Custom code on the 360
New reports coming in from various Xbox mod-scenes are saying the 360 will be a sod to mod.
Apparently the following security problems will be facing people attempting to develop modchips:
New reports coming in from various Xbox mod-scenes are saying the 360 will be a sod to mod.
Apparently the following security problems will be facing people attempting to develop modchips:
The flash is encrypted with a per-box key
The key is stored inside the CPU
The boot ROM is stored inside the CPU
Also inside the CPU is a hypervisor that verifies the running state of the kernel, making sure there is no modification (RAM checksums), else the Xbox 360 panics and blows up!
The CPU contains RAM inside of it to store the checksums
All interrupt/exception handling is done by the hypervisor
All code runs in kernel mode
The emulator for first generation games can be updated via an official Microsoft download burned to CD by the user, though the CDs’ content will be encrypted and signed with public key cryptography.
The boot ROM is stored inside the CPU.
http://www.xbox360degrees.com/2005/11/28/News/custom-code-on-the-360.html
..ειδωμεν..
The key is stored inside the CPU
The boot ROM is stored inside the CPU
Also inside the CPU is a hypervisor that verifies the running state of the kernel, making sure there is no modification (RAM checksums), else the Xbox 360 panics and blows up!
The CPU contains RAM inside of it to store the checksums
All interrupt/exception handling is done by the hypervisor
All code runs in kernel mode
The emulator for first generation games can be updated via an official Microsoft download burned to CD by the user, though the CDs’ content will be encrypted and signed with public key cryptography.
The boot ROM is stored inside the CPU.
http://www.xbox360degrees.com/2005/11/28/News/custom-code-on-the-360.html
..ειδωμεν..
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