Update index.md

writeups/ctflearn/2023/1/index.md

@@ -17,17 +17,29 @@ OS : Windows 10
 
 Procedure :<br>
 1) Download the apk (and all the Tools if you do not have)<br>
+
 ![](img/roomlayout.png)
-2) Use Tool [2] and review source code directly into "com.example.secondapp" > "MainActivity"<br>
+
+3) Use Tool [2] and review source code directly into "com.example.secondapp" > "MainActivity"<br>
+
 ![](img/jadxgui.png)
+
 3a) You will see Flag string at the bottom  (line 26) <code>((TextView) findViewById(R.id.textView)).setText("Success! CTFlearn{" + editText.getText().toString() + "_is_not_secure!}");</code><br>
+
 ![](img/jadxgui-mainactivity-line26.png)
+
 3b) in upper line you will see hash code (line 25) <code>if (DigestUtils.md5Hex(editText.getText().toString()).equalsIgnoreCase("b74dec4f39d35b6a2e6c48e637c8aedb")) {</code><br>
+
 ![](img/jadxgui-mainactivity-line25.png)
+
 4) use Tools [3] to identfy the hash and find out it is MD5<br>
+
 ![](img/hash-identify.png)
+
 5) use Tools [4] to decrypt MD5 code in 3b)<br>
+
 ![](img/hash-decrypt.png)
+
 6) You will get the password<br>
 7) use Tools [1] to open the apk<br>
 8) enter the password and you will get the flag<br>