resolve merge conflicts

README.md

@@ -2,16 +2,16 @@
 [![Discord](https://img.shields.io/discord/481002907366588416.svg)](https://discord.gg/E3YrVtG)
 [![PyPI](https://badge.fury.io/py/mythril.svg)](https://pypi.python.org/pypi/mythril)
 ![Master Build Status](https://img.shields.io/circleci/project/github/ConsenSys/mythril/master.svg)
-[![Waffle.io - Columns and their card count](https://badge.waffle.io/ConsenSys/mythril.svg?columns=all)](https://waffle.io/ConsenSys/mythril)
+[![Waffle.io - Columns and their card count](https://badge.waffle.io/ConsenSys/mythril.svg?columns=In%20Progress)](https://waffle.io/ConsenSys/mythril)
 [![Sonarcloud - Maintainability](https://sonarcloud.io/api/project_badges/measure?project=mythril&metric=sqale_rating)](https://sonarcloud.io/dashboard?id=mythril)
-
+[![PyPI Statistics](https://pypistats.com/badge/mythril.svg)](https://pypistats.com/package/mythril)
 <img height="120px" align="right" src="https://github.com/ConsenSys/mythril/raw/master/static/mythril.png" alt="mythril" />
 
 Mythril OSS is the classic security analysis tool for Ethereum smart contracts. It uses concolic analysis, taint analysis and control flow checking to detect a variety of security vulnerabilities. 
 
 Whether you want to contribute, need support, or want to learn what we have cooking for the future, our [Discord server](https://discord.gg/E3YrVtG) will serve your needs!
 
-Oh and by the way, we're now building a whole security tools ecosystem with [Mythril Platform](https://mythril.ai). You should definitely check that out as well.
+Oh and by the way, we're building an easy-to-use SaaS solution and tools ecosystem for Ethereum developers called [Mythril Platform](https://mythril.ai). You should definitely check that out as well.
 
 ## Installation and setup
 
@@ -35,6 +35,10 @@ Instructions for using the 'myth' tool are found on the [Wiki](https://github.co
 
 For support or general discussions please join the Mythril community on [Discord](https://discord.gg/E3YrVtG).
 
+## Vulnerability Remediation
+
+Visit the [Smart Contract Vulnerability Classification Registry](https://smartcontractsecurity.github.io/SWC-registry/) to find detailed information and remediation guidance for the vulnerabilities reported.
+
 ## Presentations, papers and articles
 
 - [Analyzing Ethereum Smart Contracts for Vulnerabilities](https://hackernoon.com/scanning-ethereum-smart-contracts-for-vulnerabilities-b5caefd995df)

mythril/analysis/modules/external_calls.py

@@ -16,8 +16,9 @@ Check for call.value()() to external addresses
 MAX_SEARCH_DEPTH = 64
 
 
-def search_children(statespace, node, start_index=0, depth=0, results=[]):
-
+def search_children(statespace, node, start_index=0, depth=0, results=None):
+    if results is None:
+        results = []
     logging.debug("SEARCHING NODE %d", node.uid)
 
     if depth < MAX_SEARCH_DEPTH:

mythril/analysis/modules/integer.py

@@ -214,7 +214,7 @@ def _check_sstore(state, taint_result):
     return taint_result.check(state, -2)
 
 
-def _search_children(statespace, node, expression, taint_result=None, constraint=[], index=0, depth=0, max_depth=64):
+def _search_children(statespace, node, expression, taint_result=None, constraint=None, index=0, depth=0, max_depth=64):
     """
     Checks the statespace for children states, with JUMPI or SSTORE instuctions,
     for dependency on expression
@@ -227,6 +227,9 @@ def _search_children(statespace, node, expression, taint_result=None, constraint
     :param max_depth: Max depth to explore
     :return: List of states that match the opcodes and are dependent on expression
     """
+    if constraint is None:
+        constraint = []
+
     logging.debug("SEARCHING NODE for usage of an overflowed variable %d", node.uid)
 
     if taint_result is None:

mythril/analysis/symbolic.py

@@ -9,9 +9,9 @@ from mythril.laser.ethereum.strategy.basic import DepthFirstSearchStrategy, Brea
 
 class SymExecWrapper:
 
-    '''
+    """
     Wrapper class for the LASER Symbolic virtual machine. Symbolically executes the code and does a bit of pre-analysis for convenience.
-    '''
+    """
 
     def __init__(self, contract, address, strategy, dynloader=None, max_depth=22,
                  execution_timeout=None, create_timeout=None):
@@ -67,7 +67,7 @@ class SymExecWrapper:
                                 # ignore prebuilts
                                 continue
 
-                        if (meminstart.type == VarType.CONCRETE and meminsz.type == VarType.CONCRETE):
+                        if meminstart.type == VarType.CONCRETE and meminsz.type == VarType.CONCRETE:
                             self.calls.append(Call(self.nodes[key], state, state_index, op, to, gas, value, state.mstate.memory[meminstart.val:meminsz.val * 4]))
                         else:
                             self.calls.append(Call(self.nodes[key], state, state_index, op, to, gas, value))
@@ -105,7 +105,7 @@ class SymExecWrapper:
                 taint = True
 
                 for constraint in s.node.constraints:
-                    if ("caller" in str(constraint)):
+                    if "caller" in str(constraint):
                         taint = False
                         break
 

mythril/analysis/traceexplore.py

@@ -81,7 +81,7 @@ def get_serializable_statespace(statespace):
 
     for edge in statespace.edges:
 
-        if (edge.condition is None):
+        if edge.condition is None:
             label = ""
         else:
 

mythril/ether/asm.py

@@ -42,9 +42,7 @@ def easm_to_instruction_list(easm):
             # Invalid code line
             continue
 
-        instruction = {}
-
-        instruction['opcode'] = m.group(1)
+        instruction = {'opcode': m.group(1)}
 
         if m.group(2):
             instruction['argument'] = m.group(2)[2:]
@@ -82,7 +80,7 @@ def find_opcode_sequence(pattern, instruction_list):
                     matched = False
                     break
 
-            if (matched):
+            if matched:
                 match_indexes.append(i)
 
     return match_indexes
@@ -101,12 +99,10 @@ def disassemble(bytecode):
 
     while addr < length:
 
-        instruction = {}
-
-        instruction['address'] = addr
+        instruction = {'address': addr}
 
         try:
-            if (sys.version_info > (3, 0)):
+            if sys.version_info > (3, 0):
                 opcode = opcodes[bytecode[addr]]
             else:
                 opcode = opcodes[ord(bytecode[addr])]

mythril/ether/ethcontract.py

@@ -8,14 +8,15 @@ class ETHContract(persistent.Persistent):
 
     def __init__(self, code, creation_code="", name="Unknown", enable_online_lookup=True):
         
-        self.creation_code = creation_code
-        self.name = name
-
         # Workaround: We currently do not support compile-time linking.
         # Dynamic contract addresses of the format __[contract-name]_____________ are replaced with a generic address
+        # Apply this for creation_code & code
 
+        creation_code = re.sub(r'(_+.*_+)', 'aa' * 20, creation_code)
         code = re.sub(r'(_+.*_+)', 'aa' * 20, code)
 
+        self.creation_code = creation_code
+        self.name = name
         self.code = code
         self.disassembly = Disassembly(code, enable_online_lookup=enable_online_lookup)
         self.creation_disassembly = Disassembly(creation_code, enable_online_lookup=enable_online_lookup)
@@ -49,7 +50,7 @@ class ETHContract(persistent.Persistent):
 
             m = re.match(r'^code#([a-zA-Z0-9\s,\[\]]+)#', token)
 
-            if (m):
+            if m:
                 if easm_code is None:
                     easm_code = self.get_easm()
 
@@ -59,7 +60,7 @@ class ETHContract(persistent.Persistent):
 
             m = re.match(r'^func#([a-zA-Z0-9\s_,(\\)\[\]]+)#$', token)
 
-            if (m):
+            if m:
 
                 sign_hash = "0x" + utils.sha3(m.group(1))[:4].hex()
 

mythril/ether/evm.py

@@ -47,13 +47,13 @@ def trace(code, calldata = ""):
 
 			m = re.match(r'.*stack=(\[.*?\])', line)
 				
-			if (m):
+			if m:
 
 				stackitems = re.findall(r'b\'(\d+)\'', m.group(1))
 
-				stack = "[";
+				stack = "["
 
-				if (len(stackitems)): 
+				if len(stackitems):
 
 					for i in range(0, len(stackitems) - 1):
 						stack += hex(int(stackitems[i]))	+ ", "
@@ -65,7 +65,7 @@ def trace(code, calldata = ""):
 			else:
 				stack = "[]"
 
-			if (re.match(r'^PUSH.*', op)):
+			if re.match(r'^PUSH.*', op):
 				val = re.search(r'pushvalue=(\d+)', line).group(1)
 				pushvalue = hex(int(val))
 				trace.append({'pc': pc, 'op': op, 'stack': stack, 'pushvalue': pushvalue})

mythril/ether/util.py

@@ -10,7 +10,7 @@ import json
 
 def safe_decode(hex_encoded_string):
 
-    if (hex_encoded_string.startswith("0x")):
+    if hex_encoded_string.startswith("0x"):
         return bytes.fromhex(hex_encoded_string[2:])
     else:
         return bytes.fromhex(hex_encoded_string)
@@ -18,10 +18,17 @@ def safe_decode(hex_encoded_string):
 
 def get_solc_json(file, solc_binary="solc", solc_args=None):
 
-    cmd = [solc_binary, "--combined-json", "bin,bin-runtime,srcmap,srcmap-runtime", '--allow-paths', "."]
+    cmd = [solc_binary, "--combined-json", "bin,bin-runtime,srcmap,srcmap-runtime"]
 
     if solc_args:
-        cmd.extend(solc_args.split(" "))
+        cmd.extend(solc_args.split())
+
+    if not "--allow-paths" in cmd:
+        cmd.extend(["--allow-paths", "."])
+    else:
+        for i, arg in enumerate(cmd):
+            if arg == "--allow-paths":
+                cmd[i + 1] += ",."
 
     cmd.append(file)
 

mythril/ethereum/interface/leveldb/accountindexing.py

@@ -34,9 +34,9 @@ class CountableList(object):
 
 
 class ReceiptForStorage(rlp.Serializable):
-    '''
+    """
     Receipt format stored in levelDB
-    '''
+    """
 
     fields = [
         ('state_root', binary),
@@ -50,9 +50,9 @@ class ReceiptForStorage(rlp.Serializable):
 
 
 class AccountIndexer(object):
-    '''
+    """
     Updates address index
-    '''
+    """
 
     def __init__(self, ethDB):
         self.db = ethDB
@@ -62,9 +62,9 @@ class AccountIndexer(object):
         self.updateIfNeeded()
 
     def get_contract_by_hash(self, contract_hash):
-        '''
+        """
         get mapped address by its hash, if not found try indexing
-        '''
+        """
         address = self.db.reader._get_address_by_hash(contract_hash)
         if address is not None:
             return address
@@ -74,9 +74,9 @@ class AccountIndexer(object):
         return self.db.reader._get_address_by_hash(contract_hash)
 
     def _process(self, startblock):
-        '''
+        """
         Processesing method
-        '''
+        """
         logging.debug("Processing blocks %d to %d" % (startblock, startblock + BATCH_SIZE))
 
         addresses = []
@@ -96,9 +96,9 @@ class AccountIndexer(object):
         return addresses
 
     def updateIfNeeded(self):
-        '''
+        """
         update address index
-        '''
+        """
         headBlock = self.db.reader._get_head_block()
         if headBlock is not None:
             # avoid restarting search if head block is same & we already initialized
@@ -128,7 +128,7 @@ class AccountIndexer(object):
         count = 0
         processed = 0
 
-        while (blockNum <= self.lastBlock):
+        while blockNum <= self.lastBlock:
             # leveldb cannot be accessed on multiple processes (not even readonly)
             # multithread version performs significantly worse than serial
             try:

mythril/ethereum/interface/leveldb/client.py

@@ -1,12 +1,12 @@
 import binascii
 import rlp
-from mythril.leveldb.accountindexing import CountableList
-from mythril.leveldb.accountindexing import ReceiptForStorage, AccountIndexer
+from mythril.ethereum.interface.leveldb.accountindexing import CountableList
+from mythril.ethereum.interface.leveldb.accountindexing import ReceiptForStorage, AccountIndexer
 import logging
 from ethereum import utils
 from ethereum.block import BlockHeader, Block
-from mythril.leveldb.state import State
-from mythril.leveldb.eth_db import ETH_DB
+from mythril.ethereum.interface.leveldb.state import State
+from mythril.ethereum.interface.leveldb.eth_db import ETH_DB
 from mythril.ether.ethcontract import ETHContract
 from mythril.exceptions import AddressNotFoundError
 
@@ -26,23 +26,23 @@ address_mapping_head_key = b'accountMapping'  # head (latest) number of indexed
 
 
 def _format_block_number(number):
-    '''
+    """
     formats block number to uint64 big endian
-    '''
+    """
     return utils.zpad(utils.int_to_big_endian(number), 8)
 
 
 def _encode_hex(v):
-    '''
+    """
     encodes hash as hex
-    '''
+    """
     return '0x' + utils.encode_hex(v)
 
 
 class LevelDBReader(object):
-    '''
+    """
     level db reading interface, can be used with snapshot
-    '''
+    """
 
     def __init__(self, db):
         self.db = db
@@ -50,34 +50,34 @@ class LevelDBReader(object):
         self.head_state = None
 
     def _get_head_state(self):
-        '''
+        """
         gets head state
-        '''
+        """
         if not self.head_state:
             root = self._get_head_block().state_root
             self.head_state = State(self.db, root)
         return self.head_state
 
     def _get_account(self, address):
-        '''
+        """
         gets account by address
-        '''
+        """
         state = self._get_head_state()
         account_address = binascii.a2b_hex(utils.remove_0x_head(address))
         return state.get_and_cache_account(account_address)
 
     def _get_block_hash(self, number):
-        '''
+        """
         gets block hash by block number
-        '''
+        """
         num = _format_block_number(number)
         hash_key = header_prefix + num + num_suffix
         return self.db.get(hash_key)
 
     def _get_head_block(self):
-        '''
+        """
         gets head block header
-        '''
+        """
         if not self.head_block_header:
             hash = self.db.get(head_header_key)
             num = self._get_block_number(hash)
@@ -91,38 +91,38 @@ class LevelDBReader(object):
         return self.head_block_header
 
     def _get_block_number(self, hash):
-        '''
+        """
         gets block number by hash
-        '''
+        """
         number_key = block_hash_prefix + hash
         return self.db.get(number_key)
 
     def _get_block_header(self, hash, num):
-        '''
+        """
         get block header by block header hash & number
-        '''
+        """
         header_key = header_prefix + num + hash
         block_header_data = self.db.get(header_key)
         header = rlp.decode(block_header_data, sedes=BlockHeader)
         return header
 
     def _get_address_by_hash(self, hash):
-        '''
+        """
         get mapped address by its hash
-        '''
+        """
         address_key = address_prefix + hash
         return self.db.get(address_key)
 
     def _get_last_indexed_number(self):
-        '''
+        """
         latest indexed block number
-        '''
+        """
         return self.db.get(address_mapping_head_key)
 
     def _get_block_receipts(self, hash, num):
-        '''
+        """
         get block transaction receipts by block header hash & number
-        '''
+        """
         number = _format_block_number(num)
         receipts_key = block_receipts_prefix + number + hash
         receipts_data = self.db.get(receipts_key)
@@ -131,44 +131,44 @@ class LevelDBReader(object):
 
 
 class LevelDBWriter(object):
-    '''
+    """
     level db writing interface
-    '''
+    """
 
     def __init__(self, db):
         self.db = db
         self.wb = None
 
     def _set_last_indexed_number(self, number):
-        '''
+        """
         sets latest indexed block number
-        '''
+        """
         return self.db.put(address_mapping_head_key, _format_block_number(number))
 
     def _start_writing(self):
-        '''
+        """
         start writing a batch
-        '''
+        """
         self.wb = self.db.write_batch()
 
     def _commit_batch(self):
-        '''
+        """
         commit batch
-        '''
+        """
         self.wb.write()
 
     def _store_account_address(self, address):
-        '''
+        """
         get block transaction receipts by block header hash & number
-        '''
+        """
         address_key = address_prefix + utils.sha3(address)
         self.wb.put(address_key, address)
 
 
 class EthLevelDB(object):
-    '''
+    """
     Go-Ethereum LevelDB client class
-    '''
+    """
 
     def __init__(self, path):
         self.path = path
@@ -177,9 +177,9 @@ class EthLevelDB(object):
         self.writer = LevelDBWriter(self.db)
 
     def get_contracts(self):
-        '''
+        """
         iterate through all contracts
-        '''
+        """
         for account in self.reader._get_head_state().get_all_accounts():
             if account.code is not None:
                 code = _encode_hex(account.code)
@@ -188,9 +188,9 @@ class EthLevelDB(object):
                 yield contract, account.address, account.balance
 
     def search(self, expression, callback_func):
-        '''
+        """
         searches through all contract accounts
-        '''
+        """
         cnt = 0
         indexer = AccountIndexer(self)
 
@@ -217,9 +217,9 @@ class EthLevelDB(object):
                 logging.info("Searched %d contracts" % cnt)
 
     def contract_hash_to_address(self, hash):
-        '''
+        """
         tries to find corresponding account address
-        '''
+        """
 
         address_hash = binascii.a2b_hex(utils.remove_0x_head(hash))
         indexer = AccountIndexer(self)
@@ -227,17 +227,17 @@ class EthLevelDB(object):
         return _encode_hex(indexer.get_contract_by_hash(address_hash))
 
     def eth_getBlockHeaderByNumber(self, number):
-        '''
+        """
         gets block header by block number
-        '''
+        """
         hash = self.reader._get_block_hash(number)
         block_number = _format_block_number(number)
         return self.reader._get_block_header(hash, block_number)
 
     def eth_getBlockByNumber(self, number):
-        '''
+        """
         gets block body by block number
-        '''
+        """
         block_hash = self.reader._get_block_hash(number)
         block_number = _format_block_number(number)
         body_key = body_prefix + block_number + block_hash
@@ -246,22 +246,22 @@ class EthLevelDB(object):
         return body
 
     def eth_getCode(self, address):
-        '''
+        """
         gets account code
-        '''
+        """
         account = self.reader._get_account(address)
         return _encode_hex(account.code)
 
     def eth_getBalance(self, address):
-        '''
+        """
         gets account balance
-        '''
+        """
         account = self.reader._get_account(address)
         return account.balance
 
     def eth_getStorageAt(self, address, position):
-        '''
+        """
         gets account storage data at position
-        '''
+        """
         account = self.reader._get_account(address)
         return _encode_hex(utils.zpad(utils.encode_int(account.get_storage_data(position)), 32))

mythril/ethereum/interface/leveldb/eth_db.py

@@ -3,27 +3,27 @@ from ethereum.db import BaseDB
 
 
 class ETH_DB(BaseDB):
-    '''
+    """
     adopts pythereum BaseDB using plyvel
-    '''
+    """
 
     def __init__(self, path):
         self.db = plyvel.DB(path)
 
     def get(self, key):
-        '''
+        """
         gets value for key
-        '''
+        """
         return self.db.get(key)
 
     def put(self, key, value):
-        '''
+        """
         puts value for key
-        '''
+        """
         self.db.put(key, value)
 
     def write_batch(self):
-        '''
+        """
         start writing a batch
-        '''
+        """
         return self.db.write_batch()

mythril/ethereum/interface/leveldb/state.py

@@ -32,9 +32,9 @@ STATE_DEFAULTS = {
 
 
 class Account(rlp.Serializable):
-    '''
+    """
     adjusted account from ethereum.state
-    '''
+    """
 
     fields = [
         ('nonce', big_endian_int),
@@ -57,15 +57,15 @@ class Account(rlp.Serializable):
 
     @property
     def code(self):
-        '''
+        """
         code rlp data
-        '''
+        """
         return self.db.get(self.code_hash)
 
     def get_storage_data(self, key):
-        '''
+        """
         get storage data
-        '''
+        """
         if key not in self.storage_cache:
             v = self.storage_trie.get(utils.encode_int32(key))
             self.storage_cache[key] = utils.big_endian_to_int(
@@ -74,24 +74,24 @@ class Account(rlp.Serializable):
 
     @classmethod
     def blank_account(cls, db, address, initial_nonce=0):
-        '''
+        """
         creates a blank account
-        '''
+        """
         db.put(BLANK_HASH, b'')
         o = cls(initial_nonce, 0, trie.BLANK_ROOT, BLANK_HASH, db, address)
         o.existent_at_start = False
         return o
 
     def is_blank(self):
-        '''
+        """
         checks if is a blank account
-        '''
+        """
         return self.nonce == 0 and self.balance == 0 and self.code_hash == BLANK_HASH
 
-class State():
-    '''
+class State:
+    """
     adjusted state from ethereum.state
-    '''
+    """
 
     def __init__(self, db, root):
         self.db = db
@@ -101,9 +101,9 @@ class State():
         self.cache = {}
 
     def get_and_cache_account(self, address):
-        '''
+        """
         gets and caches an account for an addres, creates blank if not found
-        '''
+        """
         if address in self.cache:
             return self.cache[address]
         rlpdata = self.secure_trie.get(address)
@@ -120,9 +120,9 @@ class State():
         return o
 
     def get_all_accounts(self):
-        '''
+        """
         iterates through trie to and yields non-blank leafs as accounts
-        '''
+        """
         for address_hash, rlpdata in self.secure_trie.trie.iter_branch():
             if rlpdata != trie.BLANK_NODE:
                 yield rlp.decode(rlpdata, Account, db=self.db, address=address_hash)

mythril/ethereum/interface/rpc/base_client.py

@@ -20,64 +20,64 @@ class BaseClient(object):
         pass
 
     def eth_coinbase(self):
-        '''
+        """
         https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_coinbase
 
         TESTED
-        '''
+        """
         return self._call('eth_coinbase')
 
     def eth_blockNumber(self):
-        '''
+        """
         https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_blocknumber
 
         TESTED
-        '''
+        """
         return hex_to_dec(self._call('eth_blockNumber'))
 
     def eth_getBalance(self, address=None, block=BLOCK_TAG_LATEST):
-        '''
+        """
         https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getbalance
 
         TESTED
-        '''
+        """
         address = address or self.eth_coinbase()
         block = validate_block(block)
         return hex_to_dec(self._call('eth_getBalance', [address, block]))
 
     def eth_getStorageAt(self, address=None, position=0, block=BLOCK_TAG_LATEST):
-        '''
+        """
         https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getstorageat
 
         TESTED
-        '''
+        """
         block = validate_block(block)
         return self._call('eth_getStorageAt', [address, hex(position), block])
 
     def eth_getCode(self, address, default_block=BLOCK_TAG_LATEST):
-        '''
+        """
         https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getcode
 
         NEEDS TESTING
-        '''
+        """
         if isinstance(default_block, str):
             if default_block not in BLOCK_TAGS:
                 raise ValueError
         return self._call('eth_getCode', [address, default_block])
 
     def eth_getBlockByNumber(self, block=BLOCK_TAG_LATEST, tx_objects=True):
-        '''
+        """
         https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getblockbynumber
 
         TESTED
-        '''
+        """
         block = validate_block(block)
         return self._call('eth_getBlockByNumber', [block, tx_objects])
 
     def eth_getTransactionReceipt(self, tx_hash):
-        '''
+        """
         https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_gettransactionreceipt
 
         TESTED
-        '''
+        """
         return self._call('eth_getTransactionReceipt', [tx_hash])

mythril/ethereum/interface/rpc/client.py

@@ -17,9 +17,9 @@ JSON_MEDIA_TYPE = 'application/json'
 This code is adapted from: https://github.com/ConsenSys/ethjsonrpc
 '''
 class EthJsonRpc(BaseClient):
-    '''
+    """
     Ethereum JSON-RPC client class
-    '''
+    """
 
     def __init__(self, host='localhost', port=GETH_DEFAULT_RPC_PORT, tls=False):
         self.host = host

mythril/ethereum/interface/rpc/utils.py

@@ -2,17 +2,17 @@ from .constants import BLOCK_TAGS
 
 
 def hex_to_dec(x):
-    '''
+    """
     Convert hex to decimal
-    '''
+    """
     return int(x, 16)
 
 
 def clean_hex(d):
-    '''
+    """
     Convert decimal to hex and remove the "L" suffix that is appended to large
     numbers
-    '''
+    """
     return hex(d).rstrip('L')
 
 def validate_block(block):
@@ -25,14 +25,14 @@ def validate_block(block):
 
 
 def wei_to_ether(wei):
-    '''
+    """
     Convert wei to ether
-    '''
+    """
     return 1.0 * wei / 10**18
 
 
 def ether_to_wei(ether):
-    '''
+    """
     Convert ether to wei
-    '''
+    """
     return ether * 10**18

mythril/interfaces/cli.py

@@ -5,7 +5,7 @@
    http://www.github.com/ConsenSys/mythril
 """
 
-import logging
+import logging, coloredlogs
 import json
 import sys
 import argparse
@@ -103,7 +103,10 @@ def main():
 
     if args.v:
         if 0 <= args.v < 3:
-            logging.basicConfig(level=[logging.NOTSET, logging.INFO, logging.DEBUG][args.v])
+            coloredlogs.install(
+                fmt='%(name)s[%(process)d] %(levelname)s %(message)s',
+                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")
 

mythril/laser/ethereum/call.py

@@ -49,7 +49,7 @@ def get_callee_address(global_state:GlobalState, dynamic_loader: DynLoader, symb
     try:
         callee_address = hex(util.get_concrete_int(symbolic_to_address))
     except AttributeError:
-        logging.info("Symbolic call encountered")
+        logging.debug("Symbolic call encountered")
 
         match = re.search(r'storage_(\d+)', str(simplify(symbolic_to_address)))
         logging.debug("CALL to: " + str(simplify(symbolic_to_address)))
@@ -58,7 +58,7 @@ def get_callee_address(global_state:GlobalState, dynamic_loader: DynLoader, symb
             raise ValueError()
 
         index = int(match.group(1))
-        logging.info("Dynamic contract address at storage index {}".format(index))
+        logging.debug("Dynamic contract address at storage index {}".format(index))
 
         # attempt to read the contract address from instance storage
         try:
@@ -90,22 +90,22 @@ def get_callee_account(global_state, callee_address, dynamic_loader):
         return global_state.accounts[callee_address]
     except KeyError:
         # We have a valid call address, but contract is not in the modules list
-        logging.info("Module with address " + callee_address + " not loaded.")
+        logging.debug("Module with address " + callee_address + " not loaded.")
 
     if dynamic_loader is None:
         raise ValueError()
 
-    logging.info("Attempting to load dependency")
+    logging.debug("Attempting to load dependency")
 
     try:
         code = dynamic_loader.dynld(environment.active_account.address, callee_address)
     except Exception as e:
-        logging.info("Unable to execute dynamic loader.")
+        logging.debug("Unable to execute dynamic loader.")
         raise ValueError()
     if code is None:
-        logging.info("No code returned, not a contract account?")
+        logging.debug("No code returned, not a contract account?")
         raise ValueError()
-    logging.info("Dependency loaded: " + callee_address)
+    logging.debug("Dependency loaded: " + callee_address)
 
     callee_account = Account(callee_address, code, callee_address, dynamic_loader=dynamic_loader)
     accounts[callee_address] = callee_account

mythril/laser/ethereum/evm_exceptions.py

@@ -12,3 +12,7 @@ class StackOverflowException(VmException):
 
 class InvalidJumpDestination(VmException):
     pass
+
+
+class InvalidInstruction(VmException):
+    pass

mythril/laser/ethereum/instructions.py

@@ -6,15 +6,16 @@ from ethereum import utils
 from z3 import Extract, UDiv, simplify, Concat, ULT, UGT, BitVecNumRef, Not, \
     is_false, is_expr, ExprRef, URem, SRem, BitVec, Solver, is_true, BitVecVal, If, BoolRef, Or
 
+import mythril.laser.ethereum.natives as natives
 import mythril.laser.ethereum.util as helper
 from mythril.laser.ethereum import util
 from mythril.laser.ethereum.call import get_call_parameters
+from mythril.laser.ethereum.evm_exceptions import VmException, StackUnderflowException, InvalidJumpDestination, \
+    InvalidInstruction
+from mythril.laser.ethereum.keccak import KeccakFunctionManager
 from mythril.laser.ethereum.state import GlobalState, CalldataType
-import mythril.laser.ethereum.natives as natives
 from mythril.laser.ethereum.transaction import MessageCallTransaction, TransactionStartSignal, \
     ContractCreationTransaction
-from mythril.laser.ethereum.evm_exceptions import VmException, StackUnderflowException, InvalidJumpDestination
-from mythril.laser.ethereum.keccak import KeccakFunctionManager
 
 TT256 = 2 ** 256
 TT256M1 = 2 ** 256 - 1
@@ -769,7 +770,8 @@ class Instruction:
             
             return self._sload_helper(global_state, str(index))
 
-    def _sload_helper(self, global_state, index, constraints=None):
+    @staticmethod
+    def _sload_helper(global_state, index, constraints=None):
         try:
             data = global_state.environment.active_account.storage[index]
         except KeyError:
@@ -782,8 +784,8 @@ class Instruction:
         global_state.mstate.stack.append(data)
         return [global_state]
 
-
-    def _get_constraints(self, keccak_keys, this_key, argument):
+    @staticmethod
+    def _get_constraints(keccak_keys, this_key, argument):
         global keccak_function_manager
         for keccak_key in keccak_keys:
             if keccak_key == this_key:
@@ -833,7 +835,8 @@ class Instruction:
 
             return self._sstore_helper(global_state, str(index), value)
 
-    def _sstore_helper(self, global_state, index, value, constraint=None):
+    @staticmethod
+    def _sstore_helper(global_state, index, value, constraint=None):
         try:
             global_state.environment.active_account = deepcopy(global_state.environment.active_account)
             global_state.accounts[
@@ -990,15 +993,23 @@ class Instruction:
 
     @StateTransition()
     def revert_(self, global_state):
-        return []
+        state = global_state.mstate
+        offset, length = state.stack.pop(), state.stack.pop()
+        return_data = [global_state.new_bitvec("return_data", 256)]
+        try:
+            return_data = state.memory[util.get_concrete_int(offset):util.get_concrete_int(offset + length)]
+        except AttributeError:
+            logging.debug("Return with symbolic length or offset. Not supported")
+        global_state.current_transaction.end(global_state, return_data=return_data, revert=True)
 
     @StateTransition()
     def assert_fail_(self, global_state):
-        return []
+        # 0xfe: designated invalid opcode
+        raise InvalidInstruction
 
     @StateTransition()
     def invalid_(self, global_state):
-        return []
+        raise InvalidInstruction
 
     @StateTransition()
     def stop_(self, global_state):
@@ -1014,7 +1025,7 @@ class Instruction:
             callee_address, callee_account, call_data, value, call_data_type, gas, memory_out_offset, memory_out_size = get_call_parameters(
                 global_state, self.dynamic_loader, True)
         except ValueError as e:
-            logging.info(
+            logging.debug(
                 "Could not determine required parameters for call, putting fresh symbol on the stack. \n{}".format(e)
             )
             # TODO: decide what to do in this case

mythril/laser/ethereum/state.py

@@ -135,7 +135,9 @@ class MachineStack(list):
     """
     STACK_LIMIT = 1024
 
-    def __init__(self, default_list=[]):
+    def __init__(self, default_list=None):
+        if default_list is None:
+            default_list = []
         super(MachineStack, self).__init__(default_list)
 
     def append(self, element):

mythril/laser/ethereum/svm.py

@@ -60,7 +60,7 @@ class LaserEVM:
     def accounts(self):
         return self.world_state.accounts
 
-    def sym_exec(self, main_address=None, creation_code=None, contract_name=None):
+    def sym_exec(self, main_address=None, creation_code=None, contract_name=None, max_transactions=3):
         logging.debug("Starting LASER execution")
         self.time = datetime.now()
 
@@ -77,19 +77,30 @@ class LaserEVM:
 
             # Reset code coverage
             self.coverage = {}
-            self.time = datetime.now()
-            logging.info("Starting message call transaction")
-            execute_message_call(self, created_account.address)
+            for i in range(max_transactions):
+                initial_coverage = self._get_covered_instructions()
 
                 self.time = datetime.now()
+                logging.info("Starting message call transaction, iteration: {}".format(i))
                 execute_message_call(self, created_account.address)
 
+                end_coverage = self._get_covered_instructions()
+                if end_coverage == initial_coverage:
+                    break
+
         logging.info("Finished symbolic execution")
         logging.info("%d nodes, %d edges, %d total states", len(self.nodes), len(self.edges), self.total_states)
         for code, coverage in self.coverage.items():
             cov = reduce(lambda sum_, val: sum_ + 1 if val else sum_, coverage[1]) / float(coverage[0]) * 100
             logging.info("Achieved {} coverage for code: {}".format(cov, code))
 
+    def _get_covered_instructions(self) -> int:
+        """ Gets the total number of covered instructions for all accounts in the svm"""
+        total_covered_instructions = 0
+        for _, cv in self.coverage.items():
+            total_covered_instructions += reduce(lambda sum_, val: sum_ + 1 if val else sum_, cv[1])
+        return total_covered_instructions
+
     def exec(self, create=False):
         for global_state in self.strategy:
             if self.execution_timeout and not create:
@@ -124,36 +135,57 @@ class LaserEVM:
             new_global_states = Instruction(op_code, self.dynamic_loader).evaluate(global_state)
 
         except VmException as e:
+            transaction, return_global_state = global_state.transaction_stack.pop()
+
+            if return_global_state is None:
+                # In this case we don't put an unmodified world state in the open_states list Since in the case of an
+                #  exceptional halt all changes should be discarded, and this world state would not provide us with a
+                #  previously unseen world state
                 logging.debug("Encountered a VmException, ending path: `{}`".format(str(e)))
                 new_global_states = []
+            else:
+                # First execute the post hook for the transaction ending instruction
+                self._execute_post_hook(op_code, [global_state])
+                new_global_states = self._end_message_call(return_global_state, global_state,
+                                                           revert_changes=True, return_data=None)
 
-        except TransactionStartSignal as e:
+        except TransactionStartSignal as start_signal:
             # Setup new global state
-            new_global_state = e.transaction.initial_global_state()
+            new_global_state = start_signal.transaction.initial_global_state()
 
-            new_global_state.transaction_stack = copy(global_state.transaction_stack) + [(e.transaction, global_state)]
+            new_global_state.transaction_stack = copy(global_state.transaction_stack) + [(start_signal.transaction, global_state)]
             new_global_state.node = global_state.node
             new_global_state.mstate.constraints = global_state.mstate.constraints
 
             return [new_global_state], op_code
 
-        except TransactionEndSignal as e:
-            transaction, return_global_state = e.global_state.transaction_stack.pop()
+        except TransactionEndSignal as end_signal:
+            transaction, return_global_state = end_signal.global_state.transaction_stack.pop()
 
             if return_global_state is None:
-                if not isinstance(transaction, ContractCreationTransaction) or transaction.return_data:
-                    e.global_state.world_state.node = global_state.node
-                    self.open_states.append(e.global_state.world_state)
+                if (not isinstance(transaction, ContractCreationTransaction) or transaction.return_data) and not end_signal.revert:
+                    end_signal.global_state.world_state.node = global_state.node
+                    self.open_states.append(end_signal.global_state.world_state)
                 new_global_states = []
             else:
                 # First execute the post hook for the transaction ending instruction
-                self._execute_post_hook(op_code, [e.global_state])
+                self._execute_post_hook(op_code, [end_signal.global_state])
 
+                new_global_states = self._end_message_call(return_global_state, global_state,
+                                                           revert_changes=False or end_signal.revert,
+                                                           return_data=transaction.return_data)
+
+        self._execute_post_hook(op_code, new_global_states)
+
+        return new_global_states, op_code
+
+    def _end_message_call(self, return_global_state, global_state, revert_changes=False, return_data=None):
         # Resume execution of the transaction initializing instruction
         op_code = return_global_state.environment.code.instruction_list[return_global_state.mstate.pc]['opcode']
 
         # Set execution result in the return_state
-                return_global_state.last_return_data = transaction.return_data
+        return_global_state.last_return_data = return_data
+        if not revert_changes:
             return_global_state.world_state = copy(global_state.world_state)
             return_global_state.environment.active_account = \
                 global_state.accounts[return_global_state.environment.active_account.address]
@@ -165,9 +197,7 @@ class LaserEVM:
         for state in new_global_states:
             state.node = global_state.node
 
-        self._execute_post_hook(op_code, new_global_states)
-
-        return new_global_states, op_code
+        return new_global_states
 
     def _measure_coverage(self, global_state):
         code = global_state.environment.code.bytecode
@@ -234,7 +264,7 @@ class LaserEVM:
             environment.active_function_name = disassembly.addr_to_func[address]
             new_node.flags |= NodeFlags.FUNC_ENTRY
 
-            logging.info(
+            logging.debug(
                 "- Entering function " + environment.active_account.contract_name + ":" + new_node.function_name)
         elif address == 0:
             environment.active_function_name = "fallback"

mythril/laser/ethereum/taint_analysis.py

@@ -82,7 +82,7 @@ class TaintRunner:
     """
 
     @staticmethod
-    def execute(statespace, node, state, initial_stack=[]):
+    def execute(statespace, node, state, initial_stack=None):
         """
         Runs taint analysis on the statespace
         :param statespace: symbolic statespace to run taint analysis on
@@ -91,6 +91,8 @@ class TaintRunner:
         :param stack_indexes: stack indexes to introduce taint
         :return: TaintResult object containing analysis results
         """
+        if initial_stack is None:
+            initial_stack = []
         result = TaintResult()
         transaction_stack_length = len(node.states[0].transaction_stack)
         # Build initial current_node
@@ -107,7 +109,8 @@ class TaintRunner:
             records = TaintRunner.execute_node(node, record, index)
 
             result.add_records(records)
-
+            if len(records) == 0:          # continue if there is no record to work on
+                continue
             children = TaintRunner.children(node, statespace, environment, transaction_stack_length)
             for child in children:
                 current_nodes.append((child, records[-1], 0))

mythril/laser/ethereum/transaction/transaction_models.py

@@ -12,10 +12,12 @@ def get_next_transaction_id():
     _next_transaction_id += 1
     return _next_transaction_id
 
+
 class TransactionEndSignal(Exception):
     """ Exception raised when a transaction is finalized"""
-    def __init__(self, global_state):
+    def __init__(self, global_state, revert=False):
         self.global_state = global_state
+        self.revert = revert
 
 
 class TransactionStartSignal(Exception):
@@ -70,9 +72,9 @@ class MessageCallTransaction:
 
         return global_state
 
-    def end(self, global_state, return_data=None):
+    def end(self, global_state, return_data=None, revert=False):
         self.return_data = return_data
-        raise TransactionEndSignal(global_state)
+        raise TransactionEndSignal(global_state, revert)
 
 
 class ContractCreationTransaction:
@@ -125,7 +127,7 @@ class ContractCreationTransaction:
 
         return global_state
 
-    def end(self, global_state, return_data=None):
+    def end(self, global_state, return_data=None, revert=False):
 
         if not all([isinstance(element, int) for element in return_data]):
             self.return_data = None
@@ -136,4 +138,6 @@ class ContractCreationTransaction:
         global_state.environment.active_account.code = Disassembly(contract_code)
         self.return_data = global_state.environment.active_account.address
 
-        raise TransactionEndSignal(global_state)
+        raise TransactionEndSignal(global_state, revert=revert)
+
+

mythril/laser/ethereum/util.py

@@ -104,11 +104,11 @@ def concrete_int_to_bytes(val):
 
     # logging.debug("concrete_int_to_bytes " + str(val))
 
-    try:
-        return (simplify(val).as_long()).to_bytes(32, byteorder='big')
-    except Z3Exception:
+    if type(val) == int:
         return val.to_bytes(32, byteorder='big')
 
+    return (simplify(val).as_long()).to_bytes(32, byteorder='big')
+
 
 def bytearray_to_int(arr):
     o = 0

mythril/mythril.py

@@ -20,8 +20,8 @@ import platform
 from mythril.ether import util
 from mythril.ether.ethcontract import ETHContract
 from mythril.ether.soliditycontract import SolidityContract, get_contracts_from_file
-from mythril.rpc.client import EthJsonRpc
-from mythril.rpc.exceptions import ConnectionError
+from mythril.ethereum.interface.rpc.client import EthJsonRpc
+from mythril.ethereum.interface.rpc.exceptions import ConnectionError
 from mythril.support import signatures
 from mythril.support.truffle import analyze_truffle_project
 from mythril.support.loader import DynLoader
@@ -31,7 +31,7 @@ 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
+from mythril.ethereum.interface.leveldb.client import EthLevelDB
 
 # logging.basicConfig(level=logging.DEBUG)
 
@@ -103,7 +103,8 @@ class Mythril(object):
 
         self.contracts = []  # loaded contracts
 
-    def _init_mythril_dir(self):
+    @staticmethod
+    def _init_mythril_dir():
         try:
             mythril_dir = os.environ['MYTHRIL_DIR']
         except KeyError:
@@ -179,7 +180,8 @@ class Mythril(object):
     def analyze_truffle_project(self, *args, **kwargs):
         return analyze_truffle_project(self.sigs, *args, **kwargs)  # just passthru by passing signatures for now
 
-    def _init_solc_binary(self, version):
+    @staticmethod
+    def _init_solc_binary(version):
         # Figure out solc binary and version
         # Only proper versions are supported. No nightlies, commits etc (such as available in remix)
 
@@ -317,7 +319,7 @@ class Mythril(object):
 
             try:
                 # import signatures from solidity source
-                self.sigs.import_from_solidity_source(file)
+                self.sigs.import_from_solidity_source(file, solc_binary=self.solc_binary, solc_args=self.solc_args)
                 # Save updated function signatures
                 self.sigs.write()  # dump signatures to disk (previously opened file or default location)
 
@@ -382,7 +384,9 @@ class Mythril(object):
 
         return report
 
-    def get_state_variable_from_storage(self, address, params=[]):
+    def get_state_variable_from_storage(self, address, params=None):
+        if params is None:
+            params = []
         (position, length, mappings) = (0, 1, [])
         try:
             if params[0] == "mapping":
@@ -433,7 +437,8 @@ class Mythril(object):
             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):
+    @staticmethod
+    def disassemble(contract):
         return contract.get_easm()
 
     @staticmethod

mythril/support/loader.py

@@ -37,7 +37,7 @@ class DynLoader:
 
         m = re.match(r'^(0x[0-9a-fA-F]{40})$', dependency_address)
 
-        if (m):
+        if m:
             dependency_address = m.group(1)
 
         else:

mythril/support/signatures.py

@@ -111,6 +111,8 @@ class SignatureDb(object):
         :return: self
         """
         path = path or self.signatures_file
+        directory = os.path.split(path)[0]
+
         if sync and os.path.exists(path):
             # reload and save if file exists
             with open(path, "r") as f:
@@ -123,6 +125,9 @@ class SignatureDb(object):
             sigs.update(self.signatures)  # reload file and merge cached sigs into what we load from file
             self.signatures = sigs
 
+        if directory and not os.path.exists(directory):
+            os.makedirs(directory)         # create folder structure if not existS
+
         if not os.path.exists(path):       # creates signatures.json file if it doesn't exist
             open(path, "w").close()
 
@@ -172,13 +177,13 @@ class SignatureDb(object):
         """
         return self.get(sighash=item)
 
-    def import_from_solidity_source(self, file_path):
+    def import_from_solidity_source(self, file_path, solc_binary="solc", solc_args=None):
         """
         Import Function Signatures from solidity source files
         :param file_path: solidity source code file path
         :return: self
         """
-        self.signatures.update(SignatureDb.get_sigs_from_file(file_path))
+        self.signatures.update(SignatureDb.get_sigs_from_file(file_path, solc_binary=solc_binary, solc_args=solc_args))
         return self
 
     @staticmethod
@@ -201,13 +206,15 @@ class SignatureDb(object):
                                                                                        proxies=proxies))
 
     @staticmethod
-    def get_sigs_from_file(file_name):
+    def get_sigs_from_file(file_name, solc_binary="solc", solc_args=None):
         """
         :param file_name: accepts a filename
         :return: their signature mappings
         """
         sigs = {}
-        cmd = ["solc", "--hashes", file_name]
+        cmd = [solc_binary, "--hashes", file_name]
+        if solc_args:
+            cmd.extend(solc_args.split())
         try:
             p = Popen(cmd, stdout=PIPE, stderr=PIPE)
             stdout, stderr = p.communicate()

requirements.txt

@@ -1,3 +1,4 @@
+coloredlogs>=10.0
 configparser>=3.5.0
 coverage
 eth_abi>=1.0.0

setup.py

@@ -82,6 +82,7 @@ setup(
     packages=find_packages(exclude=['contrib', 'docs', 'tests']),
 
     install_requires=[
+        'coloredlogs>=10.0',
         'ethereum>=2.3.2',
         'z3-solver>=4.5',
         'requests',

tests/laser/evm_testsuite/VMTests/vmTests/suicide.json

@@ -0,0 +1,51 @@
+{
+    "suicide" : {
+        "_info" : {
+            "comment" : "",
+            "filledwith" : "testeth 1.5.0.dev2-52+commit.d419e0a2",
+            "lllcversion" : "Version: 0.4.26-develop.2018.9.19+commit.785cbf40.Linux.g++",
+            "source" : "src/VMTestsFiller/vmTests/suicideFiller.json",
+            "sourceHash" : "4622c577440f9db4b3954a1de60bf2fac55886dcb0ec4ecaf906c25bc77372e7"
+        },
+        "callcreates" : [
+        ],
+        "env" : {
+            "currentCoinbase" : "0x2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+            "currentDifficulty" : "0x0100",
+            "currentGasLimit" : "0x0f4240",
+            "currentNumber" : "0x00",
+            "currentTimestamp" : "0x01"
+        },
+        "exec" : {
+            "address" : "0x0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "caller" : "0xcd1722f3947def4cf144679da39c4c32bdc35681",
+            "code" : "0x33ff",
+            "data" : "0x",
+            "gas" : "0x0186a0",
+            "gasPrice" : "0x5af3107a4000",
+            "origin" : "0xcd1722f3947def4cf144679da39c4c32bdc35681",
+            "value" : "0x0de0b6b3a7640000"
+        },
+        "gas" : "0x01869e",
+        "logs" : "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
+        "out" : "0x",
+        "post" : {
+            "0xcd1722f3947def4cf144679da39c4c32bdc35681" : {
+                "balance" : "0x152d02c7e14af6800000",
+                "code" : "0x",
+                "nonce" : "0x00",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "0x0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "0x152d02c7e14af6800000",
+                "code" : "0x33ff",
+                "nonce" : "0x00",
+                "storage" : {
+                }
+            }
+        }
+    }
+}

tests/laser/evm_testsuite/evm_test.py

@@ -12,7 +12,7 @@ import pytest
 
 evm_test_dir = Path(__file__).parent / 'VMTests'
 
-test_types = ['vmArithmeticTest', 'vmBitwiseLogicOperation', 'vmPushDupSwapTest']
+test_types = ['vmArithmeticTest', 'vmBitwiseLogicOperation', 'vmPushDupSwapTest', 'vmTests']
 
 
 def load_test_data(designations):

tests/native_test.py

@@ -6,13 +6,13 @@ from mythril.laser.ethereum import svm
 from tests import *
 
 
-SHA256_TEST = [ (0,False) for i in range(6)]
+SHA256_TEST = [(0, False) for _ in range(6)]
 
-RIPEMD160_TEST = [ (0,False) for i in range(6)]
+RIPEMD160_TEST = [(0, False) for _ in range(6)]
 
-ECRECOVER_TEST = [ (0,False) for i in range(9)]
+ECRECOVER_TEST = [(0, False) for _ in range(9)]
 
-IDENTITY_TEST = [ (0, False) for i in range(4)]
+IDENTITY_TEST = [(0, False) for _ in range(4)]
 
 SHA256_TEST[0] = (5555555555555555, True)     #These are Random numbers to check whether the 'if condition' is entered or not(True means entered)
 SHA256_TEST[1] = (323232325445454546, True)
@@ -98,9 +98,9 @@ def _test_natives(laser_info, test_list, test_name):
     assert(success == len(test_list))
 
 
-
 class NativeTests(BaseTestCase):
-    def runTest(self):
+    @staticmethod
+    def runTest():
         disassembly = SolidityContract('./tests/native_tests.sol').disassembly
         account = Account("0x0000000000000000000000000000000000000000", disassembly)
         accounts = {account.address: account}

tests/rpc_test.py

@@ -1,6 +1,6 @@
 from unittest import TestCase
 
-from mythril.rpc.client import EthJsonRpc
+from mythril.ethereum.interface.rpc.client import EthJsonRpc
 
 class RpcTest(TestCase):
     client = None