https://github.com/uclaacm/lactf-archive/tree/master/2023/

Pwn:

gatekeep:

Author:bliutech

If I gaslight you enough, you won't be able to get my flag! :)

nc lac.tf 31121

Note: The attached binary is the exact same as the one executing on the remote server.

Downloads
[gatekeep.c](<https://lactf-challs.storage.googleapis.com/uploads/c87fb83bcc4c5a69bf031715477fa5022ff4e0fbde0f3de64b055ab9c02fe6e9/gatekeep.c>)
[gatekeep](<https://lactf-challs.storage.googleapis.com/uploads/552482ce75bc7e3ee7d6c5d951c19a52c00f9711f8c79e89e6547dacafbfa051/gatekeep>)
[Dockerfile](<https://lactf-challs.storage.googleapis.com/uploads/7013cbe3f634d74f93f7a29bd24010d91068455ac8d9fb16f173d9f14b0bc5fe/Dockerfile>)

gatekeep.zip

bot:

Author:kaiphait

I made a bot to automatically answer all of your questions.

nc lac.tf 31180

Downloads
[bot](<https://lactf-challs.storage.googleapis.com/uploads/006a2e73644835158dc097d4eff75ab978a20ffe92c1ce4f534536c41080a7ea/bot>)
[bot.c](<https://lactf-challs.storage.googleapis.com/uploads/cae1f131aabcdf137b27331c5193d8f32d028b05668a57a1df239222e3eeff99/bot.c>)
[libc-2.31.so](<https://lactf-challs.storage.googleapis.com/uploads/263e55f639b540a00fc87e7fdc10078c1cbe89e148ea440ad1a9cef1cbd53c6f/libc-2.31.so>)
[ld-2.31.so](<https://lactf-challs.storage.googleapis.com/uploads/4325e436d7b281490848dfb580f16844adcf31afedf3972e12a660abe5c057c2/ld-2.31.so>)
[Dockerfile](<https://lactf-challs.storage.googleapis.com/uploads/71a24c7af5b65f1b28fbc60904e82f6a59beac87d2fa349fcd5284105a558cf2/Dockerfile>)

bot.zip

rut-toh-relro:

Author:aplet123

My friend keeps writing super insecure C programs but I'm too lazy to fix his code. I'm sure it'll be fine as long as I use enough exploit mitigations, right?

nc lac.tf 31134

Downloads
[Dockerfile](<https://lactf-challs.storage.googleapis.com/uploads/0e4efb3fd75235a554e2fd64de1cb7d38c4bcec35f80204b78200f5938f68b5b/Dockerfile>)
[rut_roh_relro.c](<https://lactf-challs.storage.googleapis.com/uploads/6b2eef3271c037a7f568ce89a86463b71ade68d68734eacd75f514baa78176dc/rickroll.c>)
[rut_roh_relro](<https://lactf-challs.storage.googleapis.com/uploads/dd85b016a5546daee39f65628a67ec14fe38c3bb50198b5df2a3834f195f0b80/rickroll>)

rut_roh_relro.zip

从docker里提出libc

ld-2.31_libc-2.31.zip

rickroll:

Author:aplet123

Make your own custom rickroll with my new rickroll program!

nc lac.tf 31135

Downloads
[Dockerfile](<https://lactf-challs.storage.googleapis.com/uploads/0e4efb3fd75235a554e2fd64de1cb7d38c4bcec35f80204b78200f5938f68b5b/Dockerfile>)
[rickroll.c](<https://lactf-challs.storage.googleapis.com/uploads/6b2eef3271c037a7f568ce89a86463b71ade68d68734eacd75f514baa78176dc/rickroll.c>)
[rickroll](<https://lactf-challs.storage.googleapis.com/uploads/dd85b016a5546daee39f65628a67ec14fe38c3bb50198b5df2a3834f195f0b80/rickroll>)

rickroll.zip