printf format string brainfuck
using this script to trans the format string to pesudo c code.
copy the initial parameter to the front and run solver
Finally get the flag
Memory fornesic, but related article we got from search engine is useless, because it does not provide a open source tools. First need to build a tools to parse Java card op code.
And then write a vm can run this code.
Credit to 疯狂六月雪 & hen @KeenLab
Found some interesting respond, dump it to file and parse it as x64 asm code.
Reverse the binary and write a c program to decode the flag.