Hackvent_2019/Day 23/decode.php

63 lines
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PHP
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2019-12-29 19:05:19 +01:00
#!/usr/bin/php
<?php
if(count($argv) < 4) {
die("Wrong Usage: " . $argv[0] . " <proc num> <start> <end>");
}
$PROC_NUM = $argv[1];
if(!is_numeric($argv[2])) {
die("NaN: start");
}
if(!is_numeric($argv[3])) {
die("NaN: end");
}
$start = intval($argv[2]);
$end = intval($argv[3]);
if($end < $start) {
die("Invalid interval: end < start");
}
$charset = 'abcdefghijkmpqrstuvwxyzABCDEFGHJKLMPQRSTUVWXYZ23456789';
$zip = new ZipArchive();
$zip_status = $zip->open("Santa-data.zip");
if ($zip_status !== true) {
die("Could not open zip file");
}
for($t = $start; $t <= $end; $t++) {
srand($t);
$rand_str = "";
// if(($t-$start) % 10000000 == 0) {
// $progress = (($t-$start) / ($end - $start)) * 100;
// print("[$PROC_NUM] Progress: $progress%\n");
// }
for($j = 0; $j < 12; $j++) {
$rand_key = rand(0, 54 - 1);
$rand_str .= $charset[$rand_key];
}
// stdout for john
// if(strcmp($rand_str, "Kwmq3Sqmc5sA") == 0) {
// die("Done: $t\n");
// }
// 4160000
// print("$rand_str\n");
//
if ($zip->setPassword($rand_str)) {
if ($zip->extractTo(__DIR__)) {
die("PASSWORD: $rand_str");
}
}
}
?>