This was a challenge to demonstrate how the content-type header can be used to fool the browser into treating the HTTP response body in unexpected ways.
As the harder solution works for both, heres source:
php
avlidienbrunn
/ writeup.md
Created
September 18, 2023 16:18
challenge writeup content-type shenanigans
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| #!/bin/bash | |
| B=({A..Z} {a..z} {0..9});p=printf\ ;I=$(B=$@ | |
| for((;i<${#B};i++)){ for y in {31..128};{ | |
| [[ ${B:i:1} = "$($p\\x`$p%x $y`)" ]]&&(a()((q=y/2,r=y%2));a;o=$r | |
| for((;q;)){ y=$q;a;o=$r$o;};$p%08d $o)} }) | |
| for((;e<${#I};e+=6)){ y=${I:e:6}0000;O+=${B[2#${y::6}]};} | |
| for((;${#O}%4;)){ O+=\=;} | |
| $p$O |
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| Afghanistan | |
| Albania | |
| Algeria | |
| Andorra | |
| Angola | |
| Antigua & Deps | |
| Argentina | |
| Armenia | |
| Australia | |
| Austria |