From 126bfccec22e617524469f7e092ad3647a695384 Mon Sep 17 00:00:00 2001
From: makefu <github@syntax-fehler.de>
Date: Thu, 12 Mar 2020 11:06:52 +0100
Subject: init kleinanzeigen-api post

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+Finding the Ebay Kleinanzeigen Application Password
+###################################################
+:date: 2019-03-12 23:42
+:tags: disassembly,kleinanzeigen,ebay
+
+
+To use the ebay kleinanzeigen api (e.g. with `ebk-client <https://github.com/tejado/ebk-client/>`_) an application username and an application
+password is required.
+However there are only two options to get this:
+
+1. send a mail to <pre>api@ebay-kleinanzeigen.de</pre> and never get a response or
+2. find the working credentials yourself in applications which must store the
+   credentials
+
+This blog post describes the second approach, however you will have to to the
+steps yourself and maybe even learn something as the "answer" is not stored here.
+If you are unwilling to follow the steps, you are probably not worthy to use
+the ebay kleinanzeigen api.
+
+Preparation
+-----------
+
+To get started you will need to install the following tools:
+
+1. `apktool <https://ibotpeaches.github.io/Apktool/>`_
+2. `dex2jar <https://github.com/pxb1988/dex2jar>`_
+3. `java decompiler <http://java-decompiler.github.io/>`_
+
+Getting the application
+-----------------------
+
+You will have to get the ebay kleinanzeigen apk from somewhere, i chose to
+`duckduckgo "ebay kleinanzeigen apk" <https://duckduckgo.com/?q=ebay+kleinanzeigen+apk&ia=web>`_
+
+Download the app and put it in the current working directory.
+
+Unpacking the apk layers
+------------------------
+
+I use **apktool** and **dex2jar** to unpack the apk
+
+.. code-block:: bash
+
+    apktool d -r -s eBay_Kleinanzeigen.apk
+    cd eBay_Kleinanzeigen
+    d2j-dex2jar ./classes.dex --force
+
+Finding the credentials
+-----------------------
+
+Once unpacked we simply have to find the credentials somewhere in the code.
+
+At first we open **./classes-dex2jar.jar** with the java disassembler:
+
+.. code-block:: bash
+
+    jd-gui ./classes-dex2jar.jar
+
+and now we can use the search to find the loot:
+
+.. image:: /img/jd-gui_search.png
+  :width: 500px
+  :alt: jd-gui search window
+  :target: /img/jd-gui_search.png
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