Open the tftp.pcapng file in . Go to: File > Export Objects > TFTP... You will see several files being transferred: instructions.txt plan program.deb picture1.bmp , picture2.bmp , picture3.bmp 2. Decode the Hints The text files are encoded using ROT13 :
"VHAVEBYENARQGURCEBTENZNAQUVQVGJVGUVAONR" → Decodes to: I USED THE PROGRAM AND HID IT WITH DUEDILIGENCE 3. Identify the Steganography Tool 24500.rar
If you are working on a different version of this file, let me know: Did you get this from a or a malware sandbox ? Do you have the original .pcap file? Are you stuck on a specific error while extracting? Open the tftp
This will output a file (often named flag.txt ) containing the flag: picoCTF{h1dd3n_1n_pLa1n_51GHT_183759ad} 24500.rar