C

DLL Injection via Direct Syscalls w/ SysCaller (C)

This C example demonstrates injecting a DLL into a target process using direct syscalls via the SysCaller bindings.

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Requirements

• Microsoft Visual Studio (MSVC), MinGW, or any Windows C compiler

• SysCaller.dll present in the same directory and built with required exports

• Create an empty C++ project & name it InjectDLL in vs2022

• Right click the project & go to properties

• Go to: Configuration Properties > C/C++ > Advanced

• Set Compile As = Compile as C Code (/TC)

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Usage

$ InjectDLL.exe <pid> <dll_path>

• <pid>: The process ID of the target process.
• <dll_path>: Path to the DLL you want to inject (e.g., test.dll).

Example:

$ InjectDLL.exe 4242 test.dll

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Notes

• Make sure SysCaller.dll is in the same directory as InjectDLL.exe or in your system PATH.
• The DLL path can be relative or absolute; the injector will resolve it.
• Requires appropriate privileges to open the target process and inject code.
• Tested & Works only on Windows x64.

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