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@zthxxx
zthxxx / Activate Office 2019 for macOS VoL.md
Last active October 31, 2025 09:59
crack activate Office on mac with license file
@KelviNosse
KelviNosse / Ping.cpp
Created June 15, 2017 21:02
A ping function implemented on c++
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/file.h>
#include <sys/time.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
@cloudwu
cloudwu / dh.c
Last active June 19, 2022 15:38
Diffie-Hellman Key Exchange
// The biggest 64bit prime
#define P 0xffffffffffffffc5ull
#define G 5
#include <stdio.h>
#include <stdint.h>
#include <assert.h>
#include <stdlib.h>
// calc a * b % p , avoid 64bit overflow
@scottyab
scottyab / SignatureCheck.java
Last active August 26, 2025 19:14
Simple Android signature check. Please note: This was created in 2013, not actively maintained and may not be compatible with the latest Android versions. It's not particularly difficult for an attacker to decompile an .apk, find this tamper check, replace the APP_SIGNATURE with theirs and rebuild (or use method hooking to return true from `vali…
/*
* Copyright 2013 Scott Alexander-Bown
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
@emil2k
emil2k / Connectivity.java
Last active October 4, 2025 03:26
Android utility class for checking device's network connectivity and speed.
/*
* Copyright (c) 2017 Emil Davtyan
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions: