From dabd353bbeac1db15199d75b7712c49940e544e0 Mon Sep 17 00:00:00 2001
From: username <1557729811@qq.com>
Date: Wed, 3 Jan 2024 22:40:10 +0800
Subject: [PATCH] fix a bug in PerformBaseRelocation
---
MemoryModule.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/MemoryModule.c b/MemoryModule.c
index 9f95a70..b4c2a0c 100644
--- a/MemoryModule.c
+++ b/MemoryModule.c
@@ -382,6 +382,7 @@ static BOOL
PerformBaseRelocation(PMEMORYMODULE module, ptrdiff_t delta)
{
unsigned char *codeBase = module->codeBase;
+ DWORD relocation_size;
PIMAGE_BASE_RELOCATION relocation;
PIMAGE_DATA_DIRECTORY directory = GET_HEADER_DICTIONARY(module, IMAGE_DIRECTORY_ENTRY_BASERELOC);
@@ -389,11 +390,16 @@ PerformBaseRelocation(PMEMORYMODULE module, ptrdiff_t delta)
return (delta == 0);
}
+ relocation_size = directory->Size;
relocation = (PIMAGE_BASE_RELOCATION) (codeBase + directory->VirtualAddress);
- for (; relocation->VirtualAddress > 0; ) {
+
+ for (;relocation_size; ) {
DWORD i;
unsigned char *dest = codeBase + relocation->VirtualAddress;
unsigned short *relInfo = (unsigned short*) OffsetPointer(relocation, IMAGE_SIZEOF_BASE_RELOCATION);
+
+ relocation_size -= relocation->SizeOfBlock;
+
for (i=0; i<((relocation->SizeOfBlock-IMAGE_SIZEOF_BASE_RELOCATION) / 2); i++, relInfo++) {
// the upper 4 bits define the type of relocation
int type = *relInfo >> 12;
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