mirror of https://github.com/ConsenSys/mythril
Merge pull request #173 from tintinweb/refactor/main
Refactor main, clean-up and create a Mythril interface class that can be reused for scripting or other purposespull/174/merge
Bernhard Mueller
7 years ago
committed by
GitHub
commit
58eadb9cf6
@ -1,8 +1,9 @@ |
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#!/usr/bin/env python3 |
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# -*- coding: UTF-8 -*- |
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"""mythril.py: Bug hunting on the Ethereum blockchain |
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http://www.github.com/b-mueller/mythril |
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""" |
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from mythril import __main__ |
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import mythril.interfaces.cli |
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|
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if __name__ == "__main__": |
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__main__.main() |
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mythril.interfaces.cli.main() |
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|
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@ -1,458 +1,6 @@ |
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#!/usr/bin/env python3 |
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# -*- coding: UTF-8 -*- |
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"""mythril.py: Bug hunting on the Ethereum blockchain |
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|
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http://www.github.com/b-mueller/mythril |
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""" |
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|
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import logging |
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import json |
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import sys |
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import argparse |
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import os |
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import re |
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|
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from ethereum import utils |
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from solc.exceptions import SolcError |
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import solc |
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|
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from mythril.ether import util |
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from mythril.ether.contractstorage import get_persistent_storage |
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from mythril.ether.ethcontract import ETHContract |
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from mythril.ether.soliditycontract import SolidityContract |
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from mythril.rpc.client import EthJsonRpc |
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from mythril.ipc.client import EthIpc |
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from mythril.rpc.exceptions import ConnectionError |
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from mythril.support import signatures |
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from mythril.support.truffle import analyze_truffle_project |
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from mythril.support.loader import DynLoader |
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from mythril.exceptions import CompilerError, NoContractFoundError |
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from mythril.analysis.symbolic import SymExecWrapper |
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from mythril.analysis.callgraph import generate_graph |
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from mythril.analysis.traceexplore import get_serializable_statespace |
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from mythril.analysis.security import fire_lasers |
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from mythril.analysis.report import Report |
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from mythril.leveldb.client import EthLevelDB |
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|
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# logging.basicConfig(level=logging.DEBUG) |
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def searchCallback(code_hash, code, addresses, balances): |
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print("Matched contract with code hash " + code_hash) |
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for i in range(0, len(addresses)): |
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print("Address: " + addresses[i] + ", balance: " + str(balances[i])) |
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|
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def exitWithError(format, message): |
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if format == 'text' or format == 'markdown': |
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print(message) |
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else: |
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result = {'success': False, 'error': str(message), 'issues': []} |
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print(json.dumps(result)) |
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sys.exit() |
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|
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def main(): |
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parser = argparse.ArgumentParser(description='Security analysis of Ethereum smart contracts') |
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parser.add_argument("solidity_file", nargs='*') |
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|
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commands = parser.add_argument_group('commands') |
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commands.add_argument('-g', '--graph', help='generate a control flow graph', metavar='OUTPUT_FILE') |
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commands.add_argument('-x', '--fire-lasers', action='store_true', help='detect vulnerabilities, use with -c, -a or solidity file(s)') |
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commands.add_argument('-t', '--truffle', action='store_true', help='analyze a truffle project (run from project dir)') |
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commands.add_argument('-d', '--disassemble', action='store_true', help='print disassembly') |
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commands.add_argument('-j', '--statespace-json', help='dumps the statespace json', metavar='OUTPUT_FILE') |
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|
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inputs = parser.add_argument_group('input arguments') |
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inputs.add_argument('-c', '--code', help='hex-encoded bytecode string ("6060604052...")', metavar='BYTECODE') |
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inputs.add_argument('-a', '--address', help='pull contract from the blockchain', metavar='CONTRACT_ADDRESS') |
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inputs.add_argument('-l', '--dynld', action='store_true', help='auto-load dependencies from the blockchain') |
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outputs = parser.add_argument_group('output formats') |
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outputs.add_argument('-o', '--outform', choices=['text', 'markdown', 'json'], default='text', help='report output format', metavar='<text/json>') |
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outputs.add_argument('--verbose-report', action='store_true', help='Include debugging information in report') |
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|
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database = parser.add_argument_group('local contracts database') |
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database.add_argument('--init-db', action='store_true', help='initialize the contract database') |
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database.add_argument('-s', '--search', help='search the contract database', metavar='EXPRESSION') |
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utilities = parser.add_argument_group('utilities') |
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utilities.add_argument('--hash', help='calculate function signature hash', metavar='SIGNATURE') |
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utilities.add_argument('--storage', help='read state variables from storage index, use with -a', metavar='INDEX,NUM_SLOTS,[array] / mapping,INDEX,[KEY1, KEY2...]') |
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utilities.add_argument('--solv', help='specify solidity compiler version. If not present, will try to install it (Experimental)', metavar='SOLV') |
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options = parser.add_argument_group('options') |
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options.add_argument('-m', '--modules', help='Comma-separated list of security analysis modules', metavar='MODULES') |
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options.add_argument('--max-depth', type=int, default=12, help='Maximum recursion depth for symbolic execution') |
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options.add_argument('--solc-args', help='Extra arguments for solc') |
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options.add_argument('--phrack', action='store_true', help='Phrack-style call graph') |
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options.add_argument('--enable-physics', action='store_true', help='enable graph physics simulation') |
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options.add_argument('-v', type=int, help='log level (0-2)', metavar='LOG_LEVEL') |
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options.add_argument('--leveldb', help='enable direct leveldb access operations', metavar='LEVELDB_PATH') |
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rpc = parser.add_argument_group('RPC options') |
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rpc.add_argument('-i', action='store_true', help='Preset: Infura Node service (Mainnet)') |
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rpc.add_argument('--rpc', help='custom RPC settings', metavar='HOST:PORT / ganache / infura-[network_name]') |
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rpc.add_argument('--rpctls', type=bool, default=False, help='RPC connection over TLS') |
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rpc.add_argument('--ipc', action='store_true', help='Connect via local IPC') |
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|
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# Get config values |
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args = parser.parse_args() |
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try: |
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mythril_dir = os.environ['MYTHRIL_DIR'] |
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except KeyError: |
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mythril_dir = os.path.join(os.path.expanduser('~'), ".mythril") |
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|
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# Detect unsupported combinations of command line args |
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if args.dynld and not args.address: |
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exitWithError(args.outform, "Dynamic loader can be used in on-chain analysis mode only (-a).") |
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# Initialize data directory and signature database |
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if not os.path.exists(mythril_dir): |
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logging.info("Creating mythril data directory") |
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os.mkdir(mythril_dir) |
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# If no function signature file exists, create it. Function signatures from Solidity source code are added automatically. |
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signatures_file = os.path.join(mythril_dir, 'signatures.json') |
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sigs = {} |
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if not os.path.exists(signatures_file): |
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logging.info("No signature database found. Creating empty database: " + signatures_file + "\n" + |
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"Consider replacing it with the pre-initialized database at https://raw.githubusercontent.com/ConsenSys/mythril/master/signatures.json") |
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with open(signatures_file, 'a') as f: |
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json.dump({}, f) |
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with open(signatures_file) as f: |
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try: |
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sigs = json.load(f) |
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except JSONDecodeError as e: |
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exitWithError(args.outform, "Invalid JSON in signatures file " + signatures_file + "\n" + str(e)) |
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# Parse cmdline args |
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if not (args.search or args.init_db or args.hash or args.disassemble or args.graph or args.fire_lasers or args.storage or args.truffle or args.statespace_json): |
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parser.print_help() |
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sys.exit() |
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if args.v: |
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if 0 <= args.v < 3: |
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logging.basicConfig(level=[logging.NOTSET, logging.INFO, logging.DEBUG][args.v]) |
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else: |
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exitWithError(args.outform, "Invalid -v value, you can find valid values in usage") |
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if args.hash: |
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print("0x" + utils.sha3(args.hash)[:4].hex()) |
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sys.exit() |
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if args.truffle: |
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try: |
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analyze_truffle_project(args) |
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except FileNotFoundError: |
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print("Build directory not found. Make sure that you start the analysis from the project root, and that 'truffle compile' has executed successfully.") |
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sys.exit() |
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# Figure out solc binary and version |
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# Only proper versions are supported. No nightlies, commits etc (such as available in remix) |
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if args.solv: |
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version = args.solv |
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# tried converting input to semver, seemed not necessary so just slicing for now |
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if version == str(solc.main.get_solc_version())[:6]: |
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logging.info('Given version matches installed version') |
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try: |
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solc_binary = os.environ['SOLC'] |
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except KeyError: |
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solc_binary = 'solc' |
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else: |
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if util.solc_exists(version): |
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logging.info('Given version is already installed') |
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else: |
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try: |
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solc.install_solc('v' + version) |
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except SolcError: |
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exitWithError(args.outform, "There was an error when trying to install the specified solc version") |
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solc_binary = os.path.join(os.environ['HOME'], ".py-solc/solc-v" + version, "bin/solc") |
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logging.info("Setting the compiler to " + str(solc_binary)) |
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else: |
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try: |
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solc_binary = os.environ['SOLC'] |
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except KeyError: |
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solc_binary = 'solc' |
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# Open LevelDB if specified |
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if args.leveldb: |
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ethDB = EthLevelDB(args.leveldb) |
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eth = ethDB |
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# Establish RPC/IPC connection if necessary |
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if (args.address or args.init_db) and not args.leveldb: |
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if args.i: |
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eth = EthJsonRpc('mainnet.infura.io', 443, True) |
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logging.info("Using INFURA for RPC queries") |
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elif args.rpc: |
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if args.rpc == 'ganache': |
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rpcconfig = ('localhost', 7545, False) |
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else: |
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m = re.match(r'infura-(.*)', args.rpc) |
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if m and m.group(1) in ['mainnet', 'rinkeby', 'kovan', 'ropsten']: |
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rpcconfig = (m.group(1) + '.infura.io', 443, True) |
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else: |
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try: |
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host, port = args.rpc.split(":") |
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rpcconfig = (host, int(port), args.rpctls) |
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except ValueError: |
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exitWithError(args.outform, "Invalid RPC argument, use 'ganache', 'infura-[network]' or 'HOST:PORT'") |
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if (rpcconfig): |
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eth = EthJsonRpc(rpcconfig[0], int(rpcconfig[1]), rpcconfig[2]) |
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logging.info("Using RPC settings: %s" % str(rpcconfig)) |
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else: |
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exitWithError(args.outform, "Invalid RPC settings, check help for details.") |
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elif args.ipc: |
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try: |
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eth = EthIpc() |
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except Exception as e: |
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exitWithError(args.outform, "IPC initialization failed. Please verify that your local Ethereum node is running, or use the -i flag to connect to INFURA. \n" + str(e)) |
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else: # Default configuration if neither RPC or IPC are set |
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eth = EthJsonRpc('localhost', 8545) |
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logging.info("Using default RPC settings: http://localhost:8545") |
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# Database search ops |
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if args.search or args.init_db: |
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contract_storage, _ = get_persistent_storage(mythril_dir) |
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if args.search: |
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try: |
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if not args.leveldb: |
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contract_storage.search(args.search, searchCallback) |
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else: |
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ethDB.search(args.search, searchCallback) |
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except SyntaxError: |
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exitWithError(args.outform, "Syntax error in search expression.") |
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elif args.init_db: |
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try: |
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contract_storage.initialize(eth) |
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except FileNotFoundError as e: |
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exitWithError(args.outform, "Error syncing database over IPC: " + str(e)) |
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except ConnectionError as e: |
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exitWithError(args.outform, "Could not connect to RPC server. Make sure that your node is running and that RPC parameters are set correctly.") |
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sys.exit() |
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# Load / compile input contracts |
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contracts = [] |
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address = None |
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if args.code: |
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address = util.get_indexed_address(0) |
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contracts.append(ETHContract(args.code, name="MAIN")) |
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# Get bytecode from a contract address |
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elif args.address: |
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address = args.address |
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if not re.match(r'0x[a-fA-F0-9]{40}', args.address): |
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exitWithError(args.outform, "Invalid contract address. Expected format is '0x...'.") |
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try: |
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code = eth.eth_getCode(args.address) |
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except FileNotFoundError as e: |
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exitWithError(args.outform, "IPC error: " + str(e)) |
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except ConnectionError as e: |
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exitWithError(args.outform, "Could not connect to RPC server. Make sure that your node is running and that RPC parameters are set correctly.") |
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except Exception as e: |
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exitWithError(args.outform, "IPC / RPC error: " + str(e)) |
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else: |
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if code == "0x" or code == "0x0": |
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exitWithError(args.outform, "Received an empty response from eth_getCode. Check the contract address and verify that you are on the correct chain.") |
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else: |
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contracts.append(ETHContract(code, name=args.address)) |
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|
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# Compile Solidity source file(s) |
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|
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elif args.solidity_file: |
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address = util.get_indexed_address(0) |
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if args.graph and len(args.solidity_file) > 1: |
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exitWithError(args.outform, "Cannot generate call graphs from multiple input files. Please do it one at a time.") |
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|
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for file in args.solidity_file: |
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if ":" in file: |
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file, contract_name = file.split(":") |
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else: |
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contract_name = None |
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|
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file = os.path.expanduser(file) |
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|
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try: |
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signatures.add_signatures_from_file(file, sigs) |
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contract = SolidityContract(file, contract_name, solc_args=args.solc_args) |
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logging.info("Analyzing contract %s:%s" % (file, contract.name)) |
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except FileNotFoundError: |
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exitWithError(args.outform, "Input file not found: " + file) |
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except CompilerError as e: |
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exitWithError(args.outform, e) |
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except NoContractFoundError: |
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logging.info("The file " + file + " does not contain a compilable contract.") |
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else: |
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contracts.append(contract) |
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|
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# Save updated function signatures |
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with open(signatures_file, 'w') as f: |
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json.dump(sigs, f) |
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|
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else: |
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exitWithError(args.outform, "No input bytecode. Please provide EVM code via -c BYTECODE, -a ADDRESS, or -i SOLIDITY_FILES") |
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|
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# Commands |
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|
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if args.storage: |
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if not args.address: |
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exitWithError(args.outform, "To read storage, provide the address of a deployed contract with the -a option.") |
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else: |
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(position, length, mappings) = (0, 1, []) |
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try: |
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params = args.storage.split(",") |
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if params[0] == "mapping": |
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if len(params) < 3: |
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exitWithError(args.outform, "Invalid number of parameters.") |
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position = int(params[1]) |
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position_formatted = utils.zpad(utils.int_to_big_endian(position), 32) |
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for i in range(2, len(params)): |
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key = bytes(params[i], 'utf8') |
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key_formatted = utils.rzpad(key, 32) |
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mappings.append(int.from_bytes(utils.sha3(key_formatted + position_formatted), byteorder='big')) |
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|
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length = len(mappings) |
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if length == 1: |
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position = mappings[0] |
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|
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else: |
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if len(params) >= 4: |
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exitWithError(args.outform, "Invalid number of parameters.") |
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|
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if len(params) >= 1: |
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position = int(params[0]) |
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if len(params) >= 2: |
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length = int(params[1]) |
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if len(params) == 3 and params[2] == "array": |
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position_formatted = utils.zpad(utils.int_to_big_endian(position), 32) |
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position = int.from_bytes(utils.sha3(position_formatted), byteorder='big') |
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|
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except ValueError: |
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exitWithError(args.outform, "Invalid storage index. Please provide a numeric value.") |
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|
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try: |
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if length == 1: |
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print("{}: {}".format(position, eth.eth_getStorageAt(args.address, position))) |
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else: |
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if len(mappings) > 0: |
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for i in range(0, len(mappings)): |
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position = mappings[i] |
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print("{}: {}".format(hex(position), eth.eth_getStorageAt(args.address, position))) |
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else: |
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for i in range(position, position + length): |
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print("{}: {}".format(hex(i), eth.eth_getStorageAt(args.address, i))) |
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except FileNotFoundError as e: |
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exitWithError(args.outform, "IPC error: " + str(e)) |
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except ConnectionError as e: |
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exitWithError(args.outform, "Could not connect to RPC server. Make sure that your node is running and that RPC parameters are set correctly.") |
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|
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|
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elif args.disassemble: |
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easm_text = contracts[0].get_easm() |
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sys.stdout.write(easm_text) |
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|
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|
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elif args.graph or args.fire_lasers: |
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if not contracts: |
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exitWithError(args.outform, "input files do not contain any valid contracts") |
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|
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if args.graph: |
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if args.dynld: |
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sym = SymExecWrapper(contracts[0], address, dynloader=DynLoader(eth), max_depth=args.max_depth) |
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else: |
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sym = SymExecWrapper(contracts[0], address, max_depth=args.max_depth) |
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|
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html = generate_graph(sym, physics=args.enable_physics, phrackify=args.phrack) |
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|
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try: |
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with open(args.graph, "w") as f: |
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f.write(html) |
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except Exception as e: |
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exitWithError(args.outform, "Error saving graph: " + str(e)) |
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|
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else: |
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all_issues = [] |
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for contract in contracts: |
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if args.dynld: |
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sym = SymExecWrapper(contract, address, dynloader=DynLoader(eth), max_depth=args.max_depth) |
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else: |
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sym = SymExecWrapper(contract, address, max_depth=args.max_depth) |
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|
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if args.modules: |
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issues = fire_lasers(sym, args.modules.split(",")) |
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else: |
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issues = fire_lasers(sym) |
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|
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if type(contract) == SolidityContract: |
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for issue in issues: |
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issue.add_code_info(contract) |
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|
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all_issues += issues |
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|
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# Finally, output the results |
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report = Report(args.verbose_report) |
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for issue in all_issues: |
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report.append_issue(issue) |
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|
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outputs = { |
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'json': report.as_json(), |
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'text': report.as_text() or "The analysis was completed successfully. No issues were detected.", |
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'markdown': report.as_markdown() or "The analysis was completed successfully. No issues were detected." |
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} |
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print(outputs[args.outform]) |
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|
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elif args.statespace_json: |
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if not contracts: |
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exitWithError(args.outform, "input files do not contain any valid contracts") |
||||
|
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if args.dynld: |
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sym = SymExecWrapper(contracts[0], address, dynloader=DynLoader(eth), max_depth=args.max_depth) |
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else: |
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sym = SymExecWrapper(contracts[0], address, max_depth=args.max_depth) |
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|
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try: |
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with open(args.statespace_json, "w") as f: |
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json.dump(get_serializable_statespace(sym), f) |
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except Exception as e: |
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exitWithError(args.outform, "Error saving json: " + str(e)) |
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|
||||
else: |
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parser.print_help() |
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import mythril.interfaces.cli |
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|
||||
if __name__ == "__main__": |
||||
main() |
||||
|
||||
mythril.interfaces.cli.main() |
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|
||||
@ -1,8 +1,19 @@ |
||||
class CompilerError(Exception): |
||||
class MythrilBaseException(Exception): |
||||
pass |
||||
|
||||
class UnsatError(Exception): |
||||
|
||||
class CompilerError(MythrilBaseException): |
||||
pass |
||||
|
||||
class NoContractFoundError(Exception): |
||||
|
||||
class UnsatError(MythrilBaseException): |
||||
pass |
||||
|
||||
|
||||
class NoContractFoundError(MythrilBaseException): |
||||
pass |
||||
|
||||
|
||||
class CriticalError(MythrilBaseException): |
||||
pass |
||||
|
||||
|
||||
@ -0,0 +1,232 @@ |
||||
#!/usr/bin/env python3 |
||||
# -*- coding: UTF-8 -*- |
||||
"""mythril.py: Bug hunting on the Ethereum blockchain |
||||
|
||||
http://www.github.com/b-mueller/mythril |
||||
""" |
||||
|
||||
import logging |
||||
import json |
||||
import sys |
||||
import argparse |
||||
|
||||
# logging.basicConfig(level=logging.DEBUG) |
||||
|
||||
from mythril.exceptions import CriticalError |
||||
from mythril.mythril import Mythril |
||||
|
||||
|
||||
def exit_with_error(format, message): |
||||
if format == 'text' or format == 'markdown': |
||||
print(message) |
||||
else: |
||||
result = {'success': False, 'error': str(message), 'issues': []} |
||||
print(json.dumps(result)) |
||||
sys.exit() |
||||
|
||||
|
||||
def main(): |
||||
parser = argparse.ArgumentParser(description='Security analysis of Ethereum smart contracts') |
||||
parser.add_argument("solidity_file", nargs='*') |
||||
|
||||
commands = parser.add_argument_group('commands') |
||||
commands.add_argument('-g', '--graph', help='generate a control flow graph', metavar='OUTPUT_FILE') |
||||
commands.add_argument('-x', '--fire-lasers', action='store_true', |
||||
help='detect vulnerabilities, use with -c, -a or solidity file(s)') |
||||
commands.add_argument('-t', '--truffle', action='store_true', |
||||
help='analyze a truffle project (run from project dir)') |
||||
commands.add_argument('-d', '--disassemble', action='store_true', help='print disassembly') |
||||
commands.add_argument('-j', '--statespace-json', help='dumps the statespace json', metavar='OUTPUT_FILE') |
||||
|
||||
inputs = parser.add_argument_group('input arguments') |
||||
inputs.add_argument('-c', '--code', help='hex-encoded bytecode string ("6060604052...")', metavar='BYTECODE') |
||||
inputs.add_argument('-a', '--address', help='pull contract from the blockchain', metavar='CONTRACT_ADDRESS') |
||||
inputs.add_argument('-l', '--dynld', action='store_true', help='auto-load dependencies from the blockchain') |
||||
|
||||
outputs = parser.add_argument_group('output formats') |
||||
outputs.add_argument('-o', '--outform', choices=['text', 'markdown', 'json'], default='text', |
||||
help='report output format', metavar='<text/json>') |
||||
outputs.add_argument('--verbose-report', action='store_true', help='Include debugging information in report') |
||||
|
||||
database = parser.add_argument_group('local contracts database') |
||||
database.add_argument('--init-db', action='store_true', help='initialize the contract database') |
||||
database.add_argument('-s', '--search', help='search the contract database', metavar='EXPRESSION') |
||||
|
||||
utilities = parser.add_argument_group('utilities') |
||||
utilities.add_argument('--hash', help='calculate function signature hash', metavar='SIGNATURE') |
||||
utilities.add_argument('--storage', help='read state variables from storage index, use with -a', |
||||
metavar='INDEX,NUM_SLOTS,[array] / mapping,INDEX,[KEY1, KEY2...]') |
||||
utilities.add_argument('--solv', |
||||
help='specify solidity compiler version. If not present, will try to install it (Experimental)', |
||||
metavar='SOLV') |
||||
|
||||
options = parser.add_argument_group('options') |
||||
options.add_argument('-m', '--modules', help='Comma-separated list of security analysis modules', metavar='MODULES') |
||||
options.add_argument('--max-depth', type=int, default=12, help='Maximum recursion depth for symbolic execution') |
||||
options.add_argument('--solc-args', help='Extra arguments for solc') |
||||
options.add_argument('--phrack', action='store_true', help='Phrack-style call graph') |
||||
options.add_argument('--enable-physics', action='store_true', help='enable graph physics simulation') |
||||
options.add_argument('-v', type=int, help='log level (0-2)', metavar='LOG_LEVEL') |
||||
options.add_argument('--leveldb', help='enable direct leveldb access operations', metavar='LEVELDB_PATH') |
||||
|
||||
rpc = parser.add_argument_group('RPC options') |
||||
rpc.add_argument('-i', action='store_true', help='Preset: Infura Node service (Mainnet)') |
||||
rpc.add_argument('--rpc', help='custom RPC settings', metavar='HOST:PORT / ganache / infura-[network_name]') |
||||
rpc.add_argument('--rpctls', type=bool, default=False, help='RPC connection over TLS') |
||||
rpc.add_argument('--ipc', action='store_true', help='Connect via local IPC') |
||||
|
||||
# Get config values |
||||
|
||||
args = parser.parse_args() |
||||
|
||||
# -- args sanity checks -- |
||||
# Detect unsupported combinations of command line args |
||||
|
||||
if args.dynld and not args.address: |
||||
exit_with_error(args.outform, "Dynamic loader can be used in on-chain analysis mode only (-a).") |
||||
|
||||
# Parse cmdline args |
||||
|
||||
if not (args.search or args.init_db or args.hash or args.disassemble or args.graph or args.fire_lasers |
||||
or args.storage or args.truffle or args.statespace_json): |
||||
parser.print_help() |
||||
sys.exit() |
||||
|
||||
if args.v: |
||||
if 0 <= args.v < 3: |
||||
logging.basicConfig(level=[logging.NOTSET, logging.INFO, logging.DEBUG][args.v]) |
||||
else: |
||||
exit_with_error(args.outform, "Invalid -v value, you can find valid values in usage") |
||||
|
||||
# -- commands -- |
||||
if args.hash: |
||||
print(Mythril.hash_for_function_signature(args.hash)) |
||||
sys.exit() |
||||
|
||||
|
||||
try: |
||||
# the mythril object should be our main interface |
||||
#init_db = None, infura = None, rpc = None, rpctls = None, ipc = None, |
||||
#solc_args = None, dynld = None, max_recursion_depth = 12): |
||||
|
||||
|
||||
mythril = Mythril(solv=args.solv, dynld=args.dynld, |
||||
solc_args=args.solc_args) |
||||
|
||||
if args.leveldb: |
||||
# Open LevelDB if specified |
||||
mythril.set_db_leveldb(args.leveldb) |
||||
|
||||
elif (args.address or args.init_db) and not args.leveldb: |
||||
# Establish RPC/IPC connection if necessary |
||||
if args.i: |
||||
mythril.set_db_rpc_infura() |
||||
elif args.rpc: |
||||
mythril.set_db_rpc(rpc=args.rpc, rpctls=args.rpctls) |
||||
elif args.ipc: |
||||
mythril.set_db_ipc() |
||||
else: |
||||
mythril.set_db_rpc_localhost() |
||||
|
||||
if args.truffle: |
||||
try: |
||||
# not really pythonic atm. needs refactoring |
||||
mythril.analyze_truffle_project(args) |
||||
except FileNotFoundError: |
||||
print( |
||||
"Build directory not found. Make sure that you start the analysis from the project root, and that 'truffle compile' has executed successfully.") |
||||
sys.exit() |
||||
|
||||
elif args.search: |
||||
# Database search ops |
||||
mythril.search_db(args.search) |
||||
sys.exit() |
||||
|
||||
elif args.init_db: |
||||
mythril.init_db() |
||||
sys.exit() |
||||
|
||||
# Load / compile input contracts |
||||
address = None |
||||
|
||||
if args.code: |
||||
# Load from bytecode |
||||
address, _ = mythril.load_from_bytecode(args.code) |
||||
elif args.address: |
||||
# Get bytecode from a contract address |
||||
address, _ = mythril.load_from_address(args.address) |
||||
elif args.solidity_file: |
||||
# Compile Solidity source file(s) |
||||
if args.graph and len(args.solidity_file) > 1: |
||||
exit_with_error(args.outform, |
||||
"Cannot generate call graphs from multiple input files. Please do it one at a time.") |
||||
address, _ = mythril.load_from_solidity(args.solidity_file) # list of files |
||||
else: |
||||
exit_with_error(args.outform, |
||||
"No input bytecode. Please provide EVM code via -c BYTECODE, -a ADDRESS, or -i SOLIDITY_FILES") |
||||
|
||||
# Commands |
||||
|
||||
if args.storage: |
||||
if not args.address: |
||||
exit_with_error(args.outform, |
||||
"To read storage, provide the address of a deployed contract with the -a option.") |
||||
|
||||
storage = mythril.get_state_variable_from_storage(address=address, |
||||
params=[a.strip() for a in args.storage.strip().split(",")]) |
||||
print(storage) |
||||
|
||||
elif args.disassemble: |
||||
easm_text = mythril.contracts[0].get_easm() # or mythril.disassemble(mythril.contracts[0]) |
||||
sys.stdout.write(easm_text) |
||||
|
||||
elif args.graph or args.fire_lasers: |
||||
if not mythril.contracts: |
||||
exit_with_error(args.outform, "input files do not contain any valid contracts") |
||||
|
||||
if args.graph: |
||||
# dot this for all contracts or just the first? |
||||
for nr, contract in enumerate(mythril.contracts): |
||||
html = mythril.graph_html(contract, address=address, |
||||
enable_physics=args.enable_physics, phrackify=args.phrack, |
||||
max_depth=args.max_depth) |
||||
|
||||
try: |
||||
with open("graph_%s_%d_%s" % (args.graph, nr, contract.name), "w") as f: |
||||
f.write(html) |
||||
except Exception as e: |
||||
exit_with_error(args.outform, "Error saving graph: " + str(e)) |
||||
|
||||
else: |
||||
report = mythril.fire_lasers(address=address, |
||||
modules=[m.strip() for m in args.modules.strip().split(",")] if args.modules else [], |
||||
verbose_report=args.verbose_report, |
||||
max_depth=args.max_depth) |
||||
outputs = { |
||||
'json': report.as_json(), |
||||
'text': report.as_text() or "The analysis was completed successfully. No issues were detected.", |
||||
'markdown': report.as_markdown() or "The analysis was completed successfully. No issues were detected." |
||||
} |
||||
print(outputs[args.outform]) |
||||
|
||||
elif args.statespace_json: |
||||
if not mythril.contracts: |
||||
exit_with_error(args.outform, "input files do not contain any valid contracts") |
||||
|
||||
for nr, contract_statespace in enumerate(mythril.dump_statespaces(address=address, max_depth=args.max_depth)): |
||||
|
||||
contract, statespace = contract_statespace |
||||
try: |
||||
with open("%s_%d_%s.json" % (args.statespace_json, nr, contract.name), "w") as f: |
||||
json.dump(statespace, f) |
||||
except Exception as e: |
||||
exit_with_error(args.outform, "Error saving json: " + str(e)) |
||||
|
||||
else: |
||||
parser.print_help() |
||||
|
||||
except CriticalError as ce: |
||||
exit_with_error(args.outform, str(ce)) |
||||
|
||||
if __name__ == "__main__": |
||||
main() |
||||
@ -0,0 +1,398 @@ |
||||
#!/usr/bin/env python3 |
||||
# -*- coding: UTF-8 -*- |
||||
"""mythril.py: Bug hunting on the Ethereum blockchain |
||||
|
||||
http://www.github.com/b-mueller/mythril |
||||
""" |
||||
|
||||
import logging |
||||
import json |
||||
import os |
||||
import re |
||||
|
||||
from ethereum import utils |
||||
from solc.exceptions import SolcError |
||||
import solc |
||||
|
||||
from mythril.ether import util |
||||
from mythril.ether.contractstorage import get_persistent_storage |
||||
from mythril.ether.ethcontract import ETHContract |
||||
from mythril.ether.soliditycontract import SolidityContract |
||||
from mythril.rpc.client import EthJsonRpc |
||||
from mythril.ipc.client import EthIpc |
||||
from mythril.rpc.exceptions import ConnectionError |
||||
from mythril.support import signatures |
||||
from mythril.support.truffle import analyze_truffle_project |
||||
from mythril.support.loader import DynLoader |
||||
from mythril.exceptions import CompilerError, NoContractFoundError, CriticalError |
||||
from mythril.analysis.symbolic import SymExecWrapper |
||||
from mythril.analysis.callgraph import generate_graph |
||||
from mythril.analysis.traceexplore import get_serializable_statespace |
||||
from mythril.analysis.security import fire_lasers |
||||
from mythril.analysis.report import Report |
||||
from mythril.leveldb.client import EthLevelDB |
||||
|
||||
|
||||
# logging.basicConfig(level=logging.DEBUG) |
||||
|
||||
class Mythril(object): |
||||
""" |
||||
Mythril main interface class. |
||||
|
||||
1. create mythril object |
||||
2. set rpc or leveldb interface if needed |
||||
3. load contracts (from solidity, bytecode, address) |
||||
4. fire_lasers |
||||
|
||||
Example: |
||||
mythril = Mythril() |
||||
mythril.set_db_rpc_infura() |
||||
|
||||
# (optional) other db adapters |
||||
mythril.set_db_rpc(args) |
||||
mythril.set_db_ipc() |
||||
mythril.set_db_rpc_localhost() |
||||
|
||||
# (optional) other func |
||||
mythril.analyze_truffle_project(args) |
||||
mythril.search_db(args) |
||||
mythril.init_db() |
||||
|
||||
# load contract |
||||
mythril.load_from_bytecode(bytecode) |
||||
mythril.load_from_address(address) |
||||
mythril.load_from_solidity(solidity_file) |
||||
|
||||
# analyze |
||||
print(mythril.fire_lasers(args).as_text()) |
||||
|
||||
# (optional) graph |
||||
for contract in mythril.contracts: |
||||
print(mythril.graph_html(args)) # prints html or save it to file |
||||
|
||||
# (optional) other funcs |
||||
mythril.dump_statespaces(args) |
||||
mythril.disassemble(contract) |
||||
mythril.get_state_variable_from_storage(args) |
||||
|
||||
""" |
||||
|
||||
|
||||
def __init__(self, solv=None, |
||||
solc_args=None, dynld=False): |
||||
|
||||
self.solv = solv |
||||
self.solc_args = solc_args |
||||
self.dynld = dynld |
||||
|
||||
self.mythril_dir = self._init_mythril_dir() |
||||
self.signatures_file, self.sigs = self._init_signatures() |
||||
self.solc_binary = self._init_solc_binary(solv) |
||||
|
||||
self.eth = None |
||||
self.ethDb = None |
||||
self.dbtype = None # track type of db (rpc,ipc,leveldb) used |
||||
|
||||
self.contracts = [] # loaded contracts |
||||
|
||||
def _init_mythril_dir(self): |
||||
try: |
||||
mythril_dir = os.environ['MYTHRIL_DIR'] |
||||
except KeyError: |
||||
mythril_dir = os.path.join(os.path.expanduser('~'), ".mythril") |
||||
|
||||
# Initialize data directory and signature database |
||||
|
||||
if not os.path.exists(mythril_dir): |
||||
logging.info("Creating mythril data directory") |
||||
os.mkdir(mythril_dir) |
||||
return mythril_dir |
||||
|
||||
def _init_signatures(self): |
||||
|
||||
# If no function signature file exists, create it. Function signatures from Solidity source code are added automatically. |
||||
|
||||
signatures_file = os.path.join(self.mythril_dir, 'signatures.json') |
||||
|
||||
sigs = {} |
||||
if not os.path.exists(signatures_file): |
||||
logging.info("No signature database found. Creating empty database: " + signatures_file + "\n" + |
||||
"Consider replacing it with the pre-initialized database at https://raw.githubusercontent.com/ConsenSys/mythril/master/signatures.json") |
||||
with open(signatures_file, 'a') as f: |
||||
json.dump({}, f) |
||||
|
||||
with open(signatures_file) as f: |
||||
try: |
||||
sigs = json.load(f) |
||||
except json.JSONDecodeError as e: |
||||
raise CriticalError("Invalid JSON in signatures file " + signatures_file + "\n" + str(e)) |
||||
return signatures_file, sigs |
||||
|
||||
def _update_signatures(self, jsonsigs): |
||||
# Save updated function signatures |
||||
with open(self.signatures_file, 'w') as f: |
||||
json.dump(jsonsigs, f) |
||||
|
||||
self.sigs = jsonsigs |
||||
|
||||
def analyze_truffle_project(self, *args, **kwargs): |
||||
return analyze_truffle_project(*args, **kwargs) # just passthru for now |
||||
|
||||
def _init_solc_binary(self, version): |
||||
# Figure out solc binary and version |
||||
# Only proper versions are supported. No nightlies, commits etc (such as available in remix) |
||||
|
||||
if version: |
||||
# tried converting input to semver, seemed not necessary so just slicing for now |
||||
if version == str(solc.main.get_solc_version())[:6]: |
||||
logging.info('Given version matches installed version') |
||||
try: |
||||
solc_binary = os.environ['SOLC'] |
||||
except KeyError: |
||||
solc_binary = 'solc' |
||||
else: |
||||
if util.solc_exists(version): |
||||
logging.info('Given version is already installed') |
||||
else: |
||||
try: |
||||
solc.install_solc('v' + version) |
||||
except SolcError: |
||||
raise CriticalError("There was an error when trying to install the specified solc version") |
||||
|
||||
solc_binary = os.path.join(os.environ['HOME'], ".py-solc/solc-v" + version, "bin/solc") |
||||
logging.info("Setting the compiler to " + str(solc_binary)) |
||||
else: |
||||
try: |
||||
solc_binary = os.environ['SOLC'] |
||||
except KeyError: |
||||
solc_binary = 'solc' |
||||
return solc_binary |
||||
|
||||
def set_db_leveldb(self, leveldb): |
||||
self.ethDb = EthLevelDB(leveldb) |
||||
self.eth = self.ethDb |
||||
self.dbtype = "leveldb" |
||||
return self.eth |
||||
|
||||
def set_db_rpc_infura(self): |
||||
self.eth = EthJsonRpc('mainnet.infura.io', 443, True) |
||||
logging.info("Using INFURA for RPC queries") |
||||
self.dbtype = "rpc" |
||||
|
||||
def set_db_rpc(self, rpc=None, rpctls=False): |
||||
if rpc == 'ganache': |
||||
rpcconfig = ('localhost', 7545, False) |
||||
else: |
||||
m = re.match(r'infura-(.*)', rpc) |
||||
if m and m.group(1) in ['mainnet', 'rinkeby', 'kovan', 'ropsten']: |
||||
rpcconfig = (m.group(1) + '.infura.io', 443, True) |
||||
else: |
||||
try: |
||||
host, port = rpc.split(":") |
||||
rpcconfig = (host, int(port), rpctls) |
||||
except ValueError: |
||||
raise CriticalError("Invalid RPC argument, use 'ganache', 'infura-[network]' or 'HOST:PORT'") |
||||
|
||||
if rpcconfig: |
||||
self.eth = EthJsonRpc(rpcconfig[0], int(rpcconfig[1]), rpcconfig[2]) |
||||
self.dbtype = "rpc" |
||||
logging.info("Using RPC settings: %s" % str(rpcconfig)) |
||||
else: |
||||
raise CriticalError("Invalid RPC settings, check help for details.") |
||||
|
||||
def set_db_ipc(self): |
||||
try: |
||||
self.eth = EthIpc() |
||||
self.dbtype = "ipc" |
||||
except Exception as e: |
||||
raise CriticalError( |
||||
"IPC initialization failed. Please verify that your local Ethereum node is running, or use the -i flag to connect to INFURA. \n" + str( |
||||
e)) |
||||
|
||||
def set_db_rpc_localhost(self): |
||||
self.eth = EthJsonRpc('localhost', 8545) |
||||
self.dbtype = "rpc" |
||||
logging.info("Using default RPC settings: http://localhost:8545") |
||||
|
||||
def search_db(self, search): |
||||
|
||||
def search_callback(code_hash, code, addresses, balances): |
||||
print("Matched contract with code hash " + code_hash) |
||||
for i in range(0, len(addresses)): |
||||
print("Address: " + addresses[i] + ", balance: " + str(balances[i])) |
||||
|
||||
contract_storage, _ = get_persistent_storage(self.mythril_dir) |
||||
try: |
||||
if self.dbtype=="leveldb": |
||||
contract_storage.search(search, search_callback) |
||||
else: |
||||
self.ethDB.search(search, search_callback) |
||||
except SyntaxError: |
||||
raise CriticalError("Syntax error in search expression.") |
||||
|
||||
def init_db(self): |
||||
contract_storage, _ = get_persistent_storage(self.mythril_dir) |
||||
try: |
||||
contract_storage.initialize(self.eth) |
||||
except FileNotFoundError as e: |
||||
raise CriticalError("Error syncing database over IPC: " + str(e)) |
||||
except ConnectionError as e: |
||||
raise CriticalError("Could not connect to RPC server. Make sure that your node is running and that RPC parameters are set correctly.") |
||||
|
||||
def load_from_bytecode(self, code): |
||||
address = util.get_indexed_address(0) |
||||
self.contracts.append(ETHContract(code, name="MAIN")) |
||||
return address, self.contracts[-1] # return address and contract object |
||||
|
||||
def load_from_address(self, address): |
||||
if not re.match(r'0x[a-fA-F0-9]{40}', address): |
||||
raise CriticalError("Invalid contract address. Expected format is '0x...'.") |
||||
|
||||
try: |
||||
code = self.eth.eth_getCode(address) |
||||
except FileNotFoundError as e: |
||||
raise CriticalError("IPC error: " + str(e)) |
||||
except ConnectionError as e: |
||||
raise CriticalError("Could not connect to RPC server. Make sure that your node is running and that RPC parameters are set correctly.") |
||||
except Exception as e: |
||||
raise CriticalError("IPC / RPC error: " + str(e)) |
||||
else: |
||||
if code == "0x" or code == "0x0": |
||||
raise CriticalError("Received an empty response from eth_getCode. Check the contract address and verify that you are on the correct chain.") |
||||
else: |
||||
self.contracts.append(ETHContract(code, name=address)) |
||||
return address, self.contracts[-1] # return address and contract object |
||||
|
||||
def load_from_solidity(self, solidity_files): |
||||
""" |
||||
UPDATES self.sigs! |
||||
:param solidity_files: |
||||
:return: |
||||
""" |
||||
address = util.get_indexed_address(0) |
||||
contracts = [] |
||||
for file in solidity_files: |
||||
if ":" in file: |
||||
file, contract_name = file.split(":") |
||||
else: |
||||
contract_name = None |
||||
|
||||
file = os.path.expanduser(file) |
||||
|
||||
try: |
||||
signatures.add_signatures_from_file(file, self.sigs) |
||||
contract = SolidityContract(file, contract_name, solc_args=self.solc_args) |
||||
logging.info("Analyzing contract %s:%s" % (file, contract.name)) |
||||
except FileNotFoundError: |
||||
raise CriticalError("Input file not found: " + file) |
||||
except CompilerError as e: |
||||
raise CriticalError(e) |
||||
except NoContractFoundError: |
||||
logging.info("The file " + file + " does not contain a compilable contract.") |
||||
else: |
||||
self.contracts.append(contract) |
||||
contracts.append(contract) |
||||
|
||||
self._update_signatures(self.sigs) |
||||
return address, contracts |
||||
|
||||
def dump_statespaces(self, contracts=None, address=None, max_depth=12): |
||||
statespaces = [] |
||||
|
||||
for contract in (contracts or self.contracts): |
||||
sym = SymExecWrapper(contract, address, |
||||
dynloader=DynLoader(self.eth) if self.dynld else None, |
||||
max_depth=max_depth) |
||||
statespaces.append((contract, get_serializable_statespace(sym))) |
||||
|
||||
return statespaces |
||||
|
||||
def graph_html(self, contract, address, max_depth=12, enable_physics=False, phrackify=False): |
||||
sym = SymExecWrapper(contract, address, |
||||
dynloader=DynLoader(self.eth) if self.dynld else None, |
||||
max_depth=max_depth) |
||||
return generate_graph(sym, physics=enable_physics, phrackify=phrackify) |
||||
|
||||
def fire_lasers(self, contracts=None, address=None, |
||||
modules=None, |
||||
verbose_report=False, max_depth=12): |
||||
|
||||
all_issues = [] |
||||
for contract in (contracts or self.contracts): |
||||
|
||||
sym = SymExecWrapper(contract, address, |
||||
dynloader=DynLoader(self.eth) if self.dynld else None, |
||||
max_depth=max_depth) |
||||
|
||||
issues = fire_lasers(sym, modules) |
||||
|
||||
if type(contract) == SolidityContract: |
||||
for issue in issues: |
||||
issue.add_code_info(contract) |
||||
|
||||
all_issues += issues |
||||
|
||||
# Finally, output the results |
||||
report = Report(verbose_report) |
||||
for issue in all_issues: |
||||
report.append_issue(issue) |
||||
|
||||
return report |
||||
|
||||
def get_state_variable_from_storage(self, address, params=[]): |
||||
(position, length, mappings) = (0, 1, []) |
||||
try: |
||||
if params[0] == "mapping": |
||||
if len(params) < 3: |
||||
raise CriticalError("Invalid number of parameters.") |
||||
position = int(params[1]) |
||||
position_formatted = utils.zpad(utils.int_to_big_endian(position), 32) |
||||
for i in range(2, len(params)): |
||||
key = bytes(params[i], 'utf8') |
||||
key_formatted = utils.rzpad(key, 32) |
||||
mappings.append(int.from_bytes(utils.sha3(key_formatted + position_formatted), byteorder='big')) |
||||
|
||||
length = len(mappings) |
||||
if length == 1: |
||||
position = mappings[0] |
||||
|
||||
else: |
||||
if len(params) >= 4: |
||||
raise CriticalError("Invalid number of parameters.") |
||||
|
||||
if len(params) >= 1: |
||||
position = int(params[0]) |
||||
if len(params) >= 2: |
||||
length = int(params[1]) |
||||
if len(params) == 3 and params[2] == "array": |
||||
position_formatted = utils.zpad(utils.int_to_big_endian(position), 32) |
||||
position = int.from_bytes(utils.sha3(position_formatted), byteorder='big') |
||||
|
||||
except ValueError: |
||||
raise CriticalError("Invalid storage index. Please provide a numeric value.") |
||||
|
||||
outtxt = [] |
||||
|
||||
try: |
||||
if length == 1: |
||||
outtxt.append("{}: {}".format(position, self.eth.eth_getStorageAt(address, position))) |
||||
else: |
||||
if len(mappings) > 0: |
||||
for i in range(0, len(mappings)): |
||||
position = mappings[i] |
||||
outtxt.append("{}: {}".format(hex(position), self.eth.eth_getStorageAt(address, position))) |
||||
else: |
||||
for i in range(position, position + length): |
||||
outtxt.append("{}: {}".format(hex(i), self.eth.eth_getStorageAt(address, i))) |
||||
except FileNotFoundError as e: |
||||
raise CriticalError("IPC error: " + str(e)) |
||||
except ConnectionError as e: |
||||
raise CriticalError("Could not connect to RPC server. Make sure that your node is running and that RPC parameters are set correctly.") |
||||
return '\n'.join(outtxt) |
||||
|
||||
def disassemble(self, contract): |
||||
return contract.get_easm() |
||||
|
||||
@staticmethod |
||||
def hash_for_function_signature(sig): |
||||
return "0x%s" % utils.sha3(sig)[:4].hex() |
||||
Loading…
Reference in new issue