mirror of
https://github.com/shadow1ng/fscan.git
synced 2026-09-22 03:10:42 +08:00
333 lines
8.2 KiB
Go
333 lines
8.2 KiB
Go
package Plugins
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
"fmt"
|
|
"net"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
mssql "github.com/denisenkom/go-mssqldb"
|
|
"github.com/shadow1ng/fscan/Common"
|
|
)
|
|
|
|
// MSSQLProxyDialer 自定义dialer结构体
|
|
type MSSQLProxyDialer struct {
|
|
timeout time.Duration
|
|
}
|
|
|
|
// DialContext 实现mssql.Dialer接口，支持socks代理
|
|
func (d *MSSQLProxyDialer) DialContext(ctx context.Context, network, addr string) (net.Conn, error) {
|
|
return Common.WrapperTcpWithContext(ctx, network, addr)
|
|
}
|
|
|
|
// MssqlCredential 表示一个MSSQL凭据
|
|
type MssqlCredential struct {
|
|
Username string
|
|
Password string
|
|
}
|
|
|
|
// MssqlScanResult 表示MSSQL扫描结果
|
|
type MssqlScanResult struct {
|
|
Success bool
|
|
Error error
|
|
Credential MssqlCredential
|
|
}
|
|
|
|
// MssqlScan 执行MSSQL服务扫描
|
|
func MssqlScan(info *Common.HostInfo) error {
|
|
if Common.DisableBrute {
|
|
return nil
|
|
}
|
|
|
|
target := fmt.Sprintf("%v:%v", info.Host, info.Ports)
|
|
Common.LogDebug(fmt.Sprintf("开始扫描 %s", target))
|
|
|
|
// 设置全局超时上下文
|
|
ctx, cancel := context.WithTimeout(context.Background(), time.Duration(Common.GlobalTimeout)*time.Second)
|
|
defer cancel()
|
|
|
|
// 构建凭据列表
|
|
var credentials []MssqlCredential
|
|
for _, user := range Common.Userdict["mssql"] {
|
|
for _, pass := range Common.Passwords {
|
|
actualPass := strings.Replace(pass, "{user}", user, -1)
|
|
credentials = append(credentials, MssqlCredential{
|
|
Username: user,
|
|
Password: actualPass,
|
|
})
|
|
}
|
|
}
|
|
|
|
Common.LogDebug(fmt.Sprintf("开始尝试用户名密码组合 (总用户数: %d, 总密码数: %d, 总组合数: %d)",
|
|
len(Common.Userdict["mssql"]), len(Common.Passwords), len(credentials)))
|
|
|
|
// 使用工作池并发扫描
|
|
result := concurrentMssqlScan(ctx, info, credentials, Common.Timeout, Common.MaxRetries)
|
|
if result != nil {
|
|
// 记录成功结果
|
|
saveMssqlResult(info, target, result.Credential)
|
|
return nil
|
|
}
|
|
|
|
// 检查是否因为全局超时而退出
|
|
select {
|
|
case <-ctx.Done():
|
|
Common.LogDebug("MSSQL扫描全局超时")
|
|
return fmt.Errorf("全局超时")
|
|
default:
|
|
Common.LogDebug(fmt.Sprintf("扫描完成，共尝试 %d 个组合", len(credentials)))
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// concurrentMssqlScan 并发扫描MSSQL服务
|
|
func concurrentMssqlScan(ctx context.Context, info *Common.HostInfo, credentials []MssqlCredential, timeoutSeconds int64, maxRetries int) *MssqlScanResult {
|
|
// 使用ModuleThreadNum控制并发数
|
|
maxConcurrent := Common.ModuleThreadNum
|
|
if maxConcurrent <= 0 {
|
|
maxConcurrent = 10 // 默认值
|
|
}
|
|
if maxConcurrent > len(credentials) {
|
|
maxConcurrent = len(credentials)
|
|
}
|
|
|
|
// 创建工作池
|
|
var wg sync.WaitGroup
|
|
resultChan := make(chan *MssqlScanResult, 1)
|
|
workChan := make(chan MssqlCredential, maxConcurrent)
|
|
scanCtx, scanCancel := context.WithCancel(ctx)
|
|
defer scanCancel()
|
|
|
|
// 启动工作协程
|
|
for i := 0; i < maxConcurrent; i++ {
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
for credential := range workChan {
|
|
select {
|
|
case <-scanCtx.Done():
|
|
return
|
|
default:
|
|
result := tryMssqlCredential(scanCtx, info, credential, timeoutSeconds, maxRetries)
|
|
if result.Success {
|
|
select {
|
|
case resultChan <- result:
|
|
scanCancel() // 找到有效凭据，取消其他工作
|
|
default:
|
|
}
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
|
|
// 发送工作
|
|
go func() {
|
|
for i, cred := range credentials {
|
|
select {
|
|
case <-scanCtx.Done():
|
|
break
|
|
default:
|
|
Common.LogDebug(fmt.Sprintf("[%d/%d] 尝试: %s:%s", i+1, len(credentials), cred.Username, cred.Password))
|
|
workChan <- cred
|
|
}
|
|
}
|
|
close(workChan)
|
|
}()
|
|
|
|
// 等待结果或完成
|
|
go func() {
|
|
wg.Wait()
|
|
close(resultChan)
|
|
}()
|
|
|
|
// 获取结果，考虑全局超时
|
|
select {
|
|
case result, ok := <-resultChan:
|
|
if ok && result != nil && result.Success {
|
|
return result
|
|
}
|
|
return nil
|
|
case <-ctx.Done():
|
|
Common.LogDebug("MSSQL并发扫描全局超时")
|
|
scanCancel() // 确保取消所有未完成工作
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// tryMssqlCredential 尝试单个MSSQL凭据
|
|
func tryMssqlCredential(ctx context.Context, info *Common.HostInfo, credential MssqlCredential, timeoutSeconds int64, maxRetries int) *MssqlScanResult {
|
|
var lastErr error
|
|
|
|
for retry := 0; retry < maxRetries; retry++ {
|
|
select {
|
|
case <-ctx.Done():
|
|
return &MssqlScanResult{
|
|
Success: false,
|
|
Error: fmt.Errorf("全局超时"),
|
|
Credential: credential,
|
|
}
|
|
default:
|
|
if retry > 0 {
|
|
Common.LogDebug(fmt.Sprintf("第%d次重试: %s:%s", retry+1, credential.Username, credential.Password))
|
|
time.Sleep(500 * time.Millisecond) // 重试前等待
|
|
}
|
|
|
|
// 创建连接超时的上下文
|
|
connCtx, cancel := context.WithTimeout(ctx, time.Duration(timeoutSeconds)*time.Second)
|
|
success, err := MssqlConn(connCtx, info, credential.Username, credential.Password)
|
|
cancel()
|
|
|
|
if success {
|
|
return &MssqlScanResult{
|
|
Success: true,
|
|
Credential: credential,
|
|
}
|
|
}
|
|
|
|
lastErr = err
|
|
if err != nil {
|
|
// 检查是否需要重试
|
|
if retryErr := Common.CheckErrs(err); retryErr == nil {
|
|
break // 不需要重试的错误
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return &MssqlScanResult{
|
|
Success: false,
|
|
Error: lastErr,
|
|
Credential: credential,
|
|
}
|
|
}
|
|
|
|
// MssqlConn 尝试MSSQL连接
|
|
func MssqlConn(ctx context.Context, info *Common.HostInfo, user string, pass string) (bool, error) {
|
|
host, port, username, password := info.Host, info.Ports, user, pass
|
|
timeout := time.Duration(Common.Timeout) * time.Second
|
|
|
|
// 构造连接字符串
|
|
connStr := fmt.Sprintf(
|
|
"server=%s;user id=%s;password=%s;port=%v;encrypt=disable;",
|
|
host, username, password, port,
|
|
)
|
|
|
|
// 检查是否需要使用socks代理
|
|
if Common.Socks5Proxy != "" {
|
|
// 使用自定义dialer创建连接器
|
|
connector, err := mssql.NewConnector(connStr)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
// 设置自定义dialer
|
|
connector.Dialer = &MSSQLProxyDialer{
|
|
timeout: time.Duration(Common.Timeout) * time.Millisecond,
|
|
}
|
|
|
|
// 使用连接器创建数据库连接
|
|
db := sql.OpenDB(connector)
|
|
defer db.Close()
|
|
|
|
// 设置连接参数
|
|
db.SetConnMaxLifetime(timeout)
|
|
db.SetConnMaxIdleTime(timeout)
|
|
db.SetMaxIdleConns(0)
|
|
db.SetMaxOpenConns(1)
|
|
|
|
// 通过上下文执行ping操作，以支持超时控制
|
|
pingCtx, pingCancel := context.WithTimeout(ctx, timeout)
|
|
defer pingCancel()
|
|
|
|
errChan := make(chan error, 1)
|
|
go func() {
|
|
errChan <- db.PingContext(pingCtx)
|
|
}()
|
|
|
|
// 等待ping结果或者超时
|
|
select {
|
|
case err := <-errChan:
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
return true, nil
|
|
case <-ctx.Done():
|
|
// 全局超时或取消
|
|
return false, ctx.Err()
|
|
case <-pingCtx.Done():
|
|
if pingCtx.Err() == context.DeadlineExceeded {
|
|
// 单个连接超时
|
|
return false, fmt.Errorf("连接超时")
|
|
}
|
|
return false, pingCtx.Err()
|
|
}
|
|
}
|
|
|
|
// 使用标准连接方式
|
|
db, err := sql.Open("mssql", connStr)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
defer db.Close()
|
|
|
|
// 设置连接参数
|
|
db.SetConnMaxLifetime(timeout)
|
|
db.SetConnMaxIdleTime(timeout)
|
|
db.SetMaxIdleConns(0)
|
|
db.SetMaxOpenConns(1)
|
|
|
|
// 通过上下文执行ping操作，以支持超时控制
|
|
pingCtx, pingCancel := context.WithTimeout(ctx, timeout)
|
|
defer pingCancel()
|
|
|
|
errChan := make(chan error, 1)
|
|
go func() {
|
|
errChan <- db.PingContext(pingCtx)
|
|
}()
|
|
|
|
// 等待ping结果或者超时
|
|
select {
|
|
case err := <-errChan:
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
return true, nil
|
|
case <-ctx.Done():
|
|
// 全局超时或取消
|
|
return false, ctx.Err()
|
|
case <-pingCtx.Done():
|
|
if pingCtx.Err() == context.DeadlineExceeded {
|
|
// 单个连接超时
|
|
return false, fmt.Errorf("连接超时")
|
|
}
|
|
return false, pingCtx.Err()
|
|
}
|
|
}
|
|
|
|
// saveMssqlResult 保存MSSQL扫描结果
|
|
func saveMssqlResult(info *Common.HostInfo, target string, credential MssqlCredential) {
|
|
successMsg := fmt.Sprintf("MSSQL %s %v %v", target, credential.Username, credential.Password)
|
|
Common.LogSuccess(successMsg)
|
|
|
|
// 保存结果
|
|
vulnResult := &Common.ScanResult{
|
|
Time: time.Now(),
|
|
Type: Common.VULN,
|
|
Target: info.Host,
|
|
Status: "vulnerable",
|
|
Details: map[string]interface{}{
|
|
"port": info.Ports,
|
|
"service": "mssql",
|
|
"username": credential.Username,
|
|
"password": credential.Password,
|
|
"type": "weak-password",
|
|
},
|
|
}
|
|
Common.SaveResult(vulnResult)
|
|
}
|