X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/22f1c57786097d373e6d4706588b5d9e9a09e8e5..b22f7a6bc68319533f9c83c24045d4bd79994f1f:/client/scripts/tnp3.lua diff --git a/client/scripts/tnp3.lua b/client/scripts/tnp3.lua index 56d0b486..77de766f 100644 --- a/client/scripts/tnp3.lua +++ b/client/scripts/tnp3.lua @@ -4,6 +4,7 @@ local bin = require('bin') local lib14a = require('read14a') local utils = require('utils') local md5 = require('md5') +local dumplib = require('html_dumplib') local toyNames = require('default_toys') example =[[ @@ -11,9 +12,12 @@ example =[[ 2. script run tnp3 -n 3. script run tnp3 -k aabbccddeeff 4. script run tnp3 -k aabbccddeeff -n + 5. script run tnp3 -o myfile + 6. script run tnp3 -n -o myfile + 7. script run tnp3 -k aabbccddeeff -n -o myfile ]] author = "Iceman" -usage = "script run tnp3 -k -n" +usage = "script run tnp3 -k -n -o " desc =[[ This script will try to dump the contents of a Mifare TNP3xxx card. It will need a valid KeyA in order to find the other keys and decode the card. @@ -21,14 +25,13 @@ Arguments: -h : this help -k : Sector 0 Key A. -n : Use the nested cmd to find all keys + -o : filename for the saved dumps ]] --- AES konstant? LEN 0x24 36, --- I dekompilen är det för internal static array = 0x36 54 -local hashconstant = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20' +local HASHCONSTANT = '20436F707972696768742028432920323031302041637469766973696F6E2E20416C6C205269676874732052657365727665642E20' local TIMEOUT = 2000 -- Shouldn't take longer than 2 seconds -local DEBUG = true -- the debug flag +local DEBUG = false -- the debug flag local numBlocks = 64 local numSectors = 16 --- @@ -90,11 +93,20 @@ local function waitCmd() return nil, "No response from device" end +local function computeCrc16(s) + local hash = core.crc16(utils.ConvertHexToAscii(s)) + return hash +end + +local function reverseCrcBytes(crc) + crc2 = crc:sub(3,4)..crc:sub(1,2) + return tonumber(crc2,16) +end + local function main(args) print( string.rep('--',20) ) - --print( string.rep('--',20) ) - --print() + print( string.rep('--',20) ) local keyA local cmd @@ -102,12 +114,14 @@ local function main(args) local useNested = false local cmdReadBlockString = 'hf mf rdbl %d A %s' local input = "dumpkeys.bin" - + local outputTemplate = os.date("toydump_%Y-%m-%d_%H%M%S"); + -- Arguments for the script - for o, a in getopt.getopt(args, 'hk:n') do + for o, a in getopt.getopt(args, 'hk:no:') do if o == "h" then return help() end if o == "k" then keyA = a end if o == "n" then useNested = true end + if o == "o" then outputTemplate = a end end -- validate input args. @@ -130,26 +144,27 @@ local function main(args) if 0x01 ~= result.sak then -- NXP MIFARE TNP3xxx return oops('This is not a TNP3xxx tag. aborting.') end - + + -- Show tag info print((' Found tag : %s'):format(result.name)) - - -- Show info print(('Using keyA : %s'):format(keyA)) - print( string.rep('--',20) ) --Trying to find the other keys if useNested then core.console( ('hf mf nested 1 0 A %s d'):format(keyA) ) end + core.clearCommandBuffer() + -- Loading keyfile print('Loading dumpkeys.bin') - local infile = io.open(input, "rb") - if infile == nil then - return oops('Could not read file ', input) + local hex, err = utils.ReadDumpFile(input) + if not hex then + return oops(err) end - local akeys = readdumpkeys(infile):sub(0,12*16) - + + local akeys = hex:sub(0,12*16) + -- Read block 0 cmd = Command:new{cmd = cmds.CMD_MIFARE_READBL, arg1 = 0,arg2 = 0,arg3 = 0, data = keyA} err = core.SendCommand(cmd:getBytes()) @@ -170,8 +185,10 @@ local function main(args) local blocks = {} print('Reading card data') - + core.clearCommandBuffer() + -- main loop + io.write('Decrypting blocks > ') for blockNo = 0, numBlocks-1, 1 do if core.ukbhit() then @@ -187,50 +204,70 @@ local function main(args) local blockdata, err = waitCmd() if err then return oops(err) end - local b = blockNo%4 - - if b ~= 3 then + if blockNo%4 ~= 3 then if blockNo < 8 then -- Block 0-7 not encrypted - blocks[blockNo+1] = ('%02d :: %s :: %s'):format(blockNo,blockdata,blockdata) + blocks[blockNo+1] = ('%02d :: %s'):format(blockNo,blockdata) else - local base = ('%s%s%d%s'):format(block0, block1, blockNo, hashconstant) local md5hash = md5.sumhexa(base) + local base = ('%s%s%02x%s'):format(block0, block1, blockNo, HASHCONSTANT) + local baseStr = utils.ConvertHexToAscii(base) + local md5hash = md5.sumhexa(baseStr) local aestest = core.aes(md5hash, blockdata) - - local _,hex = bin.unpack(("H%d"):format(16),aestest) - - -- local hexascii = string.gsub(hex, '(%x%x)', - -- function(value) - -- return string.char(tonumber(value, 16)) - -- end - -- ) + local hex = utils.ConvertAsciiToBytes(aestest) + hex = utils.ConvertBytesToHex(hex) + --local _,hex = bin.unpack(("H%d"):format(16),aestest) + + -- blocks with zero not encrypted. if string.find(blockdata, '^0+$') then - blocks[blockNo+1] = ('%02d :: %s :: %s'):format(blockNo,blockdata,blockdata) + blocks[blockNo+1] = ('%02d :: %s'):format(blockNo,blockdata) else - --blocks[blockNo+1] = ('%02d :: %s :: %s :: %s '):format(blockNo,key,md5hash,hex) - blocks[blockNo+1] = ('%02d :: %s :: %s'):format(blockNo,blockdata,hex) + blocks[blockNo+1] = ('%02d :: %s'):format(blockNo,hex) + io.write( blockNo..',') end end - else -- Sectorblocks, not encrypted - blocks[blockNo+1] = ('%02d :: %s :: %s'):format(blockNo,blockdata,blockdata) + blocks[blockNo+1] = ('%02d :: %s%s'):format(blockNo,key,blockdata:sub(13,32)) end end + io.write('\n') + core.clearCommandBuffer() + -- Print results + local bindata = {} + local emldata = '' + + for _,s in pairs(blocks) do + local slice = s:sub(8,#s) + local str = utils.ConvertBytesToAscii( + utils.ConvertHexToBytes(slice) + ) + emldata = emldata..slice..'\n' + for c in (str):gmatch('.') do + bindata[#bindata+1] = c + end + end + + -- Write dump to files + if not DEBUG then + local foo = dumplib.SaveAsBinary(bindata, outputTemplate..'.bin') + print(("Wrote a BIN dump to the file %s"):format(foo)) + local bar = dumplib.SaveAsText(emldata, outputTemplate..'.eml') + print(("Wrote a EML dump to the file %s"):format(bar)) + end + local uid = block0:sub(1,8) local itemtype = block1:sub(1,4) local cardid = block1:sub(9,24) - print( (' UID : %s'):format(uid) ) - print( (' ITEM TYPE : %s - %s'):format(itemtype, toyNames[itemtype]) ) - print( (' CARDID : %s'):format(cardid ) ) - print('BLK :: DATA DECRYPTED' ) - print( string.rep('--',36) ) - for _,s in pairs(blocks) do - print( s ) - end -end + -- Show info + print( string.rep('--',20) ) + print( (' ITEM TYPE : 0x%s - %s'):format(itemtype, toyNames[itemtype]) ) + print( (' UID : 0x%s'):format(uid) ) + print( (' CARDID : 0x%s'):format(cardid ) ) + print( string.rep('--',20) ) + +end main(args) \ No newline at end of file