# Glitch City Laboratories Archives

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## Arbitrary Code Execution Discussion

### Pokémon Red and Blue Memory Viewer Revisited - Page 1

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#### Pokémon Red and Blue Memory Viewer Revisited

Posted by: FarruZero
Date: 2018-03-08 00:37:58
Based on this topic: https://forums.glitchcity.info/index.php?topic=7773.15, I have been working on an improvement for this ACE hack: I have made it so it starts from the last address visited and have redesigned it to look better, as can be seen in this picture:
[img]https://i.imgur.com/H2T78qZ.png[/img]
Despite my Z80 skills, I have tried reverse engineering the original ASM code by Princess Torchic ❤ so that anyone interested can learn it. I have attached my ASM file, as well as the binary code / the XY positions for the English and Spanish versions. The Spanish version starts at address $DA85 and the reason is that, for some strange reason, most RAM addresses are shifted 5 bytes in this version.
I have also included the SAV files for both versions to be tested on emulator. I have also tried it on real console.
As a matter of fact, you can skip the tedious ACE process by taking the SAV file and putting it directly to your catridge using some back-up method detailed in the following link: https://www.reddit.com/r/Gameboy/comments/4w8xjf/guide_how_to_backup_your_game_save_files/.
This procedure can be applied to the other game localizations provided you know the corresponding addresses and the Joypad Low Sensitivity address and thus modifying the ASM file. It assembles with tniASM, which is a free assembler/disassembler.

#### Re: Pokémon Red and Blue Memory Viewer Revisited

Posted by: Torchickens
Date: 2018-03-08 10:08:35
Thanks FarruZero! :)
Note I didn't make the original and that credit goes to offgao (original Japanese version) and the port by cryo (English Red/Blue version) or TheZZAZZGlitch (updated version). The only thing I did was port offgao's version to Yellow and non-English localisations. Thanks for the mention though.
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