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Line 372: − − CRO with extension .cro is used for "DLLs". CRS with extension .crs is in the same format of CRO but storing the symbol information of the static module (the main application). The end of the file is aligned to a 0x1000-byte boundary with 0xCC bytes. − − The first hash-table entry hashes the 0x100-byte header following the hash-table. The following hash-table entries hash the sections specified in the header. − − When the RO module loads the entire CRO into process memory(mapped in the 0x00100000-0x04000000 region), it modifies the mapped CRO data. The magic field is also changed to "FIXD" if fix level is not 0. − − Upon loading, the RO module will look for export symbol "nnroAeabiAtexit_" to patch it to its import symbol "__aeabi_atexit". − − For dumping symbols and loading a CRO into IDA, see [https://github.com/plutooo/ctr/] and [https://github.com/wwylele/IDA_plugin_CRO].
i just removed the file extension description to the top of the page, i linked this page as a reference in the discord and this information seemed *much* better suited at the top so it is not drowned out - specifically signed up to make this change, hopefully it is well-received
[[Category:File formats]]
[[Category:File formats]]
CRO with extension .cro is used for "DLLs". CRS with extension .crs is in the same format of CRO but storing the symbol information of the static module (the main application). The end of the file is aligned to a 0x1000-byte boundary with 0xCC bytes.
The first hash-table entry hashes the 0x100-byte header following the hash-table. The following hash-table entries hash the sections specified in the header.
When the RO module loads the entire CRO into process memory(mapped in the 0x00100000-0x04000000 region), it modifies the mapped CRO data. The magic field is also changed to "FIXD" if fix level is not 0.
Upon loading, the RO module will look for export symbol "nnroAeabiAtexit_" to patch it to its import symbol "__aeabi_atexit".
For dumping symbols and loading a CRO into IDA, see [https://github.com/plutooo/ctr/] and [https://github.com/wwylele/IDA_plugin_CRO].
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