Add reverse engineering PS3 info, add patch server notes

content/reverse-engineering/_index.md

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+---
+title: "Reverse Engineering"
+---

content/reverse-engineering/ps3.md

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+---
+title: "PlayStation 3"
+---
+
+In [mid-2017 Square Enix officially ended support for the PlayStation 3 version](https://na.finalfantasyxiv.com/lodestone/topics/detail/a8db3b52eae5f11037a16ef7a637368a2ec5ed08). This guide covers how to crack open and mess with the game files, assuming you have a legitimate retail copy. Unfortunately reverse engineering PS3 games is slowly becoming a lost art, I hope to give a quick guide on how to do so.
+
+# Obtaining a copy
+
+The PS3 version of A Realm Reborn was printed on disc, so it's still [possible to buy a retail copy](https://www.amazon.com/Final-Fantasy-XIV-Realm-Reborn-Playstation/dp/B002BRZ79E) even with digital downloads being defunct. I will assume you have one and have already dumped an ISO or some other kind of mountable backup.
+
+# Dumping the contents of the disc
+
+Inside of the disc is a big folder structure, but we can ignore most of it as we're not interested in installing this on a real PS3. Refer to the diagram below to find the `INSTALL.PKG` which contains the game files:
+
+```shell
+/ PS3_GAME
+   / PKGDIR
+       / PKG00
+          > INSTALL.PKG <
+```
+
+Move this file to another location, as that's all we need from the disc.
+
+# Dumping the .PKG file
+
+This is a ["software update package" or PKG](https://psdevwiki.com/ps3/PKG_files) used for installing the game on a PS3. These are encrypted and compressed, but there is a software tool called `pkgrip` which we will use to extract it's contents. Clone and build the tool from [here](https://git.sr.ht/~redstrate/pkgrip) and then run it:
+
+```shell
+$ pkgrip INSTALL.PKG
+...
+```
+
+This process should only take a few minutes and dump the file tree into your current directory.
+
+Once the contents of the PKG file are dumped, you'll see a very similar looking file structure to the file game. There are a few excpetions:
+* The [Bink video files](https://www.radgametools.com/bnkmain.htm) under `game/movie/ffxiv` are "pam" files. No idea what those are yet.
+* The `dat0` and `index` files are suffixed with `ps3` instead of `win32`, of course.
+	* Curiously, there are `sdat` files as well. Maybe these are encrypted?
+* There are no `.exe`s because of course PS3 isn't Win32. See below for peeking into these.
+
+# Decrypting the executable files
+
+Executables on the PS3 are [signed and encrypted](https://www.psdevwiki.com/ps3/SELF_-_SPRX) so you will need a tool like the [TrueAncestor SELF Resigner](https://www.psx-place.com/resources/trueancestor-self-resigner-by-jjkkyu.33/)[^1] or scetool. It cannot be bruteforced by unself, so don't even try. If you need keys for scetool, the SELF Resigner has provided the correct keys to decrypt the game's executables.
+
+In either tool you simply put in the `.self` files and then they pop out as proper `.elf` files.
+
+## Ghidra
+
+To be able to actually decompile anything useful in [Ghidra](https://ghidra-sre.org/), make sure to select the `PowerISA-Altivec-64-32addr` language when asked (it's not recommended usually.) Make sure it's the Big Endian version, too.
+
+[^1]: Can also be found on [archive.org](https://archive.org/details/true-ancestor-self-resigner-v-1.98).

content/server/patch.md

@@ -2,6 +2,12 @@
 title: "Patch"
 ---
 
+These servers provide patch files that are consumed by the [patcher](/executable/ffxivupdater) and the [boot](/executable/ffxivboot) executables.
+
+## Console updating
+
+The PS3 and PS4 versions of the game used to use the same patch system as the Windows version. That changed [in 2018 when Square Enix moved to updating through PSN](https://na.finalfantasyxiv.com/lodestone/news/detail/2b63219b37d83601618341b5a7876d9a6c72a774). Trying to contact the patch servers with PS4 patch requests will return a 404. And of course since the PS3 version is defunct, that also doesn't work.
+
 {{< note "This documentation is incomplete." >}}
 
 # Alternative Implementations