[MISC]USB键鼠流量

学长给的一道题

打开压缩包后发现一个pcap和一个加密文件
先把pcap在linux里面分离一下

里面是摩斯电码，解码后得到password2
显然还有密码1，那我们还是在pacp里面找找

看到USB想到USB键鼠
直接在github里面下载wangyihang大佬的脚本

#!/usr/bin/env pythonimport sys
import osDataFileName = "usb.dat"presses = []normalKeys = {"04":"a", "05":"b", "06":"c", "07":"d", "08":"e", "09":"f", "0a":"g", "0b":"h", "0c":"i", "0d":"j", "0e":"k", "0f":"l", "10":"m", "11":"n", "12":"o", "13":"p", "14":"q", "15":"r", "16":"s", "17":"t", "18":"u", "19":"v", "1a":"w", "1b":"x", "1c":"y", "1d":"z","1e":"1", "1f":"2", "20":"3", "21":"4", "22":"5", "23":"6","24":"7","25":"8","26":"9","27":"0","28":"<RET>","29":"<ESC>","2a":"<DEL>", "2b":"\t","2c":"<SPACE>","2d":"-","2e":"=","2f":"[","30":"]","31":"\\","32":"<NON>","33":";","34":"'","35":"<GA>","36":",","37":".","38":"/","39":"<CAP>","3a":"<F1>","3b":"<F2>", "3c":"<F3>","3d":"<F4>","3e":"<F5>","3f":"<F6>","40":"<F7>","41":"<F8>","42":"<F9>","43":"<F10>","44":"<F11>","45":"<F12>"}shiftKeys = {"04":"A", "05":"B", "06":"C", "07":"D", "08":"E", "09":"F", "0a":"G", "0b":"H", "0c":"I", "0d":"J", "0e":"K", "0f":"L", "10":"M", "11":"N", "12":"O", "13":"P", "14":"Q", "15":"R", "16":"S", "17":"T", "18":"U", "19":"V", "1a":"W", "1b":"X", "1c":"Y", "1d":"Z","1e":"!", "1f":"@", "20":"#", "21":"$", "22":"%", "23":"^","24":"&","25":"*","26":"(","27":")","28":"<RET>","29":"<ESC>","2a":"<DEL>", "2b":"\t","2c":"<SPACE>","2d":"_","2e":"+","2f":"{","30":"}","31":"|","32":"<NON>","33":"\"","34":":","35":"<GA>","36":"<","37":">","38":"?","39":"<CAP>","3a":"<F1>","3b":"<F2>", "3c":"<F3>","3d":"<F4>","3e":"<F5>","3f":"<F6>","40":"<F7>","41":"<F8>","42":"<F9>","43":"<F10>","44":"<F11>","45":"<F12>"}def main():# check argvif len(sys.argv) != 2:print("Usage : ")print("        python UsbKeyboardHacker.py data.pcap")print("Tips : ")print("        To use this python script , you must install the tshark first.")print("        You can use `sudo apt-get install tshark` to install it")print("Author : ")print("        WangYihang <wangyihanger@gmail.com>")print("        If you have any questions , please contact me by email.")print("        Thank you for using.")exit(1)# get argvpcapFilePath = sys.argv[1]# get data of pcapos.system("tshark -r %s -T fields -e usb.capdata 'usb.data_len == 8' > %s" % (pcapFilePath, DataFileName))# read datawith open(DataFileName, "r") as f:for line in f:presses.append(line[0:-1])# handleresult = ""for press in presses:if press == '':continueif ':' in press:Bytes = press.split(":")else:Bytes = [press[i:i+2] for i in range(0, len(press), 2)]if Bytes[0] == "00":if Bytes[2] != "00" and normalKeys.get(Bytes[2]):result += normalKeys[Bytes[2]]elif int(Bytes[0],16) & 0b10 or int(Bytes[0],16) & 0b100000: # shift key is pressed.if Bytes[2] != "00" and normalKeys.get(Bytes[2]):result += shiftKeys[Bytes[2]]else:print("[-] Unknow Key : %s" % (Bytes[0]))print("[+] Found : %s" % (result))# clean the temp dataos.system("rm ./%s" % (DataFileName))if __name__ == "__main__":main()

在Linux里面发布命令

python UsbKeyboardDataHacker.py ./example.pcap

解出password1
最后合并password1,2，得到密码，打开图片

但是我们看他的名字，明显是隐写工具wbs43open打开这个图片，得到flag

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