Blaklis' CTF challenges

Those are my challenges for multiple CTF I did since 2019 (sadly, I've no backups of my previous challenges :()

InsomniHack Finals 2019

Phuck3

Difficulty : 🔥🔥🔥🔥 (very hard)
Solves : 0
Main ideas : Bypass PHP open_basedir to read a flag
Click to go on the challenge repo!

PHPrivate

Difficulty : 🔥🔥🔥 (Hard)
Solves : > 20 (fail in the code :()
Main ideas : Use MySQL max_packet_size to make an uncatched query crash to return false == "" => login Bypass
Click to go on the challenge repo!

ShoPHP

Difficulty : 🔥🔥🔥🔥 (very hard)
Solves : 1
Main ideas : Use PHP bug #77115 to create a PHP array with duplicate keys to bypass SQL sanitization
Click to go on the challenge repo!