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proc.c
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proc.c
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// golden
// 6/12/2018
//
#include "../include/../include/proc.h"
#include "../include/../include/compare.h"
int proc_list_handle(int fd, struct cmd_packet *packet) {
void *data;
uint64_t num;
uint32_t length;
sys_proc_list(NULL, &num);
if (num > 0) {
length = sizeof(struct proc_list_entry) * num;
data = pfmalloc(length);
if (!data) {
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
sys_proc_list(data, &num);
net_send_status(fd, CMD_SUCCESS);
net_send_data(fd, &num, sizeof(uint32_t));
net_send_data(fd, data, length);
free(data);
return 0;
}
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
int proc_read_handle(int fd, struct cmd_packet *packet) {
struct cmd_proc_read_packet *rp;
void *data;
uint64_t left;
uint64_t address;
rp = (struct cmd_proc_read_packet *)packet->data;
if (rp) {
// allocate a small buffer
data = pfmalloc(NET_MAX_LENGTH);
if (!data) {
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
net_send_status(fd, CMD_SUCCESS);
left = rp->length;
address = rp->address;
// send by chunks
while (left > 0) {
memset(data, NULL, NET_MAX_LENGTH);
if (left > NET_MAX_LENGTH) {
sys_proc_rw(rp->pid, address, data, NET_MAX_LENGTH, 0);
net_send_data(fd, data, NET_MAX_LENGTH);
address += NET_MAX_LENGTH;
left -= NET_MAX_LENGTH;
} else {
sys_proc_rw(rp->pid, address, data, left, 0);
net_send_data(fd, data, left);
address += left;
left -= left;
}
}
free(data);
return 0;
}
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
int proc_write_handle(int fd, struct cmd_packet *packet) {
struct cmd_proc_write_packet *wp;
void *data;
uint64_t left;
uint64_t address;
wp = (struct cmd_proc_write_packet *)packet->data;
if (wp) {
// only allocate a small buffer
data = pfmalloc(NET_MAX_LENGTH);
if (!data) {
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
net_send_status(fd, CMD_SUCCESS);
left = wp->length;
address = wp->address;
// write in chunks
while (left > 0) {
if (left > NET_MAX_LENGTH) {
net_recv_data(fd, data, NET_MAX_LENGTH, 1);
sys_proc_rw(wp->pid, address, data, NET_MAX_LENGTH, 1);
address += NET_MAX_LENGTH;
left -= NET_MAX_LENGTH;
} else {
net_recv_data(fd, data, left, 1);
sys_proc_rw(wp->pid, address, data, left, 1);
address += left;
left -= left;
}
}
net_send_status(fd, CMD_SUCCESS);
free(data);
return 0;
}
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
int proc_maps_handle(int fd, struct cmd_packet *packet) {
struct cmd_proc_maps_packet *mp;
struct sys_proc_vm_map_args args;
uint32_t size;
uint32_t num;
mp = (struct cmd_proc_maps_packet *)packet->data;
if (mp) {
memset(&args, NULL, sizeof(args));
if (sys_proc_cmd(mp->pid, SYS_PROC_VM_MAP, &args)) {
net_send_status(fd, CMD_ERROR);
return 1;
}
size = args.num * sizeof(struct proc_vm_map_entry);
args.maps = (struct proc_vm_map_entry *)pfmalloc(size);
if (!args.maps) {
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
if (sys_proc_cmd(mp->pid, SYS_PROC_VM_MAP, &args)) {
free(args.maps);
net_send_status(fd, CMD_ERROR);
return 1;
}
net_send_status(fd, CMD_SUCCESS);
num = (uint32_t)args.num;
net_send_data(fd, &num, sizeof(uint32_t));
net_send_data(fd, args.maps, size);
free(args.maps);
return 0;
}
net_send_status(fd, CMD_ERROR);
return 1;
}
int proc_install_handle(int fd, struct cmd_packet *packet) {
struct cmd_proc_install_packet *ip;
struct sys_proc_install_args args;
struct cmd_proc_install_response resp;
ip = (struct cmd_proc_install_packet *)packet->data;
if (!ip) {
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
args.stubentryaddr = NULL;
sys_proc_cmd(ip->pid, SYS_PROC_INSTALL, &args);
if (!args.stubentryaddr) {
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
resp.rpcstub = args.stubentryaddr;
net_send_status(fd, CMD_SUCCESS);
net_send_data(fd, &resp, CMD_PROC_INSTALL_RESPONSE_SIZE);
return 0;
}
int proc_call_handle(int fd, struct cmd_packet *packet) {
struct cmd_proc_call_packet *cp;
struct sys_proc_call_args args;
struct cmd_proc_call_response resp;
cp = (struct cmd_proc_call_packet *)packet->data;
if (!cp) {
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
// copy over the arguments for the call
args.pid = cp->pid;
args.rpcstub = cp->rpcstub;
args.rax = NULL;
args.rip = cp->rpc_rip;
args.rdi = cp->rpc_rdi;
args.rsi = cp->rpc_rsi;
args.rdx = cp->rpc_rdx;
args.rcx = cp->rpc_rcx;
args.r8 = cp->rpc_r8;
args.r9 = cp->rpc_r9;
sys_proc_cmd(cp->pid, SYS_PROC_CALL, &args);
resp.pid = cp->pid;
resp.rpc_rax = args.rax;
net_send_status(fd, CMD_SUCCESS);
net_send_data(fd, &resp, CMD_PROC_CALL_RESPONSE_SIZE);
return 0;
}
int proc_elf_handle(int fd, struct cmd_packet *packet) {
struct cmd_proc_elf_packet *ep;
struct sys_proc_elf_args args;
void *elf;
ep = (struct cmd_proc_elf_packet *)packet->data;
if (ep) {
elf = pfmalloc(ep->length);
if (!elf) {
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
net_send_status(fd, CMD_SUCCESS);
net_recv_data(fd, elf, ep->length, 1);
args.elf = elf;
if (sys_proc_cmd(ep->pid, SYS_PROC_ELF, &args)) {
free(elf);
net_send_status(fd, CMD_ERROR);
return 1;
}
free(elf);
net_send_status(fd, CMD_SUCCESS);
return 0;
}
net_send_status(fd, CMD_ERROR);
return 1;
}
int proc_protect_handle(int fd, struct cmd_packet *packet) {
struct cmd_proc_protect_packet *pp;
struct sys_proc_protect_args args;
pp = (struct cmd_proc_protect_packet *)packet->data;
if (pp) {
args.address = pp->address;
args.length = pp->length;
args.prot = pp->newprot;
sys_proc_cmd(pp->pid, SYS_PROC_PROTECT, &args);
net_send_status(fd, CMD_SUCCESS);
}
net_send_status(fd, CMD_DATA_NULL);
return 0;
}
size_t GetSizeOfProcScanValue(enum cmd_proc_scan_valuetype valType) {
switch (valType) {
case valTypeUInt8:
case valTypeInt8:
return 1;
case valTypeUInt16:
case valTypeInt16:
return 2;
case valTypeUInt32:
case valTypeInt32:
case valTypeFloat:
return 4;
case valTypeUInt64:
case valTypeInt64:
case valTypeDouble:
return 8;
case valTypeArrBytes:
case valTypeString:
default:
return NULL;
}
}
int CompareProcScanValues(enum cmd_proc_scan_comparetype cmpType, enum cmd_proc_scan_valuetype valType, size_t valTypeLength, BYTE *pScanValue, BYTE *pMemoryValue, BYTE *pExtraValue) {
switch (cmpType) {
case cmpTypeExactValue: return compare_value_exact(pScanValue, pMemoryValue, valTypeLength);
case cmpTypeFuzzyValue: return compare_value_fuzzy(pScanValue, pMemoryValue, valTypeLength);
case cmpTypeBiggerThan: return compare_value_bigger_than(valType, pScanValue, pMemoryValue);
case cmpTypeSmallerThan: return compare_value_smaller_than(valType, pScanValue, pMemoryValue);
case cmpTypeValueBetween: return compare_value_between(valType, pScanValue, pMemoryValue, pExtraValue);
case cmpTypeIncreasedValue: return compare_value_increased(valType, pScanValue, pMemoryValue, pExtraValue);
case cmpTypeIncreasedValueBy: return compare_value_increased_by(valType, pScanValue, pMemoryValue, pExtraValue);
case cmpTypeDecreasedValue: return compare_value_decreased(valType, pScanValue, pMemoryValue, pExtraValue);
case cmpTypeDecreasedValueBy: return compare_value_decreasedy_by(valType, pScanValue, pMemoryValue, pExtraValue);
case cmpTypeChangedValue: return compare_value_changed(valType, pScanValue, pMemoryValue, pExtraValue);
case cmpTypeUnchangedValue: return compare_value_unchanged(valType, pScanValue, pMemoryValue, pExtraValue);
case cmpTypeUnknownInitialValue: return TRUE;
};
return FALSE;
}
// The Default maximum number of addresses 10000
#define MAX_ADDRESS_COUNT 10000
// Currently Experimental, POC for replicating ctn123's console scan feature
// NOTE: haven't tested this yet!
int proc_console_scan_handle(int fd, struct cmd_packet *packet) {
// Extracting data from the RPC packet
struct cmd_proc_scan_packet *sp = (struct cmd_proc_scan_packet *)packet->data;
// Check if the data pointer is valid
if (!sp) {
// Send status indicating null data
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
// Calculate the length of the value to be scanned
size_t valueLength = GetSizeOfProcScanValue(sp->valueType);
if (!valueLength) {
valueLength = sp->lenData;
}
// Allocate memory to store received data
unsigned char *data = (unsigned char *)pfmalloc(sp->lenData);
if (!data) {
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
// Notify successful data reception
net_send_status(fd, CMD_SUCCESS);
// Receive data from the network
net_recv_data(fd, data, sp->lenData, 1);
// Query for the process ID's memory map
struct sys_proc_vm_map_args args;
memset(&args, NULL, sizeof(struct sys_proc_vm_map_args));
if (sys_proc_cmd(sp->pid, SYS_PROC_VM_MAP, &args)) {
free(data);
net_send_status(fd, CMD_ERROR);
return 1;
}
// Calculate the size of the memory map
size_t size = args.num * sizeof(struct proc_vm_map_entry);
args.maps = (struct proc_vm_map_entry *)pfmalloc(size);
if (!args.maps) {
free(data);
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
// Retrieve the process memory map
if (sys_proc_cmd(sp->pid, SYS_PROC_VM_MAP, &args)) {
free(args.maps);
free(data);
net_send_status(fd, CMD_ERROR);
return 1;
}
// Notify successful memory map retrieval
net_send_status(fd, CMD_SUCCESS);
// Start the scanning process
uprintf("scan start");
// Initialize variables for scanning
unsigned char *pExtraValue = valueLength == sp->lenData ? NULL : &data[valueLength];
unsigned char *scanBuffer = (unsigned char *)pfmalloc(PAGE_SIZE);
// Allocate memory to hold <MAX_ADDRESS_COUNT> number of offsets
uint64_t *valid_addresses = (uint64_t *)pfmalloc(MAX_ADDRESS_COUNT * sizeof(uint64_t));
if (!valid_addresses) {
free(scanBuffer);
free(args.maps);
free(data);
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
// Counter used to increase the <valid_addresses> current array index
// everytime a valid address is found
size_t addressCount = 0;
// Loop through each memory section of the process
for (size_t i = 0; i < args.num; i++) {
// Skip sections that cannot be read
if ((args.maps[i].prot & PROT_READ) != PROT_READ)
continue;
// Calculate section start address and length
uint64_t sectionStartAddr = args.maps[i].start;
size_t sectionLen = args.maps[i].end - sectionStartAddr;
// Iterate through the memory section
for (uint64_t j = 0; j < sectionLen; j += valueLength) {
// If the current offset is at a page boundary, read the next page
if (j == 0 || !(j % PAGE_SIZE)) {
sys_proc_rw(
sp->pid,
sectionStartAddr,
scanBuffer,
PAGE_SIZE,
0
);
}
// Calculate the scan offset and current address
uint64_t scanOffset = j % PAGE_SIZE;
uint64_t curAddress = sectionStartAddr + j;
// Compare the scanned value with the requested value
if (CompareProcScanValues(
sp->compareType,
sp->valueType,
valueLength,
data,
scanBuffer + scanOffset,
pExtraValue)) {
// Check if the addressCount exceeds MAX_ADDRESS_COUNT, meaning the memory needs
// to be resized using pfrealloc
if (addressCount + 1 >= MAX_ADDRESS_COUNT || addressCount == MAX_ADDRESS_COUNT) {
size_t oldSize = MAX_ADDRESS_COUNT * sizeof(uint64_t);
size_t newSize = 2 * oldSize;
// Resize the valid_addresses array, and make sure to check if pfrealloc
// failed or not
uint64_t *new_valid_addresses = (uint64_t *)pfrealloc(valid_addresses, newSize, oldSize);
if (new_valid_addresses == NULL) {
free(scanBuffer);
free(args.maps);
free(data);
free(valid_addresses);
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
// Assign valid_addresses the resized memory
valid_addresses = new_valid_addresses;
}
// Append the new valid address to the buffer
valid_addresses[addressCount++] = curAddress;
}
}
}
// Now we enter a for-loop, so that we can send back each and every individual
// memory address that we saved to the <valid_addresses> array during the
// process scanning process, back to the PC
for (size_t i = 0; i < addressCount; i++) {
// Send the Offset back to the PC
net_send_data(
fd,
&valid_addresses[i],
sizeof(uint64_t)
);
}
// Notify the end of the scanning process
uprintf("scan done");
// Send an end flag to mark the end of data transmission
uint64_t endflag = 0xFFFFFFFFFFFFFFFF;
net_send_data(fd, &endflag, sizeof(uint64_t));
// Free allocated memory
free(scanBuffer);
free(valid_addresses);
free(args.maps);
free(data);
return 0;
}
int proc_scan_handle(int fd, struct cmd_packet *packet) {
// Extracting data from the RPC packet
struct cmd_proc_scan_packet *sp = (struct cmd_proc_scan_packet *)packet->data;
// Check if the data pointer is valid
if (!sp) {
// Send status indicating null data
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
// Calculate the length of the value to be scanned
size_t valueLength = GetSizeOfProcScanValue(sp->valueType);
if (!valueLength) {
valueLength = sp->lenData;
}
// Allocate memory to store received data
unsigned char *data = (unsigned char *)pfmalloc(sp->lenData);
if (!data) {
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
// Notify successful data reception
net_send_status(fd, CMD_SUCCESS);
// Receive data from the network
net_recv_data(fd, data, sp->lenData, 1);
// Query for the process ID's memory map
struct sys_proc_vm_map_args args;
memset(&args, NULL, sizeof(struct sys_proc_vm_map_args));
if (sys_proc_cmd(sp->pid, SYS_PROC_VM_MAP, &args)) {
free(data);
net_send_status(fd, CMD_ERROR);
return 1;
}
// Calculate the size of the memory map
size_t size = args.num * sizeof(struct proc_vm_map_entry);
args.maps = (struct proc_vm_map_entry *)pfmalloc(size);
if (!args.maps) {
free(data);
net_send_status(fd, CMD_DATA_NULL);
return 1;
}
// Retrieve the process memory map
if (sys_proc_cmd(sp->pid, SYS_PROC_VM_MAP, &args)) {
free(args.maps);
free(data);
net_send_status(fd, CMD_ERROR);
return 1;
}
// Notify successful memory map retrieval
net_send_status(fd, CMD_SUCCESS);
// Start the scanning process
uprintf("scan start");
// Initialize variables for scanning
unsigned char *pExtraValue = valueLength == sp->lenData ? NULL : &data[valueLength];
unsigned char *scanBuffer = (unsigned char *)pfmalloc(PAGE_SIZE);
// Loop through each memory section of the process
for (size_t i = 0; i < args.num; i++) {
// Skip sections that cannot be read
if ((args.maps[i].prot & PROT_READ) != PROT_READ) {
continue;
}
// Calculate section start address and length
uint64_t sectionStartAddr = args.maps[i].start;
size_t sectionLen = args.maps[i].end - sectionStartAddr;
// Iterate through the memory section
for (uint64_t j = 0; j < sectionLen; j += valueLength) {
// If the current offset is at a page boundary, read the next page
if (j == 0 || !(j % PAGE_SIZE)) {
sys_proc_rw(sp->pid, sectionStartAddr, scanBuffer, PAGE_SIZE, 0);
}
// Calculate the scan offset and current address
uint64_t scanOffset = j % PAGE_SIZE;
uint64_t curAddress = sectionStartAddr + j;
// Compare the scanned value with the requested value
if (CompareProcScanValues(
sp->compareType,
sp->valueType,
valueLength,
data,
scanBuffer + scanOffset,
pExtraValue)) {
// Send the address of a matching memory offset
net_send_data(fd, &curAddress, sizeof(uint64_t));
}
}
}
// Notify the end of the scanning process
uprintf("scan done");
// Send an end flag to mark the end of data transmission
uint64_t endflag = 0xFFFFFFFFFFFFFFFF;
net_send_data(fd, &endflag, sizeof(uint64_t));
// Free allocated memory
free(scanBuffer);
free(args.maps);
free(data);
return 0;
}
int proc_info_handle(int fd, struct cmd_packet *packet) {
struct cmd_proc_info_packet *ip;
struct sys_proc_info_args args;
struct cmd_proc_info_response resp;
ip = (struct cmd_proc_info_packet *)packet->data;
if (ip) {
sys_proc_cmd(ip->pid, SYS_PROC_INFO, &args);
resp.pid = args.pid;
memcpy(resp.name, args.name, sizeof(resp.name));
memcpy(resp.path, args.path, sizeof(resp.path));
memcpy(resp.titleid, args.titleid, sizeof(resp.titleid));
memcpy(resp.contentid, args.contentid, sizeof(resp.contentid));
net_send_status(fd, CMD_SUCCESS);
net_send_data(fd, &resp, CMD_PROC_INFO_RESPONSE_SIZE);
return 0;
}
net_send_status(fd, CMD_DATA_NULL);
return 0;
}
int proc_alloc_handle(int fd, struct cmd_packet *packet) {
struct cmd_proc_alloc_packet *ap;
struct sys_proc_alloc_args args;
struct cmd_proc_alloc_response resp;
ap = (struct cmd_proc_alloc_packet *)packet->data;
if (ap) {
args.length = ap->length;
sys_proc_cmd(ap->pid, SYS_PROC_ALLOC, &args);
resp.address = args.address;
net_send_status(fd, CMD_SUCCESS);
net_send_data(fd, &resp, CMD_PROC_ALLOC_RESPONSE_SIZE);
return 0;
}
net_send_status(fd, CMD_DATA_NULL);
return 0;
}
int proc_free_handle(int fd, struct cmd_packet *packet) {
struct cmd_proc_free_packet *fp;
struct sys_proc_free_args args;
fp = (struct cmd_proc_free_packet *)packet->data;
if (fp) {
args.address = fp->address;
args.length = fp->length;
sys_proc_cmd(fp->pid, SYS_PROC_FREE, &args);
net_send_status(fd, CMD_SUCCESS);
return 0;
}
net_send_status(fd, CMD_DATA_NULL);
return 0;
}
int proc_handle(int fd, struct cmd_packet *packet) {
switch (packet->cmd) {
case CMD_PROC_LIST:
return proc_list_handle(fd, packet);
case CMD_PROC_READ:
return proc_read_handle(fd, packet);
case CMD_PROC_WRITE:
return proc_write_handle(fd, packet);
case CMD_PROC_MAPS:
return proc_maps_handle(fd, packet);
case CMD_PROC_INTALL:
return proc_install_handle(fd, packet);
case CMD_PROC_CALL:
return proc_call_handle(fd, packet);
case CMD_PROC_ELF:
return proc_elf_handle(fd, packet);
case CMD_PROC_PROTECT:
return proc_protect_handle(fd, packet);
case CMD_PROC_SCAN:
return proc_scan_handle(fd, packet);
case CMD_PROC_INFO:
return proc_info_handle(fd, packet);
case CMD_PROC_ALLOC:
return proc_alloc_handle(fd, packet);
case CMD_PROC_FREE:
return proc_free_handle(fd, packet);
}
return 1;
}