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-rw-r--r--README1
-rwxr-xr-xmempoke/build.sh4
-rw-r--r--mempoke/mempoke-injector.c153
-rw-r--r--mempoke/mempoke-target.c67
4 files changed, 0 insertions, 225 deletions
diff --git a/README b/README
index 132e2b1..794c0e2 100644
--- a/README
+++ b/README
@@ -10,7 +10,6 @@ guaranteed to be correct, performant, safe, or (generally speaking) good.
aarch64 AArch64 assembly experiments
ffmpeg-shadertoy Basic offline Shadertoy renderer
-mempoke Read/write to another process's memory
vk-cube Spinning cube Vulkan demo
win-resize-mt Drawing while resizing on Windows (multi threaded)
win-resize-st Drawing while resizing on Windows (single threaded)
diff --git a/mempoke/build.sh b/mempoke/build.sh
deleted file mode 100755
index ed4c5a8..0000000
--- a/mempoke/build.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-mkdir -p bin
-cc -o bin/mempoke-target -Wall -Wextra -Wpedantic -O0 -g ./mempoke-target.c
-cc -o bin/mempoke-injector -Wall -Wextra -Wpedantic -O0 -g ./mempoke-injector.c
diff --git a/mempoke/mempoke-injector.c b/mempoke/mempoke-injector.c
deleted file mode 100644
index 2d1c4a9..0000000
--- a/mempoke/mempoke-injector.c
+++ /dev/null
@@ -1,153 +0,0 @@
-// ================================================================================================
-// Example showing how to read/write process memory remotely.
-//
-// License:
-// Copyright (c) 2026 Hunter Kvalevog
-//
-// Permission to use, copy, modify, and/or distribute this software for any
-// purpose with or without fee is hereby granted.
-//
-// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-// WITH REGARD TO THIS SOFTWARE.
-// ================================================================================================
-
-#define _GNU_SOURCE
-
-#ifdef _WIN32
-# include <windows.h>
-# include <psapi.h>
-# include <tlhelp32.h>
-#endif
-
-#ifdef __linux__
-# include <dirent.h>
-# include <sys/uio.h>
-#endif
-
-#include <assert.h>
-#include <inttypes.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-typedef struct ProcessHandle ProcessHandle;
-struct ProcessHandle
-{
- int pid;
- uintptr_t base;
-#ifdef _WIN32
- HANDLE handle;
-#endif
-};
-
-static inline void open_target_process(ProcessHandle *p)
-{
-#ifdef _WIN32
- // ref: https://docs.microsoft.com/en-us/windows/win32/toolhelp/taking-a-snapshot-and-viewing-processes
- HANDLE snap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
- assert(snap != INVALID_HANDLE_VALUE);
-
- PROCESSENTRY32 pe = { .dwSize = sizeof(PROCESSENTRY32) };
- Process32First(snap, &pe);
-
- do {
- if (!strcmp(pe.szExeFile, "mempoke-target.exe")) {
- p->pid = pe.th32ProcessID;
- p->handle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, p->pid);
- assert(p->handle && "failed to open process");
-
- // First module is always the exe itself
- HMODULE exe = 0;
- DWORD needed = 0;
- if (!EnumProcessModules(p->handle, &exe, sizeof(exe), &needed)) {
- assert(0 && "EnumProcessModules failed");
- }
- p->base = (uintptr_t)exe;
-
- return;
- }
- } while (Process32Next(snap, &pe));
-#endif
-#ifdef __linux__
- DIR *proc = opendir("/proc");
-
- struct dirent *d;
- while ((d = readdir(proc))) {
- pid_t pid = (pid_t)atoi(d->d_name);
- if (pid <= 0)
- continue;
-
- char comm[256];
- snprintf(comm, sizeof(comm), "/proc/%d/comm", pid);
-
- FILE *f = fopen(comm, "r");
- if (!f)
- continue;
-
- if (fgets(comm, sizeof(comm), f) && !strncmp(comm, "mempoke-target", 14)) {
- p->pid = pid;
-
- char maps_path[64];
- snprintf(maps_path, sizeof(maps_path), "/proc/%d/maps", p->pid);
-
- FILE *maps = fopen(maps_path, "r");
- fscanf(maps, "%" SCNxPTR "-", &p->base);
- fclose(maps);
- fclose(f);
- return;
- }
-
- fclose(f);
- }
-#endif
- assert(0 && "couldn't find process");
-}
-
-int main(int argc, const char **argv)
-{
- const uintptr_t offset = (argc > 1) ? strtoull(argv[1], 0, 0) : 0;
- if (!offset) {
- printf("Usage: %s <offset>\n example: %s 0x1234\n", argv[0], argv[0]);
- return 1;
- }
-
- ProcessHandle p;
- open_target_process(&p);
-
- printf("target process: pid=%d base=0x%" PRIxPTR "\n", p.pid, p.base);
-
- int num = 0;
- uintptr_t tgt = p.base + offset;
-
-#ifdef _WIN32
- if (!ReadProcessMemory(p.handle, (LPCVOID)tgt, &num, sizeof(num), 0)) {
- assert(0 && "ReadProcessMemory failed");
- }
-#endif
-#ifdef __linux__
- struct iovec iov_rsrc = { .iov_base = (void *)tgt, .iov_len = sizeof(num) };
- struct iovec iov_rdst = { .iov_base = &num, .iov_len = sizeof(num) };
- if (process_vm_readv(p.pid, &iov_rdst, 1, &iov_rsrc, 1, 0) != sizeof(num)) {
- assert(0 && "process_vm_readv failed");
- }
-#endif
-
- printf("tgtnum = %d\n", num);
-
- num += 1;
-
-#ifdef _WIN32
- if (!WriteProcessMemory(p.handle, (LPVOID)tgt, &num, sizeof(num), 0)) {
- assert(0 && "WriteProcessMemory failed");
- }
-#endif
-#ifdef __linux__
- struct iovec iov_wsrc = { .iov_base = &num, .iov_len = sizeof(num) };
- struct iovec iov_wdst = { .iov_base = (void *)tgt, .iov_len = sizeof(num) };
- if (process_vm_writev(p.pid, &iov_wsrc, 1, &iov_wdst, 1, 0) != sizeof(num)) {
- assert(0 && "process_vm_writev failed");
- }
-#endif
-}
-
diff --git a/mempoke/mempoke-target.c b/mempoke/mempoke-target.c
deleted file mode 100644
index 2c34780..0000000
--- a/mempoke/mempoke-target.c
+++ /dev/null
@@ -1,67 +0,0 @@
-// ================================================================================================
-// Example showing how to read/write process memory remotely.
-//
-// License:
-// Copyright (c) 2026 Hunter Kvalevog
-//
-// Permission to use, copy, modify, and/or distribute this software for any
-// purpose with or without fee is hereby granted.
-//
-// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-// WITH REGARD TO THIS SOFTWARE.
-// ================================================================================================
-
-#ifdef _WIN32
-# include <windows.h>
-#endif
-
-#ifdef __linux__
-# include <unistd.h>
-#endif
-
-#include <assert.h>
-#include <inttypes.h>
-#include <stdint.h>
-#include <stdio.h>
-
-int tgtnum = 1;
-
-static inline uintptr_t get_process_base_address(void)
-{
- uintptr_t base = 0;
-#ifdef _WIN32
- base = (uintptr_t)GetModuleHandleW(0);
-#endif
-#ifdef __linux__
- FILE *maps = fopen("/proc/self/maps", "r");
- fscanf(maps, "%" SCNxPTR "-", &base);
- fclose(maps);
-#endif
- assert(base);
- return base;
-}
-
-static inline void sleep_ms(unsigned ms)
-{
-#ifdef _WIN32
- Sleep(ms);
-#endif
-#ifdef __linux__
- usleep(ms * 1000);
-#endif
-}
-
-int main(int argc, const char **argv)
-{
- (void)argc;
- (void)argv;
-
- printf("offset: 0x%" PRIxPTR "\n", (uintptr_t)&tgtnum - get_process_base_address());
- sleep_ms(3000);
-
- while (1) {
- sleep_ms(1000);
- printf("tgtnum: %d\n", tgtnum);
- }
-}
-
generated by cgit v1.2.3 (git 2.46.0) at 2026-08-19 06:50:06 +0000