This weekend's GreyCatCTF had an interesting "Reverse 101" challenge in the "EZPZ" category. In "nc" a number of questions were asked on the binary, and the most interesting one was what a certain function did (RC4 encrypt) and what input is required to get the flag.
Besides ghidra & gdb, angr was very helpful here to get the plaintext for the RC4 encryption. See pictures for details.
#greycat #ctf #cybersecurity #angr #reverseengineering #rc4 #decrypt #ezpz #writeup #notawriteup #lazy
A̮åȃa̋áā Aăă Āa̰á Ãäa̡ạa̦ A̡a̦a̯a̰áȃ Aăa̋åȃảāa̰ǎã
🗣️🔥 **scream_cypher** — A cypher based on XKCD-3054
🅰️ Messages consist of all As with different letters
🦀 Available as both a CLI tool and a Rust library!
⭐ GitHub: https://github.com/icorbrey/scream_cypher
#rustlang #cypher #xkcd #encrypt #decrypt #library #commandline #meme
@tejan the only correct way to deal with this is using proper #E2EE like #PGP/MIME & anonymous eMail accounts.
Same goes with #Messengers, which is why I only recommend #XMPP+#OMEMO (i.e. @monocles / #monoclesChat & @gajim / #gajim ) & PGP/MIME (i.e. @delta / #deltaChat & @thunderbird / #Thunderbird), because unlike #proprietary #SingleVendor & #SingoeProvider solutions, they offer #SelfCustody so even if a provider is cooperative or served a #subopena or got theor equipment seized, they can't decrypt the contents!
@GrapheneOS nodds in agreement
And that is why #Telegram rightfully got hit by #Germany and #France with fines, as per their platform like #Shitter, #NSAbook and others, Telegram can easily do #ServerSideScanning of #content and do #ContentModeration, but explicitly choose not to.
Whereas worst-case with most real #E2EE incl. #SelfCustody, it's technically impossible for the provider to #decrypt data even when forced to hand out everything at gunpoint...
[Portable App] BinHex CryPactor - Manipulate Binary and Hexadecimal Strings.
https://www.softpedia.com/get/Programming/Packers-Crypters-Protectors/BinHex-CryPactor.shtml
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#Bin #Binary #HEX #Hexadecimal
#Encrypt #Decrypt #Compact #Uncompact
#Regex #RegularExpression #unicode
#Windows #windows11 #windows10 #Windows7
#portableapps
I just released version 0.1.0 (the very first 🎉 ) of the nethsm-cli #crate.
This #RustLang application serves as #CLI to #NitroKey #NetHSM (or the provided testing container).
https://crates.io/crates/nethsm-cli/0.1.0
The `nethsm` application allows users to configure and administrate devices, create cryptographic keys and users, digitally #sign, #encrypt and #decrypt messages, generate random bytes and much more (see examples in the project README).
Some #programmingtools tend to encrypt/lock the data so it be not used to with by other tools🤔!
#HapaUjanjaTu🤷 this #ujanja could help #decrypt into a standard .bin binary format so any tool be of use, #inshaAllah👇
www.5021.tips/ujanja/backtobinary
👆☝️👆
Follow the attached instructions as the #hack is device specific🤒!
#programminglife #programmingtips #5021tips #datahack #ecuprogramming #keyprogramming #EEPROMwork #binarydata #ecutuning #ecutune #ecucoding #ecuprogrammer #keyprogrammer
[Browsers App] End-To-End Digital Check - Create or Check (Verify) Digital Data Offline and in Real Time. (Face and Phone Verification.)
https://cool-browsers-apps.blogspot.com/2024/04/e2e-digital-check.html
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#Data #Face #Phone #Check #Verification
#E2EE #E2EC #EndToEnd #Message #Text #Encryption #Decryption #Cryption #crypter #cypher
#Encrypt #Decrypt #Crypt #EndToEndEncryption #EndToEndCryption
#Infosec #netsec #cybersec #CyberSecurity
#Firefox #Chrome #Opera #Edge #Safari
#Android
[Browsers App] End-To-End Message Crypter - Encrypt\Decrypt Messages In Real Time.
https://cool-browsers-apps.blogspot.com/2024/04/e2e-message-crypter.html
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#E2EE #E2EC #EndToEnd #Message #Text #Data #Encryption #Decryption #Cryption #crypter #cypher
#Encrypt #Decrypt #Crypt #EndToEndEncryption #EndToEndCryption
#Infosec #netsec #cybersec #CyberSecurity
#Firefox #Chrome #Opera #Edge #Safari
#Android #Amazon #AmazonAppstore
[Browsers App] Digital Check - Create or Check (Verify) Digital Data Offline and in Real Time. (Face and Phone Verification.)
https://cool-browsers-apps.blogspot.com/2024/03/digital-check.html
.
#Data #Face #Phone #Check #Verification
#Message #Text #Encryption #Decryption #Cryption #crypter #cypher
#Encrypt #Decrypt #Crypt
#Infosec #netsec #cybersec #CyberSecurity
#Firefox #Chrome #Opera #Edge #Safari
#Android #Amazon #AmazonAppstore
[Browsers App] Message Crypter - Encrypt\Decrypt Messages In Real Time.
https://cool-browsers-apps.blogspot.com/2024/03/message-crypter.html
.
#Message #Text #Data #Encryption #Decryption #Cryption #crypter #cypher
#Encrypt #Decrypt #Crypt
#Infosec #netsec #cybersec #CyberSecurity
#Firefox #Chrome #Opera #Edge #Safari
#Android #Amazon #AmazonAppstore
#Facebook snooped on users’ Snapchat traffic in secret project, documents reveal
"Facebook launched a secret project designed to #intercept and #decrypt the network traffic between people using Snapchat’s app and its servers."
#AllesAnzünden 🔥🔥🔥
https://techcrunch.com/2024/03/26/facebook-secret-project-snooped-snapchat-user-traffic/
Is there even one single thing that is improving in the #UK? I don't think so.
https://action.openrightsgroup.org/write-your-mp-about-threats-our-online-security-and-privacy
#Online #Security #digital #Privacy #technology #Apple #decrypt #encrypted #communications #humanrights #MP #parliament #cybersecurity #democracy #freespeech #spy #tech #Investigatory #Powers #safeguarding #InvestigatoryPowersAct2016
«The "confidentiality of communications is an essential element of the right to respect for private life and correspondence," the ECHR's ruling said. Thus, requiring messages to be decrypted by law enforcement "cannot be regarded as necessary in a democratic society."»
#Backdoors that let cops #decrypt messages violate human #rights, #EU court says
#Backdoors that let cops #decrypt messages violate #humanrights, #EU court says
#privacy
#Backdoors That Let Cops #Decrypt Messages Violate #HumanRights, #EU Court Says - Slashdot
#privacy #encryption #rights
CyberChef from GCHQ: Cyber Swiss Army Knife
https://gchq.github.io/CyberChef/
#ycombinator #base64 #hex #decode #encode #encrypt #decrypt #compress #decompress #regex #regular_expressions #hash #crypt #hexadecimal #user_agent #url #certificate #x_509 #parser #JSON #gzip #md5 #sha1 #aes #des #blowfish #xor
CyberChef from GCHQ: The Cyber Swiss Army Knife
https://gchq.github.io/CyberChef/
#ycombinator #base64 #hex #decode #encode #encrypt #decrypt #compress #decompress #regex #regular_expressions #hash #crypt #hexadecimal #user_agent #url #certificate #x_509 #parser #JSON #gzip #md5 #sha1 #aes #des #blowfish #xor
