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evandrix / gist:1901352
Created Feb 24, 2012 — forked from michaelpetrov/gist:1899630
Stripe CTF Challenge - Solutions to all Levels
View gist:1901352
Stripe CTF - Work Notes
mpetrov (petrov.michael@gmail.com)
These notes are very rough. They should give a general idea of how each level was solved.
---- LEVEL 01 (login: e9gx26YEb2) -----
Solution: modifying PATH env variable
Password: kxlVXUvzv
date.c
View iptables.firewall.rules
*filter
# Allow all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0
-A INPUT -i lo -j ACCEPT
-A INPUT ! -i lo -d 127.0.0.0/8 -j REJECT
# Accept all established inbound connections
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
# Allow all outbound traffic - you can modify this to only allow certain traffic
View encrypted-git-repo.md

Transparent Git Encryption

This document has been modified from its [original format][m1], which was written by Ning Shang (geek@cerias.net). It has been updated and reformatted into a [Markdown][m2] document by [Woody Gilk][m3] and [republished][m4].

Description

When working with a remote git repository which is hosted on a third-party storage server, data confidentiality sometimes becomes

View pr.md

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

View README
In order to use segtree class defined above, you will need to create a datatype(a struct most likely), which will implement the function merge(). It can also additionally implement split, if you need to define the split operation.
A sample is shown as "struct segtree_node" in the code above.
The segtree has to be instantiated with this defined data type. For example,as
segtree<segtree_node> s;
You have to first call the init function of the class, which will take
int n=number of elements in your array,
node[] = your inital array,
identity = an element such that merge(y,identity) = merge(identity,y) = y for all y's.
View card_game.py
import sys
MOD = 1000000007
def main():
for (i, (n, k, cards)) in enumerate(testcases()):
print "Case #{0}: {1}".format(i+1, subsum(n, k, cards))
def testcases(cin=sys.stdin):
m = int(cin.next())
View gist:4472413
<!DOCTYPE HTML>
<html lang = "en">
<head>
<title>HackThis!! - Capture the Flag</title>
<meta charset = "UTF-8" />
<link href='https://fonts.googleapis.com/css?family=Ubuntu|Orbitron' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="/ctf/css/main.css">
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
View gist:4472407
<!DOCTYPE HTML>
<html lang = "en">
<head>
<title>HackThis!! - Capture the Flag</title>
<meta charset = "UTF-8" />
<link href='https://fonts.googleapis.com/css?family=Ubuntu|Orbitron' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="/ctf/css/main.css">
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
View gist:4472415
<!DOCTYPE HTML>
<html lang = "en">
<head>
<title>HackThis!! - Capture the Flag</title>
<meta charset = "UTF-8" />
<link href='https://fonts.googleapis.com/css?family=Ubuntu|Orbitron' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="/ctf/css/main.css">
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
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