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| | ==GNU ARM toolchain== | | ==GNU ARM toolchain== |
| − | Working with the ARM platform requires a special toolchain. The GNU ARM toolchain has all the basic tools needed to build and examine software on the iPod.
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| − | ===Obtaining===
| + | Use gcc-arm-embedded from your Linux distribution package manager. |
| − | The GNU ARM toolchain can be downloaded from http://www.gnuarm.com/. You can either download source or binaries. Put the binaries in your system path.
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| − | ===Assembling=== | + | == Ghidra == |
| − | <pre>
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| − | arm-elf-as -o test.o test.asm
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| − | arm-elf-ld -e 0 -Ttext=0 -o test.elf test.o
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| − | arm-elf-objcopy -O binary test.elf test.bin
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| − | </pre>
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| | | | |
| − | ===Disassembling===
| + | [[User:Q3k|q3k]] maintains a Ghidra server with iPod binaries. Access available on request. |
| − | <pre>
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| − | arm-elf-objdump -bbinary -marmv4 -D test.bin > test.asm
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| − | </pre>
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| − | | |
| − | ==IDA Pro demo==
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| − | ===IDA Pro 5.7 paid===
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| − | This is the best version if you can pay. One of the main advantages over its demo version is that you can save project files.
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| − | ===IDA Pro 5.7 demo===
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| − | This is the best version if you don't want to pay. It can't save or open binary files, but there is a workaround to opening binaries.
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| − | The IDA Pro demo can't open raw ARM files but it can open ELF files. We need to convert the raw binaries to ELF binaries as a workaround. Assuming the input file is called "dump.bin" and the output will be called "dump.elf", run these commands:
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| − | <pre>
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| − | arm-elf-objcopy --change-addresses=0xff810000 -I binary -O elf32-littlearm -B arm dump.bin dump.elf
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| − | arm-elf-objcopy --set-section-flags .data=code dump.elf
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| − | </pre>
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| − | ===IDA Pro 4.9 freeware===
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| − | This version is tempting to download but useless since it doesn't support ARM.
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| − | | |
| − | ==Helpful pages==
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| − | http://chdk.wikia.com/wiki/GPL_Disassembling
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| − | | |
| − | http://www.dwelch.com/ipod/
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Latest revision as of 18:44, 9 January 2023
GNU ARM toolchain
Use gcc-arm-embedded from your Linux distribution package manager.
Ghidra
q3k maintains a Ghidra server with iPod binaries. Access available on request.
