히공

문제 output.txt의 내용 with open("output.txt", 'r') as f: read = f.readlines() flag = '' j = 0 qu = '' for i in read: if j==8: flag+=chr(int(qu,2)) qu = '' j=0 if i=='PONG\n': qu += '0' else: qu += '1' j+=1 print(flag+'}') 2진수를 의미하는 것 같아서 코드를 작성했다. 플래그 : Hero{p1n6_p0n6_15_fun}

문제 #!/usr/bin/env python3 from os import urandom from random import randint from pwn import xor input_img = open("flag.png", "rb").read() outpout_img = open("flag.png.enc", "wb") key = urandom(8) + bytes([randint(0, 9)]) outpout_img.write(xor(input_img, key)) xor.py의 내용이다. from pwn import xor with open('flag.png.enc', 'rb') as f: read = f.read() png_signature = bytes.fromhex("89 50 4E 47 0D 0A 1..

문제 .text .globl value .data .align 4 .type value, @object .size value, 4 value: .long 24564753 .globl isGood .align 4 .type isGood, @object .size isGood, 4 isGood: .long 12345 .section .rodata .align 8 .LC0: .string "Hey ! Have you got a password for me ? " .text .globl getInput .type getInput, @function getInput: .LFB6: .cfi_startproc endbr64 pushq %rbp # .cfi_def_cfa_offset 16 .cfi_offset 6, -..

문제 package fr.heroctf.jni; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; import androidx.appcompat.app.AppCompatActivity; public class MainActivity extends AppCompatActivity { private Button checkButton; private EditText flagEditText; public native boolean checkFlag(String str); static { System.loadL..