Archive - JonLuca's Blog

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Noticing when an app has servers in different regions

I was talking to a friend of mine about native apps and how some apps not built using UIKit/SwiftUI just feel laggier, and it got me thinking about…

Jun 26 •

May 2023

Exploring how Magic Link works

Magic Link is a web3 wallet-as-a-service. They provide an SDK that enables users to have a crypto wallet linked to just their email address, instead of…

May 31 •

April 2023

Semantic search in iMessage, iMessage Wrapped, and AI conversations

TLDR - You can download Mimessage on GitHub I’ve always been surprised at how slow and and clunky it is to search in iMessage. It feels like it doesn’t…

Apr 14 •

May 2022

Getting a vanity phone number with 4 repeating digits

I find that it’s pretty useful to have access to multiple phone numbers. Any time a site offers a discount if you give them their phone number, or when…

May 28, 2022 •

Reversing Resy’s API to create a javascript client

A couple months ago I made a post about building an OpenTable bot, which lets me monitor and will automatically book reservations that are hard to get…

May 9, 2022 •

February 2022

Web3, Free Candy, and exploits galore

On 1/4/22, nearly 4000 Solana NFT projects were drained of their funds due to a reinitialization bug present in the Candy Machine v1 smart contract on…

Feb 26, 2022 •

January 2022

Analyzing Seated’s restaurants by reversing their API

Last month I wrote about writing a bot to automatically get reservations for OpenTable. In that same vein, Seated is an app that offers a certain…

Jan 2, 2022 •

December 2021

Building an OpenTable bot

New York City has some of the best restaurants in the world, with some of the most competitive reservations to match. Some of the hottest restaurants…

Dec 3, 2021 •

August 2021

Snapshotting memory to scrape encrypted network requests

Most web reverse engineering focuses on two attack surfaces - either DOM scraping through something like puppeteer or beatifulsoup, or on MITM attacks…

Aug 8, 2021 •

July 2021

JavaScript gotchas

Here are some interesting JavaScript facts that I’ve encountered over the last few years. Function.length Call Function.length will return the number of…

Jul 18, 2021 •

June 2021

Writing fast async HTTP requests in Python

I do a lot of web scraping in my spare time, and have been chasing down different formats and code snippets to make a large amount of network requests…

Jun 15, 2021 •

May 2021

A boilerplate for SSR’d Vite, React 17, and TypeScript 4.3

Introducing a barebones, slightly-opinionated boilerplate for working with a modern web stack written for 2021. This takes the additional jump of…

May 16, 2021 •

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