Questions tagged [packet]
A formatted unit of data carried by a network. This is the smallest unit of data that you can capture on packet-switched networks.
33 questions
0 votes
1 answer
121 views
Extracting & Parsing Information from a Captured Packet
I am attempting to capture and parse packets being sent between my machine and a game server that has a market place (example marketplace listing below). I can successfully capture the packets that ...
0 votes
0 answers
91 views
What is the checksum algorithm for these messages?
I am attempting to reverse engineer a motor with an unknown CRC algorithm. I've used a logic analyzer to find these bytes, and I would like to send my own bytes back to the motor. Unfortunately, I can'...
1 vote
2 answers
95 views
Looking for a packet forwarder on Android that redirects all packets to PC
I want to capture packets from Android apps. I need an packets forwarder on phone that creates a VPN to redirect all TCP packets to PC, then capture them with 'mitmproxy'. I want to use mitmproxy ...
- 209
0 votes
1 answer
213 views
How would you go about understanding the networking of a game and doing your own server?
I'm trying to reverse the network of a game. The commands are strings, however, it's not as easy as getting the function that encrypts the packet, as it's not encrypted, just encoded in its own way, ...
- 23
4 votes
0 answers
126 views
Why would a packet-based protocol occasionally XOR it's payload?
I'm REing the Bluetooth protocol for the Ecoflow Delta 2 power station, and so far I've had some success. But there's a strange behaviour that, while not hampering my efforts, has me puzzled. The ...
- 161
2 votes
0 answers
74 views
is there any way to find that a firewall is protecting a server and showing all ports closed in nmap?
I am using nmap to scan open ports on a device which uses FTP protocol to transfer firmware for update. But it is showing all 1000 ports are closed. It comes with a software to update its firmware. ...
- 21
0 votes
1 answer
234 views
Identifying the source of encryption used by UDP packets in a PCAP file
I have a PCAP file (mediafire link to the file) which basically represents packet captures between 2 machines running the same game connected to each other via LAN inside RPCS3 using RPCN. One of ...
- 103
1 vote
1 answer
116 views
Automated instruction analysis of dynamic memory
Introduction to problem: I have a binary executable with an unknown network packet protocol. I want to reverse engineer this packet protocol. My current way of doing it is to send some data and step ...
- 301
2 votes
1 answer
579 views
Help regarding XOR game decryption algorithm
I'm currently trying to reverse engineer the decryption algorithm for an old online game, using a chat message packet, as it contains text which is easily recognizable. I used a packet sniffer to get ...
- 23
0 votes
1 answer
122 views
how to calculate a byte value
We are reversing the method of creating a byte array packet. These values are obtained by serialport monitor from mediatek metamode usb port.The values of both packets are changed by changing the imei....
- 31
2 votes
1 answer
1k views
Reverse UART communication protocol
I'm objective is to build a custom wifi module to be used on a Samsung AC AR24HSFSAWKN. I have such an official module SWL-B70F for which I'm trying to reverse engineer the communication with the main ...
- 141
0 votes
0 answers
301 views
Reversing WSASend finding functions that called it
I'm trying to make my first DLL calling game functions What I need is tracing functions that call WSASend, so it will be easy for me to get all functions address to call them from my DLL. What I ...
- 161
0 votes
1 answer
837 views
Determine checksum / CRC algorithm
I am doing reverse engineering on some network protocol. It is client to server communication and I am pretty stuck with identifying checksum (or CRC) algorithm used in packet structure. I tried ...
- 1
1 vote
1 answer
562 views
Change sending IP of only certain executable
An executable that access the Internet uses my IP to do so. Is it be possible, with the help of a software or something like that, to change what IP an executable uses to access the Internet? Without ...
- 157
-3 votes
1 answer
674 views
How to get Packet Structures
I'm trying to reverse engineer a game with the goal of creating an emulator. I want to know how to get the structure of a network packet of a game whether it is client or server. Example (Random) ...
- 1