2022-06-07 23:31:36 +00:00
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---
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date: 2022-06-07T22:11:49Z
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draft: false
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aliases: []
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categories: ['exploit']
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series: ['hacking']
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tags: ['bug']
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chroma: false
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toc: true
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title: Duolingo Xp Exploit
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description: I found a bug in the Duoling app for iOS that let's super/pro users instantly complete speaking only lessons.
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---
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{{< raw >}}
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<style>video { float: right; }</style>
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<video width='27%' autoplay controls loop muted>
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<source src='/duolingo-xp-exploit.mp4' type='video/mp4'>
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<b>Your browser does not support the video tag!</b>
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</video>
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{{< /raw >}}
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It's possible for super/pro users to instantly complete speaking only lessons on iOS.
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## How to reproduce
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1. Make sure the Duoling app does *not* have microphone access.
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2. Start a round of "Perfect Pronunciation" in the "Practice Hub".
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3. Click continue and when prompted for microphone access, just click cancel.
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4. Profit. (Instant perfect lesson!)
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## Summary
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2022-06-08 09:50:51 +00:00
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The bug here seems to be that the first in app prompt for microphone access does nothing, except telling the end user to *please* give up mic perms.
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Later we do actually get that iOS prompt on the first actual lesson.
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2022-06-07 23:31:36 +00:00
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The Duoling app skips all the speaking lessons as it usually would when denied microphone access.
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But this of course is a big problem when all the lessons are speaking lessons.
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The end result is an *almost* instant perfect lesson!~
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