Boilerplate to develop raw and truly Position Independent Code (PIC).
Built with ♥ by Tijme Gommers – Buy me a coffee via PayPal.
Abstract • Getting started • Issues & requests • License & copyright
Sometimes you want to write Position Independent Code (PIC) in plain C (well, at least I do). Relocatable helps you do so. It allows you to write C-code that will be directly compiled into raw shellcode, which can be loaded into any process without the need for tools such as Donut or sRDI. An advantage is that the output size of the shellcode is extremely small (almost no overhead), and the shellcode remains simple.
Clone this repository first. Install the dependencies, then review the code.
Dependencies
Modify the code
Adjust the code in ./src/main.c to your needs. The included example code pops a message box.
Compiling
make
Usage
Load ./dst/relocatable.x64.bin using your shellcode loader (technique) of choice. You can also convert it to a c-code array using xxd.
xxd -i dst/relocatable.x64.bin
This outputs about a 1000 bytes. An example is included below.
unsigned char dst_relocatable_x64_bin[] = {
0x55, 0x48, 0x89, 0xe5, 0xe8, 0x55, 0x03, 0x00, 0x00, 0x90, 0x5d, 0xc3,
0x55, 0x48, 0x89, 0xe5, 0x48, 0x83, 0xec, 0x10, 0xc7, 0x45, 0xfc, 0x60,
0x00, 0x00, 0x00, 0x8b, 0x45, 0xfc, 0x65, 0x48, 0x8b, 0x00, 0x48, 0x8
-- snip --
Issues or new feature requests can be reported via the issue tracker. Please make sure your issue or feature has not yet been reported by anyone else before submitting a new one.
Copyright (c) 2025 Tijme Gommers. Relocatable is released under the GNU General Public License, version 2.0. View LICENSE.md for the full license. Relocatable was inspired by ShellcodeStdio, which is also licenced under the GNU General Public License, version 2.0.
