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re-read internal buffer after moving file's contents

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This commit is contained in:
nganhkhoa 2024-08-26 16:00:17 +07:00
parent d9024990f9
commit 0640d38627
1 changed files with 10 additions and 0 deletions
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10
macho-go/pkg/ios/macho/edit.go
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@ -774,6 +774,16 @@ func (mc *MachoContext) RemoveStrings() {
copy(dummy, []byte("We R BShield\n")) copy(dummy, []byte("We R BShield\n"))
mc.file.WriteAt(dummy, int64(string_segment.Fileoff())) mc.file.WriteAt(dummy, int64(string_segment.Fileoff()))
// TODO: erase old strings
// re-read internal buffer
last, _ := mc.file.Seek(0, io.SeekEnd)
mc.buf = make([]byte, last)
mc.file.Seek(0, io.SeekStart)
if _, err := io.ReadFull(mc.file, mc.buf); err != nil {
// panic?
}
// loop over __TEXT,__text and find all occurances of (adrp, add) // loop over __TEXT,__text and find all occurances of (adrp, add)
// edit the offset to points to new region // edit the offset to points to new region
// because adrp sets the register to the address page at its address // because adrp sets the register to the address page at its address