- 1 year ago
DLL Injection Using Golang(CreateRemoteThread)
Performing DLL injection using Golang and the CreateRemoteThread
function involves a multi-step process. Here's an overview of the steps required:
Load the target process: Use the Windows API function
OpenProcess
to obtain a handle to the target process that you want to inject the DLL into. You'll need the process ID (PID
) and the desired access rights (PROCESS_CREATE_THREAD | PROCESS_QUERY_INFORMATION | PROCESS_VM_OPERATION | PROCESS_VM_WRITE | PROCESS_VM_READ
).Allocate memory in the target process: Use the
VirtualAllocEx
function to allocate memory in the target process. This is where you'll write the path to the DLL you want to inject.Write the DLL path into the target process: Use the
WriteProcessMemory
function to write the path of the DLL you want to inject into the allocated memory space in the target process.Get the address of the LoadLibrary function: Use the
GetProcAddress
function to retrieve the address of theLoadLibrary
function from thekernel32.dll
module.Create a remote thread: Use the
CreateRemoteThread
function to create a new thread in the target process that will execute theLoadLibrary
function, passing the address of the DLL path as the parameter.Wait for the remote thread to finish: You can use the
WaitForSingleObject
function to wait until the remote thread finishes execution.
Here's an example code snippet that demonstrates the DLL injection using Golang and the CreateRemoteThread
method:
gopackage main
import (
"log"
"syscall"
"unsafe"
)
func main() {
// Target process ID
targetPID := uint32(1234)
// Path to the DLL to be injected
dllPath := "C:\\path\\to\\your.dll"
// Load the target process
hProcess, err := syscall.OpenProcess(syscall.PROCESS_CREATE_THREAD|syscall.PROCESS_QUERY_INFORMATION|syscall.PROCESS_VM_OPERATION|syscall.PROCESS_VM_WRITE|syscall.PROCESS_VM_READ, false, targetPID)
if err != nil {
log.Fatalf("Failed to open process: %v", err)
}
defer syscall.CloseHandle(hProcess)
// Allocate memory in the target process
dllPathAddr, err := syscall.VirtualAllocEx(hProcess, 0, len(dllPath), syscall.MEM_COMMIT, syscall.PAGE_READWRITE)
if err != nil {
log.Fatalf("Failed to allocate memory: %v", err)
}
// Write the DLL path into the target process
_, err = syscall.WriteProcessMemory(hProcess, uintptr(dllPathAddr), ([]byte)(dllPath), uint(len(dllPath)))
if err != nil {
log.Fatalf("Failed to write process memory: %v", err)
}
// Get the address of the LoadLibrary function
kernel32, err := syscall.LoadLibrary("kernel32.dll")
if err != nil {
log.Fatalf("Failed to load library: %v", err)
}
loadLibraryAddr, err := syscall.GetProcAddress(kernel32, "LoadLibraryA")
if err != nil {
log.Fatalf("Failed to get LoadLibrary address: %v", err)
}
// Create a remote thread
_, err = syscall.CreateRemoteThread(hProcess, nil, 0, uintptr(loadLibraryAddr), dllPathAddr, 0, nil)
if err != nil {
log.Fatalf("Failed to create remote thread: %v", err)
}
// Wait for the remote thread to finish
syscall.WaitForSingleObject(hProcess, syscall.INFINITE)
}
Make sure to replace the targetPID