obfusk

#!/usr/bin/python3

import json
import zipfile

from hashlib import sha1, sha256

from asn1crypto import cms                                      # type: ignore[import-untyped]
from cryptography.exceptions import InvalidSignature
from cryptography.hazmat.primitives import serialization

obfusk

#!/bin/bash
set -euo pipefail
zipentry=META-INF/version-control-info.textproto
commit_from_zip() {
  unzip -p -- "$1" "$zipentry" | grep revision | grep -Eo '[0-9a-f]+' | tail -1
}
url="${1:-}"
if [ -z "$url" ]; then
  read -r -p 'url> '
  url="$REPLY"

obfusk

public class Unicode {
  public static void main(String[] args) {
    String foo = "🏳️‍⚧️";
    for (String x : foo.split("")) {
      System.out.println(x.codePointAt(0));
    }
    System.out.println("---");
    int n = foo.codePointCount(0, foo.length());
    for (int i = 0; i < n; ++i) {
      int j = foo.offsetByCodePoints(0, i);

obfusk

[flake8]
ignore = E501

obfusk

#!/usr/bin/python3
# encoding: utf-8
# SPDX-FileCopyrightText: 2024 FC (Fay) Stegerman <[email protected]>
# SPDX-License-Identifier: AGPL-3.0-or-later

import os
import struct
import zipfile

from dataclasses import dataclass

obfusk

x509_canonical_name.py

Python implementation of the Java algorithm for an RFC 2253 conformant string representation of an X.500 distinguished name with additional canonicalisations (as used to compare distinguished names in X.509 certificates for equality in e.g. apksigner and Android).

See the Java documentation.

Caveats

obfusk

import java.security.cert.CertificateFactory
import java.security.cert.X509Certificate

def i = new FileInputStream(args[0])
def cert = CertificateFactory.getInstance("X.509").generateCertificate(i)
println cert.getIssuerX500Principal().getName(javax.security.auth.x500.X500Principal.CANONICAL)

mildsunrise

import os, stat
from contextlib import contextmanager
from subprocess import run

@contextmanager
def fd_context(fd: int):
    try:
        yield fd
    finally:
        os.close(fd)

obfusk

perl -pi -e 's/\b(\d+)\b/$1 - 1/e' file-with-numbers

obfusk

#!/usr/bin/python3
import dataclasses
import json
import sys

import repro_apk.binres as binres

data = {}
for apkfile in sys.argv[1:]:
    try: