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An old FoxPro program reverse engineered inside DOSBox

An HN comment: Claude set up DOSBox and worked through the old program to document it.

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Credits

  • HN commenter bendangelo Source ↗

Earliest dated source: 31 Oct 2026

The full story

A Hacker News commenter used Claude to reverse engineer an old FoxPro program. Claude set up DOSBox, went through every screen and examined whatever files it could reach. In a single week the rebuilt version was, in their words, 99% the same. Another commenter described decompiling a childhood game with Ghidra and recompiling it for the browser in under 40 minutes.

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Sources

From a passing comment or social post, so the details are thin.

  • Hacker News: I used claude to reverse engineer an old foxpro program. it setup a dos box and went through every sForum threadnews.ycombinator.com
    HN commenter: bendangeloPosted 31 Oct 2026

    The comment and replies.

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Prompt & Solder

An independent community project. Not affiliated with Anthropic.

What this is. Real projects where people used Claude to build, fix, port, revive or take apart something, from jailbroken Kindles to rebuilt DOS games, plus the times it went badly wrong. Every build links to where it was shared, and every source is listed here.

How far to trust it. We summarise what people reported and say what each build rests on: a full write-up with code, a short post, or a passing comment. We haven't tested them ourselves. Photos are shown from the original sources with credit. Only modify hardware you own, and back up first.

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