Corrupted Lovers

Easy Challenge

Files included:

44KB

forensics_corrupted_lovers.zip

archive

Open

In the .zip file contains a corrupted .png file

running pngcheck on the file tells us that there is a corrupted chunk

$ pngcheck flag.png 
flag.png  illegal (unless recently approved) unknown, public chunk IDID
ERROR: flag.png

changing IDID to IDAT in a hex editor fixes it

before

after

the exported png file now works!

flag{d4mn_R0m3o_4nd_juLL3t_1s_l0ng}

flag: flag{d4mn_R0m3o_4nd_juLL3t_1s_l0ng}