Payload Party: Chaining Tiny Bugs Into a Full-Blown Account Takeover

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Ever have one of those days where you’re cleaning your desk and find ₹500 you didn’t know existed? That was my bug bounty: small, forgotten bugs that led to a sweet, unexpected payday.

This is my real story — the Payload Party: how I chained micro-flaws, each boring in isolation, into a full account takeover. Grab your favorite drink (coffee recommended ☕) and let’s dive in!

1. Recon Roulette: Gathering the Bug Bits

I began with classic recon tools:

subfinder -d target.com -o subs.txt
amass enum -d target.com -o amass.txt
waybackurls target.com | tee endpoints.txt

These scans turned up:

A forgotten subdomain: beta.api.target.com
A dusty open redirect param: ?next= in /login/redirect
A POST /user/update endpoint that accepted JSON without CSRF protection