Working with binaries: Difference between revisions

Revision as of 15:44, 9 January 2023

Use gcc-arm-embedded from your Linux distribution package manager.

q3k maintains a Ghidra server with iPod binaries. Access available on request.

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-Compiling for 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.
+==GNU ARM toolchain==
-==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.
-==Assembling==
+== Ghidra ==
-<pre>
-arm-elf-as -o test.o test.asm
-arm-elf-ld -e 0 -Ttext=0 -o test.elf test.o
-arm-elf-objcopy -O binary test.elf test.bin
-</pre>
-==Disassembling==
+[[User:Q3k|q3k]] maintains a Ghidra server with iPod binaries. Access available on request.
-<pre>
-arm-elf-objdump -bbinary -marmv4 -D test.bin > test.asm
-</pre>
-==Preparing for IDA Pro demo==
-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:
-<pre>
-arm-elf-objcopy --change-addresses=0xff810000 -I binary -O elf32-littlearm -B arm dump.bin dump.elf
-arm-elf-objcopy --set-section-flags .data=code dump.elf
-</pre>
-==Helpful pages==
-http://chdk.wikia.com/wiki/GPL_Disassembling
-http://www.dwelch.com/ipod/