GitHub/ipsw
1
0
Fork 0
mirror of https://github.com/blacktop/ipsw.git synced 2026-06-07 12:27:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

fix: ipsw dsc disass got/auth_ptr parsing

Browse Source
This commit is contained in:
blacktop
2025-05-04 16:33:33 -06:00
parent 9a0b0b60dd
commit 3c9ea41fc2
1 changed files with 20 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
pkg/dyld/image.go
+20 -3
View File
@@ -742,15 +742,32 @@ func (i *CacheImage) ParseObjC() error {
// ParseGOT parse global offset table in MachO
func (i *CacheImage) ParseGOT() error {
i.Analysis.GotPointers = make(map[uint64]uint64)
m, err := i.GetPartialMacho()
if err != nil {
return fmt.Errorf("failed to get MachO for image %s; %v", i.Name, err)
}
defer m.Close()
i.Analysis.GotPointers, err = disass.ParseGotPtrs(m)
if err != nil {
return err
for _, secName := range []string{"__got", "__auth_got", "__auth_ptr"} {
for _, sec := range m.Sections {
if (sec.Seg == "__AUTH_CONST" || sec.Seg == "__DATA_CONST") && sec.Name == secName {
dat := make([]byte, sec.Size)
if _, err := i.ReadAtAddr(dat, sec.Addr); err != nil {
return fmt.Errorf("failed to read GOT section %s: %v", secName, err)
}
ptrs := make([]uint64, sec.Size/8)
if err := binary.Read(bytes.NewReader(dat), binary.LittleEndian, &ptrs); err != nil {
return fmt.Errorf("failed to read %s.%s got pointers; %v", sec.Seg, sec.Name, err)
}
for idx, ptr := range ptrs {
if ptr != 0 {
i.Analysis.GotPointers[sec.Addr+uint64(idx*8)] = i.cache.SlideInfo.SlidePointer(ptr)
}
}
}
}
}
i.Analysis.State.SetGot(true)