Download .apk file from market

1. Search in market for the app you want to decompile and install it on your phone.
2. Install Astro File Manager from market (link). Open Astro > Tools > Application Manager/Backup and select the application to backup on to the SD card .
3. Mount phone as USB drive and access '\backups\apps\' folder to find the apk of target app (lets call it targetapp.apk) . Copy it to your local drive.

Decomiling apk to Dex format

1. Download Dex2Jar (link) (Android runs applications which are in Dalvik Executable (.dex) format).
2. Run the command to convert apk to jar

dex2jar targetapp.apk file(./dex2jar targetapp.apk on terminal)

File ‘targetapp.apk.dex2jar.jar’ is created

Viewing/Decompiling the Jar files to Java

Method 1 : Use JavaDecompiler (JD)

1. Open ‘targetapp.apk.dex2jar.jar’ with jd-gui (link)
2. File > Save All Sources to sava the class files in jar to java files.

Method 2: JAD

1. Extract contents of jar file on to a folder named src. Use and unarchival utility like 7zip
2. Keep ‘src’ folder in the same directory where JAD and targetapp jar is present
3. Open JAD in cmd and execute the following command
4. jad -o -r -sjava -dsrc src/**/*.class (./jad on terminal)

Now src will contain decompiled Java files ready for manual code review.

Tools Used

1. Sample app – RemoteDroid (Opensource – link)
2. Astro File Manager (Android Market – link)
3. Dex2Jar (link)
4. jd-gui (link)
5. JAD (link)

Dex2Jar Info
App Name	Dex2Jar
License	free
Type	portable code
App URL
More Info	link

This tool takes a snapshot of our files and registry (current state) and will be compared with the snapshot after installing any software.This can help us finding the leftovers and completely removing them.

Features

• Portable and Free
• Tiny app (~100KB)
• Scans both files and registry for changes
• Changes can be saved in text format

TIP:

This tool can also help in understanding the installation sequences and files distributed in our system which can be reverse engineering to create portable apps.

Download WhatChanged :

More Info at WhatChanged Homepage [via PenDriveApps]

But it will be a tedious and boring task to repeatedly follow a sequence of steps to get your volume mounted. But we can find out a simple solution for this…

So every time we have to mount a drive, we have to

• Open Truecrypt
• Select the drive where the file needs to be mounted.
• Browse the encrypted file
• Enter the long and strong password, mount the volume

Similar steps are needed while dismounting the drive as well.

Thanks to command line support of Truecrypt which is utilized here to mount the drive with few strokes.

Mount from commandline

We use the following command to mount from commandline

_TruecryptExePath_ /q background /v _EncFile_ /lx /p _Pswd_ + /b

Options

/q – Automatically perform requested actions and exit, launches the TrueCrypt Background Task (tray icon).
/v – File and path name of a TrueCrypt volume to mount (Enclosed in quotes)
/l – Driver letter to mount the volume as.
/p – The volume password (Enclosed in quotes)

_TruecryptExePath_ = Path of truecrypt exe e.g “D:\Truecrypt\Truecrypt.exe” (Enclosed in quotes)
_EncFile_ = Path of Encrypted file e.g “D:\MyStore.enc”(Enclosed in quotes)
_Pswd_ = Volume password e.g “demo123″ (Enclosed in quotes)

Dismount from commandline

_TruecryptExePath_ /q /dy

Mount from Launchy

Any application launchers like Launchy can be used to run a particular program by using shortcuts.

1. Go to Plugins tab from Launchy Options
2. Select Runner Plugin
3. Give suitable shortcut name in Name, _TruecryptExePath_ in Program and the command mentioned above in Arguments.

Launchy Runner Config

So next time to mount a volume just do Alt+Space (default Launchy hotkey) and type shortcut name.

I’ve put shortcut as ‘cryptX’ which will mount my enc file to X: drive. So all I’ve to do is type ‘crx’ and press Enter (Launchy matches ‘crx’ and finds ‘cryptX’ automatically)

Repeat this and use the command for dismount and assign it to Launchy. I’ve used ‘dcryptX’ to dismount from X: (So I type ‘dcrx’ in Launchy)

Note: If you want to mount secure truecrypt volume in command line, encrypt password using MD5 tool onto a textfile and use the same to decrypt and compare with the password you input in CLI. This method is considered to be insecure so its recommended not to use.

Update: Use the following command to enter the password onto launchy or display the actual ‘Enter Password’ screen of Truecrypt. This means you are still secure with using Launchy for Truecrypt.

_TruecryptExePath_ /q background /v _EncFile_ /lx /p $$ + /b

1. To display the truecrypt ‘Enter Password’, type ‘cryptx’ and press enter
2. To mount the volume silently without prompting the password, type ‘cryptX’ + Tab Key + _Pswd_

Operations

• Inserts a linebreak.
• Inserts a tab.
• Move the mouse with the arrow keys.
• Googles selected text, if its a URL then its opened in browser
• Change case of selected text
• Dsiplay AutoHotkey help file.
• Terminate active application
• Disables the Windows keys. For use with fullscreen games.
• Toggle active window “Always On Top”.
• Eject/Retract the CD tray
• Turn Monitor off
• Hide/Unhide the active window.
• Unhide all windows that were hidden this way.
• Toggle Window Transparency
• Pastes clipboard contents as plain text OR path of file/folder
• Toggle text wrapping to a specific width
• Quick shutdown menu
• RegEx replace on selected text.
• Appends BBCode tags for selected text
• Appends HTML tags for selected text
• Comments/Uncomments a block of AutoHotkey code.

Gallery

Have mentioned few features below.

1. Window Transparency

Toogle Window Transparency

2. Always On Top

AlwaysOnTop

3. Custom Shutdown Menu

Custom Shutdown Menu

5. HTML Tag Completion

HTML Tag Completion

6. Paste File Path

Paste File Path

7. Terminate Application

Terminate Application

AppKeys CheatSheet

Appkeys Cheatsheet (Click to Enlarge)

Download Appkeys : (Rename the file to appkeys.ahk)

Note: Check the authors post for the latest ahk file.

Tools in Context Menu

Features

• Free and Portable
• Add some built-in utilities that perform operations on files and folders.
• Customize filters for enabling tools for particular file extensions.
• Add customized commands which run external applications, copy/move to a specific folder or delete specific file types.
• Configure the “Send to…” submenu.
• Enable/disable commands which are added by other applications to the context menu.

FileMenu Tools Screenshot

Built-In Tools

• Synchronizes two folders. It is possible configure the synchronization type (unidirectional, bidirectional, etc.) and the file types which must be synchronized.
• Deletes recursively specific file types from a folder. The file types are specified with wildcards, for example: *.txt, *.t??, etc.
• Finds and replaces a text in all selected files. It is possible to use regular expressions.
• Renames all the selected elements by using some patterns.
• Deletes files which are locked by any application and cannot be deleted normally.
• Deletes definitely files and folders.
• Changes the icon assigned to the selected folder.
• Run a program with parameters typed through a dialog box.
• Open a command line window and go to selected folder.
• Splits the selected file in various parts.
• Joins the parts of a file which were previously splitted.
• Copies the selected elements to other folder.
• Moves the selected elements to other folder.
• Copies to the clipboard the name of the all selected elements.
• Copies to the clipboard the path of the all selected elements.
• Copies to the clipboard the content of the selected element. If a folder is selected, all element names that the folder contains will be copied.
• Appends the clipboard contents into the selected elements. If a folder is selected, then will be created a file in that folder with the clipboard contents.
• Displays a submenu which lets change the attributes of the selected elements. If a folder is selected, it is possible change the attributes recursively.
• Changes the creation time, the last access time and/or the last write time of the selected elements. If a folder is selected, it is possible change the time recursively.
• Registers a DLL in Windows.
• Unregisters a DLL.
• Creates a new folder into the selected folder.
• Displays the size of the folders.
• Lets you shred the selected files definitely so it is impossible to recovery the files with recovering tools.
• Sends an e-mail with the selected elements as attachments.
• Creates a new subfolder in the current folder and moves all the selected elements to this subfolder.
• Creates a new copy of the selected elements in the current folder.
• Selects the elements in the Windows Explorer by its type.

Add a new Command

Open a Program with…

Click the ‘Add Command’ button to add a new item in the FileMenu Tools menu. We have to edit the data in the ‘Properties Window’ to make the operation functional. Consider an example; we need ‘Open with Firefox’ in the menu whenever we right click any html files. This can enabled by defining ‘File Extensions’ property in the properties window. Since this new menu should appear only for the files and not for folders we choose ‘No’ for the folders property. We can also change the icon which is displayed in the right click menu.

Properties Window

Add SendTo item

To add a item in the SendTo menu, we select the ‘SendTo’ tab and click add command. For example, if we need to add DropBox folder in the ‘SendTo’ Menu we set the following properties.

SendTo Menu

TIP! Making FileMenuTools Portable

Step1 : Install FileMenu Tools in a temporary folder.

Step2: Copy all the contents in the FileMenuTools installation folder, except unins000.dat, unins000.exe, to a new folder.

Step3: Uninstall FileMenuTools application from Add/Remove programs.

Step4: Run ‘F’ileMenuTools.exe’ from the folder which was created in Step2.

Note: We cannot make this portable with Uniextract since it is not able to unpack the setup file.

FileMenu Tools Info
App Name	FileMenu Tools
License	free
Type	portable
App URL
More Info	link

Most of the applications we use everyday are available for download in Installable format and during installation, it’s dependent files are distributed across various locations in our harddisk. Moving the executable to another folder/drive might even prevent its proper functioning. And in some cases, uninstalling those apps will leave behind few files which were copied during installation. So we will minimize these problems by running portable versions of the apps.

To convert the Installer version of our app to portable we need to use an extractor. One of the best free extractor available is Universal Extractor which can help us in creating portable apps. Universal Extractor first detects the type of compression and packaging used to build the installer and extracts with the help of suitable mechanisms. It currently supports 50+ formats including Windows Installer, Inno Setup, NSIS package etc which are the most commonly used.

Extracting the Installer file with UniExtract

1. Drag and drop the Installer executable file onto the Universal Extractor App. Set the destination directory.
2. Click Ok to proceed. Now the installation package will be detected and extracted accordingly.
3. Now try to execute the app, if it works fine*, remove unnecessary files like uninstall scripts, start menu shortcuts, if any, from the extracted folder. Now you have your portable version of your app ready to be moved to your thumb drive.

Note* : Not all the applications can be converted to portable ones. Some installer package might not be understood by the uniextractor and some apps depends and run by modifying certain registry files.

Download Universal Extractor

(More info here)

Download HotKey Commander :

(This is a 15day trial app and NOT freeware)