Initial commit - able to produce a working Linux POC

src/injector.rs

@@ -0,0 +1,55 @@
+use frida::{DeviceManager, Frida, ScriptHandler, ScriptOption, ScriptRuntime};
+use lazy_static::lazy_static;
+
+lazy_static! {
+	static ref FRIDA: Frida = unsafe { Frida::obtain() };
+}
+
+const FRIDA_CODE: &str = env!("FRIDA_CODE", "Please set FRIDA_CODE environment variable");
+
+#[no_mangle]
+pub fn inject(pid: u32) {
+	let device_manager = DeviceManager::obtain(&FRIDA);
+
+	if let Some(device) = device_manager.enumerate_all_devices().first() {
+		println!("[*] First device: {}", device.get_name());
+
+		let session = device.attach(pid).unwrap();
+
+		if !session.is_detached() {
+			println!("[*] Attached");
+
+			let mut script_option = ScriptOption::new()
+				// .set_name("frida-deepfreeze-rs")
+				.set_runtime(ScriptRuntime::QJS);
+			let script = session
+				.create_script(FRIDA_CODE, &mut script_option)
+				.unwrap();
+
+			script.handle_message(&mut Handler).unwrap();
+
+			script.load().unwrap();
+			println!("[*] Script loaded");
+
+			script.unload().unwrap();
+			println!("[*] Script unloaded");
+
+			session.detach().unwrap();
+			println!("[*] Session detached");
+		}
+	};
+}
+
+#[no_mangle]
+pub fn inject_self() {
+	println!("[*] Attaching to self self");
+	inject(0);
+}
+
+struct Handler;
+
+impl ScriptHandler for Handler {
+	fn on_message(&mut self, message: &str) {
+		println!("[<] {message}");
+	}
+}