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I find it extremely amusing that after going through all the trouble of building the malware+infrastructure to sell keys, the authors couldn't be troubled to wr
by DblPlusUngood 10y ago
I find it extremely amusing that after going through all the trouble of building the malware+infrastructure to sell keys, the authors couldn't be troubled to write the 5 lines of assembly code to enter protected mode. You can even leave paging off!
- a1k0n 10y agoYou don't even need to be in protected mode to use 32-bit registers. You can sort of bounce in and out just enough to use them with the 66 prefix. I used to do that but it's been so long I forgot how.
- commentereleven 10y agoI think you're talking about unreal mode. http://wiki.osdev.org/Unreal_Mode http://wiki.osdev.org/Unreal_Mode
- a1k0n 10y agoThat's right, I was, but on further reflection you don't need to do anything special in this case since it's just doing 32 bit math, not 32 bit addressing. EAX/EBX/etc should just work in real mode IIRC.