initial

1 files changed, 61 insertions, 0 deletions

diff --git a/other/shellkit/shellcode.c b/other/shellkit/shellcode.c
new file mode 100644
index 0000000..330fe2e
--- /dev/null
+++ b/other/shellkit/shellcode.c
@@ -0,0 +1,61 @@
+
+/* TODO: better randomness
+ */
+
+#include <sys/types.h>
+#include <time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "shellcode.h"
+
+
+unsigned long int
+random_get (unsigned long int low, unsigned long int high)
+{
+        unsigned long int       val;
+
+        if (low > high) {
+                low ^= high;
+                high ^= low;
+                low ^= high;
+        }
+
+        val = (unsigned long int) random ();
+        val %= (high - low);
+        val += low;
+
+        return (val);
+}
+
+
+void
+random_init (void)
+{
+        srandom (time (NULL));
+}
+
+
+int
+bad (unsigned char u)
+{
+        if (u == '\x00' || u == '\x0a' || u == '\x0d' || u == '\x25')
+                return (1);
+
+        return (0);
+}
+
+int
+badstr (unsigned char *code, int code_len, unsigned char *bad, int bad_len)
+{
+        int     n;
+
+        for (code_len -= 1 ; code_len >= 0 ; --code_len) {
+                for (n = 0 ; n < bad_len ; ++n)
+                        if (code[code_len] == bad[n])
+                                return (1);
+        }
+
+        return (0);
+}
+
+