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iceman1001
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1 changed files with 101 additions and 103 deletions
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@ -2,6 +2,7 @@ local utils = require('utils')
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local cmds = require('commands')
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local getopt = require('getopt')
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local ansicolors = require('ansicolors')
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--[[
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script to create a clone-dump with new crc
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Author: mosci
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@ -17,18 +18,15 @@ local ansicolors = require('ansicolors')
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simplest usage:
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read a valid legic tag with 'hf legic reader'
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save the dump with 'hf legic dump o orig'
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place your 'empty' tag on the reader and run 'script run Legic_clone -i orig.bin -w'
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save the dump with 'hf legic dump f orig'
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place your 'empty' tag on the reader and run 'script run legic_clone -i orig.bin -w'
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you will see some output like:
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read 1024 bytes from orig.bin
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place your empty tag onto the PM3 to read and display the MCD & MSN0..2
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the values will be shown below
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confirm when ready [y/n] ?y
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#db# setting up legic card
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#db# MIM 256 card found, reading card ...
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#db# Card read, use 'hf legic decode' or
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#db# 'data hexsamples 8' to view results
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0b ad c0 de <- !! here you'll see the MCD & MSN of your empty tag, which has to be typed in manually as seen below !!
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type in MCD as 2-digit value - e.g.: 00 (default: 79 )
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> 0b
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@ -93,18 +91,18 @@ author = 'Mosci'
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version = 'v1.0.2'
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desc = [[
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This is a script which creates a clone-dump of a dump from a Legic Prime Tag (MIM256 or MIM1024)
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(created with 'hf legic dump f my_dump')
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Create a dump by running 'hf legic dump'.
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]]
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example = [[
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script run legic_clone -i my_dump.bin -o my_clone.bin -c f8
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script run legic_clone -i my_dump.bin -d -s
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]]
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usage = [[
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script run legic_clone -h -i <file> -o <file> -c <crc> -d -s -w
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script run legic_clone [-h] [-i <file>] [-o <file>] [-c <crc>] [-d] [-s] [-w]
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]]
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arguments = [[
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required :
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-i <input file> (file to read data from, must be in binary format (*.bin))
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-i <input file> - file to read data from, must be in binary format (*.bin)
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optional :
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-h - Help text
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@ -112,7 +110,7 @@ optional :
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-c <new-tag crc> - requires option -o to be given
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-d - Display content of found Segments
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-s - Display summary at the end
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-w - write directly to Tag - a file myLegicClone.bin will be generated also
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-w - write directly to tag - a file hf-legic-UID-dump.bin will also be generated
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e.g.:
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hint: using the CRC '00' will result in a plain dump ( -c 00 )
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@ -139,7 +137,20 @@ local function oops(err)
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core.clearCommandBuffer()
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return nil, err
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end
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---
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-- Usage help
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local function help()
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print(copyright)
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print(author)
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print(version)
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print(desc)
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print(ansicolors.cyan..'Usage'..ansicolors.reset)
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print(usage)
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print(ansicolors.cyan..'Arguments'..ansicolors.reset)
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print(arguments)
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print(ansicolors.cyan..'Example usage'..ansicolors.reset)
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print(example)
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end
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-- read LEGIC data
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local function readlegicdata(offset, length, iv)
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-- Read data
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@ -156,30 +167,15 @@ local function readlegicdata( offset, length, iv )
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return result
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end
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---
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-- Usage help
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local function help()
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print(copyright)
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print(author)
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print(version)
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print(desc)
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print(ansicolors.cyan..'Usage'..ansicolors.reset)
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print(usage)
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print(ansicolors.cyan..'Arguments'..ansicolors.reset)
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print(arguments)
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print(ansicolors.cyan..'Example usage'..ansicolors.reset)
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print(example)
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end
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-- Check availability of file
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local function file_check(file_name)
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local file_found = io.open(file_name, "r")
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if not file_found then
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file_found = false
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local exists = io.open(file_name, "r")
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if not exists then
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exists = false
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else
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file_found = true
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exists = true
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end
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return file_found
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return exists
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end
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--- xor-wrapper
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@ -241,7 +237,7 @@ local function xorBytes(inBytes, crc)
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end
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-- get raw segment-data
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function getSegmentData(bytes, start, index)
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local function getSegmentData(bytes, start, index)
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local raw, len, valid, last, wrp, wrc, rd, crc
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local segment = {}
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segment[0] = bytes[start]..' '..bytes[start + 1]..' '..bytes[start + 2]..' '..bytes[start + 3]
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@ -280,7 +276,7 @@ end
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--- Kaba Group Header
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-- checks if a segment does have a kghCRC
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-- returns boolean false if no kgh has being detected or the kghCRC if a kgh was detected
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function CheckKgh(bytes, segStart, segEnd)
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local function CheckKgh(bytes, segStart, segEnd)
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if (bytes[8] == '9f' and bytes[9] == 'ff' and bytes[13] == '11') then
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local i
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local data = {}
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@ -308,7 +304,7 @@ function CheckKgh(bytes, segStart, segEnd)
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end
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-- get only the addresses of segemnt-crc's and the length of bytes
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function getSegmentCrcBytes(bytes)
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local function getSegmentCrcBytes(bytes)
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local start = 23
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local index = 0
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local crcbytes = {}
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@ -323,7 +319,7 @@ function getSegmentCrcBytes(bytes)
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end
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-- print segment-data (hf legic info like)
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function displaySegments(bytes)
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local function displaySegments(bytes)
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--display segment header(s)
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start = 23
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index = '00'
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@ -365,7 +361,7 @@ function displaySegments(bytes)
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end
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print(pld)
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if (KGH) then
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print("'Kaba Group Header' detected")
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print(ansicolors.yellow.."'Kaba Group Header' detected"..ansicolors.reset)
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end
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start = start + Seg[4]
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index = prepend_zero(tonumber(Seg[9]) + 1)
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@ -374,7 +370,7 @@ function displaySegments(bytes)
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end
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-- print Segment values
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function printSegment(SegmentData)
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local function printSegment(SegmentData)
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res = "\nSegment "..SegmentData[9]..": "
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res = res.. "raw header="..SegmentData[0]..", "
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res = res.. "flag="..SegmentData[1].." (valid="..SegmentData[2].." last="..SegmentData[3].."), "
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@ -387,7 +383,7 @@ function printSegment(SegmentData)
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end
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-- write clone-data to tag
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function writeToTag(plainBytes)
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local function writeToTag(plainBytes)
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local SegCrcs = {}
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local output
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local readbytes
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@ -399,6 +395,7 @@ function writeToTag(plainBytes)
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-- gather MCD & MSN from new Tag - this must be enterd manually
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print("\nthese are the MCD MSN0 MSN1 MSN2 from the Tag that has being read:")
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-- readbytes is a usbcommandOLD package, hence 32 bytes offset until data.
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plainBytes[1] = ('%02x'):format(readbytes:byte(33))
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plainBytes[2] = ('%02x'):format(readbytes:byte(34))
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plainBytes[3] = ('%02x'):format(readbytes:byte(35))
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@ -411,7 +408,7 @@ function writeToTag(plainBytes)
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-- calculate crc8 over MCD & MSN
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cmd = MCD..MSN0..MSN1..MSN2
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MCC = ("%02x"):format(utils.Crc8Legic(cmd))
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print("MCD:"..MCD..", MSN:"..MSN0.." "..MSN1.." "..MSN2..", MCC:"..MCC)
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print("MCD:"..ansicolors.green..MCD..ansicolors.reset..", MSN:"..ansicolors.green..MSN0.." "..MSN1.." "..MSN2..ansicolors.reset..", MCC:"..MCC)
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-- calculate new Segment-CRC for each valid segment
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SegCrcs = getSegmentCrcBytes(plainBytes)
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@ -439,15 +436,15 @@ function writeToTag(plainBytes)
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bytes = xorBytes(plainBytes, MCC)
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-- write data to file
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if (writeOutputBytes(bytes, "myLegicClone.bin")) then
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if (writeOutputBytes(bytes, "hf-legic-UID-dump.bin")) then
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-- write pm3-buffer to Tag
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cmd = ('hf legic restore f myLegicClone')
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cmd = ('hf legic restore f hf-legic-UID-dump')
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core.console(cmd)
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end
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end
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-- main function
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function main(args)
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local function main(args)
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-- some variables
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local i = 0
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local oldcrc, newcrc, infile, outfile
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@ -468,14 +465,13 @@ function main(args)
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-- input file
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if o == 'i' then
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infile = a
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if (file_check(infile)==false) then
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return oops('input file: '..infile..' not found')
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else
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if (file_check(infile) == false) then return oops('input file: '..infile..' not found') end
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bytes = getInputBytes(infile)
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oldcrc = bytes[5]
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ifs = true
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if (bytes == false) then return oops('couldnt get input bytes') end
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end
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i = i + 1
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end
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-- new crc
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@ -515,12 +511,14 @@ function main(args)
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res = "\n+-------------------------------------------- Summary -------------------------------------------+"
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res = res .."\ncreated clone_dump from\n\t"..infile.." crc: "..oldcrc.."\ndump_file:"
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res = res .."\n\t"..outfile.." crc: "..string.sub(newcrc, -2)
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res = res .."\nyou may load the new file with: hf legic eload "..outfile
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res = res .."\nyou may load the new file with:"
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res = res ..ansicolors.yellow.."hf legic eload f "..outfile..ansicolors.reset
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res = res .."\n\nif you don't write to tag immediately ('-w' switch) you will need to recalculate each segmentCRC"
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res = res .."\nafter writing this dump to a tag!"
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res = res .."\n\na segmentCRC gets calculated over MCD,MSN0..3, Segment-Header0..3"
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res = res .."\ne.g. (based on Segment00 of the data from "..infile.."):"
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res = res .."\nhf legic crc d "..bytes[1]..bytes[2]..bytes[3]..bytes[4]..bytes[23]..bytes[24]..bytes[25]..bytes[26].." u "..newcrc.." c 8"
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res = res .."\n"
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res = res ..ansicolors.yellow.."hf legic crc d "..bytes[1]..bytes[2]..bytes[3]..bytes[4]..bytes[23]..bytes[24]..bytes[25]..bytes[26].." u "..newcrc.." c 8"..ansicolors.reset
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-- this can not be calculated without knowing the new MCD, MSN0..2
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print(res)
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end
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