{"id":682,"date":"2020-08-17T22:35:59","date_gmt":"2020-08-17T21:35:59","guid":{"rendered":"https:\/\/cybercop-training.ch\/?p=682"},"modified":"2020-09-07T21:26:06","modified_gmt":"2020-09-07T20:26:06","slug":"analyzing-router-firmware-p2","status":"publish","type":"post","link":"https:\/\/cybercop-training.ch\/?p=682","title":{"rendered":"Analyzing Router Firmware P2"},"content":{"rendered":"

Challenge 2 – weak root password<\/strong><\/p>\n

\n

You’ve received an OpenWRT based firmware for analysis. The company assures you that the firmware is secure. You have your doubts!<\/p>\n

Your mission is to recover the root password hash from the firmware and crack it!<\/p>\n<\/blockquote>\n

In this challenge we have a file called firmware.bin and a passwordlist that I’ll later use for a bruteforce attack.<\/p>\n

\"\"<\/a><\/p>\n

binwalk firmware.bin<\/code><\/strong><\/p>\n

\"\"<\/a><\/p>\n

Again it’s a Squashfs filesystem. Let’s extract it.<\/p>\n

binwalk -e firmware.bin<\/code><\/strong><\/p>\n

Let’s browse to the \/etc directory and have a look for the shadow<\/strong> file<\/p>\n

\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

cp shadow \/home\/student<\/code><\/strong><\/p>\n

Let’s copy the shadow file over to my student home directory and do a vi of the file to remove all the other accounts<\/p>\n

\"\"<\/a><\/p>\n

:wq<\/code><\/strong><\/p>\n

For the cracking part I use the tool hashcat<\/a><\/p>\n

hashcat -m 1800 -a 0 shadow 1000000-password-seclist.txt<\/code><\/strong><\/p>\n

\"\"<\/a><\/p>\n

Bruteforce attacks always took some time…<\/p>\n

Ther’e we are, the root password is q1w2e3r4<\/p>\n

\"\"<\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Challenge 2 – weak root password You’ve received an OpenWRT based firmware for analysis. The company assures you that the firmware is secure. You have […]<\/a><\/p>\n<\/div>","protected":false},"author":2,"featured_media":664,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,4,17,16],"tags":[],"class_list":["post-682","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-forensic","category-hacking","category-iot-stuff","category-linux"],"_links":{"self":[{"href":"https:\/\/cybercop-training.ch\/index.php?rest_route=\/wp\/v2\/posts\/682","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cybercop-training.ch\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cybercop-training.ch\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cybercop-training.ch\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cybercop-training.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=682"}],"version-history":[{"count":4,"href":"https:\/\/cybercop-training.ch\/index.php?rest_route=\/wp\/v2\/posts\/682\/revisions"}],"predecessor-version":[{"id":694,"href":"https:\/\/cybercop-training.ch\/index.php?rest_route=\/wp\/v2\/posts\/682\/revisions\/694"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cybercop-training.ch\/index.php?rest_route=\/wp\/v2\/media\/664"}],"wp:attachment":[{"href":"https:\/\/cybercop-training.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cybercop-training.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cybercop-training.ch\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}