This topic was archived here:

https://web.archive.org/web/20230000000000fw_/https://www.zenhax.com/viewtopic.php?t=411

Argonaut, posted Wed Nov 26, 2014 11:52 pm (1997)

---

As it is with obscure Japanese drifting games that I am interested in comes with them no folders whatsoever within the ISO and large genericly-named bin files.. This dr1.bin is the first and the biggest of the lot, and the header formats- or atleast, the lengthy Hex buildup to them- are the same throughout.

2x 2MB Sample file link (in Zip format):

https://www.dropbox.com/s/d8y3lpf4uo5m8 ... s.rar?dl=0

Now for once, lets hope *somehow* this obscure company decides to use a common compression format.. pah!

aluigi, posted Thu Nov 27, 2014 2:44 pm (2014)

---

I don't know what obfuscation has been used.
I tried sequential xor and rot from start to end and viceversa but without results containing known data.

This is the testing script I wrote to do these checks in case someone is interested:

Code:

get SIZE asize
#encryption reverse ""
log MEMORY_FILE2 0 SIZE
encryption "" ""

putvarchr MEMORY_FILE SIZE 0
log MEMORY_FILE 0 0
    math X = 0
for i = 0 < SIZE
    get B byte MEMORY_FILE2
    math B2 = B
    math B ^= X
    math X = B2
    put B byte MEMORY_FILE
next i

log "test.dat" 0 SIZE MEMORY_FILE