SSL Traffic? and have a key? Visit Wireshark->Edit->Preferences->Protocols->SSL->RSA Key List.Sometimes, it is better to check which objects we are able to export, (File –> Export Objects –> HTTP/DICOM/SMB/SMB2) export the http/DICOM/SMB/SMB2 object.In both cases display filter “arp” (to only show arp requests) and “ip.addr=” (to show only packets with either source or destination being the IP address).
In another scenario, if the MAC address has been spoofed, IP address might be the same. You would find packets with two different IP address having same MAC address. If the challenge says IP address has been spoofed, then you should look for MAC address as it wouldn’t have changed.In order to filter by IP, ensure a double equals ‘=’ is used. Filters can be chained together using ‘&’ notation.= "POST" filter might help, based on concept that server is asking for LOGIN prompt and user is POSTing his password in cleartext. Comparing two similar images to find the difference.Mediaextract : Extracts media files (AVI, Ogg, Wave, PNG, …) that are embedded within other files.pngcheck : pngcheck verifies the integrity of PNG, JNG and MNG files (by checking the internal 32-bit CRCs and decompressing the image data) it can optionally dump almost all of the chunk-level information in the image in human-readable form.zsteg : detect stegano-hidden data in PNG & BMP.Sometimes, you may have to try all lowercase/ uppercase combinations. steghide : If there’s any text present in the Image file or the filename of the image or any link ( maybe to youtube video video name can be the password ) that can be a passphrase to steghide.There’s a data-extracter, we may try to extract all the values of RGB and see if there’s any flag in that. If somehow, you get a passphrase for the image, then you might have to use steghide tool as it allows to hide data with a passphrase. If so, you can extract those file with 7z x. hexdump -C and look for interesting pattern may be? If you get 7z or PK they represent Zipped files.binwalk the file, just to make sure, there’s nothing extra stored in that image.Strings RainingBlood.mp3 | awk 'length($0)>20' | sort -u
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