[pwnable.kr] fsb writeup [summary] format string bug, double staged fsb#include #include #include unsigned long long key; char buf[100]; char buf2[100]; int fsb(char** argv, char** envp){ char* args[]={"/bin/sh", 0}; int i; char*** pargv = &argv; char*** penvp = &envp; char** arg; char* c; for(arg=argv;*arg;arg++) for(c=*arg; *c;c++) *c='\0'; for(arg=envp;*arg;arg++) for(c=*arg; *c;c++) *c..