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happydance, posted Sun Oct 08, 2017 11:05 pm (27169)

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sorry this is kinda a noob question but the only code I could somewhat under stand is quickbms so i'm trying make this one work on quickbms..

Code:

#!/usr/bin/env python3



import sys

import zlib

import base64



zrif_dict = list(zlib.decompress(base64.b64decode(

  b"eNpjYBgFo2AU0AsYAIElGt8MRJiDCAsw3xhEmIAIU4N4AwNdRxcXZ3 /EJCAkW6Ac7C7ARwYgviuQAaIdoPSzlDaBUo7QmknIM3ACIZM78 u7kx3VWYEAGJ9HV0=")))



if len(sys.argv) != 2 and len(sys.argv) != 3:

  exit("Usage: %s zRIF [path/to/work.bin]" % sys.argv[0])



bin = base64.b64decode(sys.argv[1].encode("ascii"))



d = zlib.decompressobj(wbits=10, zdict=bytes(zrif_dict))

rif = d.decompress(bin)

rif  = d.flush()



output = sys.argv[2] if len(sys.argv) == 3 else "work.bin"

open(output, "wb").write(rif)

and the only thing similar I could find is this, but somewhat reverse

Code:

# File to compressed variable
# script for QuickBMS http://quickbms.aluigi.org

quickbmsver "0.5.33"

comtype zlib_compress
get SIZE asize
clog MEMORY_FILE 0 SIZE SIZE

comtype base64_compress
get SIZE asize MEMORY_FILE
clog MEMORY_FILE2 0 SIZE SIZE MEMORY_FILE

get NAME filename
string NAME  = ".compressed.txt"

get SIZE asize MEMORY_FILE2
log NAME 0 SIZE MEMORY_FILE2

so what should I do? should I decode the base64 text then use zlib to extract it? or should I use encryption?

so this text should output KO5ifR1dQ d7BRgYmptDbTE2NQTZ7 IZ4ouw0sQEn/90J3D7TUyw4ZmYdDUp9n/M0dEYH9wAABwnEtoA the work.bin attached

aluigi, posted Sun Oct 08, 2017 11:21 pm (27171)

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base64 decoding zlib decompression:

Code:

comtype base64
get SIZE asize
clog MEMORY_FILE 0 SIZE SIZE
comtype zlib_noerror
get SIZE asize MEMORY_FILE
clog "dump.dat" 0 SIZE SIZE MEMORY_FILE

happydance, posted Sun Oct 08, 2017 11:36 pm (27172)

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thanks for the quick response but the output file is some what different

I tried adding DICT

Code:

comtype base64 "eNpjYBgFo2AU0AsYAIElGt8MRJiDCAsw3xhEmIAIU4N4AwNdRxcXZ3 /EJCAkW6Ac7C7ARwYgviuQAaIdoPSzlDaBUo7QmknIM3ACIZM78 u7kx3VWYEAGJ9HV0="

but no luck, or should I read the file by text/line not by hex?

aluigi, posted Mon Oct 09, 2017 9:19 am (27181)

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You must provide the input file, that work.bin is the output.

The code should be the following but I can't test it without samples:

Code:

set MYDICT string "eNpjYBgFo2AU0AsYAIElGt8MRJiDCAsw3xhEmIAIU4N4AwNdRxcXZ3 /EJCAkW6Ac7C7ARwYgviuQAaIdoPSzlDaBUo7QmknIM3ACIZM78 u7kx3VWYEAGJ9HV0="
log MEMORY_FILE 0 0

math DICTSZ = 0
putct MYDICT string -1 MEMORY_FILE
callfunction ZBASE 1
math DICTSZ = SIZE
getdstring DICT DICTSZ MEMORY_FILE2

get SIZE asize
log MEMORY_FILE 0 SIZE
callfunction ZBASE 1

clog "dump.dat" 0 SIZE SIZE MEMORY_FILE2

startfunction ZBASE
    comtype base64
    get SIZE asize MEMORY_FILE
    clog MEMORY_FILE2 0 SIZE SIZE MEMORY_FILE
    comtype zlib_noerror DICT DICTSZ
    get SIZE asize MEMORY_FILE2
endfunction