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The OWASP Cheat Sheet Series was created to provide a concise collection of high value information on specific application security topics.
Services, Checkers and Exploits from saarCTF 2022. https://ctf.saarland
Exploit Development and Reverse Engineering with GDB Made Easy
Writeups for Capture The Flag cybersecurity competitions
An interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers.
Animation of the SHA-256 hash function in your terminal.
TCP port scanner, spews SYN packets asynchronously, scanning entire Internet in under 5 minutes.
Example of private, public key generation and shared secret derivation using OpenSSL and the x25519 curve.
GUSTAVE is a fuzzing platform for embedded OS kernels. It is based on QEMU and AFL (and all of its forkserver siblings). It allows to fuzz OS kernels like simple applications.
A proof-of-concept cracker for cryptocurrency brainwallets and other low entropy key algorithms.
Python3 library providing an easy interface to the Bitcoin data structures and protocol.
Bitcoin M-of-N Multisig P2SH implemented in Go
Shallot allows you to create customized .onion addresses for your hidden service. (p.s. I didn't write Shallot!)
Free, easy to use Cyclic Redundancy Check (CRC) calculator and source code generator
Crypto 101, the introductory book on cryptography.
KeePassX is a cross platform port of the windows application “Keepass Password Safe”.
Simple chat program that communicates using inaudible sounds
Javascript Bitcoin Wallet. Supports Multisig, Stealth, HD, SegWit, Bech32, Time Locked Addresses, RBF and more!
Take security by obscurity to the next level (this is a bad idea, don't really use this please)
A Python3 SegWit-compliant library which provides tools to handle Bitcoin data structures in a simple fashion.
Glacier is a protocol for secure cold storage of bitcoins.
SImple, common-sense Bitcoin-themed Python ECC library
A javascript Bitcoin library for node.js and browsers.