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Restore 0.85 compatibility for PS3 Binary Decryption

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0.85 elfs break here due to them not having a version header offset.

Very unlikely these elfs will ever load but its useful to be able to decrypt them at least.

Co-authored-by: Elad <18193363+elad335@users.noreply.github.com>
This commit is contained in:
Haxy 2026-05-03 00:28:47 +01:00 • committed by Elad
parent 155883ea2a
commit a6fb0c8931
1 changed files with 19 additions and 7 deletions
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26
rpcs3/Crypto/unself.cpp
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@ -807,6 +807,8 @@ bool SELFDecrypter::LoadHeaders(bool isElf32, SelfAdditionalInfo* out_info)
self_f.seek(0);
sce_hdr.Load(self_f);
const usz self_size = self_f.size();
if (out_info)
{
*out_info = {};
@ -880,8 +882,9 @@ bool SELFDecrypter::LoadHeaders(bool isElf32, SelfAdditionalInfo* out_info)
for(u32 i = 0; i < (isElf32 ? elf32_hdr.e_phnum : elf64_hdr.e_phnum); ++i)
{
if (self_f.pos() >= self_f.size())
if (self_f.pos() >= self_size)
{
// Read out of bounds (file is truncated or corrupted)
return false;
}
@ -889,15 +892,23 @@ bool SELFDecrypter::LoadHeaders(bool isElf32, SelfAdditionalInfo* out_info)
m_seg_ext_hdr.back().Load(self_f);
}
if (m_ext_hdr.version_hdr_offset == 0 || utils::add_saturate<u64>(m_ext_hdr.version_hdr_offset, sizeof(version_header)) > self_f.size())
if (m_ext_hdr.version_hdr_offset == 0)
{
// 0.85 Selfs have version_hdr_offset set to 0
m_version_hdr = {};
}
else if (utils::add_saturate<u64>(m_ext_hdr.version_hdr_offset, sizeof(version_header)) > self_size)
{
// Read out of bounds (file is truncated or corrupted)
return false;
}
else
{
// Read SCE version info.
self_f.seek(m_ext_hdr.version_hdr_offset);
// Read SCE version info.
self_f.seek(m_ext_hdr.version_hdr_offset);
m_version_hdr.Load(self_f);
m_version_hdr.Load(self_f);
}
// Read control info.
m_supplemental_hdr_arr.clear();
@ -905,8 +916,9 @@ bool SELFDecrypter::LoadHeaders(bool isElf32, SelfAdditionalInfo* out_info)
for (u64 i = 0; i < m_ext_hdr.supplemental_hdr_size;)
{
if (self_f.pos() >= self_f.size())
if (self_f.pos() >= self_size)
{
// Read out of bounds (file is truncated or corrupted)
return false;
}