我有一个 DVB (DTH) 盒固件的 bin 文件。我想更改那个 bin 文件中的一个图像，我该怎么做？请指导我正确的方向。

我试过 bin walk，但它提取的文件看起来没什么用。

下面是我试过的命令：

$ binwalk -B /Users/Me/Documents/Reverse/dump_all.bin 

DECIMAL       HEXADECIMAL     DESCRIPTION
--------------------------------------------------------------------------------
52150         0xCBB6          LZMA compressed data, properties: 0xC8, dictionary size: 16777216 bytes, uncompressed size: 65536 bytes
55216         0xD7B0          eCos RTOS string reference: "ecos.bin.lzma"
55232         0xD7C0          eCos RTOS string reference: "ecos.bin.gz"
66048         0x10200         JPEG image data, JFIF standard 1.02
66078         0x1021E         TIFF image data, big-endian, offset of first image directory: 8
68069         0x109E5         Unix path: /www.w3.org/1999/02/22-rdf-syntax-ns#' xmlns:iX='http://ns.adobe.com/iX/1.0/'>
68238         0x10A8E         Unix path: /ns.adobe.com/xap/1.0/mm/'>
131072        0x20000         romfs filesystem, version 1 size: 2439392 bytes, named "rom 5c67f699"
2621440       0x280000        CramFS filesystem, little endian, size: 12288 version 2 sorted_dirs CRC 0xA76D500A, edition 0, 5 blocks, 20 files
2883584       0x2C0000        CramFS filesystem, little endian, size: 819200 version 2 sorted_dirs CRC 0xB7F50F6A, edition 0, 976 blocks, 362 files
3739148       0x390E0C        Zlib compressed data, compressed
3741196       0x39160C        Zlib compressed data, compressed
3743756       0x39200C        Zlib compressed data, compressed
3744780       0x39240C        Zlib compressed data, compressed
3746316       0x392A0C        Zlib compressed data, compressed
3750924       0x393C0C        Zlib compressed data, compressed
3752460       0x39420C        Zlib compressed data, compressed
3753996       0x39480C        Zlib compressed data, compressed
3755532       0x394E0C        Zlib compressed data, compressed
3757068       0x39540C        Zlib compressed data, compressed
3758604       0x395A0C        Zlib compressed data, compressed
3867148       0x3B020C        Zlib compressed data, compressed
3901964       0x3B8A0C        Zlib compressed data, compressed
3903500       0x3B900C        Zlib compressed data, compressed
3905036       0x3B960C        Zlib compressed data, compressed
3906572       0x3B9C0C        Zlib compressed data, compressed
3908108       0x3BA20C        Zlib compressed data, compressed
3909644       0x3BA80C        Zlib compressed data, compressed
3911180       0x3BAE0C        Zlib compressed data, compressed
3912716       0x3BB40C        Zlib compressed data, compressed
3914252       0x3BBA0C        Zlib compressed data, compressed
4020748       0x3D5A0C        Zlib compressed data, compressed
4022284       0x3D600C        Zlib compressed data, compressed
4023820       0x3D660C        Zlib compressed data, compressed
4041740       0x3DAC0C        Zlib compressed data, compressed
4045836       0x3DBC0C        Zlib compressed data, compressed
4047372       0x3DC20C        Zlib compressed data, compressed
4064780       0x3E060C        Zlib compressed data, compressed
4065804       0x3E0A0C        Zlib compressed data, compressed
4133900       0x3F140C        Zlib compressed data, compressed
4135436       0x3F1A0C        Zlib compressed data, compressed
4140556       0x3F2E0C        Zlib compressed data, compressed
4142092       0x3F340C        Zlib compressed data, compressed
4147212       0x3F480C        Zlib compressed data, compressed
4148748       0x3F4E0C        Zlib compressed data, compressed

以及提取文件的第二个命令：

$ binwalk -e /Users/Me/Documents/Reverse/dump_all.bin -C /Users/me/Documents/Reverse/dump_all 

DECIMAL       HEXADECIMAL     DESCRIPTION
--------------------------------------------------------------------------------

WARNING: Extractor.execute failed to run external extractor '7z e -y '%e'': [Errno 2] No such file or directory
52150         0xCBB6          LZMA compressed data, properties: 0xC8, dictionary size: 16777216 bytes, uncompressed size: 65536 bytes
55216         0xD7B0          eCos RTOS string reference: "ecos.bin.lzma"
55232         0xD7C0          eCos RTOS string reference: "ecos.bin.gz"
66048         0x10200         JPEG image data, JFIF standard 1.02
66078         0x1021E         TIFF image data, big-endian, offset of first image directory: 8
68069         0x109E5         Unix path: /www.w3.org/1999/02/22-rdf-syntax-ns#' xmlns:iX='http://ns.adobe.com/iX/1.0/'>
68238         0x10A8E         Unix path: /ns.adobe.com/xap/1.0/mm/'>
131072        0x20000         romfs filesystem, version 1 size: 2439392 bytes, named "rom 5c67f699"

WARNING: Extractor.execute failed to run external extractor 'cramfsck -x '%%cramfs-root%%' '%e'': [Errno 2] No such file or directory

WARNING: Extractor.execute failed to run external extractor 'cramfsswap '%e' '%e.swap' && cramfsck -x '%%cramfs-root%%' '%e.swap'': [Errno 2] No such file or directory
2621440       0x280000        CramFS filesystem, little endian, size: 12288 version 2 sorted_dirs CRC 0xA76D500A, edition 0, 5 blocks, 20 files

WARNING: Extractor.execute failed to run external extractor 'cramfsck -x '%%cramfs-root%%' '%e'': [Errno 2] No such file or directory

WARNING: Extractor.execute failed to run external extractor 'cramfsswap '%e' '%e.swap' && cramfsck -x '%%cramfs-root%%' '%e.swap'': [Errno 2] No such file or directory
2883584       0x2C0000        CramFS filesystem, little endian, size: 819200 version 2 sorted_dirs CRC 0xB7F50F6A, edition 0, 976 blocks, 362 files
3739148       0x390E0C        Zlib compressed data, compressed
3741196       0x39160C        Zlib compressed data, compressed
3743756       0x39200C        Zlib compressed data, compressed
3744780       0x39240C        Zlib compressed data, compressed
3746316       0x392A0C        Zlib compressed data, compressed
3750924       0x393C0C        Zlib compressed data, compressed
3752460       0x39420C        Zlib compressed data, compressed
3753996       0x39480C        Zlib compressed data, compressed
3755532       0x394E0C        Zlib compressed data, compressed
3757068       0x39540C        Zlib compressed data, compressed
3758604       0x395A0C        Zlib compressed data, compressed
3867148       0x3B020C        Zlib compressed data, compressed
3901964       0x3B8A0C        Zlib compressed data, compressed
3903500       0x3B900C        Zlib compressed data, compressed
3905036       0x3B960C        Zlib compressed data, compressed
3906572       0x3B9C0C        Zlib compressed data, compressed
3908108       0x3BA20C        Zlib compressed data, compressed
3909644       0x3BA80C        Zlib compressed data, compressed
3911180       0x3BAE0C        Zlib compressed data, compressed
3912716       0x3BB40C        Zlib compressed data, compressed
3914252       0x3BBA0C        Zlib compressed data, compressed
4020748       0x3D5A0C        Zlib compressed data, compressed
4022284       0x3D600C        Zlib compressed data, compressed
4023820       0x3D660C        Zlib compressed data, compressed
4041740       0x3DAC0C        Zlib compressed data, compressed
4045836       0x3DBC0C        Zlib compressed data, compressed
4047372       0x3DC20C        Zlib compressed data, compressed
4064780       0x3E060C        Zlib compressed data, compressed
4065804       0x3E0A0C        Zlib compressed data, compressed
4133900       0x3F140C        Zlib compressed data, compressed
4135436       0x3F1A0C        Zlib compressed data, compressed
4140556       0x3F2E0C        Zlib compressed data, compressed
4142092       0x3F340C        Zlib compressed data, compressed
4147212       0x3F480C        Zlib compressed data, compressed
4148748       0x3F4E0C        Zlib compressed data, compressed

输出文件夹如下所示：

我也试过7zip解压文件，下面是解压文件截图：

看起来 7zip 提取了我正在寻找的文件结构，但问题是它没有提取文件，只有文件夹，而且还有一条错误消息：

这是固件的链接。