added details about iOS

Forensics/iOS.md

@@ -1,32 +1,84 @@
 # iOS Devices
 
+If a device has been accessed, disable the auto lock setting so it gets not
+locked while you are working on it.
+
 ## Trust Certificates
-* Exchanged between 'Trusted' devices and the charging iOS device.
+
+Exchanged between 'Trusted' devices and the charging iOS device.
+These certificates can be found under `C:\ProgramData\Apple\Lockdown`.
+
+These certificates have an expiration date of 30 days.
+
 * iTunes access to the iOS device has elevated permissions using the cert.
 * Keychain may be extracted through iTunes.
 
-## Interesting Files
+## Backups
+
+Create a backup through iTunes for investigation purposes.
+Encrypted and unencrypted backups can be chosen in the iTunes menu.
+An encrypted backup contains sensitive data like passwords, unencrypted do not
+contain this level of sensitive data.
+
+Using libimobiledevice creating a backup can be done in the following way.
+
+```sh
+idevicebackup2 -i encryption on
+idevicebackup2 backup --full ./backup
+```
+
+### Interesting Files
+
+Here is a list of interesting files a backup may contain.
+
 * `ResetCounter.plist`, hard Reset diagnostic counter
 * `com.apple.preferences.datetime.plist`
-* DB tables
+* DB tables at `/var/db`
     * Atendee
     * Task
     * Event
 * Mail
-* Safari
 * Cookies
-* Pictures
-* Addressbook
+* Pictures at `/CameraRollDomain/media/DCIM`
+* Addressbook at `HomeDomain/Library/Addressbook`
+* Calendar at `HomeDomain/Library/Calendar`
 * SMS
 * Voicemail
 * WiFi Keys
+* WiFi history at `/SystemPreferencesDomain`
+* (Safari) Web browser history and bookmarks at `HomeDomain/Library/Safari`
+* GPS history
+* Call history
+* User data at `/var/mobile`
+* Keychains at `/var/keychains`
+* Log files at `/var/log`
 
-## Backups
-Encrypted and unencrypted backups can be chosen in the iTunes menu.
+## Preference Lists (Plists)
 
+Contain settings as metadata, either structured as XML or in binary format.
+
+## Filesystem
+
+### HFS+
+
+Deprecated. Does indexing of data. Does not encrypt the partition by default.
+No integrity checksums.
+
+### APFS
+
+Full disk encryption. GPT partition. Metadata protection. Integrity checksums.
+A per app sandbox containing a virtual filesystem inside for each app environment.
+
+APFS is seperated into the following domains
+
+* **System**, OS related data which is read only
+* **Shared**, data share betweent virtual filesystems of apps by the same developer
+* **Cache**, cached data
+* **Data**, conventional filesystem data of a user
 
 ## Tools
+
 * [iFunbox](https://www.i-funbox.com/en/page-about-us.html)
 * [O.MG cable](https://shop.hak5.org/products/o-mg-cable)
-
-
+* libimobiledevice
+* 3uTools