mirror of
https://github.com/hrydgard/ppsspp.git
synced 2026-09-30 00:06:42 +02:00
Henrik Rydgård
1a1430e8ca
--re-decrypt runs pspDecryptPRX() over a file and unpacks the KL4E/KL3E stream behind it. This opens up flash0:/kd/resource/*.img, the images the Media Engine actually runs: they are ordinary tagged containers (tag 862648D1, which PrxDecrypter already has a key for) with the ~PSP signature blanked, so the normal module loader never touches them. --re-raw-base analyzes --re-module as a flat code image at a given address rather than as a PRX. The decrypted ME images are raw MIPS with no ELF around them; the address they were linked for is recoverable from their own jal targets (0x08300000 for meimg.img). Also makes PrxDecrypter.h self-contained - PSP_Header is built from _le types, so it needs Common/Swap.h rather than relying on the includer.
49 lines
2.0 KiB
C++
49 lines
2.0 KiB
C++
// Copyright (c) 2026- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include <string>
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#include "Common/CommonTypes.h"
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struct ReverseEngineerOptions {
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// PRX/ELF to load. A host path, or a PSP path like "flash0:/kd/libmp3.prx" (resolved
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// against the configured NAND directory).
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std::string modulePath;
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// Where to write the report. Created if missing.
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std::string outDir;
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// If set, only this function is disassembled (by name, or "0x08801234").
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std::string funcFilter;
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// Optional .syms file applied before dumping, so names show up in every caller.
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std::string symsFile;
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// If non-zero, modulePath is a flat code image rather than a PRX: it's copied to this
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// address and scanned directly, with no loader, no relocation and no imports/exports.
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u32 rawBase = 0;
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bool verbose = false;
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};
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// Loads a module standalone (no game), analyzes it, and writes a report. Returns a process
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// exit code.
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int RunReverseEngineer(const ReverseEngineerOptions &opts);
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// Decrypts one encrypted PSP file and writes the plaintext, without loading anything.
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// Handles any container pspDecryptPRX() knows a tag for - including the ME images in
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// flash0:/kd/resource, which are ordinary tagged containers with the signature blanked, so the
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// normal module loader won't touch them. Returns a process exit code.
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int RunDecryptFile(const std::string &inPath, const std::string &outPath);
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