Rating:
#Stego 100 - Unreadable
Unreadable was a stego problem starting with an unknown file. Piping the file through xxd led us to find the flag "written" in the output with printable characters surrounded by non-printable characters.
```................
....-Sc(Ezfh<z..
........*Y......
..........bV....
..........R(....
....PsgOo,......
................
................
....LZ....nx....
....bi....%8....
....)]I#<V}_S'..
....r)..........
....(f..........
................
................
..........mG....
..........V|....
....:qFX>BR0JG..
....>@....VJ....
....o+....Fj....
................
................
....[5o-[+......
....[[..`&j@....
....ly....8u....
....I+....P6....
....sg..iK......
................
................
....zTV}?e......
....X4..k4Ck....
....xY....T=....
....\:..ESJ~....
....dZY?wa......
................
................
....b-o(hC49....
........~G......
..........lC....
..........8x....
....M\UNsl......
................
................
........CR......
........8x......
....n99+(:'F7<..
..d&........d#..
..E|........8h..
```
Shown above is `hitcon{`, the first seven characters of the flag, as seen in xxd's output.
##flag
hitcon{WE USE XXD INSTEAD OF IDA PRO}
