The Spam SMS that turned into a rabbit hole
I was supposed to be building an Android app, ended up taking one apart
Jun 24, 202615 min read132
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Series
A ground up investigation into a real smishing campaign targeting users through a fake MoRTH eChallan notification.
What starts as a suspicious SMS turns into a four-stage dropper framework: custom encryption, bulletproof C2 infrastructure, VPN traffic interception and a final banking trojan payload.
Every layer, reverse engineered.