@ -0,0 +1,104 @@
local getopt = require('getopt')
local lib14a = require('read14a')
local cmds = require('commands')
local ansicolors = require('ansicolors')
copyright = 'Copyright 2021 A. Ozkal, released under GPLv2+.'
author = 'Ave'
version = 'v1.0.0'
desc = [[
This script attempts to grab signatures from an NTAG or MFULEV1 card and print it in a machine parsable way
]]
example = [[
script run ntag_getsig
]]
usage = [[
script run ntag_getsig [-h]
]]
arguments = [[
-h : This help
]]
local function help()
print(author)
print(version)
print(desc)
print(ansicolors.cyan..'Usage'..ansicolors.reset)
print(usage)
print(ansicolors.cyan..'Arguments'..ansicolors.reset)
print(arguments)
print(ansicolors.cyan..'Example usage'..ansicolors.reset)
print(example)
end
-- Used to send raw data to the firmware to subsequently forward the data to the card.
-- from mifareplus.lua
local function sendRaw(rawdata, crc, power)
-- print(("<sent>: %s"):format(rawdata))
local flags = lib14a.ISO14A_COMMAND.ISO14A_RAW
if crc then
flags = flags + lib14a.ISO14A_COMMAND.ISO14A_APPEND_CRC
end
if power then
flags = flags + lib14a.ISO14A_COMMAND.ISO14A_NO_DISCONNECT
end
local command = Command:newMIX{cmd = cmds.CMD_HF_ISO14443A_READER,
arg1 = flags, -- Send raw
arg2 = string.len(rawdata) / 2, -- arg2 contains the length, which is half the length of the ASCII-string rawdata
data = rawdata
}
local ignore_response = false
local result, err = command:sendMIX(ignore_response)
if result then
--unpack the first 4 parts of the result as longs, and the last as an extremely long string to later be cut down based on arg1, the number of bytes returned
local count,cmd,arg1,arg2,arg3,data = bin.unpack('LLLLH512',result)
returned_bytes = string.sub(data, 1, arg1 * 2)
if #returned_bytes > 0 then
-- print(("<recvd>: %s"):format(returned_bytes)) -- need to multiply by 2 because the hex digits are actually two bytes when they are strings
return returned_bytes
else
return nil
end
else
print("Error sending the card raw data.")
return nil
end
end
---
-- The main entry point
function main(args)
-- Read the parameters
for o, a in getopt.getopt(args, 'h') do
if o == 'h' then return help() end
end
local tag, err = lib14a.read(true, false)
if not err then
local sig = sendRaw("3C00", true, true)
local ver = sendRaw("60", true, false)
if sig and ver then -- if false, that's a fail right there
sig = string.sub(sig, 0, -5)
ver = string.sub(ver, 0, -5)
local text = tag.name..","..ver..","..tag.uid..","..sig
print(text)
local filename = "originalitysig.csv"
local outfile = io.open(filename, "a")
if outfile ~= nil then
outfile:write(text.."\n")
io.close(outfile)
else
print(ansicolors.red.."Couldn't open file originalitysig.csv."..ansicolors.reset)
end
else
print(ansicolors.red.."Read FAILED."..ansicolors.reset)
end
end
end
main(args)