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lightdiscord / script.js
Created February 22, 2022 01:29
antiwordle.com word finder
const allWords = ["BUNCH","TABLE","GUEST","WATCH","SALES","OFTEN","MORAL","BENCH","MAYOR","STARE","LABOR","CLASS","STILL","WOMAN","REPLY","ENJOY","CLEAN","SOUTH","SAUCE","BRAIN","QUICK","WHERE","SHAKE","VALUE","NERVE","MAYBE","LIGHT","KNIFE","SPORT","WRITE","GRAVE","TASTE","CREAM","SOUND","TRACK","APPLE","JOINT","ADMIT","TROOP","POUND","GIVEN","AWARE","STAIR","FLESH","THERE","DRESS","THROW","ASIDE","HEART","BRUSH","SMOKE","LUNCH","GUARD","EVENT","BRAND","PAUSE","RIGHT","ANGER","STYLE","PROVE","CHEAP","GLOVE","MOUNT","MONTH","SALAD","TERMS","TODAY","ORDER","GRADE","TOUGH","COACH","SWING","MATCH","WOULD","BOARD","TEACH","MODEL","SOLID","FIFTH","GRASS","PIANO","BLOCK","SHELF","FAITH","CHILD","STAFF","NOVEL","TIRED","YOUNG","REACT","ADAPT","DRINK","ALBUM","CIVIL","CHART","QUOTE","STRIP","FUNNY","YOURS","WORLD","ALIVE","WHEEL","TRIAL","WHOLE","EARTH","RIFLE","IDEAL","CRACK","SCOPE","CLEAR","NAKED","PLANT","HUMAN","FIGHT","WORTH","YOUTH","DOZEN","AFTER","WATER","SUPER","SOLVE","LATER","FIELD","PLACE","PLANE","DRAMA
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lightdiscord / script.js
Last active February 21, 2022 18:12
nerdlegame.com decode response to plaintext
// Decode the response from the server
function decode(plain) {
return String.fromCharCode(...[...plain].map((c) => (c.charCodeAt(0) + 113) % 126))
}
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lightdiscord / console.sh-session
Last active January 13, 2022 13:49
Use bytes stored near other when pointer points to a bigger type.
$ clang -Wall -Wextra -g3 ./main.c -o main && ./main
deadbeef
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lightdiscord / main.cpp
Last active October 6, 2021 23:17
Solution to the enum and union without union because of destructors problem (sad c++98 noises), solution using templates.
#include <iostream>
#include <stdexcept>
#include <vector>
#include <string>
template <class T> struct size_of {
static const int size = sizeof(T);
};
template <> struct size_of<void> {
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lightdiscord / README.md
Last active October 3, 2021 12:13
Writeup TSG2021 - Begginer's reverse

writeup-tsg-2021

beginner's reverse

The challenge is a crackme, it asks for an argument of 32 chars and gives it to a check function.

This check function fork the program multiple times and redirect the stdout of the child to /dev/null.

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lightdiscord / main.c
Created September 16, 2021 15:37
Observation on signal accumulation
#include <unistd.h>
#include <signal.h>
#include <assert.h>
#include <stdio.h>
#include <sys/wait.h>
void handle_sender(pid_t receiver) {
for (int i = 0; i < 10; i++) {
usleep(100);
puts("Signal sent");
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lightdiscord / README.md
Last active September 30, 2021 02:06
Troobleshooting of controller hot plugging for steam-run

Every command is done under a nix-shell opened with the following command.

$ nix-shell -p gcc SDL2 steam-run

First thing compile the executable to debug controller hot plugging.

$ gcc ./main.c -o ./main -lSDL2
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lightdiscord / main.cpp
Last active August 31, 2021 13:20
Checking if vector re-allocation invoke the copy constructor of each element
#include <iostream>
#include <vector>
class Item {
private:
char identifier;
public:
Item(char identifier) : identifier(identifier) {
std::cout << "Item's " << identifier << " constructor called" << std::endl;
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lightdiscord / README.md
Created July 9, 2021 12:54

POC: Duplication of variable in headers

$ gcc -o a.out *.c && ./a.out
one: 4
two: 4
one: 42
two: 4
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lightdiscord / README.md
Last active July 7, 2021 19:38
Write-up for the Bitcoinminer-{med,hard} challenge available during the CYBERTF

Bitcoinminer-{med,hard}

The method is the same for both challenges.

Identification

When we access the challenge we get two cookies key and password.

  • The password seems random and does not correspond to any known hash format.
  • The key is two integer separated with an @.