Security Pills - Issue 4
Mixers reaches an all-time high, How to Steal $100M, How did MetaMask come to life?
Release Date: 18 Jul 2022 | Issue: 4 | Subscribe
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News: Cryptocurrency sent to mixers reaches an all-time high thanks to illicit activity, Chinese police exposed 1 billion people's data in unprecedented leak.
Articles: Abusing Azure hybrid workers for privilege escalation, Introducing Pretender, Can a project have access to a user's NFT after mint?, Decompiler Explorer, Researching access tokens for fun and knowledge, How did Metamask come to life?, Multi-factor authentication in-the-wild bypass methods, Attacking Active Directory: 0 to 0.9.
Vulnerabilities and Bug Bounties: Exploiting arbitrary object instantiations in PHP without Custom Classes, Remote code execution via Prototype Pollution in Blitz.js, Two novel crypto wallet exploits, How to steal $100 from Flawless Smart Contracts, Hacking Larksuite for 1 month.
Resources: Bug Bounty Redacted #5, Silk Road: The Amazon of Drugs, The case for an American-owned NSO Group, How to Predict Random Numbers, Docker enumeration (deepce), Vulnerable Active Directory playground (GOAD), Cairo bytecode disassembler (thoth).
Cryptocurrency sent to mixers reaches an all-time high thanks to illicit activityChainalysis researchers have seen an increase in illicit cryptocurrency moving to mixers. The report explains that significant amounts of cryptocurrencies sent to mixers come from sanctioned entities, most of which are connected to actors based in Russia and
6/ Illicit addresses account for 23% of funds sent to mixers so far in 2022, up from 12% in 2021. Here we examine the types of criminal activity those illicit actors are associated with.
— Chainalysis (@chainalysis)
Jul 14, 2022
North Korean hackers have been accused of leading a wave of attacks on cryptocurrency platforms and have been caught laundering significant tranches of funds through mixers.
Chainalysis said Russian darknet market Hydra, which was sanctioned in April 2022, led the way in their data set, accounting for 50% of all funds moving to mixers from sanctioned entities this year.
Chinese police exposed 1 billion people's data in unprecedented leakAttackers have grabbed data of almost 1 billion Chinese citizens from a Shanghai police database and attempted to extort the department for about $200,000. The trove of data contains names, phone numbers, government ID numbers, and police reports.
The scale of the breach is immense and it is the first of this size to hit the Chinese government, which is notorious for hoarding massive amounts of data, not only about its own citizens, but about people all over the world. China was memorably responsible for the United States Office of Personnel Management breach and Equifax credit bureau breach, among many others worldwide.
Abusing Azure hybrid workers for privilege escalation #azure #privescThe NetSPI team published few months ago a blog post where they detailed a privilege escalation scenario by abusing Azure hybrid workers. In this second article, the dig a little deeper and explain how they used an undocumented internal API to poll information about the Automation Account. The issues identified could allow any Azure user with the Subscription Reader role to dump saved credentials and certificates from Automation Accounts, allowing a privilege escalation.
Introducing Pretender - Your new sidekick for relaying attacks #red-teamRedTeam Pentesting has released another open-source tool to obtain a machine-in-the-middle position inside Windows networks by implementing local name resolution spoofing using the mDNS, LLMNR, and NetBIOS-NS protocols as well as a DHCPv6 DNS takeover attack.
DHCPv6 DNS Takeover
Can a project have access to a user's NFT after mint? #nft #smart-contractA popular NFT project called 'The Saudis' started their free mint campaign where whitelisted users could mint their NFTs for free. However, a user found a security issue and dumped an important quantity of NFT into the market shortly after the mint event finished. The team behind the NFT project were able to lock the user's account and modify the contract to remove a sizable number of NFTs from the user's control and return the affected NFTs back to the community.The article explores the EIP-2535 protocol (diamond protocol) and how it was used by the team to modify the contract's functionalities.
Decompiler Explorer #reverse-engineeringBinary Ninja has published an internal tool in the form of web service that lets you compare the output of different compilers on small executables. Among the decompilers you can find angr, BinaryNinja, Ghidra or Hex-Rays. They also. have released the entire project as open source on GitHub.
Output obtained using different decompilers
Researching access tokens for fun and knowledge #azureRindert Kramer dives into JSON Web Tokens, Azure Key Vaults and compound identities, exploring JWT's without the managed identity feature.
How Did MetaMask Come To Life? The Origin Story, Revealed #smart-contract #metamaskDan Finlay and Aaron Davis, founders of MetaMask gave their first interview together on the origins behind the company.
Attacking Active Directory: 0 to 0.9 #active-directoryI recently found this article describing how attackers approach Active Directory (AD) instances, reviewing the different aspects of AD and those terms that every pentester should control in order to understand the attacks that can be performed.
Heap Overflows on iOS ARM64: Heap Grooming, Use-After-Free #mobile #iOS #exploitingThe third part of this series discusses heap overflows and exploiting use-after-free (UAF) bugs and how they can be used to achieve greater impact. The author has also published a first part on how to reverse engineer and patch an iOS application, and how to reverse engineer and exploit and iOS binary through ARM64 ROP chains.
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Vulnerabilities and Bug Bounties
Exploiting Arbitrary Object Instantiations in PHP without Custom ClassesThe article explores unauthenticated arbitrary object instantiation vulnerabilities in LAM (LDAP Account Manager). PHP's arbitrary object instantiation are vulnerabilities in which an attacker can create arbitrary object, achieving remote code execution.
Vulnerabilities chained to achieve RCE
Two Novel Crypto Wallet ExploitsBack in June, Unciphered unveiled three novel exploits impacting crypto wallets Electrum Bitcoin Wallet, Trezor One and Ethereumwallet.com. Unciphered demonstrated a vulnerability in the form of an adversarial QR code targeting Electrum wallets running on Windows 10, which facilitated authenticated token capture, allowing an attacker to access a compromised wallet and all crypto currencies contained therein.Additionally, they also demonstrated a bruteforce attack affecting Trezor One wallets where their team successfully set the world record for the fastest time to crack a new and fully patched Trezor one in just under 30 minutes.
We hacked Larksuite for 1 month and here is what we foundSnapsec targeted Lark Technologies during a month identifying 14 different vulnerabilities ranging from cross-site scripting to privilege escalation. This article summarizes the approach they took and the technical details on the vulnerabilities that were identified.
🙏 Support us
AssetNote: Bug Bounty Redacted #5 — The fifth episode of Bug Bounty Redacted is out, this time explaining a subdomain takeover & a logic bug leading to DoS.
PwnFunction: How to Predict Random Numbers — In this episode PwnFunction will break the Math.random method in JavasScript with z3.
How to write a BANGER blogpost with STOK — So you did some awesome research, wrote a pretty epic write-up and now you want to share the results with the world! Time to hack the Google algorithm! In this session Hacker/Creative STÖK will guide you through the do's and don'ts of search engine optimization, the importance of a personal brand and how to maximize your views. Welcome to content creation for security professionals!
deepce — Docker enumeration, escalation of privileges and container escapes.
deploy-goad — Script to deploy GOAD, a pentest active directory lab project to use to practice usual attack techniques.
GraphCrawler — Automated testing tool for any GraphQL endpoint.
thoth — A Cairo/starknet bytecode disassembler
Malicious Life - Silk Road: The Amazon of drugs — Ross Ulbricht always had a thing with testing his limits, and so, in 2010, he came up with the idea to build a truly free market: a website where anybody could buy and sell anything - including illegal drugs - anonymously: the ultimate experiment in individual freedom.
Risky Businnes #671: The case for an American-owned NSO group — Why an American defence contractor acquiring NSO group would be a nonproliferation win and much more.
📧 Wrapping up
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