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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # RubeusToCcache 2 | A small tool to convert Base64-encoded .kirbi tickets from Rubeus into .ccache files for Impacket 3 | 4 | ## Overview 5 | 6 | This is a small tool to handle a common use case I run into often. Rubeus outputs TGTs in Base64-encoded .kirbi files, 7 | whereas Impacket tools, like `wmiexec.py` or `smbexec.py` use the .ccache file format. The two formats are easily 8 | converted between, thanks to Impacket and Zer1t0's [ticket_converter.py](https://github.com/Zer1t0/ticket_converter). 9 | But I wanted to be able to use the Rubeus `/nowrap` option and send it right to a tool to get both .kirib and .ccache 10 | files. Which is what this script does. Big thanks to Zer1t0 and the [Impacket](https://www.secureauth.com/labs/open-source-tools/impacket) project. 11 | 12 | ## Usage 13 | 14 | ``` 15 | ╦═╗┬ ┬┌┐ ┌─┐┬ ┬┌─┐ ┌┬┐┌─┐ ╔═╗┌─┐┌─┐┌─┐┬ ┬┌─┐ 16 | ╠╦╝│ │├┴┐├┤ │ │└─┐ │ │ │ ║ │ ├─┤│ ├─┤├┤ 17 | ╩╚═└─┘└─┘└─┘└─┘└─┘ ┴ └─┘ ╚═╝└─┘┴ ┴└─┘┴ ┴└─┘ 18 | By Solomon Sklash 19 | github.com/SolomonSklash 20 | Inspired by Zer1t0's ticket_converter.py 21 | 22 | usage: rubeustoccache.py [-h] base64_input kirbi ccache 23 | 24 | positional arguments: 25 | base64_input The Base64-encoded .kirbi, sucha as from Rubeus. 26 | kirbi The name of the output file for the decoded .kirbi file. 27 | ccache The name of the output file for the ccache file. 28 | 29 | optional arguments: 30 | -h, --help show this help message and exit 31 | ``` 32 | 33 | ## Dependencies and Installation 34 | 35 | RubeusToCcache is written for Python 3, and requires the impacket and pyasn1 Python libraries. 36 | 37 | Run either `pip3 install impacket pyasn1` or `pip3 install -r requirements.txt` 38 | 39 | ``` 40 | git clone https://github.com/SolomonSklash/RubeusToCcache 41 | cd RubeusToCcache 42 | pip3 install -r requirements.txt 43 | ``` 44 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | impacket 2 | pyasn1 3 | -------------------------------------------------------------------------------- /rubeustoccache.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/python3 2 | # 3 | # Author: 4 | # Solomon Sklash (https://github.com/SolomonSklash) 5 | # Heavily based on ticket_converter.py by Zer1t0 (https://github.com/Zer1t0) 6 | # 7 | # Description: 8 | # This script will convert the Base64 representation of .kirbi files into both a decoded 9 | # .kirbi and a .ccache file, as used by Impacket scripts. 10 | # 11 | # References: 12 | # https://github.com/Zer1t0/ticket_converter 13 | # https://tools.ietf.org/html/rfc4120 14 | # http://web.mit.edu/KERBEROS/krb5-devel/doc/formats/ccache_file_format.html 15 | # https://github.com/gentilkiwi/kekeo 16 | # https://github.com/rvazarkar/KrbCredExport 17 | # 18 | # Usage: 19 | # ./rubeustoccache.py BASE64_BLOB ticket.kirbi ticket.ccache 20 | # 21 | import sys 22 | import base64 23 | import argparse 24 | from impacket.krb5.ccache import CCache 25 | 26 | 27 | def parse_args(): 28 | parser = argparse.ArgumentParser() 29 | parser.add_argument('base64_input', help="The Base64-encoded .kirbi, sucha as from Rubeus.") 30 | parser.add_argument('kirbi', help="The name of the output file for the decoded .kirbi file.") 31 | parser.add_argument('ccache', help="The name of the output file for the ccache file.") 32 | return parser.parse_args() 33 | 34 | def main(): 35 | banner = "╦═╗┬ ┬┌┐ ┌─┐┬ ┬┌─┐ ┌┬┐┌─┐ ╔═╗┌─┐┌─┐┌─┐┬ ┬┌─┐\n" 36 | banner += "╠╦╝│ │├┴┐├┤ │ │└─┐ │ │ │ ║ │ ├─┤│ ├─┤├┤ \n" 37 | banner += "╩╚═└─┘└─┘└─┘└─┘└─┘ ┴ └─┘ ╚═╝└─┘┴ ┴└─┘┴ ┴└─┘\n" 38 | banner += (" " * 14) + "By Solomon Sklash\n" 39 | banner += (" " * 10) + "github.com/SolomonSklash\n" 40 | banner += (" " * 2) + " Inspired by Zer1t0's ticket_converter.py\n" 41 | 42 | print(banner) 43 | 44 | args = parse_args() 45 | 46 | try: 47 | result = base64.b64decode(args.base64_input.encode('ascii')) 48 | except: 49 | print("[!] Failed to decode provided base64 string.") 50 | exit(1) 51 | try: 52 | with open(args.kirbi, 'wb') as kirbi_file: 53 | kirbi_file.write(result) 54 | kirbi_file.close() 55 | print("[*] Writing decoded .kirbi file to " + str(args.kirbi)) 56 | except: 57 | print("[!] Failed to write ticket to temporary .kirbi file.") 58 | 59 | try: 60 | convert_kirbi_to_ccache(args.kirbi, args.ccache) 61 | print("[*] Writing converted .ccache file to " + str(args.ccache)) 62 | except: 63 | print("[!] Failed to convert .kirbi file to .ccache file.") 64 | print("[*] All done! Don't forget to set your environment variable: export KRB5CCNAME=" + str(args.ccache)) 65 | 66 | def convert_kirbi_to_ccache(input_filename, output_filename): 67 | ccache = CCache.loadKirbiFile(input_filename) 68 | ccache.saveFile(output_filename) 69 | 70 | def convert_ccache_to_kirbi(input_filename, output_filename): 71 | ccache = CCache.loadFile(input_filename) 72 | ccache.saveKirbiFile(output_filename) 73 | 74 | if __name__ == '__main__': 75 | main() 76 | --------------------------------------------------------------------------------