PicoCTF_WU

Introduction

• I play picoCTF with my team EHC_Loi_Yeu_Kho_Noi_Pl2s
• This write up mainly focus on reverse engineering challenge because that is my strength ૮₍ ´ ꒳ `₎ა
• Thanks for reading this WU. Enjoy ٩(^ᗜ^ )و ´-

Challenge

Challenge	Point	Solved
Gatekeeper	100	✅
Hidden Cipher 1	100	✅
Hidden Cipher 2	100	✅
Bypass Me	200	❌
The Add/On Trap	200	✅
Silent Stream	200	✅
Autorev 1	200	✅
Secure Password Database	200	✅
Binary Instrumentation 3	300	❌
Binary Instrumentation 4	400	❌
JITFP	500	❌

Tool using

• Ida pro 9.2 version
• Ghidra
• Detect it Easy
• Scapy/Wireshark
• LLM