ADD: @zhovner 's mfd file parser https://github.com/zhovner/mfdread Looks really...

diff --git a/client/pm3_mfdread.py b/client/pm3_mfdread.py
new file mode 100644 (file)
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+++ b/client/pm3_mfdread.py
@@ -0,0 +1,160 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+#  mfdread.py - Mifare dumps parser in human readable format
+#  Pavel Zhovner <pavel@zhovner.com>
+#  https://github.com/zhovner/mfdread
+
+
+
+import codecs
+import sys
+from struct import unpack 
+from datetime import datetime
+from bitstring import BitArray
+
+
+if len(sys.argv) == 1:
+    print('''
+------------------
+Usage: mfdread.py ./dump.mfd
+Mifare dumps reader. 
+
+''')
+    sys.exit();
+
+
+
+
+class bashcolors:
+    BLUE = '\033[34m'
+    RED = '\033[91m'
+    GREEN = '\033[32m'
+    WARNING = '\033[93m'
+    ENDC = '\033[0m'
+
+
+def accbits_for_blocknum(accbits_str, blocknum):
+    '''
+    Decodes the access bit string for block "blocknum".
+    Returns the three access bits for the block or False if the
+    inverted bits do not match the access bits.
+    '''
+    bits = BitArray([0])
+    inverted = BitArray([0])
+    # Block 0 access bits
+    if blocknum == 0:
+        bits = BitArray([accbits_str[11], accbits_str[23], accbits_str[19]])
+        inverted = BitArray([accbits_str[7], accbits_str[3], accbits_str[15]])
+
+    # Block 0 access bits
+    elif blocknum == 1:
+        bits = BitArray([accbits_str[10], accbits_str[22], accbits_str[18]])
+        inverted = BitArray([accbits_str[6], accbits_str[2], accbits_str[14]])
+    # Block 0 access bits
+    elif blocknum == 2:
+        bits = BitArray([accbits_str[9], accbits_str[21], accbits_str[17]])
+        inverted = BitArray([accbits_str[5], accbits_str[1], accbits_str[13]])
+    # Sector trailer / Block 3 access bits
+    elif blocknum == 3:
+        bits = BitArray([accbits_str[8], accbits_str[20], accbits_str[16]])
+        inverted = BitArray([accbits_str[4], accbits_str[0], accbits_str[12]])
+
+    # Check the decoded bits
+    inverted.invert()
+    if bits.bin == inverted.bin:
+        return bits
+    else:
+        return False
+
+
+
+
+def accbit_info(accbits):
+    '''
+    Returns  a dictionary of a access bits for all three blocks in a sector.
+    If the access bits for block could not be decoded properly, the value is set to False.
+    '''
+    decAccbits = {}
+    # Decode access bits for all 4 blocks of the sector
+    for i in range(0, 4):
+        decAccbits[i] = accbits_for_blocknum(accbits, i)
+    return decAccbits
+
+
+
+
+
+def print_info(data):
+
+    blocksmatrix = []
+    blockrights = {}
+
+    # determine what dump we get 1k or 4k
+    if len(data) == 4096:
+        cardsize = 64
+    elif len(data) == 1024:
+        cardsize = 16
+    else: 
+        print("Wrong file size: %d bytes.\nOnly 1024 or 4096 allowed." % len(data))
+        sys.exit();
+
+    # read all sectors
+    for i in range(0, cardsize):
+        start = i * 64
+        end   = (i + 1) * 64
+        sector = data[start:end]
+        sector = codecs.encode(sector, 'hex')
+        if not type(sector) is str:
+            sector = str(sector, 'ascii')
+        blocksmatrix.append([sector[x:x+32] for x in range(0, len(sector), 32)])
+
+    # add colors for each keyA, access bits, KeyB
+    for c in range(0, len(blocksmatrix)):
+        # Fill in the access bits
+        blockrights[c] = accbit_info(BitArray('0x'+blocksmatrix[c][3][12:20]))
+        # Prepare colored output of the sector trailor
+        keyA =  bashcolors.RED + blocksmatrix[c][3][0:12] + bashcolors.ENDC
+        accbits = bashcolors.GREEN + blocksmatrix[c][3][12:20] + bashcolors.ENDC
+        keyB =  bashcolors.BLUE + blocksmatrix[c][3][20:32] + bashcolors.ENDC
+        blocksmatrix[c][3] = keyA + accbits + keyB
+
+
+    print("File size: %d bytes. Expected %d sectors" %(len(data),cardsize))
+    print("\n\tUID:  " + blocksmatrix[0][0][0:8])
+    print("\tBCC:  " + blocksmatrix[0][0][8:10])
+    print("\tSAK:  " + blocksmatrix[0][0][10:12])
+    print("\tATQA: " + blocksmatrix[0][0][12:14])
+    print("                   %sKey A%s    %sAccess Bits%s    %sKey B%s" %(bashcolors.RED,bashcolors.ENDC,bashcolors.GREEN,bashcolors.ENDC,bashcolors.BLUE,bashcolors.ENDC))
+    print("╔═════════╦═════╦══════════════════════════════════╦═══════════════╗")
+    print("║  Sector ║Block║            Data                  ║  Access Bits  ║")
+    for q in range(0, len(blocksmatrix)):
+        print("╠═════════╬═════╬══════════════════════════════════╬═══════════════╣")
+
+        # z is the block in each sector
+        for z in range(0, len(blocksmatrix[q])):
+            # Format the access bits. Print ERR in case of an error
+            accbits = ""
+            if isinstance(blockrights[q][z], BitArray):
+                accbits = bashcolors.GREEN + blockrights[q][z].bin + bashcolors.ENDC
+            else:
+                accbits = bashcolors.WARNING + "ERR" + bashcolors.ENDC
+
+            # Add Padding after the sector number
+            padLen = max(1, 5 - len(str(q)))
+            padding = " " * padLen
+            # Only print the sector number in the second third row
+            if (z == 2):
+                print("║    %d%s║  %d  ║ %s ║      %s      ║"  %(q,padding,z,blocksmatrix[q][z], accbits))
+            else:
+                print("║         ║  %d  ║ %s ║      %s      ║"  %(z,blocksmatrix[q][z], accbits))
+    print("╚═════════╩═════╩══════════════════════════════════╩═══════════════╝")
+
+
+def main(filename):
+    with open(filename, "rb") as f:
+        data = f.read()
+        print_info(data)
+ 
+if __name__ == "__main__":
+    main(sys.argv[1])