UNDERCODE COMMUNITY
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πŸ¦‘ Undercode Cyber World!
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πŸ¦‘Mod your own apk
#fastTips


source code: https://github.com/kaleemullah360/android-APK-Mods

1) Load APK
java -jar apktool.jar if application-name.apk

2) Decode APK
java -jar apktool.jar decode application-name.apk

3) Recompile APK
java -jar apktool.jar b application-name.apk

4) Add signature using APK Signer
java -jar apk-signer-1.8.5.jar certificate.pem key.pk8 application-name.apk

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πŸ¦‘Speedup mega download and more:

Get file details and information

Download the file

Read file and Decrypt it

πŸ„ΈπŸ„½πŸ…‚πŸ…ƒπŸ„°πŸ„»πŸ„»πŸ„ΈπŸ…‚πŸ„°πŸ…ƒπŸ„ΈπŸ„ΎπŸ„½ & πŸ…πŸ…„πŸ„½ :

first download
https://github.com/BaseMax/MegaDownloader

step
1: make api call to mega api server get info about the file with download link api return filename,filesize,download link filename is encrypted string

step 2: we download the encrypted file using the url returned in step 1 api response

step 3: after download decrypt the file

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πŸ¦‘What can XSS do?

Before we learn the use of XSS, it is necessary for us to know what XSS can do? Or what kind of harm:

Β· Alter the page, modify the content of the page

Β· Phishing

Β· Steal user cookies

Β· Hijack user (browser) sessions

Β· Hang ads, brush traffic

Β· DDoS

Β· Web page hanging horse

Β· Get ​​client information (such as UA, IP, open port)

Β· Spread XSS Worm
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πŸ¦‘How to use the system's built-in commands to get manual antivirus ?

1) Start point Before doing it yourself, remember to be prepared-use TaskList to backup system processes

New viruses have learned to use processes to hide themselves, so we'd better back up the computer's process list when the system is normal. Of course, it's best to back up without running any programs when entering Windows, so that the computer will feel abnormal in the future. You can find the process that may be a virus by comparing the process list.

Enter at the command prompt:

TaskList /fo:csv>g:zc.csv

The function of the above command is to output the current process list in csv format to the "zc.csv" file, g: is the disk you want to save to, and you can open the file with Excel.

2) When you do it yourself, you must be eye-catching-use FC to compare process list files

If you feel that your computer is abnormal, or you know that there is a virus epidemic recently, then it is necessary to check it.

Enter the command prompt and enter the following commands:

TaskList /fo:csv>g:yc.csv

Generate a list of yc.csv files of the current process, and then enter:

FC g:\zccsv g:\yc.csy

After pressing Enter, you can see the difference between the front and rear list files. Through comparison, it is found that the computer has an extra abnormal process named "Winion0n.exe" (here we take this process as an example) and not "Winionon.exe".

3) When making a judgment, remember that the evidence is conclusive-use Netstat to view open ports

For such a suspicious process, how to judge whether it is a virus? According to most viruses (especially Trojan horses) will spread the virus through the port to connect to the outside, you can check the port occupancy.

Enter at the command prompt:

Netstat -ano

The meaning of the parameters is as follows:

a: Display all port information that establishes a connection with the host

n: Display the PID code of the process of opening the port

o: Display address and port information in digital format

After you press Enter, you can see all open ports and external connection processes. Here, a process with PID 1756 (take this as an example) is the most suspicious. Its status is "ESTABLISHED". You can know that this process is "Winion0n" through the task manager. .exe", you can judge that this is an illegal connection by checking the network program running on this machine!

The meaning of the connection parameters is as follows:

LISTENINC: indicates that it is in the listening state, that is, the port is open, waiting for connection, but has not been connected yet, only the service port of the TCP protocol can be in the LISTENINC state.

ESTABLISHED means to establish a connection.

Indicates that the two machines are communicating.

TIME-WAIT means the end of this connection.

It indicates that the port has been accessed once, but the access is over. It is used to determine whether an external computer is connected to the machine.


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πŸ¦‘JavaScript email attachments may carry malicious code ?

Most malicious software in Windows is written in a compiled language such as C or C++ and spread in the form of executable files such as .exe or .dll. Other malware is written using command-line scripts, such as Windows batch or PowerShell.

The malware on the client side is rarely written in web-related languages, such as JavaScript, which is mainly interpreted by the browser. But the built-in Script Host in Windows can also directly execute .js files.

Attackers have only recently started using this technique. Last month, Microsoft warned that js attachments in malicious emails might carry viruses, and ESET’s Security Research Institute also warned that some js attachments might run Locky virus. But in both cases, JavaScript files are used as a downloader of malware. They download from other addresses and install traditional malware written in other languages ​​by default. But RAA is different. This is malware written entirely in JavaScript.

Experts in the BleepingComputer.com technical support forum said that RAA relies on CryptoJS, a secure JavaScript library, to implement its encryption process. The implementation of encryption is very solid, using the AES-256 encryption algorithm.

Once the file is encrypted, RAA will add .locked to the suffix of the original file name. Its encryption targets include: .doc, .xls, .rtf, .pdf, .dbf, .jpg, .dwg, .cdr, .psd, .cd, .mdb, .png, .lcd, .zip, .rar And .csv.

Lawrence Abrams, the founder of BleepingComputer.com, said in a blog: "In the current situation, there is no way to decrypt it except for payment.

According to the user's response, after being infected with RAA, messages in Russian will be randomly displayed, but even if its target is a Russian computer, its proliferation is only a matter of time.

It is very unusual to include JavaScript attachments in emails, so users should avoid opening such files even if they are contained in .zip archives. .js files are rarely used in other places except in websites and browsers.



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