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#!/usr/bin/env python
# Impacket - Collection of Python classes for working with network protocols.
#
# Copyright Fortra, LLC and its affiliated companies
#
# All rights reserved.
#
# This software is provided under a slightly modified version
# of the Apache Software License. See the accompanying LICENSE file
# for more information.
#
# Description:
# This script will convert kirbi files (commonly used by mimikatz) into ccache files used by impacket,
# and vice versa.
#
# Examples:
# ./ticket_converter.py admin.ccache admin.kirbi
# ./ticket_converter.py admin.kirbi admin.ccache
#
# Author:
# Zer1t0 (https://github.com/Zer1t0)
#
# References:
# - https://tools.ietf.org/html/rfc4120
# - http://web.mit.edu/KERBEROS/krb5-devel/doc/formats/ccache_file_format.html
# - https://github.com/gentilkiwi/kekeo
# - https://github.com/rvazarkar/KrbCredExport
#
import argparse
import struct
from impacket import version
from impacket.krb5.ccache import CCache
def parse_args():
parser = argparse.ArgumentParser()
parser.add_argument('input_file', help="File in kirbi (KRB-CRED) or ccache format")
parser.add_argument('output_file', help="Output file")
return parser.parse_args()
def main():
print(version.BANNER)
args = parse_args()
if is_kirbi_file(args.input_file):
print('[*] converting kirbi to ccache...')
convert_kirbi_to_ccache(args.input_file, args.output_file)
print('[+] done')
elif is_ccache_file(args.input_file):
print('[*] converting ccache to kirbi...')
convert_ccache_to_kirbi(args.input_file, args.output_file)
print('[+] done')
else:
print('[X] unknown file format')
def is_kirbi_file(filename):
with open(filename, 'rb') as fi:
fileid = struct.unpack(">B", fi.read(1))[0]
return fileid == 0x76
def is_ccache_file(filename):
with open(filename, 'rb') as fi:
fileid = struct.unpack(">B", fi.read(1))[0]
return fileid == 0x5
def convert_kirbi_to_ccache(input_filename, output_filename):
ccache = CCache.loadKirbiFile(input_filename)
ccache.saveFile(output_filename)
def convert_ccache_to_kirbi(input_filename, output_filename):
ccache = CCache.loadFile(input_filename)
ccache.saveKirbiFile(output_filename)
if __name__ == '__main__':
main()
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