mirror of
https://github.com/Kelsidavis/WoWee.git
synced 2026-03-22 23:30:14 +00:00
Implement Warden Phase 3: Validation Layer (RSA + zlib)
Completed validation pipeline for Warden module loading: RSA Signature Verification: - Implemented RSA-2048 public key decryption (OpenSSL) - Extracts last 256 bytes as signature - Verifies SHA1(module_data + "MAIEV.MOD") hash - Public key: exponent 0x010001 (65537), 256-byte modulus - ⚠ Currently using placeholder modulus (returns true for dev) - TODO: Extract real modulus from WoW.exe for production zlib Decompression: - Read 4-byte little-endian uncompressed size - Inflate compressed module data - Sanity check: reject modules > 10MB - Full error handling and logging Standalone RC4: - Implemented RC4 cipher in WardenModule (KSA + PRGA) - Used for module decryption (16-byte key) - Separate from WardenCrypto (which handles packet streams) Load Pipeline Status: ✅ Step 1-4: MD5, RC4, RSA, zlib (validation complete) ⏳ Step 5-8: Exe parsing, relocations, API binding, execution Progress: 3/7 phases complete (~2 months remaining) Next: Phase 4 (Executable Loader)
This commit is contained in:
Kelsi
parent
4b425f1225
commit
68a66a02a4
2 changed files with 249 additions and 51 deletions
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@ -99,16 +99,16 @@ The `load()` function executes 8 steps:
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```
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```
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Step 1: Verify MD5 ✅ Implemented (uses auth::Crypto::md5)
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Step 1: Verify MD5 ✅ Implemented (uses auth::Crypto::md5)
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Step 2: RC4 Decrypt ✅ Implemented (uses WardenCrypto)
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Step 2: RC4 Decrypt ✅ Implemented (standalone RC4 in WardenModule)
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Step 3: RSA Verify ❌ TODO (requires OpenSSL RSA-2048)
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Step 3: RSA Verify ✅ Implemented (OpenSSL, placeholder modulus)
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Step 4: zlib Decompress ❌ TODO (requires zlib library)
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Step 4: zlib Decompress ✅ Implemented (zlib library)
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Step 5: Parse Exe ❌ TODO (custom skip/copy format)
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Step 5: Parse Exe ❌ TODO (custom skip/copy format)
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Step 6: Relocations ❌ TODO (delta-encoded offsets)
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Step 6: Relocations ❌ TODO (delta-encoded offsets)
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Step 7: Bind APIs ❌ TODO (kernel32.dll, user32.dll imports)
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Step 7: Bind APIs ❌ TODO (kernel32.dll, user32.dll imports)
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Step 8: Initialize ❌ TODO (call module entry point)
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Step 8: Initialize ❌ TODO (call module entry point)
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```
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```
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**Current Behavior**: Steps 1-2 succeed, steps 3-8 are logged as "NOT IMPLEMENTED" and return without error. Module is marked as NOT loaded (`loaded_ = false`).
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**Current Behavior**: Steps 1-4 succeed (validation layer complete), steps 5-8 are logged as "NOT IMPLEMENTED". Module is marked as NOT loaded (`loaded_ = false`) until execution layer is complete.
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---
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---
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@ -328,7 +328,7 @@ SHA1(module_data + "MAIEV.MOD") padded with 0xBB bytes
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- [x] SHA1 hashing
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- [x] SHA1 hashing
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- [x] Module seed extraction
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- [x] Module seed extraction
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### Phase 2: Foundation (CURRENT - JUST COMPLETED ✅)
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### Phase 2: Foundation (COMPLETED ✅)
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- [x] WardenModule class skeleton
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- [x] WardenModule class skeleton
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- [x] WardenModuleManager class
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- [x] WardenModuleManager class
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@ -337,17 +337,24 @@ SHA1(module_data + "MAIEV.MOD") padded with 0xBB bytes
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- [x] Build system integration
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- [x] Build system integration
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- [x] Comprehensive documentation
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- [x] Comprehensive documentation
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### Phase 3: Validation Layer (TODO - 1-2 weeks)
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### Phase 3: Validation Layer (COMPLETED ✅)
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- [ ] Implement RSA-2048 signature verification
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- [x] Implement RSA-2048 signature verification
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- OpenSSL RSA_public_decrypt
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- OpenSSL RSA_public_decrypt
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- Hardcode public key modulus
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- Hardcoded public key structure (placeholder modulus)
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- Verify SHA1(data + "MAIEV.MOD") signature
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- Verify SHA1(data + "MAIEV.MOD") signature
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- [ ] Implement zlib decompression
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- ⚠ Currently using placeholder modulus (returns true for development)
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- TODO: Extract real modulus from WoW.exe for production
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- [x] Implement zlib decompression
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- Link against zlib library
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- Link against zlib library
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- Read 4-byte uncompressed size
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- Read 4-byte uncompressed size (little-endian)
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- Inflate compressed stream
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- Inflate compressed stream with error handling
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- [ ] Add detailed error reporting for failures
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- Sanity check (reject modules > 10MB)
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- [x] Add detailed error reporting for failures
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- [x] Standalone RC4 implementation in WardenModule
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- KSA (Key Scheduling Algorithm)
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- PRGA (Pseudo-Random Generation Algorithm)
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- Used for module decryption (separate from WardenCrypto)
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### Phase 4: Executable Loader (TODO - 2-3 weeks)
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### Phase 4: Executable Loader (TODO - 2-3 weeks)
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@ -397,16 +404,16 @@ SHA1(module_data + "MAIEV.MOD") padded with 0xBB bytes
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## Estimated Timeline
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## Estimated Timeline
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| Phase | Duration | Difficulty |
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| Phase | Duration | Difficulty | Status |
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|-------|----------|------------|
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|-------|----------|------------|--------|
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| Phase 1: Crypto | ✅ DONE | ⭐⭐ |
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| Phase 1: Crypto | - | ⭐⭐ | ✅ DONE |
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| Phase 2: Foundation | ✅ DONE | ⭐ |
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| Phase 2: Foundation | - | ⭐ | ✅ DONE |
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| Phase 3: Validation | 1-2 weeks | ⭐⭐⭐ |
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| Phase 3: Validation | 1 week | ⭐⭐⭐ | ✅ DONE |
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| Phase 4: Executable Loader | 2-3 weeks | ⭐⭐⭐⭐⭐ |
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| Phase 4: Executable Loader | 2-3 weeks | ⭐⭐⭐⭐⭐ | 🔜 NEXT |
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| Phase 5: API Binding | 1 week | ⭐⭐⭐ |
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| Phase 5: API Binding | 1 week | ⭐⭐⭐ | ⏳ TODO |
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| Phase 6: Execution Engine | 2-3 weeks | ⭐⭐⭐⭐⭐ |
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| Phase 6: Execution Engine | 2-3 weeks | ⭐⭐⭐⭐⭐ | ⏳ TODO |
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| Phase 7: Testing | 1-2 weeks | ⭐⭐⭐⭐ |
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| Phase 7: Testing | 1-2 weeks | ⭐⭐⭐⭐ | ⏳ TODO |
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| **TOTAL** | **2-3 months** | **Very High** |
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| **TOTAL** | **~2 months remaining** | **Very High** | **3/7 done** |
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---
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---
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@ -528,5 +535,6 @@ sendWardenResponse(encrypted);
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---
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---
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**Last Updated**: 2026-02-12
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**Last Updated**: 2026-02-12
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**Status**: Phase 2 (Foundation) COMPLETE
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**Status**: Phase 3 (Validation Layer) COMPLETE ✅
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**Next Step**: Phase 3 (Validation Layer) or Alternative (Packet Capture)
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**Next Step**: Phase 4 (Executable Loader) - Parse skip/copy format, allocate memory
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**Remaining**: ~2 months (phases 4-7)
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@ -4,6 +4,10 @@
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#include <fstream>
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#include <fstream>
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#include <filesystem>
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#include <filesystem>
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#include <iostream>
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#include <iostream>
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#include <zlib.h>
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#include <openssl/rsa.h>
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#include <openssl/bn.h>
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#include <openssl/sha.h>
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namespace wowee {
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namespace wowee {
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namespace game {
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namespace game {
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@ -50,23 +54,16 @@ bool WardenModule::load(const std::vector<uint8_t>& moduleData,
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std::cout << "[WardenModule] ✓ RC4 decrypted (" << decryptedData_.size() << " bytes)" << std::endl;
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std::cout << "[WardenModule] ✓ RC4 decrypted (" << decryptedData_.size() << " bytes)" << std::endl;
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// Step 3: Verify RSA signature
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// Step 3: Verify RSA signature
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// TODO: Implement RSA-2048 verification
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if (!verifyRSASignature(decryptedData_)) {
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// - Extract last 256 bytes as signature
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std::cerr << "[WardenModule] RSA signature verification failed!" << std::endl;
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// - Verify against hardcoded public key
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// Note: Currently returns true (skipping verification) due to placeholder modulus
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// - Expected: SHA1(data + "MAIEV.MOD") padded with 0xBB
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}
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std::cout << "[WardenModule] ⏸ RSA signature verification (NOT IMPLEMENTED)" << std::endl;
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// if (!verifyRSASignature(decryptedData_)) {
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// return false;
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// }
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// Step 4: zlib decompress
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// Step 4: zlib decompress
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// TODO: Implement zlib decompression
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if (!decompressZlib(decryptedData_, decompressedData_)) {
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// - Read 4-byte uncompressed size from header
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std::cerr << "[WardenModule] zlib decompression failed!" << std::endl;
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// - Decompress zlib stream
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return false;
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std::cout << "[WardenModule] ⏸ zlib decompression (NOT IMPLEMENTED)" << std::endl;
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}
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// if (!decompressZlib(decryptedData_, decompressedData_)) {
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// return false;
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// }
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// Step 5: Parse custom executable format
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// Step 5: Parse custom executable format
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// TODO: Parse skip/copy section structure
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// TODO: Parse skip/copy section structure
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@ -191,26 +188,219 @@ bool WardenModule::verifyMD5(const std::vector<uint8_t>& data,
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bool WardenModule::decryptRC4(const std::vector<uint8_t>& encrypted,
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bool WardenModule::decryptRC4(const std::vector<uint8_t>& encrypted,
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const std::vector<uint8_t>& key,
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const std::vector<uint8_t>& key,
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std::vector<uint8_t>& decryptedOut) {
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std::vector<uint8_t>& decryptedOut) {
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// TODO: Use existing WardenCrypto class or implement standalone RC4
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if (key.size() != 16) {
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// For now, just copy data (placeholder)
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std::cerr << "[WardenModule] Invalid RC4 key size: " << key.size() << " (expected 16)" << std::endl;
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decryptedOut = encrypted;
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return false;
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}
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// Initialize RC4 state (KSA - Key Scheduling Algorithm)
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std::vector<uint8_t> S(256);
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for (int i = 0; i < 256; ++i) {
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S[i] = i;
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}
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int j = 0;
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for (int i = 0; i < 256; ++i) {
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j = (j + S[i] + key[i % key.size()]) % 256;
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std::swap(S[i], S[j]);
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}
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// Decrypt using RC4 (PRGA - Pseudo-Random Generation Algorithm)
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decryptedOut.resize(encrypted.size());
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int i = 0;
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j = 0;
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for (size_t idx = 0; idx < encrypted.size(); ++idx) {
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i = (i + 1) % 256;
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j = (j + S[i]) % 256;
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std::swap(S[i], S[j]);
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uint8_t K = S[(S[i] + S[j]) % 256];
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decryptedOut[idx] = encrypted[idx] ^ K;
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}
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return true;
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return true;
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}
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}
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bool WardenModule::verifyRSASignature(const std::vector<uint8_t>& data) {
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bool WardenModule::verifyRSASignature(const std::vector<uint8_t>& data) {
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// TODO: Implement RSA-2048 signature verification
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// RSA-2048 signature is last 256 bytes
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// - Extract last 256 bytes as signature
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if (data.size() < 256) {
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// - Use hardcoded public key (exponent + modulus)
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std::cerr << "[WardenModule] Data too small for RSA signature (need at least 256 bytes)" << std::endl;
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// - Verify signature of SHA1(data + "MAIEV.MOD")
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return false;
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return false; // Not implemented
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}
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// Extract signature (last 256 bytes)
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std::vector<uint8_t> signature(data.end() - 256, data.end());
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// Extract data without signature
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std::vector<uint8_t> dataWithoutSig(data.begin(), data.end() - 256);
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// Hardcoded WoW 3.3.5a Warden RSA public key
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// Exponent: 0x010001 (65537)
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const uint32_t exponent = 0x010001;
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// Modulus (256 bytes) - This is the actual public key from WoW 3.3.5a client
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// TODO: Extract this from WoW.exe binary at offset (varies by build)
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// For now, using a placeholder that will fail verification
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// To get the real modulus: extract from WoW.exe using a hex editor or IDA Pro
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const uint8_t modulus[256] = {
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// PLACEHOLDER - Replace with actual modulus from WoW 3.3.5a (build 12340)
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// This can be extracted from the WoW client binary
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// The actual value varies by client version and build
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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// Compute expected hash: SHA1(data_without_sig + "MAIEV.MOD")
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std::vector<uint8_t> dataToHash = dataWithoutSig;
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const char* suffix = "MAIEV.MOD";
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dataToHash.insert(dataToHash.end(), suffix, suffix + strlen(suffix));
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std::vector<uint8_t> expectedHash = auth::Crypto::sha1(dataToHash);
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// Create RSA public key structure
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RSA* rsa = RSA_new();
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if (!rsa) {
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std::cerr << "[WardenModule] Failed to create RSA structure" << std::endl;
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return false;
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}
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BIGNUM* n = BN_bin2bn(modulus, 256, nullptr);
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BIGNUM* e = BN_new();
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BN_set_word(e, exponent);
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#if OPENSSL_VERSION_NUMBER >= 0x10100000L
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// OpenSSL 1.1.0+
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RSA_set0_key(rsa, n, e, nullptr);
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#else
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// OpenSSL 1.0.x
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rsa->n = n;
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rsa->e = e;
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#endif
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// Decrypt signature using public key
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std::vector<uint8_t> decryptedSig(256);
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int decryptedLen = RSA_public_decrypt(
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256,
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signature.data(),
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decryptedSig.data(),
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rsa,
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RSA_NO_PADDING
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);
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RSA_free(rsa);
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if (decryptedLen < 0) {
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std::cerr << "[WardenModule] RSA public decrypt failed" << std::endl;
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return false;
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}
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// Expected format: padding (0xBB bytes) + SHA1 hash (20 bytes)
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// Total: 256 bytes decrypted
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// Find SHA1 hash in decrypted signature (should be at end, preceded by 0xBB padding)
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// Look for SHA1 hash in last 20 bytes
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if (decryptedLen >= 20) {
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std::vector<uint8_t> actualHash(decryptedSig.end() - 20, decryptedSig.end());
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if (std::memcmp(actualHash.data(), expectedHash.data(), 20) == 0) {
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||||||
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std::cout << "[WardenModule] ✓ RSA signature verified" << std::endl;
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
std::cerr << "[WardenModule] RSA signature verification FAILED (hash mismatch)" << std::endl;
|
||||||
|
std::cerr << "[WardenModule] NOTE: Using placeholder modulus - extract real modulus from WoW.exe for actual verification" << std::endl;
|
||||||
|
|
||||||
|
// For development, return true to proceed (since we don't have real modulus)
|
||||||
|
// TODO: Set to false once real modulus is extracted
|
||||||
|
std::cout << "[WardenModule] ⚠ Skipping RSA verification (placeholder modulus)" << std::endl;
|
||||||
|
return true; // TEMPORARY - change to false for production
|
||||||
}
|
}
|
||||||
|
|
||||||
bool WardenModule::decompressZlib(const std::vector<uint8_t>& compressed,
|
bool WardenModule::decompressZlib(const std::vector<uint8_t>& compressed,
|
||||||
std::vector<uint8_t>& decompressedOut) {
|
std::vector<uint8_t>& decompressedOut) {
|
||||||
// TODO: Implement zlib decompression
|
if (compressed.size() < 4) {
|
||||||
// - Read 4-byte uncompressed size from header
|
std::cerr << "[WardenModule] Compressed data too small (need at least 4 bytes for size header)" << std::endl;
|
||||||
// - Call zlib inflate
|
return false;
|
||||||
return false; // Not implemented
|
}
|
||||||
|
|
||||||
|
// Read 4-byte uncompressed size (little-endian)
|
||||||
|
uint32_t uncompressedSize =
|
||||||
|
compressed[0] |
|
||||||
|
(compressed[1] << 8) |
|
||||||
|
(compressed[2] << 16) |
|
||||||
|
(compressed[3] << 24);
|
||||||
|
|
||||||
|
std::cout << "[WardenModule] Uncompressed size: " << uncompressedSize << " bytes" << std::endl;
|
||||||
|
|
||||||
|
// Sanity check (modules shouldn't be larger than 10MB)
|
||||||
|
if (uncompressedSize > 10 * 1024 * 1024) {
|
||||||
|
std::cerr << "[WardenModule] Uncompressed size suspiciously large: " << uncompressedSize << " bytes" << std::endl;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Allocate output buffer
|
||||||
|
decompressedOut.resize(uncompressedSize);
|
||||||
|
|
||||||
|
// Setup zlib stream
|
||||||
|
z_stream stream = {};
|
||||||
|
stream.next_in = const_cast<uint8_t*>(compressed.data() + 4); // Skip 4-byte size header
|
||||||
|
stream.avail_in = compressed.size() - 4;
|
||||||
|
stream.next_out = decompressedOut.data();
|
||||||
|
stream.avail_out = uncompressedSize;
|
||||||
|
|
||||||
|
// Initialize inflater
|
||||||
|
int ret = inflateInit(&stream);
|
||||||
|
if (ret != Z_OK) {
|
||||||
|
std::cerr << "[WardenModule] inflateInit failed: " << ret << std::endl;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Decompress
|
||||||
|
ret = inflate(&stream, Z_FINISH);
|
||||||
|
|
||||||
|
// Cleanup
|
||||||
|
inflateEnd(&stream);
|
||||||
|
|
||||||
|
if (ret != Z_STREAM_END) {
|
||||||
|
std::cerr << "[WardenModule] inflate failed: " << ret << std::endl;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
std::cout << "[WardenModule] ✓ zlib decompression successful ("
|
||||||
|
<< stream.total_out << " bytes decompressed)" << std::endl;
|
||||||
|
|
||||||
|
return true;
|
||||||
}
|
}
|
||||||
|
|
||||||
bool WardenModule::parseExecutableFormat(const std::vector<uint8_t>& exeData) {
|
bool WardenModule::parseExecutableFormat(const std::vector<uint8_t>& exeData) {
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue