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add: dynamic Windows APIs, blank IAT fix: misc & linux build

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ALittlePatate
2024-08-22 11:29:59 +02:00
parent 1c451dc828
commit e5603117d4
21 changed files with 908 additions and 265 deletions
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97
src/api.c
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@@ -6,6 +6,7 @@
#endif
#include <stdio.h>
#include "libc.h"
#ifdef _WIN32
extern int dprintf(int stream, const char *format, ...);
@@ -17,8 +18,8 @@ void api_put() {
int f = fstream;
#ifdef _WIN32
if (f == _fileno(stderr))
f = _fileno(stdout);
if (f == 2) //stderr (could use _fileno(stderr) but it uses the stdlib)
f = 1; //stdout
#else
if (f == fileno(stderr))
f = fileno(stdout);
@@ -31,46 +32,68 @@ void api_put() {
dprintf(f, "%c", c); //using printf and not write because of the buffer
}
else {
dprintf(f, "%lld", state->STACK[state->STACK_IDX--]);
#ifdef _WIN32
dprintf(f, "%ld", state->STACK[state->STACK_IDX--]);
#else
dprintf(f, "%lld", state->STACK[state->STACK_IDX--]);
#endif
}
}
void api_getasynckeystate() {
#ifdef _WIN32
state->registers->eax = GetAsyncKeyState((int)state->STACK[state->STACK_IDX--]);
#else
state->STACK_IDX--;
state->registers->eax = 1;
#endif
}
void api_virtualalloc() {
#ifdef _WIN32
long long address = state->STACK[state->STACK_IDX--];
long long size = state->STACK[state->STACK_IDX--];
long long alloctype = state->STACK[state->STACK_IDX--];
long long flprotect = state->STACK[state->STACK_IDX--];
state->registers->eax = (long long)VirtualAlloc((LPVOID)address, (SIZE_T)size, (DWORD)alloctype, (DWORD)flprotect);
#else
state->STACK_IDX -= 4;
state->registers->eax = 1;
#endif
}
void api_virtualfree() {
#ifdef _WIN32
long long address = state->STACK[state->STACK_IDX--];
long long size = state->STACK[state->STACK_IDX--];
long long freetype = state->STACK[state->STACK_IDX--];
state->registers->eax = VirtualFree((LPVOID)address, (SIZE_T)size, (DWORD)freetype);
#else
state->STACK_IDX -= 3;
state->registers->eax = 1;
#endif
}
void api_callrawaddr() {
long long address = state->STACK[state->STACK_IDX--];
((void (*)())address)();
}
// generated APIs here
#ifdef _WIN32
typedef LPVOID(WINAPI *fVirtualAlloc)(LPVOID, DWORD, DWORD, DWORD);
#endif
void api_VirtualAlloc(void) {
#ifdef _WIN32
fVirtualAlloc pVirtualAlloc = GetApi(L"kernel32.dll", "VirtualAlloc");
long long arg0 = state->STACK[state->STACK_IDX--];
long long arg1 = state->STACK[state->STACK_IDX--];
long long arg2 = state->STACK[state->STACK_IDX--];
long long arg3 = state->STACK[state->STACK_IDX--];
state->registers->eax = (long long)pVirtualAlloc((LPVOID)arg0, (DWORD)arg1, (DWORD)arg2, (DWORD)arg3);
#else
state->STACK_IDX -= 4;
state->registers->eax = 1;
#endif
}
#ifdef _WIN32
typedef BOOL(WINAPI *fVirtualFree)(LPVOID, DWORD, DWORD);
#endif
void api_VirtualFree(void) {
#ifdef _WIN32
fVirtualFree pVirtualFree = GetApi(L"kernel32.dll", "VirtualFree");
long long arg0 = state->STACK[state->STACK_IDX--];
long long arg1 = state->STACK[state->STACK_IDX--];
long long arg2 = state->STACK[state->STACK_IDX--];
state->registers->eax = (long long)pVirtualFree((LPVOID)arg0, (DWORD)arg1, (DWORD)arg2);
#else
state->STACK_IDX -= 3;
state->registers->eax = 1;
#endif
}
#ifdef _WIN32
typedef SHORT(WINAPI *fGetAsyncKeyState)(int);
#endif
void api_GetAsyncKeyState(void) {
#ifdef _WIN32
fGetAsyncKeyState pGetAsyncKeyState = GetApi(L"user32.dll", "GetAsyncKeyState");
long long arg0 = state->STACK[state->STACK_IDX--];
state->registers->eax = (long long)pGetAsyncKeyState((int)arg0);
#else
state->STACK_IDX -= 1;
state->registers->eax = 1;
#endif
}