Cipher Shastra ™

Cipher Shastra is a Security Playground to help people learn Blockchain Security, Smart Contract Exploitation, Cryptography by playing CTF like Challenges

[Cipher Shastra ™ @CipherShastra]

Seems like you guys are up for a new challenge?

The Factory needs to make a special color, but seems like it is not possible with the colors available. Can you help?

Let's Mix Some Colors!

Challenge: https://t.co/qxwhzOjhtK

#ciphershastra #smartcontracts #security #ethereum

[Cipher Shastra ™ @CipherShastra]

@dedohwale Don’t think so, as the return status is not being constrained!

[RareSkills @RareSkills_io]

The RareSkills Book of Gas Optimization has been published.

With over > 90 pointers and 11k+ words, not including source code, you are almost certainly going to see a trick or two you haven't seen before.

We assume you know the EVM to a certain degree, this is not a beginner tutorial.

As you can see from the photo, the post is so long we ran into size issues with our hosting platform! So we will publish the next section shortly and link to it.

This was a team effort. Authors: @Jesserc_ @AmadiMichaels @supernovahs444.

Stay tuned, we are ramping up the scale of content production and building systems to publish quality articles and books even faster.

Soon enough, RareSkills will be your one-stop shop for all the advanced tutorials you could ever wish for. We have big plans with more announcements to come!

Enjoy! https://t.co/PCEmneUUvg

[Cipher Shastra ™ @CipherShastra]

A new challenge is out.

Solidity but on Steroids.

https://t.co/Jv85fAWnX3

#ciphershastra #smartcontracts #security #ethereum

[Cipher Shastra ™ @CipherShastra]

Looking forward to another exciting writeup from @thesolidchain ! 🚀🚀

[The Solid Chain @thesolidchain]

Ups, @CipherShastra did it again! A new amazing CTF challenge called Mirror, Mirror (on the wall). If you are into security and blockchain, you can't miss it! @thesolidchain will be onto it to solve it. Check it out!

https://t.co/hRY1uFk81I

#blockchain #ctf #security

[Cipher Shastra ™ @CipherShastra]

It's up.
A new challenge to solve! Let's Goooooooo!
Mirror - https://t.co/JmQ4ICcJ5E

#ciphershastra #smartcontracts #security #ethereum

[Cipher Shastra ™ @CipherShastra]

Mirror Mirror on the Wall...
Share the Secrets, Share Them All!

Coming Today!

[Cipher Shastra ™ @CipherShastra]

SOON!

[Cipher Shastra ™ @CipherShastra]

Let’s goooooo🚀🚀🚀

[The Solid Chain @thesolidchain]

It's been a while since @CipherShastra has released a CTF challenge. Tired of waiting? Well, no more! Welcome to the Color Factory, a new challenge that will spin your head upside down. Check it out!

https://t.co/T6dLjgCpcz

#ctf #challenge #solidity #security

[Cipher Shastra ™ @CipherShastra]

Do you like mixing colors?
The "Color Factory" may help you create colors which you may not have ever seen.

#ComingSoon

[Cipher Shastra ™ @CipherShastra]

Have you recently started getting into Zero Knowledge stuff?

And picked circom as your first DSL?

You might want to understand some of the security issues related with it. No worries.

Here you go, a circom challenge for you try out:

https://t.co/dtJqbflNi0

Keep Learning!

[Cipher Shastra ™ @CipherShastra]

Let’s Goooo 🚀

[L. B @lostboy_24]

Just breaching the top 50 of @ProgrammerSmart / smart contract. engineer, consistency is the key. Now starting the @CipherShastra ctf

[Ingonyama (Now MoonMath AI) @Ingo_zk]

https://t.co/NF3z8mGvsg Verifiable FHE using SNARKs

[Cipher Shastra ™ @CipherShastra]

@robersoca proved himself as a true GAMBLER! He can cheat the system!

Do you have the skills?
Let’s find out: https://t.co/UWGmq3bt0g

https://t.co/NHqDmVRGzB

#ciphershastra #smartcontractsecurity #gambler

[Cipher Shastra ™ @CipherShastra]

@razzor_tweet AirDropped a new challenge:
https://t.co/uFKMR3keYa

It's your typical King of the Ether challenge, or maybe not!

"IT'S A GAME OF THRONE!"

#ciphershastra #smartcontractsecurity #KingSlayer

Photo by Willian B. on Unsplash

[RazzorSec @razzorsec]

A very Happy #Diwali to everyone. 🎆
May the incredible charm of Diwali stay with you forever and shower you with happiness and smiles. 🚀

[vitalik.eth @VitalikButerin]

An exploration on whether or not we could replace KZG with arithmetic hashes, eg. Poseidon, in EIP-4844 (proto-danksharding):

https://t.co/MaHpoUzaku

Summary: yeah it's possible, but there are a lot of tradeoffs.

Thanks @abdelstark for suggesting this topic!

[Solidity @solidity_lang]

Want to get up to speed with Modern Solidity? Then check out @ethchris' remote presentation for #SmartCon, which covers IR pipeline, errors and encoding, immutable, user defined value types, generics, standard lib and reference checking! #xp
📺: https://t.co/0ParktqHL5

[Joran Honig @joranhonig]

Cairo is an awesome language for developing programs with provable execution, and the core component of StarkNet!

I've compiled some vulnerability classes that you might find in Cairo(/StarkNet) programs!

🧵👇