1 files changed, 64 insertions, 0 deletions
diff --git a/crypter/simple_encoder.c b/crypter/simple_encoder.c
new file mode 100644
index 0000000..791a20f
--- /dev/null
+++ b/crypter/simple_encoder.c
@@ -0,0 +1,64 @@
+//	#DECODER=./simple_decoder.o
+//	#SHELLCODE=../hello.o
+#include <stdio.h>
+#include <string.h>
+#include <sys/time.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#ifdef _USE_CFG
+#include "simple_encoder.h"
+#else
+#error "simple_encode.h config file missing including decoder && shellcode"
+#endif
+
+#ifndef _CRYPTVAL
+#define _CRYPTVAL 200
+#endif
+
+
+int
+getnumber(int n)
+{
+  int seed;
+  struct timeval tm;
+
+  gettimeofday(&tm, NULL);
+  seed = tm.tv_sec + tm.tv_usec;
+  srandom(seed);
+  return (random() % n);
+}
+
+void
+print_code(char *data)
+{
+  int i,l = 15;
+
+  printf("\n\nunsigned long int lshellcode = %lu;\nchar shellcode[] = \n", (unsigned long int) strlen(data));
+  for (i = 0; i < strlen(data); i++) {
+    if (l >= 15) {
+      if (i) {
+        printf("\"\n");
+      }
+      printf("\t\"");
+      l = 0;
+    }
+    ++l;
+    printf("\\x%02x", ((unsigned char *)data)[i]);
+  }
+  printf("\";\n\n\n");
+}
+
+int
+main(int argc, char **argv)
+{
+//  char decoder[] = _DECODER;
+  int count, number = getnumber(_CRYPTVAL), nullbyte = 0, ldecoder = strlen(decoder), lshellcode = strlen(shellcode);
+  char *result;
+
+  printf("Using value %d to encode the shellcode.\n", number);
+  printf("*** PRINT SHELLCODE\n");
+  print_code(shellcode);
+  printf("*** PRINT DECODER\n");
+  print_code(decoder);
+}