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A webshell and a normal file that have the same MD5

(github.com)
98 points shlomo_z | 5 comments | 21 Sep 25 05:52 UTC | HN request time: 1.027s | source
1. andreareina ◴[21 Sep 25 05:59 UTC] No.45320414[source]▶
The normal file doesn't look that normal
replies(1): >>45356511 #
2. o11c ◴[24 Sep 25 05:08 UTC] No.45356511[source]▶
Keep in mind that the stated use is cache-poisoning of automated scanners, not fooling humans.
replies(1): >>45357770 #
3. slow_typist ◴[24 Sep 25 08:35 UTC] No.45357770[source]▶
Humans have to put the so called php-file on the server intentionally for any subsequent attack to work. But it is a binary file.
replies(1): >>45357920 #
4. h33t-l4x0r ◴[24 Sep 25 09:05 UTC] No.45357920{3}[source]▶
I imagine it's supposed to get onto the server by an exploited vulnerable image upload plugin
replies(1): >>45359406 #
5. slow_typist ◴[24 Sep 25 12:34 UTC] No.45359406{4}[source]▶
Maybe I don’t understand the scenario fully, but under your assumption there is no need to inject the malicious webshell later.