maple3142’s gists

maple3142 / wol_go.go

Created September 26, 2024 14:35

wake on lan go

	package main

	import (
	"crypto/ecdsa"
	"crypto/elliptic"
	"crypto/rand"
	"crypto/tls"
	"crypto/x509"
	"crypto/x509/pkix"
	"encoding/pem"

maple3142 / .gitconfig

Created September 26, 2024 01:39

gitconfig for pretty logs https://stackoverflow.com/questions/1838873/visualizing-branch-topology-in-git/34467298#34467298

	[alias]
	lg = lg1
	lg1 = lg1-specific --all
	lg2 = lg2-specific --all
	lg3 = lg3-specific --all

	lg1-specific = log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(auto)%d%C(reset)'
	lg2-specific = log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset)%C(auto)%d%C(reset)%n'' %C(white)%s%C(reset) %C(dim white)- %an%C(reset)'
	lg3-specific = log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset) %C(bold cyan)(committed: %cD)%C(reset) %C(auto)%d%C(reset)%n'' %C(white)%s%C(reset)%n'' %C(dim white)- %an <%ae> %C(reset) %C(dim white)(committer: %cn <%ce>)%C(reset)'

maple3142 / bls12381.sage

Last active September 19, 2024 04:18

BLS12-381 pairing in sage

	# BLS12-381
	# https://hackmd.io/@benjaminion/bls12-381
	x = var("x")
	q = 0x1A0111EA397FE69A4B1BA7B6434BACD764774B84F38512BF6730D2A0F6B0F6241EABFFFEB153FFFFB9FEFFFFFFFFAAAB
	r = 0x73EDA753299D7D483339D80809A1D80553BDA402FFFE5BFEFFFFFFFF00000001
	Fq = GF(q)
	Fq2 = GF(q ^ 2, "i", x ^ 2 + 1)
	i = Fq2.gen()
	u6 = 1 / (1 + i)
	b = 4

maple3142 / wsl2kernel.sh

Created September 15, 2024 08:01

Update WSL2 Kernel

	curl -LJO 'https://github.com/microsoft/WSL2-Linux-Kernel/archive/refs/tags/linux-msft-wsl-6.6.36.6.tar.gz'
	tar xzf WSL2-Linux-Kernel-linux-msft-wsl-6.6.36.6.tar.gz
	cd WSL2-Linux-Kernel-linux-msft-wsl-6.6.36.6
	# current kernel: 5.15.153.1-microsoft-standard-WSL2
	cat /proc/config.gz \| gzip -d > .config
	make oldconfig # press ENTER for every question to use default config
	make -j8 # Compile kernel
	cp arch/x86/boot/bzImage /mnt/c/Windows/YOUR_USERNAME/bzImage

	# In Windows $HOME/.wslconfig, `[wsl2]` section, set `kernel=C:\\Users\\YOUR_USERNAME\\bzImage`

maple3142 / ed25519.py

Last active September 14, 2024 07:40

https://ed25519.cr.yp.to/python/ed25519.py ported to Python 3

	import hashlib

	try:
	import gmpy2

	HAS_GMPY2 = True
	except ImportError:
	HAS_GMPY2 = False

	b = 256

maple3142 / normal.py

Last active July 9, 2024 05:59

DownUnderCTF 2024 - super party computation

	from pwn import process, context
	from Crypto.PublicKey import ECC
	from Crypto.Signature import DSS
	from Crypto.Hash import SHA256
	from Crypto.Util.number import bytes_to_long
	import json
	from server import key_agreement, Paillier_PublicKey, e_add_const, e_mul_const

	CURVE = "p256"

maple3142 / ngrams.json

Created July 7, 2024 09:57

DownUnderCTF 2024 Quals - three line crypto

{"Thi": -8.29006305458414, "his": -6.028756264582789, "is ": -5.533245861866925, "s i": -7.319505351894243, " is": -6.450440742453986, "s t": -6.40498609966847, " th": -4.372319218082527, "the": -4.823210075216906, "he ": -5.0991662585590305, "e 1": -14.819481892846365, " 10": -12.74004035116653, "100": -14.12633471228642, "00t": -15.51262907340631, "0th": -15.51262907340631, "th ": -6.027463930980903, "h E": -12.679415729350094, " Et": -12.078641868921164, "Ete": -12.947679715944773, "tex": -11.561385354824884, "ext": -9.474758153484172, "xt ": -9.906827007110314, "t f": -7.710419757159193, " fi": -7.431154033269259, "fil": -10.092094074134025, "ile": -8.413427329853219, "le ": -7.159603228203985, "e p": -7.361295735505878, " pr": -6.853762723673928, "pre": -8.045829598387709, "res": -7.273299645504515, "ese": -7.6652572372465215, "sen": -7.9983744205899, "ent": -6.625114476017489, "nte": -7.142776469888782, "ted": -7.927347994767185, "ed ": -6.72449313354259, "d b": -7.3914458313274825, " by": -7.5305541983

maple3142 / ov.py

Last active June 19, 2024 13:05

vsctf 2024 - salad

	from sage.all import Matrix, vector, Zmod, var, ZZ
	import random
	class Random:
	def __init__(self, modulus):
	self.r = random.SystemRandom()
	self.modulus = modulus
	def next(self):
	return self.r.randrange(1, self.modulus)
	class CentralMapping:
	def __init__(self, o, v, modulus):

maple3142 / hook.c

Last active April 1, 2024 16:22

generic LD_PRELOAD shell hook example

	#include <stdio.h>
	#include <stdlib.h>
	#include <dlfcn.h>

	__attribute__((constructor)) void init() {
	putenv("LD_PRELOAD=");
	system("sh");
	exit(0);
	}
	// gcc -shared -fPIC hook.c -o hook.so -ldl -Os -s -Wall

maple3142 / a.js

Created March 31, 2024 03:47

wasm debug helper functions

	const mem = new Uint8Array(Module.asm.memory.buffer)

	function encode(str) {
	return new TextEncoder().encode(str)
	}

	function decode(arr) {
	return new TextDecoder().decode(arr)
	}

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