PwC write up Portuga - Find me

Đề:
I'm Different
https://drive.google.com/open?id=0B7ahcQCpMll-MUdzcHQ3czJsM0E


Ta nhận được 1 file pcap, và trong khi phân tích, ta nhận thấy có rất nhiều gói tin ICMP được gửi


Quan sát và ta nhận thấy có 1 vài gói có chưa data lạ dạng hex
Ta extract data và decode -> ta nhận được 1 chuỗi hex
Tiếp tục decode hex ta nhận được 2 chuỗi , ta có thể thấy chuỗi thứ 2 là base64, base64 decode -> flag: F1nd_Us_Aga1n_olololol
-> PwC{F1nd_Us_Aga1n_olololol}

yeah và bạn đã bị troll rất thốn :)

chọn cái khác nha =))

tiếp tục thử gói tiếp theo nó ra thế này : W3_m33t_Aga1n_olololol
tiếp tục gói nữa ta tìm được : PwC{W3_Ar3_1cMp_Tunn3L1Ng} chính là flag thật <3



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