| Event | Title | Category | Cost |
|---|---|---|---|
| HSCTF 6 | md5-- | WEB | ~230 |
Written by: dwang
md5-- == md4
On the page we see the source code.
If the condition $ _GET ["md4"] == hash ("md4", $ _GET ["md4"]) is met, then we get a flag.
Googling a bit, found something interesting.
It is necessary to find such a string "0eDigits", md4 hash from which is also equal to "0eDigits".
This string is 0e251288019
hsctf{php_type_juggling_is_fun}