Exploit Collector
Trojan.Ransom.Ryuk.A MVID-2022-0640 Code Execution

https://4.bp.blogspot.com/-qWHV3SrNBkU/WWlu99WsXjI/AAAAAAAAIJ4/a1ff3k5st1g65kjfNuwTJpgcbLEB4bHEACLcBGAs/s1600/h116.png
Trojan.Ransom.Ryuk.A ransomware looks for and executes DLLs in its current directory. Therefore, we can potentially hijack a DLL, execute our own code, and control and terminate the malware pre-encryption. Once loaded the exploit dll will check if the current directory is "C:\Windows\System32" and if not, we grab our process ID and terminate. All basic tests were conducted successfully in a virtual machine environment.

SHA-256 | cf8ca0f9491742132b26f99723587a07bd7827506a1fb18e871a77bfbc3b9a62

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Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source: https://malvuln.com/advisory/5ac0f050f93f86e69026faea1fbb4450.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Trojan.Ransom.Ryuk.A
Vulnerability: Arbitrary Code Execution
Description: The ransomware looks for and executes DLLs in its current directory. Therefore, we can potentially hijack a vuln DLL execute our own code, control and terminate the malware pre-encryption. Once loaded the exploit dll will check if the current directory is "C:\Windows\System32", if not we grab our process ID and terminate. All basic tests were conducted successfully in a virtual machine environment.
Family: Ryuk
Type: PE32
MD5: 5ac0f050f93f86e69026faea1fbb4450
Vuln ID: MVID-2022-0640
Disclosure: 09/19/2022

Exploit/PoC:
1) Compile the following C code as "urlmon.dll"
2) Place the DLL in same directory as the ransomware
3) Optional - Hide it: attrib +s +h "urlmon.dll"
4) Run the malware

#include "windows.h"

//By malvuln
//Purpose: Exploit Ryuk
/** DISCLAIMER:
Author is NOT responsible for any damages whatsoever by using this software or improper malware
handling. By using this code you assume and accept all risk implied or otherwise.
**/

//gcc -c urlmon.c -m32
//gcc -shared -o urlmon.dll urlmon.o -m32

BOOL APIENTRY DllMain(HINSTANCE hInst, DWORD reason, LPVOID reserved){
switch (reason) {
case DLL_PROCESS_ATTACH:
MessageBox(NULL, "Ryuk\nPWNED By MALVULN", "Code Exec PoC", MB_OK);
TCHAR buf[MAX_PATH];
GetCurrentDirectory(MAX_PATH, TEXT(buf));
int rc = strcmp("C:\\Windows\\System32", TEXT(buf));
if(rc != 0){
HANDLE handle = OpenProcess(PROCESS_TERMINATE, FALSE, getpid());
if (NULL != handle) {
TerminateProcess(handle, 0);
CloseHandle(handle);
}
}
break;
}
return TRUE;
}
Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) Malvuln.com (TM).

Source:packetstormsecurity.com

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Exploit Collector
Arm Mali Race Condition

https://3.bp.blogspot.com/-Q0zmt52Iz_s/WWlvCi1SqRI/AAAAAAAAIKo/56GGQ_7zLBsvaLtYw9wmjI_Jb6z2oza2QCLcBGAs/s1600/h129.png
The Mali driver frees GPU page tables before removing the higher-level PTEs pointing to those page tables (and, therefore, also before issuing the required flushes). This means a racing memory write instruction on the GPU can write to an attacker-controlled physical address.

SHA-256 | b9314770c55b858e1768dc0c89581aba6dcd511b77abe5a7a6849771f7835386

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Source:packetstormsecurity.com

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Hacking on Medium
Hacking the CoinDCX Twitter a Hacker Promotes Fake XRP Ads

https://cdn-images-1.medium.com/max/620/1*Eqe6ly-iqa11E4dXPa23vg.png
A hacker has hacked the official Twitter account of India-based crypto exchange CoinDCX and is posting fake Ripple (XRP) promos partnered…

Continue reading on Medium »

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Hacking on Medium
JSON Deserialitzation Attack

https://cdn-images-1.medium.com/max/944/1*mED6d-57IFyWBSDhBecrZg.png
Introduction

Continue reading on Medium »

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Project Degis Testnet Task and Tutorial
https://medium.com/@GenzBIT/project-degis-testnet-task-and-tutorial-4424afdb6a84?source=rss------bug_bounty-5

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During the testnet, participants will act as underwriters or buyers to experience the whole workflow. Testnet will also simulate all…Continue reading on Medium » (https://medium.com/@GenzBIT/project-degis-testnet-task-and-tutorial-4424afdb6a84?source=rss------bug_bounty-5)

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Privilege Escalation Leads to making authenticated actions (payment processing, creating invoices..
https://x-vector.medium.com/privilege-escalation-leads-to-making-authenticated-actions-payment-processing-creating-invoices-2cf808d517ed?source=rss------bug_bounty-5

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IntroductionContinue reading on Medium » (https://x-vector.medium.com/privilege-escalation-leads-to-making-authenticated-actions-payment-processing-creating-invoices-2cf808d517ed?source=rss------bug_bounty-5)

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Privilege Escalation Leads to making authenticated actions (payment processing, creating invoices..

IntroductionContinue reading on Medium »
Read more...

Project Degis Testnet Task and Tutorial

During the testnet, participants will act as underwriters or buyers to experience the whole workflow. Testnet will also simulate all…Continue reading on Medium »
Read more...

Leverage Autorun programs - Win PrivEsc
https://www.reddit.com/r/redteamsec/comments/xjdt69/leverage_autorun_programs_win_privesc/

submitted by /u/Clement_Tino (https://www.reddit.com/user/Clement_Tino)
[link] (https://medium.com/@tinopreter/windows-privilege-escalation-4-autorun-programs-edb4a73b88a7) [comments] (https://www.reddit.com/r/redteamsec/comments/xjdt69/leverage_autorun_programs_win_privesc/)

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Dark Reading: Attacks/Breaches
Cast AI Introduces Cloud Security Insights for Kubernetes

The release augments the company's Kubernetes management platform with free, user-friendly insight on security postures, along with cost monitoring and observability.

hacking: security in practice
UK | EU students might be interested in this event

This seems like a cool event for students if anyone is interested. Great chance to network meet people, and companies, and hopefully get hired if ur from the UK, and I think the EU is good too.

https://www.eventbrite.co.uk/e/challenge-accepted-the-hackathon-tickets-421372154457

submitted by /u/Pink_Pony_Tony
[link] [comments]

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Pentest on web app priority
https://www.reddit.com/r/Pentesting/comments/xjj3mj/pentest_on_web_app_priority/

Hello everyone, I have a question about the development of a pentest script, I am a JS developer and I have never touched the development of a script on the pentesting side. My question is therefore, according to you what are the things to test, checked on the audit of a web application? Thank you for your answers submitted by /u/Croixpizza (https://www.reddit.com/user/Croixpizza)
[link] (https://www.reddit.com/r/Pentesting/comments/xjj3mj/pentest_on_web_app_priority/) [comments] (https://www.reddit.com/r/Pentesting/comments/xjj3mj/pentest_on_web_app_priority/)

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Web Reconnaissance For Bug Bounty

I know you’ll love this blog guys and this time to talk about information gathering for our targets in bug bounty, I have tools, tips so…Continue reading on Medium »
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Web Reconnaissance For Bug Bounty
https://medium.com/@noli.mtz/web-reconnaissance-for-bug-bounty-1548fcec648c?source=rss------bug_bounty-5

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