Hackathon 1O1

heya so i'm trying to create a google play console acc so that i can publish android apps on playstore but unfortunately my card ain’t working 🫠
i tried airtel virtual debit card, sbi rupay card (these didn’t even get added)
and at last sbi visa debit card (it got declined idk why)

nothing worked at all!!

got any suggestions?

A price tampering vulnerability within a vending machine API that disrupts the payment flow;

read article by me:
https://medium.com/@x64vbhv/breaking-the-payment-flow-a-price-tampering-vulnerability-in-a-vending-machine-api-c5e8a7ab63f1

reverse engineered NTES - the backend that powers Indian Railways train tracking;

then published it on PyPI: https://pypi.org/project/ntes-client
& on github: https://github.com/x64vbhv/ntes-client

anyone can:
pip install ntes-client

and track trains, check schedules, get live station updates — all from Python.

unofficial? yes.
functional? absolutely.

source: here

System Design & Golang (Basics to Intermediate)

www.karanpratapsingh.com/courses

ML
https://youtube.com/playlist?list=PLKnIA16_Rmvbr7zKYQuBfsVkjoLcJgxHH&si=mxL2AnU-lMWU2J2A

Visual: https://mlu-explain.github.io/

Google OAuth Login (Login with Google) Workflow

[1] Client ID & Secret

[-] What: Your app's public username (ID) and hidden password (Secret).
[-] Where: Google Cloud Console > APIs & Services > Credentials.

[2] Callback URL (Redirect URI)

[-] What: The exact link on your site where Google sends the user *after* they hit "Allow."
[-] Where: Added in that exact same Credentials page in Google Cloud.

[3] How You Get the Token

> Step A: Google redirects the user to your Callback URL and attaches a temporary code to the link.
> Step B: Your backend takes that code and sends it to Google along with your Client ID and Secret.
> Step C: Google checks them. If they match, Google gives your backend the Access Token.
>

SWE/Backend Interview Prep Checklist

Credit: anubhavchoubey.com

yoo yoo... thinking of teaching python then flask/fastapi backend

need revision anyway nd i feel teaching is one of the best ways to learn

so if you're preparing for placements nd wanna learn backend quickly i can teach u for free ofc ;)

btw i'm not an expert it's just i feel best way to learn is to teach;

Complete DSA & CP Prep Guide

A fully structured, step-by-step roadmap to mastering Data Structures, Algorithms, and Competitive Programming.

What to expect:
• A structured, phase-by-phase learning approach.
• Direct links to curated videos, problem sheets, and mock OAs.
• Honest feedback on popular resources (what to actually use and what to avoid).
• Clear strategies for cracking online assessments and interviews.

See the attached PDF for the full guide and active links.

great python flask backend resource: blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-i-hello-world

article only; saves alot of time;

How to add "Show Project" btn for linkedin projects;
😵‍💫🤙

Reddit's Architecture Casestudy: https://www.infoq.com/presentations/reddit-architecture-evolution/

Reddit's System Design: https://writetokaks.medium.com/reddit-system-design-2c20fa31089e

Give it a read;

Watching rn: https://youtube.com/watch?v=X3rXAkZwRuQ