A collection of Capture The Flag (CTF) write-ups that demonstrate the use of pwntools for solving various cybersecurity challenges. The repository contains solutions to CTF problems from multiple competitions and years, including events like DEFCON qualifiers, PlaidCTF, and other security competitions. Each write-up showcases how pwntools can be utilized to exploit vulnerabilities and solve binary exploitation challenges. The collection includes challenges from various years and competitions: - 2013 PlaidCTF challenges - 2014 DEFCON qualifiers problems - 2014 GITS Teaser events - Multiple other CTF competitions The write-ups serve as educational resources for learning binary exploitation techniques and understanding how pwntools can be applied in practical scenarios. Some challenges may have dependencies on specific libraries like libc++1 and require the master branch of pwntools from GitHub. The repository includes test functionality, though some services may have limitations such as inability to be re-run immediately due to socket reuse restrictions. Certain challenges are noted as non-functional, including specific problems from 2013 PCTF and 2014 DEFCON qualifiers.