2021 HITCON CTF writeup
| Name | Category | Points | Solves |
|---|---|---|---|
| so easy rsa | CRYPTO | 210 / 500 | 56 |
So common so fragile. Warmup.
See attachments.
See solutions.
| Name | Category | Points | Solves |
|---|---|---|---|
| a little easy rsa | CRYPTO | 240 / 500 | 37 |
There are too much unnecessary unknowns in RSA. I don’t like it.
See attachments.
See solutions.
| Name | Category | Points | Solves |
|---|---|---|---|
| magic rsa | CRYPTO | 262 / 500 | 27 |
Let’s perform the magic to encrypt as hash!
nc 35.72.139.70 31337
See attachments.
See solutions.
| Name | Category | Points | Solves |
|---|---|---|---|
| magic dlog | CRYPTO | 262 / 500 | 27 |
Let’s perform the magic to solve dlog!
nc 35.72.139.70 31338
See attachments.
See solutions.
| Name | Category | Points | Solves |
|---|---|---|---|
| so easy but not rsa | CRYPTO | 305 / 500 | 15 |
Textbook implementation, isn’t it?
See attachments.
See solutions.
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