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Show content passed to our function

This commit is contained in:
Quentin 2017-10-19 21:08:33 +02:00
parent a61bd93a9d
commit 8ae6da7f18
1 changed files with 12 additions and 3 deletions
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15
Observer/dllmain.cpp
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@ -2,6 +2,7 @@
#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <string>
/*
Function to patch
@ -23,8 +24,9 @@ Function to patch
.text:00403B83 C2 08 00 retn 8
*/
void __stdcall LogMessageWrapperHook() {
std::cout << "[OK] Message wrapped called :D :D :D" << std::endl;
void __stdcall LogMessageWrapperHook(char* message, size_t message_length) {
std::string content(message, message_length);
std::cout << content << std::endl;
}
__declspec(naked) void TrampolineLogMessageWrapperHook()
@ -34,6 +36,9 @@ __declspec(naked) void TrampolineLogMessageWrapperHook()
// Save registers
PUSHAD
PUSH [esp + 32 + 8 ] // PUSHAD + shift of 8
PUSH [esp + 32 + 4 + 4 ] // PUSHAD + prev. PUSH + shift of 4
// Call our hook
CALL LogMessageWrapperHook
@ -81,7 +86,11 @@ void initDll() {
}
// Change the instruction by JMP Trampoline
*addressToPatch = 0xE9; // JMP INT32 --- char = 1 octet
// JMP INT32 --- char = 1 octet
*addressToPatch = 0xE9;
*(unsigned int*) (addressToPatch + 1) = (unsigned int) TrampolineLogMessageWrapperHook - ((unsigned int) addressToPatch + 5);
std::cout << "[OK] Memory written." << std::endl;