Dongle and Crypto protection.
Goldbach´s conjuncture. Every even number >2 can be represented as sum of two prime numbers ;)
Solutions: Andrewl, freesoul
CLR SerialMe 0x02
Second .NET puzzle.
CLR Serial Me 0x01
My first .NET crackme. Just a simple math puzzle :)
Solutions: Indomit, Numernia
Zheng SignEncryption, Modified ICE-blockcipher, CRC32, SHA1 ... For crypto guys only!
A small VM and a small encoding function. I havnt designed a assembler for it( am lazy! ), so i hand coded the instructions :D.
Solutions: jB, zaphod
Custom block cipher using RC4.
Solutions: jB, WoCCC
This is a newbie crackme series containing 10 crackmes from 1 byte patching to crypto keygenning. It will be good for RCE starters :). Crackmes and the solutions in the crackme archive!
Small keygenme coded for team iNF. Uses some simple modular arithmetic.
Network keygenme. Accepts name and serial through sockets. Some crazy idea but inefficient implementation :P
Crypto and some custom algos.
Modular arithmetic, uses xgcd in keygenme. Just create equation for keygen :)
Solutions: sherwin jaye
KeyFileMe.Sha-2 and Base64 for protection.
Solutions: mario, x15or
Keygenme, uses RC4 for serial generation.