#asahi-re on 2022-11-22 — irc logs at oftc.irclog.whitequark.org

2022-08-14 19:46 ChanServ changed the topic of #asahi-re to: Asahi Linux: porting Linux to Apple Silicon macs | Hardware / boot process / firmware interface reverse engineering | WARNING: this channel (only) may contain binary reverse engineering discussion | RE policy: https://alx.sh/re (MANDATORY READ) | GitHub: https://alx.sh/g | Wiki: https://alx.sh/w | Logs: https://alx.sh/l/asahi-re

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18:48 <millenialhacker> Hi folks, I'm looking for a RE tip. ISP has a channel for ISP to request memory allocations and also to free them. ISP requests AP let's say 500 bytes, and AP returns in the channel the address of that memory requested.

18:48 <millenialhacker> I guess those allocations are for two things: Internal structs and data (maybe images)

18:49 <millenialhacker> but I have no idea how to approach struct RE

18:49 <millenialhacker> I can try to watch the memory but I'm not clear if that's possible with M1N1.

18:49 <millenialhacker> I want to understand how a particular memory region with a defined size changes over time so I can guess more or less what kind of struct it host

18:50 <millenialhacker> Any tip you think may be helpful on this situation?

18:50 <sven> there regmonitor or however it’s called

18:50 <sven> thatll work for normal memory as well

18:50 <sven> just call poll whenever a message between ap and isp is exchanged

18:51 <millenialhacker> sven, what poll does? it shows the changes or just the new contents?

18:51 <sven> all changes

18:51 <millenialhacker> magic!

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