Cara Menggunakan Steganography Dengan Mudah

ComputerSecurityStudent (CSS)

|FORENSICS >> Steganography |Views: 1782

(Steganography: Lesson 1) { Using Quick Stego to Embed Secret Messages Into Pictures }

1. What is Steganography¡ Steganography is the science of writing hidden messages in such a way that no one apart from the sender and intended recipient even realizes there is a hidden message.

2. What is QuickStego

¡ QuickStego lets you hide text in pictures so that only other users of QuickStego can retrieve and read the hidden secret messages. Once text is hidden in an image the saved picture is still a 'picture', it will load just like any other image and appear as it did before. The image can be saved, emailed, uploaded to the web (, the only difference will be that it contains hidden text.

3. Reference Link:

¡ http://quickcrypto.com/free-steganography-software.html

4. Legal Disclaimer¡ As a condition of your use of this Web site, you warrant to computersecuritystudent.com that you will not use this Web site for any purpose

that is unlawful or that is prohibited by these terms, conditions, and notices.

¡ In accordance with UCC § 2-316, this product is provided with "no warranties, either express or implied." The information contained is provided "as-is", with

"no guarantee of merchantability."

¡ In addition, this is a teaching website that does not condone malicious

behavior of any kind.

¡ Your are on notice, that continuing and/or using this lab outside your "own"

test environment is considered malicious and is against the law.

¡ © 2013 No content replication of any kind is allowed without express written permission.

1. Edit Virtual Machine Settings ¡ Instructions:

1. Click on PENTEST-WXP n PENTEST-WXP is a Windows XP SP3 Virtual Machine.

2. Click on Edit virtual machine

Section 0: Background Information

Section 1: Power On PENTEST-WXP

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¡

   2. Configure Network Adapter

¡ Instructions:

1. Select Network Adapter 2. Click the radio button "Bridged: Connected directly to the physical

network." 3. Click the Okay button

¡

   3. Start PENTEST-WXP

¡ Instructions: 1. Click on PENTEST-WXP 2. Click on Play virtual machine

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Penetration T...

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¡

   4. Send Ctrl+Alt+Del

¡ Instructions: 1. Virtual Machine --> Send Ctrl+Alt+Del

¡

   5. Logging into PENTEST-WXP.

¡ Instructions:

1. Username: administrator 2. Password: Provide the Password

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SSH, The Secure Shell

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¡

   6. Open a Command Prompt

¡ Instructions:

1. Start --> All Programs --> Accessories --> Command Prompt

¡

   7. Obtain PENTEST-WXP's IP Address

¡ Instructions:

1. ipconfig ¡ Note(FYI):

n In my case, PENTEST-WXP's IP Address is 192.168.1.111. n Your IP Address will be different.

¡

1. Start Firefox ¡ Instructions:

1. Start --> All Programs --> Mozilla Firefox --> Mozilla Firefox

Section 2: Download Quick Stego

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¡   

2. Download Stego ¡ Instructions:

1. Place the following address in your Firefox browser. n http://quickcrypto.com/products/QS12Setup.zip n Click here if link is dead.

2. Select the Save File radio button 3. Click the OK button

¡

   3. Open Containing Folder

¡ Instructions:

1. Right Click on QS12Setup.zip 2. Click on Open Containing Folder

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¡

   4. Extract Stego

¡ Instructions:

1. Right Click on QS12Setup.zip 2. Click on Extract All...

¡

   5. Start Extraction Wizard

¡ Instructions:

1. Click on the Next button

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¡

   6. Select a Destination

¡ Instructions:

1. Click on the Next button

¡

   7. Extraction Complete

¡ Instructions:

1. Check "Show extracted files" 2. Click on the Finish button

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¡

1. Start Installation ¡ Instructions:

1. Right Click on QS12Setup 2. Click Open

¡

   2. Open Fire - Security Warning

¡ Instructions:

1. Click Run

Section 3: Install Quick Stego

Demo Version - MagneticPdf

¡

   3. Setup - Quick Stego

¡ Instructions:

1. Click Next

¡

   4. License Agreement

¡ Instructions:

1. Click the "I accept the agreement" radio button. 2. Click the Next button

Demo Version - MagneticPdf

¡

   5. Select Destination Location

¡ Instructions:

1. Click the Next button

¡

   6. Select Additional Tasks

¡ Instructions:

1. Check Create a Desktop Icon 2. Check a Quick Launch Icon 3. Click the Next button

Demo Version - MagneticPdf

¡

   7. Ready to Install

¡ Instructions:

1. Click the Install Button

¡

   8. Completion

¡ Instructions:

1. Click the Finish Button

¡

Demo Version - MagneticPdf

1. Download Trojan Horse Picture ¡ Instructions:

1. Place the following address in your Firefox browser n http://www.computersecuritystudent.com/FORENSICS/Steganography/lesson1/index.44.jpg

2. Right Click on the picture, Select Save Image As...

¡

   2. Save As bmp

¡ Instructions:

1. Name the file "horse.bmp"n Make sure you add the .bmp extension.

2. Click the Save button.

Section 4: Download Picture

Demo Version - MagneticPdf

¡

1. Run Quick Stego ¡ Instructions:

1. Click on the Quick Stego Icon

¡

   2. Open Image

¡ Instructions:

1. Click on the Open Image button

¡

Section 5: Run Quick Stego

Demo Version - MagneticPdf

   3. Open Horse Image

¡ Instructions:

1. Navigate to the Downloads Directory 2. Select the horse.bmp image 3. Click the Open button

¡

   4. Hide Text

¡ Instructions:

1. Notice the message that say "This image does not secret text message" 2. Add a message to the black rectangle 3. Click the Hide Text button

¡

   5. Save Image

Demo Version - MagneticPdf

¡ Instructions:

1. Notice the message that say "The text message is now hidden in the image" 2. Click the Save Image button

¡

   6. Save New Image

¡ Instructions:

1. File name: horse-secret.bmp 2. Click the Save button

¡

1. Open My Computer

Section 6: Compared the images.

Demo Version - MagneticPdf

¡ Instructions:

1. Start --> My Computer

¡

   2. Compare Images

¡ Instructions:

1. Navigate to the Download directory 2. Notice that the byte size of horse-secret.bmp is much bigger than

horse.bmp.

¡

1. Open a Command Prompt ¡ Instructions:

Section 7: Proof of Lab

Demo Version - MagneticPdf

1. Start --> All Programs --> Accessories --> Command Prompt

¡

   2. Proof of Lab

¡ Proof of Lab Instructions

1. cd "My Documents\Downloads" 2. dir horse* 3. date /t 4. echo "Your Name"

n Replace the string "Your Name" with your actual name. n e.g., echo "John Gray"

5. Press the <Ctrl> and <Alt> key at the same time. 6. Press the <PrtScn> key. 7. Paste into a word document 8. Upload to Moodle

Demo Version - MagneticPdf