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GeoHot PS3 Custom Themes Hack Demonstration Arrives


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232w 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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Raze1988's Avatar
#12 - Raze1988 - 232w ago
Well, being able to use custom strings is essential for future CFWs, but I wonder if he can also place the string somewhere else on the screen?

Tidusnake666's Avatar
#11 - Tidusnake666 - 232w ago
So this part of the ram is not signed?

PS3 News's Avatar
#10 - PS3 News - 232w ago
Perhaps some people on Mathieulh's team can do a part of the hacking that Geohot ain't able to. Do you know something we don't, boss?
Well, it's not that they can do what GeoHot can't, but they can do it faster and devote time to the more tedious things like reversals... whether they share their work with GeoHot remains to be seen though.

Tidusnake666's Avatar
#9 - Tidusnake666 - 232w ago
damn, he's smart.. I've read the whole geohot related topics here and I still wonder, whether he will share something if he'll finaly open a door to homebrew?

And he surely loves himself writing "hello geohot" and not "hello world!"

mondoparalelo's Avatar
#8 - mondoparalelo - 232w ago
I don't think it's a fake either, mainly because I don't believe he would throw his reputation away like this... he of all people like the "geohot be praised" madness goin' on. And like I'd imagined, his blog is already full of people claiming it's a fake.... ow dammit, the comment section of his blog is absolutely pointless.

But, yeah, the not sharing attitude makes it clear he wants to be the first one and get the credits all for him. For the scene itself, he only leave traces of what he's done so other devs can redo his job and the wiki, but always too late to step ahead of him.

Why share things with Mathieulh though, and only with him, that's the tricky part. Perhaps some people on Mathieulh's team can do a part of the hacking that Geohot ain't able to. Do you know something we don't, boss?

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