After attending an informative session of CTF101 conducted by the NUSGreyhats, I wrote write ups for every challenges I could solve during the workshop. Although the solutions were already covered in the workshop, it would good to keep a reference and keep track of what techniques we have learnt today.
Disclaimer: These materials are not to be abused. If you do abuse them, do not hold anyone else except yourself responsible for your own action.
Update: Too bad the web server has been taken down after the event.