BUUCTF(MISC)_[DDCTF2018]
目录
[DDCTF2018](╯°□°）╯︵ ┻━┻
[DDCTF2018]流量分析
[DDCTF2018](╯°□°）╯︵ ┻━┻
点击跳转至题目
key='d4e8e1f4a0f7e1f3a0e6e1f3f4a1a0d4e8e5a0e6ece1e7a0e9f3baa0c4c4c3d4c6fbb9b2b2e1e2b9b9b7b4e1b4b7e3e4b3b2b2e3e6b4b3e2b5b0b6b1b0e6e1e5e1b5fd' hex=[] flag='' for i in range(0,len(key)-1,2): zdh=key[i:i+2] hex.append(zdh) for i in range(len(hex)): zdh1=hex[i] flag+=chr(int(int(zdh1,16))-128) print(flag)DDCTF{922ab9974a47cd322cf43b50610faea5}
[DDCTF2018]流量分析
点击跳转至题目
tcp contains "KEY"
=E4=BD=A0=E5=A5=BD=EF=BC=8C=E8=AF=B7=E4=BD=A0=E5=B0=86=E5=AF=86=E9=92=A5=E5=AE=89=E8=A3=85=E5=88=B0=E6=9C=8D=E5=8A=A1=E5=99=A8=E4=B8=8A=E3=80=82=E8=B0=A2=E8=B0=A2
https://www.w3cschool.cn/tools/index?name=decode_encode_tool
将base64转换为图片
将图片内容转成文本
https://www.onlineocr.net/zh_hant/
套上正确的SSL私钥格式，保存为txt文件
-----BEGIN RSA PRIVATE KEY----- MIICXAIBAAKBgQDCm6vZmclJrVH1AAyGuCuSSZ8O+mIQiOUQCvN0HYbj8153JfSQ LsJIhbRYS7+zZ1oXvPemWQDv/u/tzegt58q4ciNmcVnq1uKiygc6QOtvT7oiSTyO vMX/q5iE2iClYUIHZEKX3BjjNDxrYvLQzPyGD1EY2DZIO6T45FNKYC2VDwIDAQAB AoGAbtWUKUkx37lLfRq7B5sqjZVKdpBZe4tL0jg6cX5Djd3Uhk1inR9UXVNw4/y4 QGfzYqOn8+Cq7QSoBysHOeXSiPztW2cL09ktPgSlfTQyN6ELNGuiUOYnaTWYZpp/ QbRcZ/eHBulVQLlk5M6RVs9BLI9X08RAl7EcwumiRfWas6kCQQDvqC0dxl2wIjwN czILcoWLig2c2u71Nev9DrWjWHU8eHDuzCJWvOUAHIrkexddWEK2VHd+F13GBCOQ ZCM4prBjAkEAz+ENahsEjBE4+7H1HdIaw0+goe/45d6A2ewO/lYH6dDZTAzTW9z9 kzV8uz+Mmo5163/JtvwYQcKF39DJGGtqZQJBAKa18XR16fQ9TFL64EQwTQ+tYBzN +04eTWQCmH3haeQ/0Cd9XyHBUveJ42Be8/jeDcIx7dGLxZKajHbEAfBFnAsCQGq1 AnbJ4Z6opJCGu+UP2c8SC8m0bhZJDelPRC8IKE28eB6SotgP61ZqaVmQ+HLJ1/wH /5pfc3AmEyRdfyx6zwUCQCAH4SLJv/kprRz1a1gx8FR5tj4NeHEFFNEgq1gmiwmH 2STT5qZWzQFz8NRe+/otNOHBR2Xk4e8IS+ehIJ3TvyE= -----END RSA PRIVATE KEY-----Wireshark添加上TLS密钥
编辑--首选项--Protocols--TLS--Edit
点击+号，点击KeyFile，选择刚刚的txt文件
过滤http，追踪流http
得到flag
flag{0ca2d8642f90e10efd9092cd6a2831c0}