update

week02/hard/client.py

@@ -4,12 +4,10 @@ import time
 HOST = 'netsec.net.in.tum.de'  # TODO
 PORT = 64984  # TODO
 
-def gen_crends():
-    credentials = "root,Password00"
-    return credentials
 
-def get_flag():
-    credentials  = "root,Password19"
+
+def get_flag2():
+    credentials  = "root,Passwordr00"
     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
     s.connect((HOST, PORT))
     sf = s.makefile('rw')  # we use a file abstraction for the sockets
@@ -17,19 +15,16 @@ def get_flag():
     sf.write("{}\n".format(credentials))
     sf.flush()
     data  = sf.readline().rstrip('\n')
-    print(data)
-    response = eval(data)
-    sf.write("{}\n".format(response))
+    resp = eval(data)
+    sf.write("{}\n".format(resp))
     sf.flush()
     print(sf.readline().rstrip('\n'))
-    flag  = sf.readline().rstrip('\n')
-    return flag
+    print(sf.readline().rstrip('\n'))
 
-
-def find_port_get_flag():
+def get_flag():
     for i in range(100):
-        time.sleep(1)
-        credentials  = "root,Password"+str("%02d" % i)
+        time.sleep(2)
+        credentials  = "root,Passwordr"+str("%02d" % i)
         print(credentials)
         try:
             s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
@@ -39,13 +34,60 @@ def find_port_get_flag():
             sf.write("{}\n".format(credentials))
             sf.flush()
             data  = sf.readline().rstrip('\n')
-            answer = eval(data)
-            sf.write("{}\n".format(answer))
+            resp = eval(data)
+            sf.write("{}\n".format(resp))
             sf.flush()
             print(sf.readline().rstrip('\n'))
+            print(sf.readline().rstrip('\n'))
         except:
             pass
             
 
+
+# def ans():
+#     for i in range(100):
+#         credentials = 'root'+','+'Password'+str("%02d" % i)
+#         print(credentials)
+#         try:
+#             s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+
+#             s.connect((HOST, PORT))
+#             sf = s.makefile("rw")  # we use a file abstraction for the sockets
+
+#             sf.write("{}\n".format(credentials))
+#             sf.flush()
+
+#             challenge = sf.readline().rstrip('\n')
+
+#             print("Solve the following equation to prove you are human: ", challenge)
+
+#             inToPosEx = infix_to_postfix(challenge)
+#             value = postfixEval(inToPosEx)
+
+#             print('VALUE = ',value)
+#             sf.write("{}\n".format(str(value)))
+#             sf.flush()
+
+#             data = sf.readline().rstrip('\n')
+#             print("From Server: `{}'".format(data))
+
+#             data = sf.readline().rstrip('\n')
+#             print("From Server: received {} bytes".format(len(data)))
+
+#             data = b64decode(data.encode())
+
+#             pdf_hdr = b'%PDF-1.5'
+
+#             if len(data) >= len(pdf_hdr) and data[:len(pdf_hdr)] == pdf_hdr:
+#                 print("Looks like we got a PDF!")
+#                 # TODO write the received data to a file
+#                 f = open('a.pdf','wb')
+#                 f.write(data)
+#                 f.close()
+#             sf.close()
+#             s.close()
+#         except:
+            pass
+
 if __name__ == '__main__':
-    print(get_flag())
+    get_flag()