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zhuyifei1999 / SOLVE.md
Last active September 1, 2025 20:23
Serverless™ Notes - NNSCTF 2025
@zhuyifei1999
zhuyifei1999 / UIUCTF 2021 bpf_badjmp SOLUTION.md
Created August 2, 2021 11:06
@zhuyifei1999
zhuyifei1999 / rootfs.c
Last active May 1, 2021 14:13
Want to explore what's in your rootfs?
#define _GNU_SOURCE
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <stdio.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
@zhuyifei1999
zhuyifei1999 / q.sh
Last active September 29, 2022 13:28
#!/bin/bash
# based on: https://github.com/fomichev/dotfiles/blob/master/bin/q
usage() {
echo "q [options] [path to bzImage] [script]"
echo
echo "Run it from the kernel directory (make sure .config is there)"
echo
echo "options:"
echo " m - run depmod and modprobe"
@zhuyifei1999
zhuyifei1999 / py-trimmer.py
Created March 6, 2021 06:18
Massively simple Python minifier with line number preservation (to assist debugging)
import io
import os
import sys
import token
import tokenize
def trim(source, mod):
prev_pdoc = False
prev_ttext = ''
@zhuyifei1999
zhuyifei1999 / breakpad_windows_minidump_2_core.diff
Created January 20, 2021 12:18
diff --git a/src/google_breakpad/common/minidump_format.h b/src/google_breakpad/common/minidump_format.h
index 7b36d112..0899b4a3 100644
--- a/src/google_breakpad/common/minidump_format.h
+++ b/src/google_breakpad/common/minidump_format.h
@@ -318,7 +318,7 @@ typedef enum {
MD_EXCEPTION_STREAM = 6, /* MDRawExceptionStream */
MD_SYSTEM_INFO_STREAM = 7, /* MDRawSystemInfo */
MD_THREAD_EX_LIST_STREAM = 8,
- MD_MEMORY_64_LIST_STREAM = 9,
+ MD_MEMORY_64_LIST_STREAM = 9, /* MDRawMemory64List */
@zhuyifei1999
zhuyifei1999 / seccomp_emu_bench.c
Created September 26, 2020 17:50
// cc -O2 -g -o seccomp_emu_bench seccomp_emu_bench.c
#define _GNU_SOURCE
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <time.h>
#include <unistd.h>
@zhuyifei1999
zhuyifei1999 / replace_all_refs.py
Last active June 16, 2020 04:41
# WARNING:
# This code is thread-unsafe.
# This code may break dicts if any key __hash__ are mutated as a side effect.
# Don't use in production or with threads unless you know what you're doing.
import types
import ctypes
import sys
from queue import Queue
@zhuyifei1999
zhuyifei1999 / Dockerfile
Last active September 20, 2019 22:07
Running gcc-with-cpychecker in Docker
# docker build -t gcc-with-cpychecker .
FROM ubuntu:bionic
RUN apt-get update && apt-get install -y git g++-6 gcc-6-plugin-dev python3.7 libpython3.7 libpython3.7-dev python3-dev python3-six python3-pygments graphviz python3-lxml make
WORKDIR /usr/local/src
RUN git clone --branch v0.17 https://github.com/davidmalcolm/gcc-python-plugin.git gcc-python-plugin
WORKDIR /usr/local/src/gcc-python-plugin
RUN CC=gcc-6 CXX=g++-6 make PYTHON=python3 PYTHON_CONFIG=python3-config plugin
@zhuyifei1999
zhuyifei1999 / satanic.py
Created July 13, 2019 06:11
JS1 is utterly satanic, but so is Python... or is it?
# Inspired by:
# https://www.reddit.com/r/AskReddit/comments/ccbpzr/what_book_fucked_you_up_mentally/etmirvt/
import code
class NS(dict):
def __setitem__(self, key, val):
if key in self and hasattr(self[key], 'assign'):
return self[key].assign.__get__(self[key])(val)