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PS3 Hypervisor and Bootloader Dumped from RAM and More!


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240w ago - We are happy to report that the PS3 Hypervisor LV1 and Bootloader LV0 are dumped from the PlayStation 3's RAM after getting our SX28 Hardware a few days ago, utilizing code for glitching and mashing buttons for hours - the exploit eventually will get triggered!

We tried a few different ways to dump out the real memory - the biggest "problem" was the fact that you can't just simply use File I/O code in a kernel module. Furthermore, you can't call the lv1_peek function from user mode either.

Luckily, resident DEV kakarotoks was up to the challenge. After some trial and error (and too many PS3 crashes!) he made a kernel module which maps the "real" PS3 memory to a device in /proc. The /proc area lets the kernel and userland interact some.

Basically, the device /proc/ps3_hv_mem is created when the kernel module is inserted. Once it is inserted, you can use dd to read the device. By doing this, the device gets passed arguments, which is passed along to lv1_peek - which in turns reads out the real memory.

Be advised, don't go beyond the PS3's upper memory limit. At around 260MB, the PS3 tends to crash - it does not like trying to read beyond RAM limits! So, for usage:

First, run the exploit, and get it triggered and working - that's the hard part!

Next, download the attached file, inside are three files, a Makefile, the ps3_hv_mem.c and a pre-compiled version. Stick these in a folder, and run make. It will then compile a kernel module for you (ps3_hv_mem.ko, or use the pre-compiled one). Then simply type: sudo insmod ps3_hv_mem.ko

Enter your password and check /proc for a ps3_hv_mem entry, or your dmesg. If it is there - let the dumping begin!

You can dump out the PS3 Hypervisor and Bootloader (and the rest of the real memory) via dd. You can use the command:

dd if=/proc/ps3_hv_mem of=PS3_Memory_Dump.bin bs=1024 count=10K

That command will dump out 10485760 bytes, or about 10MB - which nicely includes the goodies like LV0 and LV1. Finally, you can also increase the count, which will increase the amount dumped (multiply by blocksize).





Stay tuned for more PS3 Hacks and PS3 CFW news, follow us on Twitter and be sure to drop by the PS3 Hacks and PS3 Custom Firmware Forums for the latest PlayStation 3 scene updates and homebrew releases!

Comments 129 Comments - Go to Forum Thread »

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GotNoUsername's Avatar
#89 - GotNoUsername - 239w ago
I just wanted say thx to all the devs good and great work keep it on and wow it seems that the PS3 scene is real moving now.

PS: is the PS3 sevice mode project still in progress ?

Raze1988's Avatar
#88 - Raze1988 - 239w ago
You guys already said that the dumps will be made available for the rest of the scene, some of the devs here will try to reverse the code and CJPC will continue to work on his other projects.

Please make clear how far you'll take it, regarding Homebrew and Backuplaunchers.

Let's say you guys find what you need to create CFW, Backuplauncher etc... Would you do it? There are possible risks with that, so I understand if you won't.

playforfun's Avatar
#87 - playforfun - 240w ago
well done for all PS3NEWS devs ! great news and i hope to see soon a way to play homebrew and emulators on PS3

skatomelato's Avatar
#86 - skatomelato - 240w ago
you are incredible!!! keep on with the good work!!!

I dump LV0 and LV1!! This is a good step, thank you guys!

aCID3D's Avatar
#85 - aCID3D - 240w ago
Great work for all of you... i think the project is for other things too... mediaplayer was fine or emu of other old systems

hope you make it real !! respect for all of you !

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