This program is designed to load 32-bit shellcode and allow for execution or debugging. The provided binary can be found in the binaries folder with a SHA 256 of 8fe5bd48daa90fe4be9321244912d23e0ede5010d4ea72a66c66fabe66c03d2e.

You can view a demo of this tool on YouTube

This program is intended to be compiled with the C/C++ compiler from Microsoft. You can use the Developer Command Prompt after installing the free/community version to compile using cl. An example of this command would be:

cl sclauncher.c

This will produce the exectuable sclauncher.exe.

You can use the -f argument to define a path to a file that contains shellcode. This will be copied into memory and executed. Additionally, you can use the -o argument to adjust the entry point by X bytes. This allows for shellcode that does not begin execution at the beginning of the binary blob. Finally, -bp determines if a breakpoint should be inserted before the shellcode. This will be done through a 0xCC byte, which is an INT3. This allows you to run the program under a debugger, defining the command line arguments as appropriate. Inserting a breakpoint will allow the debugger to interrupt execution before the shellcode is executed. If you are not running under a debugger, do not insert a breakpoint as that will cause the program to crash.

The source code also allows for the inclusion of shellcode through an internal array, named shellcode. The bytes of shellcode must be copied into the array value and the size of the array adjusted. The program can then be compiled and executed - this mode does not support the -f argument.