From 55be6a88834e23b9bb5de19fcd6a023262b48159 Mon Sep 17 00:00:00 2001 From: Joran Honig Date: Thu, 19 Jul 2018 15:03:28 +0200 Subject: [PATCH] Use CallTransaction versus constructing environments in LaserEVM --- mythril/laser/ethereum/svm.py | 30 ++++-------------------------- 1 file changed, 4 insertions(+), 26 deletions(-) diff --git a/mythril/laser/ethereum/svm.py b/mythril/laser/ethereum/svm.py index 6177c4ad..83dd6d3e 100644 --- a/mythril/laser/ethereum/svm.py +++ b/mythril/laser/ethereum/svm.py @@ -1,6 +1,7 @@ from z3 import BitVec import logging from mythril.laser.ethereum.state import GlobalState, Environment, CalldataType, Account, WorldState +from mythril.laser.ethereum.transaction import CallTransaction from mythril.laser.ethereum.instructions import Instruction from mythril.laser.ethereum.cfg import NodeFlags, Node, Edge, JumpType from mythril.laser.ethereum.strategy.basic import DepthFirstSearchStrategy @@ -45,35 +46,12 @@ class LaserEVM: def sym_exec(self, main_address): logging.debug("Starting LASER execution") + transaction = CallTransaction(main_address) + transaction.run([self.world_state], self) - # Initialize the execution environment - environment = Environment( - self.world_state[main_address], - BitVec("caller", 256), - [], - BitVec("gasprice", 256), - BitVec("callvalue", 256), - BitVec("origin", 256), - calldata_type=CalldataType.SYMBOLIC, - ) - - self.instructions_covered = [False for _ in environment.code.instruction_list] - - initial_node = Node(environment.active_account.contract_name) - self.nodes[initial_node.uid] = initial_node - - global_state = GlobalState(self.world_state, environment, initial_node) - initial_node.states.append(global_state) - - # Empty the work_list before starting an execution - self.work_list.append(global_state) - self._sym_exec() - - logging.info("Execution complete") - logging.info("Achieved {0:.3g}% coverage".format(self.coverage)) logging.info("%d nodes, %d edges, %d total states", len(self.nodes), len(self.edges), self.total_states) - def _sym_exec(self): + def exec(self): for global_state in self.strategy: try: new_states, op_code = self.execute_state(global_state)