Janio-Rosa

beaker-auction

bubble-sheet-multiple-choice-scanner

Bubble sheet multiple choice scanner example with OpenCV

buyer-dif

Ethernaut Game Buyer where we need to try to by with a lower price than the required

change-ownership

Ethernaut Game where we need to change ownership of a already deployed contract. This is very easy but important to teach how to acess a already deployed contract.

coin-flip

Ethernaut game Coin Flip where we need to guess the flip many times (statistcally not possible to guess by chance)

delegate-call

Ethernaut Game Delegate Call where we need to try to exploit a contract by changing ownership of it using the context within it's contract storage that called other contract by delegatecall

importacaoimagens

Important part of the online essay evaluation and correction system that I made for the Federal University of Uberlandia (UFU-MG-Brasil). This system was desined to read images and recognize bar codes and answer sheet. Connect each answer sheet with the respective candidate. Then save the obtained information to database.

Janio-Rosa

Config files for my GitHub profile.

myportfolio

My Porfolio Site

solidity-rw-blockchain

My solidity project to read and write information from/to blockchain

Janio-Rosa/buyer-dif

Ethernaut Game Buyer where we need to try to by with a lower price than the required

Janio-Rosa/change-ownership

Ethernaut Game where we need to change ownership of a already deployed contract. This is very easy but important to teach how to acess a already deployed contract.

Janio-Rosa/coin-flip

Ethernaut game Coin Flip where we need to guess the flip many times (statistcally not possible to guess by chance)

Janio-Rosa/delegate-call

Ethernaut Game Delegate Call where we need to try to exploit a contract by changing ownership of it using the context within it's contract storage that called other contract by delegatecall

Janio-Rosa/Janio-Rosa

Config files for my GitHub profile.

Janio-Rosa/myportfolio

My Porfolio Site

Janio-Rosa/solidity-rw-blockchain

My solidity project to read and write information from/to blockchain

Janio-Rosa/beaker-auction

Janio-Rosa/damnvulnerabledefi-ctf

My updates on one of the most funny CTFs on crypto - Damnvulnerabledefi

Janio-Rosa/denial

Ethernaut Game Denial where we need to deny a contract it's withdrawal function

Janio-Rosa/dex

Ethernaut DEX hacking challenge, where we need to drain all the funds from one token

Janio-Rosa/dex-two

Ethernaut hacking challenge were we need to drain all funds from both tokens

Janio-Rosa/elevator

Ethernaut elevator challenge were we need to tricks its contract to go to the last floor

Janio-Rosa/fallback

A Simple challenge by Ethernaut Game where we need to change contract's ownership

Janio-Rosa/gatekeeper

Janio-Rosa/gatekeeper-two

Gatekeeper Two is another challenge with different gates than the previous one, that needs to be beaten

Janio-Rosa/gptresearch

Janio-Rosa/janio.github.io

My Basic Background

Janio-Rosa/king-ddos

Solution for the King of Ether game, a version provided by the Ethernaut Game

Janio-Rosa/magicnumber

Solution for the Magic Number Ethernaut challenge , where we need to deploy a very tiny contract using only opcodes

Janio-Rosa/merkle-tree-airdrop

On this project I developed a AIR Drop using a merkle tree (the leaves are the OEA eligible addresses and we store only the root at the blockchain). The proof is used to check the eligibility to claim the airdrop rewards.

Janio-Rosa/my-token-swap

My TokenSwap like Uniswap website, just for learning purposes. It includes Solidity Smart Contracts, deployed on test net, connected to the website to privde my custom token/eth swap

Janio-Rosa/naughtcoin

Solution for the NaughCoin Ethernaut Challenge

Janio-Rosa/playingproxy

Janio-Rosa/preservation

Solution for the Preservation Ethernaut challenge

Janio-Rosa/privacy

Solution for the Privacy challenge by Ethernaut

Janio-Rosa/recovery

Solution by me for the Recovery Ethernaut challenge

Janio-Rosa/reentrance

Solution for the Reentrance Ethernaut Game

Janio-Rosa/secret-vault

Solution (by me) for the Secret Vault Ethernaut Game Challenge

Janio-Rosa/send-money

Solution for the Send Money Ethernaut Game