FiveM防后门安全脚本教程 | FiveM插件网

你是否担心服务器被恶意后门入侵？本文将教你如何编写一个防后门的安全脚本，确保你的FiveM服务器安全无忧。

在FiveM服务器运营中，安全性始终是开发者关注的重点。随着越来越多的恶意脚本和后门程序的出现，如何保护服务器免受侵害成为了一个亟待解决的问题。今天，我们将通过一个名为 loader.lua 的脚本，详细讲解如何实现防后门功能，确保服务器的安全运行。

防后门脚本的核心功能

loader.lua 脚本的核心功能是通过扫描服务器中所有资源的脚本文件，检测是否存在潜在的后门代码。脚本会搜索特定的关键词，如 https://、PerformHttpRequest 等，这些关键词通常与远程代码执行或数据传输相关，是后门程序的常见特征。

代码解析与功能说明


local targetWords = {"https://", "PerformHttpRequest", "GetConvar", "print", "execute", "command", "txAdmin"}
local foundScripts = {}
local targetWords = {"https://", "PerformHttpRequest", "GetConvar", "print", "execute", "command", "txAdmin"}
local foundScripts = {}
local targetWords = {"https://", "PerformHttpRequest", "GetConvar", "print", "execute", "command", "txAdmin"}
local foundScripts = {}

targetWords 定义了需要检测的关键词列表，这些关键词通常与后门行为相关。 foundScripts 用于记录已检测到的文件路径，避免重复扫描。


function scanScriptsForResource(resourceName)
    local numFiles = GetNumResourceMetadata(resourceName, "server_script") or 0
    for j = 0, numFiles - 1 do
        local luaFilePath = GetResourceMetadata(resourceName, "server_script", j)
        if luaFilePath and not foundScripts[luaFilePath] then
            local fileContent = LoadResourceFile(resourceName, luaFilePath)
            if not fileContent then return end
            
            local lines = split(fileContent, "\n") 
            for lineNum, line in ipairs(lines) do
                for _, targetWord in ipairs(targetWords) do
                    if line:find(targetWord) then
                        foundScripts[luaFilePath] = true
                        printColored("[script:" .. resourceName .. "] Found Word: " .. targetWord, "yellow")
                        local encodedSnippet = json.encode(line) 
                        printColored("Code Snippet (JSON): " .. encodedSnippet, "lightblue")
                    end
                end
            end
        end
    end
end
function scanScriptsForResource(resourceName)
    local numFiles = GetNumResourceMetadata(resourceName, "server_script") or 0
    for j = 0, numFiles - 1 do
        local luaFilePath = GetResourceMetadata(resourceName, "server_script", j)
        if luaFilePath and not foundScripts[luaFilePath] then
            local fileContent = LoadResourceFile(resourceName, luaFilePath)
            if not fileContent then return end
            
            local lines = split(fileContent, "\n") 
            for lineNum, line in ipairs(lines) do
                for _, targetWord in ipairs(targetWords) do
                    if line:find(targetWord) then
                        foundScripts[luaFilePath] = true
                        printColored("[script:" .. resourceName .. "] Found Word: " .. targetWord, "yellow")
                        local encodedSnippet = json.encode(line) 
                        printColored("Code Snippet (JSON): " .. encodedSnippet, "lightblue")
                    end
                end
            end
        end
    end
end
function scanScriptsForResource(resourceName)
    local numFiles = GetNumResourceMetadata(resourceName, "server_script") or 0
    for j = 0, numFiles - 1 do
        local luaFilePath = GetResourceMetadata(resourceName, "server_script", j)
        if luaFilePath and not foundScripts[luaFilePath] then
            local fileContent = LoadResourceFile(resourceName, luaFilePath)
            if not fileContent then return end
            
            local lines = split(fileContent, "\n") 
            for lineNum, line in ipairs(lines) do
                for _, targetWord in ipairs(targetWords) do
                    if line:find(targetWord) then
                        foundScripts[luaFilePath] = true
                        printColored("[script:" .. resourceName .. "] Found Word: " .. targetWord, "yellow")
                        local encodedSnippet = json.encode(line) 
                        printColored("Code Snippet (JSON): " .. encodedSnippet, "lightblue")
                    end
                end
            end
        end
    end
end

scanScriptsForResource 函数用于扫描指定资源中的所有脚本文件。它会逐行检查文件内容，匹配 targetWords 中的关键词。如果检测到关键词，脚本会输出相关信息，并将文件路径记录到 foundScripts 中。


local Shared = {
    Enable = true,
    DiscordAnnounceDetection = true,
    DiscordWebhook = "", -- webhook add
    ConsolePrint = true,
    StopServer = true,
    BackdoorStrings = {
        "cipher-panel",
        "Enchanced_Tabs",
        "helperServer",
        "ketamin.cc",
        "\x63\x69\70\x68\x65\x72\x2d\x70\x61\x6e\x65\x6c\x2e\x6d\x65",
        "\x6b\x65\x74\x61\x6d\x69\x6e\x2e\x63\x63",
        "MpWxwQeLMRJaDFLKmxVIFNeVfzVKaTBiVRvjBoePYciqfpJzxjNPIXedbOtvIbpDxqdoJR"
    }
}
local Shared = {
    Enable = true,
    DiscordAnnounceDetection = true,
    DiscordWebhook = "", -- webhook add
    ConsolePrint = true,
    StopServer = true,
    BackdoorStrings = {
        "cipher-panel",
        "Enchanced_Tabs",
        "helperServer",
        "ketamin.cc",
        "\x63\x69\70\x68\x65\x72\x2d\x70\x61\x6e\x65\x6c\x2e\x6d\x65",
        "\x6b\x65\x74\x61\x6d\x69\x6e\x2e\x63\x63",
        "MpWxwQeLMRJaDFLKmxVIFNeVfzVKaTBiVRvjBoePYciqfpJzxjNPIXedbOtvIbpDxqdoJR"
    }
}
local Shared = {
    Enable = true,
    DiscordAnnounceDetection = true,
    DiscordWebhook = "", -- webhook add
    ConsolePrint = true,
    StopServer = true,
    BackdoorStrings = {
        "cipher-panel",
        "Enchanced_Tabs",
        "helperServer",
        "ketamin.cc",
        "\x63\x69\70\x68\x65\x72\x2d\x70\x61\x6e\x65\x6c\x2e\x6d\x65",
        "\x6b\x65\x74\x61\x6d\x69\x6e\x2e\x63\x63",
        "MpWxwQeLMRJaDFLKmxVIFNeVfzVKaTBiVRvjBoePYciqfpJzxjNPIXedbOtvIbpDxqdoJR"
    }
}

Shared 表定义了脚本的配置选项，包括是否启用检测、是否向Discord发送通知、是否在控制台打印检测结果等。 BackdoorStrings 是自定义的后门特征字符串，用于进一步增强检测效果。

事件监听与后门检测

脚本通过监听 onResourceStart 事件，在服务器启动时自动扫描所有资源，检测是否存在后门代码。如果检测到后门，脚本会根据配置选项执行相应的操作，如在控制台打印检测结果、向Discord发送通知，甚至直接停止服务器。


AddEventHandler('onResourceStart', function(res)
    if GetCurrentResourceName() ~= res or not Shared.Enable then return end
    
    local detectedResources = scanForBackdoors()
    if #detectedResources > 0 then
        if Shared.ConsolePrint then 
            print("^1[DEBUG]^0 Found Backdoor in: ")
            for _, v in pairs(detectedResources) do
                print("^1[DEBUG]^0 Resource: " .. v.resource .. ", Detected String: " .. v.stringFound)
            end
        end
        if Shared.DiscordAnnounceDetection and Shared.DiscordWebhook ~= "" then 
            sendToDiscord(detectedResources)
        end 
        if Shared.StopServer then 
            Citizen.Wait(2000)
            os.exit()
        end
    end
end)
AddEventHandler('onResourceStart', function(res)
    if GetCurrentResourceName() ~= res or not Shared.Enable then return end
    
    local detectedResources = scanForBackdoors()

    if #detectedResources > 0 then
        if Shared.ConsolePrint then 
            print("^1[DEBUG]^0 Found Backdoor in: ")
            for _, v in pairs(detectedResources) do
                print("^1[DEBUG]^0 Resource: " .. v.resource .. ", Detected String: " .. v.stringFound)
            end
        end

        if Shared.DiscordAnnounceDetection and Shared.DiscordWebhook ~= "" then 
            sendToDiscord(detectedResources)
        end 

        if Shared.StopServer then 
            Citizen.Wait(2000)
            os.exit()
        end
    end
end)
AddEventHandler('onResourceStart', function(res)
    if GetCurrentResourceName() ~= res or not Shared.Enable then return end
    
    local detectedResources = scanForBackdoors()

    if #detectedResources > 0 then
        if Shared.ConsolePrint then 
            print("^1[DEBUG]^0 Found Backdoor in: ")
            for _, v in pairs(detectedResources) do
                print("^1[DEBUG]^0 Resource: " .. v.resource .. ", Detected String: " .. v.stringFound)
            end
        end

        if Shared.DiscordAnnounceDetection and Shared.DiscordWebhook ~= "" then 
            sendToDiscord(detectedResources)
        end 

        if Shared.StopServer then 
            Citizen.Wait(2000)
            os.exit()
        end
    end
end)