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GeoHot PS3 Custom Themes Hack Demonstration Arrives


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228w ago - Today GeoHot has posted a few pictures (below) with the title "Custom Themes?" on the latest PlayStation 3 blog entry, however, no other useful details are available of the PS3 hack demonstration.

To speculate, it appears to illustrate modifying the PS3 GameOS XMB memory areas, but this was already known over a month ago when word first spread of the PS3 Hypervisor lv2 being dumped and reversed.

It's an RCO file edit, just like RCO edits on the PSP (almost same format too). RCO files are resource files for VSH plugins, live in the dev_flash, and aren't signed. To edit them on your system, patch your hypervisor to allow encrypted access to the partition (flash on old systems, hd on new), and mod ps3pf_storage. dev_flash is just a FAT partition, mount it in Linux and change what you'd like.

Nevertheless, it looks like progress is indeed being made editing and replacing an RCO in /dev_flash/vsh/resource/, although it would be nice if the information was made public so that other PS3 Devs in the scene could join in the fun.

From NDT: Le foto sono vere al 100% Ha modificato gli RCO dal dump della ram ma dato che non sono signed questo significa proprio poco. Si vede che stava cercando anche lui qualcosa da postare.

Rough translation: The photos are real 100% Changed the RCO by dump ram but since they have not signed this means just a little. One can see that he was looking for something to post.

Mathieulh: It's real, it has nothing to do with custom backgrounds, what he did was replace a rco file in dev_flash with one he edited (with a custom text in it).

To do that he had to mount dev_flash as rw because it is normally read only. You can do that if you know how to using his exploit under otheros.

As always, more details to come as they are available!





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Comments 42 Comments - Go to Forum Thread »

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lerobotnono's Avatar
#37 - lerobotnono - 227w ago
You can't speak in Psp terms. We probably never see CFW for Ps3, as I said in another thread before, we'll have CHW (Custom HyperVisor) before CFW, if we ever see CFW... This is not the main objective.

Really, tell me if I'm wrong. Ps3 will be hacked, a few months (or worse ^^ ) from here, but we can't ask for more.

Our job, to me, right now, is to prove that we aren't that dumb compared to Egohot. We can do better than modify an unsigned file. Keep up the good work everyone. I have trust in you.
To prove that you are not dumb ... We don't care.... The aim point is to work together more than to be able to say to yours friends I can do it too.

Lot of works is done since 1.5 month and publically communiting is not the best thing to do....

Cheers

Wonderkik's Avatar
#36 - Wonderkik - 227w ago
You can't speak in Psp terms. We probably never see CFW for Ps3, as I said in another thread before, we'll have CHW (Custom HyperVisor) before CFW, if we ever see CFW... This is not the main objective.

Really, tell me if I'm wrong. Ps3 will be hacked, a few months (or worse ^^ ) from here, but we can't ask for more.

Our job, to me, right now, is to prove that we aren't that dumb compared to Egohot. We can do better than modify an unsigned file. Keep up the good work everyone. I have trust in you.

chipsy's Avatar
#35 - chipsy - 227w ago
Just one question, could this lead to a vsh menu as we know it from the psp scene and if Geohot does make one wouldn't the hypervisor restrict him from doing certain things like change the boot up screen??

lerobotnono's Avatar
#34 - lerobotnono - 227w ago
Retails won't be able to use unsigned files. However, if I understand what's going on, the main goal is to turn Retail into full Debug.

That way, no need for CFW, since unsigned files will run natively.
I personally do still run a JAP 1.31 Firmware with PS2 proc inside and will be really happy to be able to turn it into Debug.

Waiting to read the good news soon.

Wonderkik's Avatar
#33 - Wonderkik - 227w ago
Retails won't be able to use unsigned files. However, if I understand what's going on, the main goal is to turn Retail into full Debug.

That way, no need for CFW, since unsigned files will run natively.

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