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https://github.com/RfidResearchGroup/proxmark3.git
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ed54dc8e17
FIX: 'dumptoemul-mfu.lua' doesn't add the last newline in generated eml file. FIX: 'dumptoemul-mfu.lua' correctly gets the UID from bin file, previously took wrong data.
120 lines
3.1 KiB
Lua
120 lines
3.1 KiB
Lua
-- The getopt-functionality is loaded from pm3/getopt.lua
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-- Have a look there for further details
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getopt = require('getopt')
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bin = require('bin')
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example = "script run dumptoemul-mfu -i dumpdata-foobar.bin"
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author = "Martin Holst Swende \n @Marshmellow \n @iceman"
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usage = "script run dumptoemul-mfu [-i <file>] [-o <file>]"
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desc =[[
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This script takes a dumpfile from 'hf mfu dump' and converts it to a format that can be used
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by the emulator
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Arguments:
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-h This help
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-i <file> Specifies the dump-file (input). If omitted, 'dumpdata.bin' is used
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-o <filename> Specifies the output file. If omitted, <uid>.eml is used.
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]]
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---
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-- A debug printout-function
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function dbg(args)
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if DEBUG then
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print("###", args)
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end
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end
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---
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-- This is only meant to be used when errors occur
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function oops(err)
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print("ERROR: ",err)
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end
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---
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-- Usage help
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function help()
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print(desc)
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print(author)
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print("Example usage")
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print(example)
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end
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local function convert_to_ascii(hexdata)
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if string.len(hexdata) % 8 ~= 0 then
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return oops(("Bad data, length should be a multiple of 8 (was %d)"):format(string.len(hexdata)))
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end
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local js,i = "[";
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for i = 1, string.len(hexdata),8 do
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js = js .."'" ..string.sub(hexdata,i,i+7).."',\n"
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end
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js = js .. "]"
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return js
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end
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local function readdump(infile)
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t = infile:read("*all")
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len = string.len(t)
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local len,hex = bin.unpack(("H%d"):format(len),t)
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return hex
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end
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local function convert_to_emulform(hexdata)
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if string.len(hexdata) % 8 ~= 0 then
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return oops(("Bad data, length should be a multiple of 8 (was %d)"):format(string.len(hexdata)))
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end
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local ascii,i = "";
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for i = 1, string.len(hexdata), 8 do
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ascii = ascii..string.sub(hexdata, i, i+7).."\n"
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end
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return string.sub(ascii, 1, -2)
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end
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local function main(args)
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local input = "dumpdata.bin"
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local output
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for o, a in getopt.getopt(args, 'i:o:h') do
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if o == "h" then return help() end
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if o == "i" then input = a end
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if o == "o" then output = a end
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end
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-- Validate the parameters
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local infile = io.open(input, "rb")
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if infile == nil then
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return oops("Could not read file ", input)
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end
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local dumpdata = readdump(infile)
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-- The hex-data is now in ascii-format,
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-- But first, check the uid
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-- lua uses start index and endindex, not count.
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-- UID is 3three skip bcc0 then 4bytes.
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-- 1 lua is one-index.
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-- 1 + 96 (48*2) new dump format has version/signature/counter data here
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-- 97,98,99,100,101,102 UID first three bytes
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-- 103,104 bcc0
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-- 105--- UID last four bytes
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local uid = string.sub(dumpdata, 97, 97+5)..string.sub(dumpdata, 97+8, 97+8+7)
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output = output or (uid .. ".eml")
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-- Format some linebreaks
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dumpdata = convert_to_emulform(dumpdata)
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local outfile = io.open(output, "w")
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if outfile == nil then
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return oops("Could not write to file ", output)
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end
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outfile:write(dumpdata:lower())
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io.close(outfile)
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print(("Wrote an emulator-dump to the file %s"):format(output))
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end
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--[[
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In the future, we may implement so that scripts are invoked directly
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into a 'main' function, instead of being executed blindly. For future
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compatibility, I have done so, but I invoke my main from here.
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--]]
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main(args)
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