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Oh hey, really cool article. Do you know if I'm correct in my attempt at enabling EUD? Also I was unsure how you determined that it was disabled in the OnePlus
by tripdout 1y ago
Oh hey, really cool article. Do you know if I'm correct in my attempt at enabling EUD? Also I was unsure how you determined that it was disabled in the OnePlus 6? I thought only EL3 can read qfuses in general?
And you mean the apdp partition, right? That's a weird ELF file, contains almost nothing obvious (test key sig? DEBUG mention) and doesn't seem to be any executable code which I guess makes sense, but I wonder why they made it an ELF. Is there any info on interpreting these profiles?
So that profile gives you the unauthenticated ramdump as well? Seems to be a common theme with OnePlus, messing up security features.
- ARob109 1y agoThe Debug Policy apdp partition is flashed with an ELF “mbn” file. It is possible that sections are encrypted. At the very least it is likely signed. From a security perspective, hopefully the vendor signed with a prod key and not a test key. In my experience, it is possible read to the fuses with a TrustZone TA, at least on a non-secure device.