Add some development research notes and obfuscate two other headers in the UPX packed file

docs/NOTES.md

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+# Some notes to Escape from Babylon
+
+## Well known paths (Windows)
+
+* Python official install path for current user `%APPDATA\Local\Programs\Python\PythonXX`
+* NPM global current user path: `%APPDATA%\Roaming\npm\node_modules\npm\bin`
+* Go bin folder: `C:\Users\YourUsername\go\bin\go.exe`
+* Rust: `C:\Users\YourUsername\.cargo\bin\rustc.exe`
+* Haskel: `C:\Users\YourUsername\AppData\Roaming\local\bin\ghc.exe`
+* FireFox: `C:\Users\<username>\AppData\Local\Mozilla Firefox\firefox.exe`
+* Chrome: `C:\Users\<username>\AppData\Local\Google\Chrome\Application\chrome.exe`
+
+## Ultimate Packer for Executables (UPX)
+
+* <https://www.ired.team/offensive-security/defense-evasion/t1045-software-packing-upx>
+* <https://medium.com/@ankyrockstar26/unpacking-a-upx-malware-dca2cdd1a8de>
+* <https://www.mosse-security.com/2020/09/29/upx-malware-evasion-technique.html?ref=nishtahir.com>
+* <https://www.esecurityplanet.com/threats/upx-compression-detection-evasion/>
+
+## Persistence and hiding
+
+* Search for existing well known binary paths
+* Copy argv[0] to well known binary path
+* Register startup by system
+  * schtasks (cmd) for system or local user
+  * go-autostart: shortcut in start-menu
+* Write state file of persistence to somewhere...
+
+## Windows
+
+* Copy to well known current user binary path to semi related filenames
+* Run via start menu item for current user, or via `schtasks`
+  * <https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/schtasks-create>
+  * <https://github.com/emersion/go-autostart>