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https://github.com/hashcat/hashcat.git
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94 lines
3.1 KiB
Python
Executable File
94 lines
3.1 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Author: Gabriele 'matrix' Gristina
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# Version: 2.0
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# Date: Thu 12 Aug 2021 06:44:14 PM CEST
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# License: MIT
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# Extract metamask vault from browser and save to file, then you can use this tool
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# reference: https://metamask.zendesk.com/hc/en-us/articles/360018766351-How-to-use-the-Vault-Decryptor-with-the-MetaMask-Vault-Data
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# From version 2.0 works also for Metamask Mobile
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# reference: https://github.com/3rdIteration/btcrecover/pull/346
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import json
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import argparse
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import base64
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def metamask_parser(file, shortdata):
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try:
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f = open(file)
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j = json.load(f)
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isMobile = False
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if 'engine' not in j:
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if 'salt' not in j or 'iv' not in j or 'data' not in j:
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print("! Invalid vault format ...")
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parser.print_help()
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exit(1)
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else:
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f.close()
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wallet_data = open(file, "rb").read().decode("utf-8","ignore").replace("\\","")
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# taken from https://github.com/3rdIteration/btcrecover/blob/master/btcrecover/btcrpass.py#L3096-L3103
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walletStartText = "vault"
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wallet_data_start = wallet_data.lower().find(walletStartText)
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wallet_data_trimmed = wallet_data[wallet_data_start:]
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wallet_data_start = wallet_data_trimmed.find("cipher")
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wallet_data_trimmed = wallet_data_trimmed[wallet_data_start - 2:]
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wallet_data_end = wallet_data_trimmed.find("}")
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wallet_data = wallet_data_trimmed[:wallet_data_end + 1]
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wallet_json = json.loads(wallet_data)
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j = json.loads(wallet_data)
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if 'lib' in j and 'original' in j['lib']:
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isMobile = True
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else:
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print("! Invalid vault format ...")
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parser.print_help()
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exit(1)
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if isMobile is False:
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if((len(j['data']) > 3000) or shortdata):
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data_bin = base64.b64decode(j['data'])
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# TODO limit data to 16 bytes, we only check the first block of data, so we don't need more data.
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# The use of smaller buffers should speedup the attack.
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# Still the pbkdf 10k iter will be taking the most time by far probably.
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j['data'] = base64.b64encode(data_bin[0:64]).decode("ascii")
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print('$metamask-short$' + j['salt'] + '$' + j['iv'] + '$' + j['data'])
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else:
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print('$metamask$' + j['salt'] + '$' + j['iv'] + '$' + j['data'])
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else:
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# extract only first 16 bytes of ciphertext
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cipher_bin = base64.b64decode(j['cipher'])
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j['cipher'] = base64.b64encode(cipher_bin[:16]).decode("ascii")
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print('$metamaskMobile$' + j['salt'] + '$' + j['iv'] + '$' + j['cipher'])
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except ValueError as e:
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parser.print_help()
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exit(1)
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exit(0)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description="metamask2hashcat.py extraction tool")
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parser.add_argument('--vault', required=True, help='set metamask vault (json) file from path', type=str)
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parser.add_argument('--shortdata', help='force short data, can only be used with m26610, ', action='store_true')
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args = parser.parse_args()
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if args.vault:
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metamask_parser(args.vault, args.shortdata)
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else:
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parser.print_help()
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exit(1)
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