CRSid

Hack The Box. Challenges. Pwn

24 minutes to read

64-bit binary. Heap exploitation. Safe-linking. Out-of-bounds write. Tcache poisoning. Exit handlers

AHS512

Hack The Box. Challenges. Crypto

5 minutes to read

Custom hash function. Bit operations

Fast Carmichael

Hack The Box. Challenges. Crypto

2 minutes to read

Miller-Rabin primality test

Gonna-Lift-Em-All

Hack The Box. Challenges. Crypto

2 minutes to read

Modular arithmetic

Horror Feeds

Hack The Box. Challenges. Web

4 minutes to read

Stack-based SQL injection

Juggling Facts

Hack The Box. Challenges. Web

3 minutes to read

PHP. Type Juggling

Ouija

Hack The Box. Challenges. Reversing

5 minutes to read

Substitution cipher

Spookifier

Hack The Box. Challenges. Web

2 minutes to read

Server-Side Template Injection

Spooky RSA

Hack The Box. Challenges. Crypto

3 minutes to read

RSA. Greatest Common Divisor

Whole Lotta Candy

Hack The Box. Challenges. Crypto

3 minutes to read

AES cipher modes. Stream cipher. Known plaintext attack

Mind your Ps and Qs

picoCTF 2021. Cryptography

1 minute to read

20 points. Factorization. RSA decryption