Most of the writeups I will post will not be entry-level PWNs - and some people have asked for them - so here you have some resources to work your way up learning PWN.
You shouldn’t restrict yourself to this learning paths, these are just the resources I’ve used and simple recommendations. Algunos videos estan en ingles, pero si les ponen subtitulos en español quedan joya ;)
- Introduction to the Buffer Overflow concept
- Great series explaining multiple types of Buffer Overflows and what happens under the hood
- Good Buffer Overflow practice
- Introduction and practice of ROP Chains
Overall just keep practicing with CTF challenges and reading writeups about new things :D