How to use golang to implement process hiding

In daily development, we may encounter scenarios where we need to hide processes to improve security and avoid being monitored by malicious processes. Golang's cross-platform features and efficient running speed make it the preferred language for many developers to quickly develop high-quality programs. So, how to use golang to implement process hiding?

1. Process Hiding

In the Windows system, after a process is started, it will be identified by the corresponding process ID (PID) and window handle. You can use the task manager that comes with the system, etc. Tools for viewing and management. Therefore, to achieve process hiding, it is necessary to hide related identifiers such as its PID and window handle when the process is running.

2. Use golang to implement process hiding

To implement process hiding by writing programs in golang language, you need to first understand some Windows platform-related API packages and operating system-level functions. In golang, this can be achieved by encapsulating relevant APIs in C language.

1. Get process handle

There are two ways to get Windows process handle:

(1) Get the handle by enumerating system processes. First, you need to use the EnumProcesses function to obtain the PID of the currently running process in the system, and obtain the handle of each process through the OpenProcess function. Among them, the process to be hidden must be a process owned by the current user, otherwise permission problems will occur.

(2) Directly use the known process PID to obtain the handle. This method requires the use of the OpenProcess function, which can directly obtain the handle of the process to be hidden.

2. Hide process

By completing the above steps, we can get the handle of the process to be hidden. Next, you need to hide the PID and window handle of the process when the process is running.

To hide the process PID, you need to call the ShowWindow function in the user32.dll library to hide the process window. In Windows systems, the window of a process can be set to invisible, minimized or hidden, and the parameters corresponding to these states are SW_HIDE, SW_MINIMIZE and SW_SHOWMINNOACTIVE. Corresponding parameters can be selected according to specific needs.

The reference code is as follows:

package main

import (
    "syscall"
    "unsafe"
)

const (
    SW_HIDE             = 0  // 隐藏
    SW_SHOWNORMAL       = 1  // 正常
    SW_SHOWMINIMIZED    = 2  // 最小化
    SW_SHOWMAXIMIZED    = 3  // 最大化
    SW_SHOWNOACTIVATE   = 4  // 显示但不激活
    SW_SHOW             = 5  // 显示
    SW_MINIMIZE         = 6  // 最小化
    SW_SHOWMINNOACTIVE  = 7  // 最小化并显示
    SW_SHOWNA           = 8  // 显示但不激活
    SW_RESTORE          = 9  // 还原窗口
    SW_SHOWDEFAULT      = 10 // 默认显示
    SW_FORCEMINIMIZE    = 11 // 强制最小化
)

func main() {
    // 获取进程句柄
    pid := 1234   // 要隐藏的进程PID
    handle, _ := syscall.OpenProcess(syscall.PROCESS_ALL_ACCESS, false, uint32(pid))

    // 隐藏进程
    syscall.ShowWindow(syscall.Handle(handle), SW_HIDE)
}

The above is only the most basic implementation method. In actual use, you may encounter more complex situations. For example, after hiding, the process is still monitored by other programs, affecting the normal operation of the process, or in some cases, the process must be visible but not completely hidden. For these situations, special processing and optimization need to be carried out according to the specific actual situation.

3. Summary

Golang is an excellent programming language that can quickly develop efficient and high-quality programs, and its cross-platform features allow us to use the same program on different operating systems. a set of codes. Through the above steps, we have learned how to use golang to implement process hiding, so that it can have more application scenarios when we optimize the system and improve security.

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