Ancestors

Written by Foone🏳️‍⚧️ on 2025-01-02 at 06:26

tandy put their sound chip on the 1A interrupt? THE TIME SERVICES?

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 06:27

I started reverse engineering Where in the World is Carmen Sandiego (Enhanced DOS edition) and I'm trying to find how it generates its random seeds so I search on int 1a and the first thing I find is it's doing TANDY SOUNDS?

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 06:38

Funny fact: I was trying to get an online assembler to spit out the machine code for "int 1a" but couldn't get it to, so I just went "fuck it, I can probably just do that in my head!"

Turns out I can. My brain is weird.

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 06:56

Here's something I didn't know existed until just now: Where in the World is Carmen Sandiego checks your name against the list dossier list and rejects you if you use any of those names.

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 07:01

PRONOUNS DETECTED: THIS GAME IS WOKE

sadly they don't have they/them on here. What about the non-binary criminals, huh?

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 07:03

stretch goal: hack in at least on enby criminal with appropriate pronouns. maybe I'll just put myself in the game as one of the criminals you can apprehend

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 07:22

I faked this screenshot but this is what I mean

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 07:30

I think I might be able to do the hack I want by changing one byte.

I'm trying to change it so it has "daily challenges", and I think I can fix that by just switching a INT 1A from subfunction 00 to 04, making it seed the random function with the date instead of the ticks-since-midnight

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 08:06

eh, I used 5 bytes. I don't need to impress anyone

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 09:52

NORMAL CODE

random(*(byte )(undefined2 *)

                   (*(int *)(*(int *)0x39a6 * 0xe + local_c * 2 + 0x1d02) * 2 +

                   *(int *)(local_c * 2 + 0x24b)) - 1);

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 09:55

I found another set of pronouns!

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 09:56

I haven't figured out how this game stores gender, but I'm gonna go out on a limb and say it's like this:

male: 0

female: 4

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 09:59

why? because they have strings like:

char* HE="He\0\0She\0"

char* HIS="His\0Hers\0";

char* HIM="Him\0Her\0";

so they can do like:

printf("Follow %s to %s lair, and capture %s alive!", badguy->name, HIS+badguy->gender, HIM+badguy->gender);

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 10:00

I like how the game only asks your name, not your gender.

Player's don't have genders. Only thieves have genders.

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Written by Foone🏳️‍⚧️ on 2025-01-02 at 10:01

It's a prequel to Disco Elysium, and your gender is set to COP

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Toot

Written by Kathryn Karnage on 2025-01-02 at 10:58

@foone ACAB. Assigned Cop At Birth. (Which is how I always read that acronym before remembering what it should read...)

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Descendants