Bash 'printf' equivalent for command prompt?
I'm looking to pipe some String input to a small C program in Windows's command prompt. In bash I could use
$ printf "AAAAAx86x08x04xed" | ./program
Essentially, I need something to escape those hexadecimal numbers in command prompt.
Is there an equivalent or similar command for printf in command prompt/powershell?
Thanks
在PowerShell中，你可以这样做：
"AAAAA{0}{1}{2}{3}" -f 0x86,0x08,0x04,0xed | ./program
I recently came up with the same question myself and decided that for someone developing Windows exploits it is worth installing cygwin :)
Otherwise one could build a small C program mimicking printf 's functionality:
#include <string.h>
int main(int argc, char *argv[])
{
int i;
char tmp[3];
tmp[2] = ' ';
if (argc > 1) {
for (i = 2; i < strlen(argv[1]); i += 4) {
strncpy(tmp, argv[1]+i, 2);
printf("%c", (char)strtol(tmp, NULL, 16));
}
}
else {
printf("USAGE: printf.exe SHELLCODEn");
return 1;
}
return 0;
}
The program only handles "xABxCD" strings, but it shouldn't be difficult to extend it to handle "AAAAAxABxCD" strings if one needs it.
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