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This video is an explanation of $7,500 vulnerability reported to Valve bug bounty program. The bug allowed adding infinite funds to user’s Steam account by exploiting a flaw in the integration of Steam with Smart2Pay.

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00:00 Intro
00:33 The flow of adding funds to Steam account
04:36 Constructing the signature
05:30 The exploit
07:52 How to access hands-on labs?

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