1 files changed, 41 insertions, 0 deletions
diff --git a/utils/qbdi_mode/demo-so.c b/utils/qbdi_mode/demo-so.c
new file mode 100755
index 00000000..dd367036
--- /dev/null
+++ b/utils/qbdi_mode/demo-so.c
@@ -0,0 +1,41 @@
+#include <stdio.h>
+
+// gcc -shared -o libdemo.so demo-so.c -w
+int target_func(char *buf, int size) {
+
+  printf("buffer:%p, size:%p\n", buf, size);
+  switch (buf[0]) {
+
+    case 1:
+      puts("222");
+      if (buf[1] == '\x44') {
+
+        puts("null ptr deference");
+        *(char *)(0) = 1;
+
+      }
+
+      break;
+    case 0xff:
+      if (buf[2] == '\xff') {
+
+        if (buf[1] == '\x44') {
+
+          puts("crash....");
+          *(char *)(0xdeadbeef) = 1;
+
+        }
+
+      }
+
+      break;
+    default:
+      puts("default action");
+      break;
+
+  }
+
+  return 1;
+
+}
+