Binary ltrace | Ryan's CTF [08] What's the password?

Key Takeaways

this next challenge in Ryan Nicholson CTF is called what's the password for 30 points the last challenge in the intermediate category it says reverse engineer program to reveal the flag so it gives us a link to a show we can log in to login credentials CTF 3 and challenge 3 and then in our directory we have a file called program which we are not able to actually do some basic file reconnaissance on because whatever reason this docker container does not have the file program is it even executable yes it is ok cool so we can dot slash program go ahead and run it and it says enter the password for the flag please sub nope try again huh I don't know why that wasn't the password that's really weird so at this point I would do some like regular file execution like processing and handling just to see what is this thing really doing so I would try and run like L trace or s trace but again this docker container does not have any of those tools so I went for my other low-hanging fruit and just ran strings on it and that actually got some results I scrolled through this for a little bit and pretty boring it says ok the flag is trans sumption so that is simply the solution if you wanted to write a get flag script for whatever you could simply grep for flag in here get the second line and then cut that up and you'd have that but again since this in this it's in this web show we can't like automate our own connection to it from our own terminal we may as well just go ahead and take note of it isn't on that flag in our notes but no need to write a get flags for it maybe a job done a solution in in whatever markdown file you want and create a simple write up but it totally unnecessary in this case that was simply just another strength challenge so hey I want to give this much for shout out and some love to my patreon supporters you guys are fantastic this list is getting longer and I hope it gets a little bit longer you know whatever I'll take it hey $1 a month on patreon will give you a special shout-out just like this at the end of every video $5 a month or more will give you early access to everything that I release on YouTube when it's ready hopefully we'll have more incentives pretty soon with the discord server doing some cool stuff but hey that's all I've got for now if you did like this video please do press that like button maybe subscribe if you're willing to leave a comment I had said those out of work that's weird hey should I cuss out on discord I'll link in the description and maybe if you're willing to check me out patron great see you soon