# SMP
> We'd call it Bedwars but we suck at Bedwars too much.

Now this challenge we didn't technically 'solve' during the CTF but we had the flag and didn't think we had a full solve, interpreting it as a partial flag as our code originally cut off the top of the flag.

The file we are given is a `smp.log` which seems to contain logs for a Minecraft server, as hinted at by Bedwars which is referring to Hypixel's Bedwars.

In the summary (sorted by amount), is some block, entity and player updates:
```
Sorted by count:
+======================================================================================+ +==================================================================================+
| Server ---> Client | | Client ---> Server |
+======================================================================================+ +==================================================================================+
| Name | Count | Bandwidth | | Name | Count | Bandwidth |
+------------------------------------------------+-----------------+-------------------+ +------------------------------------------------+---------------+-----------------+
| Total | 198745 (100.0%) | 10271434 (100.0%) | | Total | 7308 (100.0%) | 207553 (100.0%) |
| Rotate Head | 58374 (29.37%) | 348161 ( 3.39%) | | Move Player PosRot | 3526 (48.25%) | 126936 (61.16%) |
| Move Entity Pos | 42847 (21.56%) | 513082 ( 5.00%) | | Move Player Pos | 2315 (31.68%) | 64820 (31.23%) |
| Set Entity Motion | 36968 (18.60%) | 406645 ( 3.96%) | | Chunk Batch Received | 668 ( 9.14%) | 4676 ( 2.25%) |
| Move Entity PosRot | 36052 (18.14%) | 504728 ( 4.91%) | | Swing | 278 ( 3.80%) | 1112 ( 0.54%) |
| Set Entity Data | 7374 ( 3.71%) | 79346 ( 0.77%) | | Use Item On | 274 ( 3.75%) | 7546 ( 3.64%) |
| Teleport Entity | 2799 ( 1.41%) | 89514 ( 0.87%) | | Player Command | 94 ( 1.29%) | 658 ( 0.32%) |
| Bundle | 2190 ( 1.10%) | 6570 ( 0.06%) | | Move Player Rot | 68 ( 0.93%) | 816 ( 0.39%) |
| Level Chunk With Light | 1904 ( 0.96%) | 8077926 (78.64%) | | Set Creative Mode Slot | 29 ( 0.40%) | 513 ( 0.25%) |
| Forget Level Chunk | 1451 ( 0.73%) | 15961 ( 0.16%) | | Keep Alive | 21 ( 0.29%) | 231 ( 0.11%) |
| Entity Event | 1432 ( 0.72%) | 11456 ( 0.11%) | | Set Carried Item | 13 ( 0.18%) | 65 ( 0.03%) |
| Add Entity | 1095 ( 0.55%) | 61294 ( 0.60%) | | Player Abilities | 9 ( 0.12%) | 36 ( 0.02%) |
| Update Attributes | 1063 ( 0.53%) | 51977 ( 0.51%) | | Player Action | 2 ( 0.03%) | 29 ( 0.01%) |
| Remove Entities | 961 ( 0.48%) | 5751 ( 0.06%) | | Use Item | 2 ( 0.03%) | 12 ( 0.01%) |
| Block Update | 866 ( 0.44%) | 11027 ( 0.11%) | | Container Close | 2 ( 0.03%) | 8 ( 0.00%) |
| Move Entity Rot | 861 ( 0.43%) | 6888 ( 0.07%) | | Hello | 1 ( 0.01%) | 25 ( 0.01%) |
| Chunk Batch Finished | 668 ( 0.34%) | 2672 ( 0.03%) | | Login Acknowledged | 1 ( 0.01%) | 3 ( 0.00%) |
| Chunk Batch Start | 668 ( 0.34%) | 2004 ( 0.02%) | | Client Information (Configuration) | 1 ( 0.01%) | 16 ( 0.01%) |
| Set Time | 324 ( 0.16%) | 6156 ( 0.06%) | | Accept Teleportation | 1 ( 0.01%) | 4 ( 0.00%) |
| Block Changed Ack | 278 ( 0.14%) | 1263 ( 0.01%) | | Client Intention | 1 ( 0.01%) | 17 ( 0.01%) |
| Set Equipment | 275 ( 0.14%) | 6847 ( 0.07%) | | Finish Configuration | 1 ( 0.01%) | 3 ( 0.00%) |
| Sound | 147 ( 0.07%) | 4998 ( 0.05%) | | Custom Payload (Configuration)|minecraft:brand | 1 ( 0.01%) | 27 ( 0.01%) |
| Set Chunk Cache Center | 67 ( 0.03%) | 603 ( 0.01%) | | | | |
| Keep Alive | 21 ( 0.01%) | 231 ( 0.00%) | | | | |
| Player Info Update | 13 ( 0.01%) | 2039 ( 0.02%) | | | | |
| Set Passengers | 6 ( 0.00%) | 48 ( 0.00%) | | | | |
| Level Event | 5 ( 0.00%) | 100 ( 0.00%) | | | | |
| Container Set Slot | 4 ( 0.00%) | 39 ( 0.00%) | | | | |
| Level Particles | 3 ( 0.00%) | 152 ( 0.00%) | | | | |
| Section Blocks Update | 3 ( 0.00%) | 60 ( 0.00%) | | | | |
| Ticking State | 1 ( 0.00%) | 8 ( 0.00%) | | | | |
| Ticking Step | 1 ( 0.00%) | 4 ( 0.00%) | | | | |
| Update Advancements | 1 ( 0.00%) | 7834 ( 0.08%) | | | | |
| Set Health | 1 ( 0.00%) | 12 ( 0.00%) | | | | |
| Set Experience | 1 ( 0.00%) | 9 ( 0.00%) | | | | |
| Update Enabled Features | 1 ( 0.00%) | 22 ( 0.00%) | | | | |
| Update Recipes | 1 ( 0.00%) | 22651 ( 0.22%) | | | | |
| Update Tags (Configuration) | 1 ( 0.00%) | 8517 ( 0.08%) | | | | |
| Set Default Spawn Position | 1 ( 0.00%) | 15 ( 0.00%) | | | | |
| Initialize Border | 1 ( 0.00%) | 42 ( 0.00%) | | | | |
| Change Difficulty | 1 ( 0.00%) | 5 ( 0.00%) | | | | |
| Commands | 1 ( 0.00%) | 7797 ( 0.08%) | | | | |
| Container Set Content | 1 ( 0.00%) | 240 ( 0.00%) | | | | |
| Custom Payload (Configuration)|minecraft:brand | 1 ( 0.00%) | 27 ( 0.00%) | | | | |
| Finish Configuration | 1 ( 0.00%) | 3 ( 0.00%) | | | | |
| Game Event | 1 ( 0.00%) | 8 ( 0.00%) | | | | |
| Game Profile | 1 ( 0.00%) | 935 ( 0.01%) | | | | |
| Hello | 1 ( 0.00%) | 173 ( 0.00%) | | | | |
| Set Carried Item | 1 ( 0.00%) | 4 ( 0.00%) | | | | |
| Login | 1 ( 0.00%) | 128 ( 0.00%) | | | | |
| Login Compression | 1 ( 0.00%) | 4 ( 0.00%) | | | | |
| Player Abilities | 1 ( 0.00%) | 12 ( 0.00%) | | | | |
| Player Position | 1 ( 0.00%) | 37 ( 0.00%) | | | | |
| Recipe | 1 ( 0.00%) | 781 ( 0.01%) | | | | |
| Registry Data | 1 ( 0.00%) | 4602 ( 0.04%) | | | | |
| Server Data | 1 ( 0.00%) | 26 ( 0.00%) | | | | |
+------------------------------------------------+-----------------+-------------------+ +------------------------------------------------+---------------+-----------------+
```

I decide to first look into the blocks, specifically `Block Update`.

Each block update has the following JSON below the log line:
```json
{
"blockstate": 9,
"pos": {
"x": ?,
"y": ?,
"z": ?
}
}
```
The `?` instead being the positions.

I decide to graph out the positions using a 3d scatterplot with `matplotlib` and Python.

```python
import json
import matplotlib.pyplot as plt
import numpy as np
objs=[]
cobj=""
startCapture=False
with open('smp.log') as f:
for x in f.readlines():
x=x.replace('\n','').replace('\r','')
if startCapture:
cobj+=x
if x.startswith('}'):
startCapture=False
objs.append(cobj)
cobj=""
print(len(objs))
if x.endswith('[S --> C] Block Update'):
startCapture=True
print('Making figure...')
fig = plt.figure()
ax = fig.add_subplot(projection='3d')
xs=[]
ys=[]
zs=[]
print('Placing coords...')
for x in objs:
x=json.loads(x)
xs.append(x['pos']['x'])
ys.append(x['pos']['y'])
zs.append(x['pos']['z'])
print('Scattering...')
ax.scatter(xs, ys, zs, c='r', marker='o')
ax.set_xlabel('X Label')
ax.set_ylabel('Y Label')
ax.set_zlabel('Z Label')
print('Showing...')
plt.show()
```

Once plotted we can zoom in on a particular clump and see the flag.


Flag: `gigem{w3_l0v3_pl1y1n_MC_SMP}`