Feature: Add menu to build and test AES encrypted shellcode

common/obfs.h

@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <stddef.h>
+#include "aes.h"
 #pragma once
 
 class ObfsBase
@@ -100,3 +101,25 @@ public:
         }
     }
 };
+
+class ObfsAes : public ObfsBase {
+private:
+    // Please change `aes_key` and `aes_iv`.
+	unsigned char aes_key[16] = "It is a example";
+	unsigned char aes_iv[16] = "It is a example";
+
+public:
+    ObfsAes(bool genCArray = true) : ObfsBase(genCArray) { }
+
+    virtual void ObfuscateBuffer(uint8_t* buf, size_t len, uint32_t seed) {
+		struct AES_ctx ctx;
+		AES_init_ctx_iv(&ctx, aes_key, aes_iv);
+		AES_CBC_encrypt_buffer(&ctx, buf, len);
+    }
+
+    virtual void DeobfuscateBuffer(uint8_t* buf, size_t len, uint32_t seed) {
+		struct AES_ctx ctx;
+		AES_init_ctx_iv(&ctx, aes_key, aes_iv);
+		AES_CBC_decrypt_buffer(&ctx, buf, len);
+    }
+};