Windows主機漏洞掃描工具

0x00 說明：

這是一款基於主機的漏洞掃描工具，採用多線程確保可以快速的請求數據，採用線程鎖可以在向sqlite數據庫中寫入數據避免database is locked的錯誤，採用md5哈希算法確保數據不重複插入。

本工具查找是否有公開exp的網站爲shodan,該網站限制網絡發包的速度，因而採用了單線程的方式，且耗時較長。

功能：

• 查找主機上具有的CVE
• 查找具有公開EXP的CVE
  

0x01 起因：

因爲需要做一些主機漏洞掃描方面的工作，因而編寫了這個簡單的工具。之前也查找了幾款類似的工具，如下：

vulmap:

vulmon開發的一款開源工具，原理是根據軟件的名稱和版本號來確定，是否有CVE及公開的EXP。這款Linux的工具挺好用，但是對於Windows系統層面不太適用。

windows-exp-suggester:

這款和本工具的原理一樣，嘗試使用了之後，發現它的CVEKB數據庫只更新到2017年的，並且沒有給出CVE是否有公開的EXP信息。

基於以上所以寫了這個簡單的工具,該項目在https://github.com/chroblert/WindowsVulnScan

0x02 原理：

1. 蒐集CVE與KB的對應關係。首先在微軟官網上收集CVE與KB對應的關係，然後存儲進數據庫中

2. 查找特定CVE網上是否有公開的EXP

3. 利用powershell腳本收集主機的一些系統版本與KB信息

4. 利用系統版本與KB信息搜尋主機上具有存在公開EXP的CVE

0x03 參數：

# author: JC0o0l
# GitHub: https://github.com/chroblert/
可選參數:
  -h, --help            show this help message and exit
  -u, --update-cve      更新CVEKB數據
  -U, --update-exp      更新CVEEXP數據
  -C, --check-EXP       檢索具有EXP的CVE
  -f FILE, --file FILE  ps1腳本運行後產生的.json文件

0x04 示例：

1. 首先運行powershell腳本KBCollect.ps收集一些信息

.\KBCollect.ps1

2. 將運行後產生的KB.json文件移動到cve-check.py所在的目錄

3. 安裝一些python3模塊

python3 -m pip install requirements.txt

4. 運行cve-check.py -u創建CVEKB數據庫

5. 運行cve-check.py -U更新CVEKB數據庫中的hasPOC字段

6. 運行cve-check.py -C -f KB.json查看具有公開EXP的CVE，如下：

0x05 源碼：

KBCollect.ps1:

function Get-CollectKB(){
    # 1. 蒐集所有的KB補丁
    $KBArray = @()
    $KBArray = Get-HotFix|ForEach-Object {$_.HotFixId}
    $test = $KBArray|ConvertTo-Json
    return $test
}
function Get-BasicInfo(){
    # 1. 操作系統
    # $windowsProductName = (Get-ComputerInfo).WindowsProductName
    $windowsProductName = (Get-CimInstance Win32_OperatingSystem).Caption
    # 2. 操作系統版本
    $windowsVersion = (Get-ComputerInfo).WindowsVersion
    $basicInfo = "{""windowsProductName"":""$windowsProductName"",""windowsVersion"":""$windowsVersion""}"
    return $basicInfo
    
}
$basicInfo = Get-BasicInfo
$KBList = Get-CollectKB
$KBResult = "{""basicInfo"":$basicInfo,""KBList"":$KBList}"
$KBResult|Out-File KB.json -encoding utf8

cve-check.py:

import requests
import sqlite3
import json
import hashlib
import math
import re
import threading
import time
import argparse
from pathlib import Path
# 刪除一些ssl 認證的warnging信息
requests.packages.urllib3.disable_warnings()

ThreadCount=20
DBFileName="CVEKB.db"
TableName="CVEKB"
insertSQL = []
updateSQL = []
lock = threading.Lock()
KBResult = {}
parser = argparse.ArgumentParser()
parser.add_argument("-u","--update-cve",help="更新CVEKB數據",action="store_true")
parser.add_argument("-U","--update-exp",help="更新CVEEXP數據",action="store_true")
parser.add_argument("-C","--check-EXP",help="檢索具有EXP的CVE",action="store_true")
parser.add_argument("-f","--file",help="ps1腳本運行後產生的.json文件")
args = parser.parse_args()

class CVEScanThread(threading.Thread):
    def __init__(self,func,args,name="",):
        threading.Thread.__init__(self)
        self.func = func
        self.args = args
        self.name = name 
        self.result = None

    def run(self):
        print("thread:{} :start scan page {}".format(self.args[1],self.args[0]))
        self.result = self.func(self.args[0],)
        print("thread:{} :stop scan page {}".format(self.args[1],self.args[0]))
class EXPScanThread(threading.Thread):
    def __init__(self,func,args,name="",):
        threading.Thread.__init__(self)
        self.func = func
        self.args = args
        self.name = name 
        self.result = None

    def run(self):
        print("thread:{} :start scan CVE: {},xuehao:{}".format(self.args[1],self.args[0],self.args[2]))
        self.result = self.func(self.args[0],)
        print("thread:{} :stop scan CVE: {}".format(self.args[1],self.args[0]))
    def get_result(self):
        threading.Thread.join(self)
        try:
            return self.result
        except Exception:
            return "Error"
def get_page_num(num=1,pageSize=100):
    url = "https://portal.msrc.microsoft.com/api/security-guidance/en-us"
    payload = "{\"familyIds\":[],\"productIds\":[],\"severityIds\":[],\"impactIds\":[],\"pageNumber\":" + str(num) + ",\"pageSize\":" + str(pageSize) + ",\"includeCveNumber\":true,\"includeSeverity\":false,\"includeImpact\":false,\"orderBy\":\"publishedDate\",\"orderByMonthly\":\"releaseDate\",\"isDescending\":true,\"isDescendingMonthly\":true,\"queryText\":\"\",\"isSearch\":false,\"filterText\":\"\",\"fromPublishedDate\":\"01/01/1998\",\"toPublishedDate\":\"03/02/2020\"}"
    headers = {
        'origin': "https//portal.msrc.microsoft.com",
        'referer': "https//portal.msrc.microsoft.com/en-us/security-guidance",
        'accept-language': "zh-CN",
        'user-agent': "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299",
        'accept': "application/json, text/plain, */*",
        'accept-encoding': "gzip, deflate",
        'host': "portal.msrc.microsoft.com",
        'connection': "close",
        'cache-control': "no-cache",
        'content-type': "application/json",
        }

    response = requests.request("POST", url, data=payload, headers=headers, verify = False)
    resultCount = json.loads(response.text)['count']
    return math.ceil(int(resultCount)/100)

def update_cvekb_database(num=1,pageSize=100):
    pageCount = get_page_num()
    #for i in range(1,pageCount+1):
    i = 1
    pageCount=524
    tmpCount = ThreadCount
    while i <= pageCount:
        tmpCount = ThreadCount if (pageCount - i) >= ThreadCount else pageCount - i
        print("i:{},pageCount-i:{},ThreadCount:{},PageCount:{}".format(i,pageCount-i,ThreadCount,pageCount))
        time.sleep(0.5)    
        threads = []
        print("===============================")
        for j in range(1,tmpCount + 1):
            print("更新第{}頁".format(i+j-1))
            t = CVEScanThread(update_onepage_cvedb_database,(i+j-1,j,),str(j))
            threads.append(t)
        for t in threads:
            t.start()
        for t in threads:
            t.join()
            # update_onepage_cvedb_database(num=i)
        i = i + tmpCount
        conn = sqlite3.connect(DBFileName)
        for sql in insertSQL:
            conn.execute(sql)
        conn.commit()
        conn.close()
        if tmpCount != ThreadCount:
            break
        
        
def check_POC_every_CVE(CVEName=""):
    #apiKey = ""
    #url = "https://exploits.shodan.io/api/search?query=" + CVEName + "&key=" + apiKey
    url = "https://exploits.shodan.io/?q=" + CVEName
    try:
        response = requests.request("GET",url=url,verify=False,timeout=10)
        #total = json.loads(response.text)
    except Exception as e:
        print("Error,{}".format(CVEName))
        print(e)
        return "Error"
    if "Total Results" not in response.text:
        return "False"
    else:
        return "True"
def update_onepage_cvedb_database(num=1,pageSize=100):
    url = "https://portal.msrc.microsoft.com/api/security-guidance/en-us"

    payload = "{\"familyIds\":[],\"productIds\":[],\"severityIds\":[],\"impactIds\":[],\"pageNumber\":" + str(num) + ",\"pageSize\":" + str(pageSize) + ",\"includeCveNumber\":true,\"includeSeverity\":false,\"includeImpact\":false,\"orderBy\":\"publishedDate\",\"orderByMonthly\":\"releaseDate\",\"isDescending\":true,\"isDescendingMonthly\":true,\"queryText\":\"\",\"isSearch\":false,\"filterText\":\"\",\"fromPublishedDate\":\"01/01/1998\",\"toPublishedDate\":\"03/02/2020\"}"
    headers = {
        'origin': "https//portal.msrc.microsoft.com",
        'referer': "https//portal.msrc.microsoft.com/en-us/security-guidance",
        'accept-language': "zh-CN",
        'user-agent': "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299",
        'accept': "application/json, text/plain, */*",
        'accept-encoding': "gzip, deflate",
        'host': "portal.msrc.microsoft.com",
        'connection': "close",
        'cache-control': "no-cache",
        'content-type': "application/json",
        }
    try:
        response = requests.request("POST", url, data=payload, headers=headers, verify = False)
        resultList = json.loads(response.text)['details']
    except :
        print(response.text)
    conn = sqlite3.connect(DBFileName)
    create_sql = """Create Table IF NOT EXISTS {} (
        hash TEXT UNIQUE,
        name TEXT,
        KBName TEXT,
        CVEName TEXT,
        impact TEXT,
        hasPOC TEXT)""".format(TableName)
    conn.execute(create_sql)
    conn.commit()
    conn.close()
    for result in resultList:
        KBName = result['articleTitle1'] + ";" if (result['articleTitle1'] !=  None) and result['articleTitle1'].isdigit() else ""
        KBName += result['articleTitle2'] + ";" if (result['articleTitle2'] != None) and result['articleTitle2'].isdigit() else ""
        KBName += result['articleTitle3'] + ";" if (result['articleTitle3'] != None) and result['articleTitle3'].isdigit() else ""
        KBName += result['articleTitle4'] + ";" if (result['articleTitle4'] != None) and result['articleTitle4'].isdigit() else ""
        if KBName == "":
            continue
        h1 = hashlib.md5()
        metaStr = result['name'] + KBName + result['cveNumber'] + result['impact']
        h1.update(metaStr.encode('utf-8'))
        #hasPOC = check_POC_every_CVE(result['cveNumber'])
        # 收集到所有的KB後再搜索有沒有公開的EXP
        hasPOC = ""
        sql = "INSERT OR IGNORE INTO "+TableName+" VALUES ('" + h1.hexdigest() + "','" + result['name'] + "','" + KBName + "','" + result['cveNumber'] + "','" + result['impact'] + "','" + hasPOC+"')"
        with lock:
            global insertSQL
            insertSQL.append(sql)
        # conn.execute(sql)
    # conn.commit()
    # conn.close()
    # pass

def select_CVE(tmpList=[],windowsProductName="",windowsVersion=""):
    conn = sqlite3.connect(DBFileName)
    con = conn.cursor()
    intersectionList = []
    count = 0
    for i in tmpList:
        sql = 'select distinct(CVEName) from '+ TableName+' where (name like "'+ windowsProductName+'%'+ windowsVersion + '%") and ("'+ i +'" not in (select KBName from '+ TableName +' where name like "'+ windowsProductName+'%'+windowsVersion+'%")); '
        cveList = []
        for cve in con.execute(sql):
            cveList.append(cve[0])
        if count == 0:
            intersectionList = cveList.copy()
        count +=1
        intersectionList = list(set(intersectionList).intersection(set(cveList)))
    intersectionList.sort()
    for cve in intersectionList:
        sql = "select CVEName from {} where CVEName == '{}' and hasPOC == 'True'".format(TableName,cve)
        # print(sql)
        con.execute(sql)
        if len(con.fetchall()) != 0:
            print("{} has EXP".format(cve))
    # print(intersectionList)
def update_hasPOC(key = "Empty"):
    conn = sqlite3.connect(DBFileName)
    con = conn.cursor()
    if key == "All":
        sql = "select distinct(CVEName) from {}".format(TableName)
    else:
        sql = "select distinct(CVEName) from {} where (hasPOC IS NULL) OR (hasPOC == '')".format(TableName)

    con.execute(sql)
    cveNameList = con.fetchall()
    i = 0
    count = 1
    while i < len(cveNameList):
        print("|=========={}============|".format(i))
        # tmpCount = ThreadCount if (len(cveNameList) - i) >= ThreadCount else len(cveNameList) - i
        # threads = []
        # for j in range(1,tmpCount+1):
        #     t = EXPScanThread(check_POC_every_CVE,(cveNameList[i+j][0],j,i+j,),str(j))
        #     threads.append(t)
        # for t in threads:
        #     t.start()
        # for t in threads:
        #     t.join()
        # j = 1
        # for t in threads:
        #     hasPOC = t.get_result()
        #     print(hasPOC)
        #     update_sql = "UPDATE "+TableName+" set hasPOC = '" + hasPOC + "' WHERE cveName == '" + cveNameList[i+j][0] +"';"
        #     conn.execute(update_sql)
        #     print("[+] update:{}".format(update_sql))
        #     j += 1
        # i=i+ThreadCount
        # conn.commit()
        hasPOC = check_POC_every_CVE(cveNameList[i][0])
        time.sleep(0.3)
        update_sql = "UPDATE "+TableName+" set hasPOC = '" + hasPOC + "' WHERE cveName == '" + cveNameList[i][0] +"';"
        conn.execute(update_sql)
        print(update_sql)
        count += 1
        i += 1
        if count == 10:
            conn.commit()
            print("[+]update")
            count = 1
    conn.commit()
    conn.close()
    print("Over")


if __name__ == "__main__":
    banner = """
    ========CVE-EXP-Check===============
    |       author:JC0o0l               |
    |       wechat:JC_SecNotes          |
    |       version:1.0                 |
    =====================================
    """
    print(banner)
    if (not args.check_EXP ) and (not args.update_cve) and (not args.update_exp) and args.file is None:
        parser.print_help()
    if args.update_cve:
        update_cvekb_database()
    if args.update_exp:
        dbfile=Path(DBFileName)
        if dbfile.exists():
            update_hasPOC(key="Empty")
        else:
            print("請先使用-u 創建數據庫")
            parser.print_help()
    if args.check_EXP:
        dbfile=Path(DBFileName)
        if not dbfile.exists():
            print("請先使用-u 創建數據庫，之後使用 -U 更新是否有EXP")
            parser.print_help()
            exit()
        if args.file:
            with open(args.file,"r",encoding="utf-8") as f:
                KBResult = json.load(f)
            windowsProductName = KBResult['basicInfo']['windowsProductName']
            windowsProductName = ((re.search("\w[\w|\s]+\d+[\s|$]",windowsProductName).group()).strip()).replace("Microsoft","").strip()
            windowsVersion = KBResult['basicInfo']['windowsVersion']
            print("系統信息如下:")
            print("{} {}".format(windowsProductName,windowsVersion))
            tmpKBList = KBResult['KBList']
            KBList = []
            for KB in tmpKBList:
                KBList.append(KB.replace("KB",""))
            print("KB信息如下:")
            print(KBList)
            print("EXP信息如下:")
            select_CVE(tmpList=KBList,windowsProductName=windowsProductName,windowsVersion=windowsVersion)
        else:
            print("請輸入.json文件")