Hello there

8 Nov 2020 📌

Moin and welcome to my website
In the future I will publish some projects and articles here. Right now everything is considered under construction...

One of the most interesting soldering irons

7 April 2021

I like my tools relatively small but also demand good build quality. The TS100 is a minimalistic soldering iron which even has a build in Microcontroller. Furthermore, it even can be updated over microUSB. Even the price is acceptable for such a device.

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Best Bang for the Buck entry Oscilliscope

6 March 2021

I wanted to get some first glances on the pratical communicatian between my Raspberry Pi and an Sensor connected by I²C. I did not need a high sample rate and also didn't want to pay that much. So I did what every cheap electrical engineering student did and searched for some scopes on AliExpress.

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Russian hackers knocking on my VPS

11 Nov 2020

I have now set up a real VPS for this website yesterday. But already today some russians started to search for php exploits on it. The IP comes from Saint Petersburg to be more precise.
Here are the logfiles of the event:

91.241.19.84 - - [11/Nov/2020:16:15:03 +0000] "POST /api/jsonws/invoke HTTP/1.1" 404 199 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36"
91.241.19.84 - - [11/Nov/2020:16:15:03 +0000] "POST /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php HTTP/1.1" 404 199 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36"
91.241.19.84 - - [11/Nov/2020:16:15:03 +0000] "GET /solr/admin/info/system?wt=json HTTP/1.1" 404 199 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36"
91.241.19.84 - - [11/Nov/2020:16:15:04 +0000] "GET /index.php?s=/Index/\x5Cthink\x5Capp/invokefunction&function=call_user_func_array&vars[0]=md5&vars[1][]=HelloThinkPHP21 HTTP/1.1" 404 199 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36"
91.241.19.84 - - [11/Nov/2020:16:15:04 +0000] "GET /?a=fetch&content=die(@md5(HelloThinkCMF)) HTTP/1.1" 200 396 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36"
91.241.19.84 - - [11/Nov/2020:16:15:05 +0000] "GET /?XDEBUG_SESSION_START=phpstorm HTTP/1.1" 200 396 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36"
91.241.19.84 - - [11/Nov/2020:16:15:05 +0000] "GET /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php HTTP/1.1" 404 199 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36"
91.241.19.84 - - [11/Nov/2020:16:15:05 +0000] "GET /wp-content/plugins/wp-file-manager/readme.txt HTTP/1.1" 404 199 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36"