📜 Defused That SAN Flag

One more post about Microsoft's recent security updates - re changes to Kerberos and the new certificate extension containing the requester's SID.
The changes 'defuse' the impact of the flag that allows adding custom subject alternative names to any certificate (including the ones that 'actually' should be auto-enrolled).

https://elkement.blog/2022/06/13/defused-that-san-flag/

#ad #adcs #privesc #redteam

⚔️ Remote Code Injection by Abusing CreateProcess and GetEnvironmentVariable

New method of injecting code into a remote process without using WriteProcessMemory.

CreateProcess:
https://www.x86matthew.com/view_post?id=proc_env_injection

GetEnvironmentVariable:
https://x-c3ll.github.io/posts/GetEnvironmentVariable-Process-Injection/

#maldev #process #inject #pinvoke #winapi

Меньше месяца назад вышло исследование под названием "Уязвимости и атаки на CMS Bitrix". Вдохновившись этим исследованием, мой коллега Юрий (Компания BSS-Security) докрутил один из путей до RCE. Пообшавшись с разработчиками и убедившись, что уязвимость в последней версии устранена - со спокойной душой выкладываем разбор и PoC уязвимости.
Ну и как всегда рекомендация - обновляйтесь вовремя))

🧲 PoC for MS-DFSNM coerce authentication using NetrDfsRemoveStdRoot method

Spooler service disabled, RPC filters installed to prevent PetitPotam and File Server VSS Agent Service not installed but you still want to relay DC authentication to ADCS? Don't worry MS-DFSNM have your back:

🔗 https://github.com/Wh04m1001/DFSCoerce

Inspired by:

🔗 https://github.com/topotam/PetitPotam
🔗 https://github.com/ShutdownRepo/ShadowCoerce
🔗 https://github.com/leechristensen/SpoolSample

#authentication #coercion #petitpotam #dfsnm

🐙🐍 OctoPwn & OctoPwnWeb

Pentest framework running (almost) entirely in the browser via pyodide. OctoPwnWeb has been presented a41con.

Talk:
https://youtu.be/jStdrDHTmD4

Slides:
https://docs.google.com/presentation/d/1XQFYr_OBI1lrpybsLrHWTWcYNZcF_zOmGDHiIBwSMng

Tool:
https://octopwn.porchetta.industries/

Repository:
https://github.com/skelsec/octopwnweb

Readme:
https://octopwn.porchetta.industries/readme.html

Sponsor for more features:
https://porchetta.industries

#pentest #framework

How it started:

“I waited 2 years for this, rewrote impacket for this, asked cryptographers to remake algos in python for this, spent enormous time of my life to make this happen. and it's finally here this finally works and I can't find the words to express my satisfaction.” (SkelSec)

“For the record: the two crypto guys who eventually helped me in pure-python rewrite of some algos tole me to never ever use it anywhere and also they dont want to be mentioned.” (SkelSec)

🦠 Hiding C2 Traffic Using Tyk.io

A small article on the topic of hiding your malicious C2 traffic through of the TYK cloud API management service domains.
Tyk API gateway will let you manage your API ingress and routing them to different endpoints, some of them could be internally but some of them could be publicly exposed, and you can add some controls for authentication purposes while calling one of your APIs.

🔗 https://shells.systems/oh-my-api-abusing-tyk-cloud-api-management-service-to-hide-your-malicious-c2-traffic/

#c2 #rederectors #trafic #redteam

😈 How to Detect Linux Anti-Forensics Log Tampering

When forensically examining Linux systems for malicious intrusion, responders often rely on the following three artefacts to determine logins and logouts:

— /var/run/utmp – currently logged in users
— /var/run/wtmp – current, past logins and system reboot
— /var/log/btmp – bad login attempts

Of course, these artefacts are not all you can forensically investigate for malicious access, however, these will be the focus of this anti-forensics blog post.

https://www.inversecos.com/2022/06/detecting-linux-anti-forensics-log.html

#linux #log #evasion #antiforensics

🦠 Mangle

Mangle is a tool that manipulates aspects of compiled executables (.exe or DLL). Mangle can remove known Indicators of Compromise (IoC) based strings and replace them with random characters, change the file by inflating the size to avoid EDRs, and can clone code-signing certs from legitimate files. In doing so, Mangle helps loaders evade on-disk and in-memory scanners.

https://github.com/optiv/Mangle

#av #edr #memory #evasion #redteam

​​🐘 Удаленная эксплуатация переполнения кучи в веб-приложениях PHP (CVE 2022-31626)

Представлен PoC для RCE уязвимости в PHP <=7.4.29, которая может быть запущена через мошеннический сервер MySQL/MariaDB.

Ссылка на PoC

#web #rce

📡 Relaying to ADFS Attacks

Praetorian has developed and is releasing an open source tool ADFSRelay and NTLMParse, which can be used for performing relaying attacks targeting ADFS and analyzing NTLM messages respectively.

https://www.praetorian.com/blog/relaying-to-adfs-attacks/

#ad #adfs #relay #ntlm

😡 Brute-Ratel-C4-Community-Kit

This repository contains scripts, configurations and deprecated payload loaders for Brute Ratel C4. Anything which is added in the deprecated folder will not be a part of the latest release of BRc4.

https://github.com/paranoidninja/Brute-Ratel-C4-Community-Kit

#c2 #bof #shellcode #injection

🔎 ldeep

In-depth LDAP enumeration utility.

https://github.com/franc-pentest/ldeep

Install:

$ pip3 install ldeep

Usage Example:

Enumerate ACEs of the AdminSDHolder object

$ ldeep ldap -s 'ldap://10.10.13.37' -d megacorp -u j.doe -p 'Passw0rd!' -b 'CN=System,DC=megacorp,DC=local' sddl AdminSDHolder | jq '.[].nTSecurityDescriptor.DACL.ACEs[] | select(.Type | contains("Allowed")) | .SID + " :: " + .Type'

Convert SID to name

$ ldeep ldap -s 'ldap://10.10.13.37' -d megacorp -u j.doe -p 'Passw0rd!' from_sid <SID>

#ad #ldap

🐾 ChopHound

Some scripts for dealing with any challenges that might arise when importing (large) JSON datasets into BloodHound.

Blog post:
https://blog.bitsadmin.com/blog/dealing-with-large-bloodhound-datasets

Scripts:
https://github.com/bitsadmin/chophound

#ad #bloodhound #cypher

⚔️ Maelstrom: C2 Development Blog Series

We wanted to explore how C2s function in 2022, what evasive behavior's are required, and what a minimum viable C2 looks like in a world of sophisticated endpoint protection.

Which gave us our goals for this blog series:

- Document the internals of a minimum viable C2:
* What are the ideas behind popular C2 implementations?
* What are their goals and objectives?
- Analyse and implement evasive behaviors:
* What is required to run on a contemporary Windows system?
* What is required to bypass up-to-date, modern endpoint protection?
- Produce a proof-of-concept C2:
* What is the minimum viable C2 for an operator in 2022?
* What is required to detect this minimum viable C2?

🔗 Maelstrom: An Introduction
🔗 Maelstrom: The C2 Architecture
🔗 Maelstrom: Building the Team Server
🔗 Maelstrom: Writing a C2 Implant
🔗 Maelstrom: EDR Kernel Callbacks, Hooks, and Call Stacks

#maldev #c2

🐞 Malware Development for Dummies

In the age of EDR, red team operators cannot get away with using pre-compiled payloads anymore. As such, malware development is becoming a vital skill for any operator. Getting started with maldev may seem daunting, but is actually very easy. This workshop will show you all you need to get started!

Slides:
https://github.com/chvancooten/maldev-for-dummies/tree/main/Slides

Exercises:
https://github.com/chvancooten/maldev-for-dummies/tree/main/Exercises

#maldev #csharp #nim

🔴 Reversing BRc4 Red-Teaming Tool Used by APT 29

On May 19, a malicious payload associated with Brute Ratel C4 (BRc4) was uploaded to VirusTotal, where it received a benign verdict from all 56 vendors that evaluated it. Beyond the obvious detection concerns, we believe this sample is also significant in terms of its malicious payload, command and control (C2), and packaging.

Blog post:
https://unit42.paloaltonetworks.com/brute-ratel-c4-tool/

Reversing the Malware by IppSec:
https://youtu.be/a7W6rhkpVSM

#maldev #c2 #brc4

#ad #rpc #ntlm #privesc

[ Coercer ]

atricle: https://github.com/p0dalirius/windows-coerced-authentication-methods
There is currently 15 known methods in 5 protocols.

tool: https://github.com/p0dalirius/Coercer
A python script to automatically coerce a Windows server to authenticate on an arbitrary machine through 9 methods.