Q: Did you come up with the name pichaxx?Ī: No! That's the original exploit name from MrNbaYoh and I kept it out of respect (totally not because I couldn't think of anything better p).For the tutorial area and for some puzzles later on, Professor Tetra is there to guide the player players can opt to skip the tutorials and just solve the puzzles without help. Secondary exploits were also not as valuable back then because there was no seedminer to help install the hax save from a PC (you had to have another userland exploit to install it). Another possible reason is he had other exploits that were better, so he just skipped it. Q: Why didn't MrNbaYoh release this back in 2016?Ī: It's probably better to ask him, but I assume it's because PASLR (homebrew exploit mitigation) was introduced for this game right before he could release pichaxx (there was no remedy at the time). These buffers are copied in some structs and thus with a big enough length value, one can overwrite the next struct which contains a size and a destination address for a memcpy. These buffers should always be 0x14-bytes long but the game uses the size provided in the savefile to copy them. When reading the savefile, the game handles some lists of buffers that are copied to memory. Pokemon Picross - Arbitrary memcpy via unchecked size The following is taken from 3dbrew, written by MrNbaYoh:
You may also follow these online instructions if you can't run the python program in the offline version: Offline directions are provided in the Release archive. Mostly though, I had fun with Bannerbomb3 and just wanted to do another userland exploit.
Why?Ĭompared to Steelhax as a userland exploit, I can see these advantages: Without him, this release wouldn't be possible.įor US/EU/JP and old or new 3ds/2ds. It was discovered and demonstrated by MrNbaYoh back in June 2016, and he documented it in 2017. This is a new (sorta) userland exploit for Pokemon Picross on 3DS.
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