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Get the sections header names before converting the rpl/rpx to elf

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This commit is contained in:
Maschell 2019-03-10 17:28:48 +01:00
parent 92a68e21fc
commit eba14fb8f5
2 changed files with 37 additions and 0 deletions
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14
src/main/java/de/mas/ghidra/utils/Utils.java
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@ -24,4 +24,18 @@ public class Utils {
} }
return buffer; return buffer;
} }
public static String stringFromStringTable(byte[] stringTable, int index) {
ByteBuffer buf = ByteBuffer.wrap(stringTable);
int pos = index;
StringBuilder result = new StringBuilder();
for (byte b; (b = buf.get(pos)) != 0; pos++) {
result.append((char) b);
}
return result.toString();
}
} }

23
src/main/java/de/mas/ghidra/wiiu/RPXUtils.java
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@ -38,6 +38,28 @@ public class RPXUtils {
long shdr_elf_offset = elfFile.e_ehsize() & 0xFFFFFFFF; long shdr_elf_offset = elfFile.e_ehsize() & 0xFFFFFFFF;
long shdr_data_elf_offset = shdr_elf_offset + elfFile.e_shnum() * elfFile.e_shentsize(); long shdr_data_elf_offset = shdr_elf_offset + elfFile.e_shnum() * elfFile.e_shentsize();
// Let's get / decompress the section header string table at first.
ElfSectionHeader sh_str_sh = elfFile.getSections()[elfFile.e_shstrndx()];
byte[] sh_str_sh_data = new byte[0];
if (sh_str_sh.getOffset() != 0) {
if ((sh_str_sh.getFlags() & SHT_NOBITS) != SHT_NOBITS) {
sh_str_sh_data = sh_str_sh.getData();
if ((sh_str_sh.getFlags() & SHF_RPL_ZLIB) == SHF_RPL_ZLIB) {
long section_size_inflated = ByteBuffer.wrap(Arrays.copyOf(sh_str_sh_data, 4)).getInt()
& 0xFFFFFFFF;
Inflater inflater = new Inflater();
inflater.setInput(sh_str_sh_data, 4, (int) sh_str_sh.getSize() - 4); // the first byte is the size
byte[] decompressed = new byte[(int) section_size_inflated];
inflater.inflate(decompressed);
inflater.end();
sh_str_sh_data = decompressed;
}
}
}
long curSymbolAddress = 0x01000000; long curSymbolAddress = 0x01000000;
for (ElfSectionHeader h : elfFile.getSections()) { for (ElfSectionHeader h : elfFile.getSections()) {
@ -45,6 +67,7 @@ public class RPXUtils {
long curSize = h.getSize(); long curSize = h.getSize();
long flags = h.getFlags(); long flags = h.getFlags();
long offset = h.getOffset(); long offset = h.getOffset();
String sectionName = Utils.stringFromStringTable(sh_str_sh_data, h.getName());
if (offset != 0) { if (offset != 0) {
if ((flags & SHT_NOBITS) != SHT_NOBITS) { if ((flags & SHT_NOBITS) != SHT_NOBITS) {