commit 269348b447811b7cab7e1152d16442df2123a736
parent 19e8e9b369b97abf909191e5d488bc660133b2f9
Author: sin <sin@2f30.org>
Date: Tue, 25 Jun 2013 23:43:55 +0100
Add mindblow.c
Diffstat:
| A | mindblow.c | | | 91 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
1 file changed, 91 insertions(+), 0 deletions(-)
diff --git a/mindblow.c b/mindblow.c
@@ -0,0 +1,91 @@
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static void
+die(const char *s)
+{
+ fprintf(stderr, "%s: %s\n", s, strerror(errno));
+ exit(EXIT_FAILURE);
+}
+
+int
+main(int argc, char *argv[])
+{
+ int pflag, eflag;
+ int fd;
+ int c;
+ unsigned char *base;
+ struct stat buf;
+ off_t i;
+ int flag;
+ int (*fn)(void);
+
+ pflag = eflag = 0;
+ while ((c = getopt(argc, argv, "pe")) != -1) {
+ switch (c) {
+ case 'p':
+ pflag = 1;
+ break;
+ case 'e':
+ eflag = 1;
+ break;
+ default:
+ return EXIT_FAILURE;
+ }
+ }
+
+ if (argc - optind != 1) {
+ fprintf(stderr, "usage: %s [-pe] bin\n", *argv);
+ return EXIT_FAILURE;
+ }
+
+ fd = open(argv[optind], O_RDONLY);
+ if (fd < 0)
+ die("open");
+
+ if (fstat(fd, &buf) < 0)
+ die("fstat");
+
+ base = mmap(0, buf.st_size, PROT_EXEC | PROT_READ,
+ MAP_PRIVATE, fd, 0);
+ if (base == MAP_FAILED)
+ die("mmap");
+
+ flag = 0;
+ setbuf(stdout, NULL);
+ if (pflag) {
+ printf("char shellcode[] = \n\t\"");
+ for (i = 0; i < buf.st_size; ++i) {
+ if (i && !(i % 8)) {
+ printf("\"\n");
+ flag = 1;
+ }
+ if (flag) {
+ printf("\t\"");
+ flag = 0;
+ }
+ printf("\\x%02x", base[i]);
+ }
+ printf("\";\n");
+ }
+
+ if (eflag) {
+ fn = (int (*)(void))base;
+ fn();
+ }
+
+ if (munmap(base, buf.st_size) < 0)
+ die("munmap");
+
+ close(fd);
+
+ return EXIT_SUCCESS;
+}
+
