dandri/proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2026-08-28 05:14:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

feat(mfu): add hf mfu esetblk to set emulator memory pages

Browse Source
This commit is contained in:
michael
2026-07-02 14:14:40 -07:00
parent 86a0f994e5
commit 48e7ae056b
1 changed files with 59 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
client/src/cmdhfmfu.c
+59
View File
@@ -24,6 +24,7 @@
#include "aes.h"
#include "cmdhfmf.h"
#include "cmdhf14a.h"
#include "mifare/mifarehost.h" // mf_eml_set_mem_xt
#include "comms.h"
#include "protocols.h"
#include "generator.h"
@@ -8053,6 +8054,63 @@ static int CmdHF14AMfUIncr(const char *Cmd) {
return PM3_SUCCESS;
}
static int CmdHF14AMfUeSetBlk(const char *Cmd) {
CLIParserContext *ctx;
CLIParserInit(&ctx, "hf mfu esetblk",
"Set emulator memory page(s). One page = 4 bytes; pass multiple\n"
"whole pages of data to set consecutive pages from --blk.",
"hf mfu esetblk --blk 4 -d 04E10CDA\n"
"hf mfu esetblk --blk 4 -d 04E10CDA993C8048 -> sets pages 4-5\n"
);
void *argtable[] = {
arg_param_begin,
arg_int1("b", "blk", "<dec>", "page number to start at"),
arg_str0("d", "data", "<hex>", "bytes to write, whole pages (multiple of 4 bytes)"),
arg_param_end
};
CLIExecWithReturn(ctx, Cmd, argtable, false);
int blk = arg_get_int_def(ctx, 1, 0);
uint8_t data[MFU_MAX_BYTES] = {0x00};
int datalen = 0;
int res = CLIParamHexToBuf(arg_get_str(ctx, 2), data, sizeof(data), &datalen);
CLIParserFree(ctx);
if (res) {
PrintAndLogEx(FAILED, "Error parsing bytes");
return PM3_EINVARG;
}
if (blk < 0) {
PrintAndLogEx(WARNING, "page number must be positive");
return PM3_EINVARG;
}
if (datalen == 0 || (datalen % MFU_BLOCK_SIZE) != 0) {
PrintAndLogEx(WARNING, "data must be whole pages (multiples of %d bytes). Got %i", MFU_BLOCK_SIZE, datalen);
return PM3_EINVARG;
}
int count = datalen / MFU_BLOCK_SIZE;
// live MFU emulator data region is MFU_MAX_BYTES (pages 0..254); page 255 is not round-trippable
if ((blk + count) * MFU_BLOCK_SIZE > MFU_MAX_BYTES) {
PrintAndLogEx(WARNING, "page range exceeds emulator memory (max page %u)", (MFU_MAX_BYTES / MFU_BLOCK_SIZE) - 1);
return PM3_EINVARG;
}
// MFU emulator page data starts after the 56-byte mfu_dump_t prefix, so shift the
// page index by MFU_DUMP_PREFIX_LENGTH/MFU_BLOCK_SIZE (=14), width = MFU_BLOCK_SIZE (4).
res = mf_eml_set_mem_xt(data, blk + (MFU_DUMP_PREFIX_LENGTH / MFU_BLOCK_SIZE), count, MFU_BLOCK_SIZE);
if (res != PM3_SUCCESS) {
PrintAndLogEx(FAILED, "Failed to set emulator memory");
return res;
}
PrintAndLogEx(SUCCESS, "Set " _YELLOW_("%d") " page(s) from page " _YELLOW_("%d"), count, blk);
return PM3_SUCCESS;
}
static command_t CommandTable[] = {
{"help", CmdHelp, AlwaysAvailable, "This help"},
{"list", CmdHF14AMfuList, AlwaysAvailable, "List MIFARE Ultralight / NTAG history"},
@@ -8082,6 +8140,7 @@ static command_t CommandTable[] = {
{"eload", CmdHF14AMfUeLoad, IfPm3Iso14443a, "Upload file into emulator memory"},
{"esave", CmdHF14AMfuESave, IfPm3Iso14443a, "Save emulator memory to file"},
{"eview", CmdHF14AMfuEView, IfPm3Iso14443a, "View emulator memory"},
{"esetblk", CmdHF14AMfUeSetBlk, IfPm3Iso14443a, "Set emulator memory block"},
{"sim", CmdHF14AMfUSim, IfPm3Iso14443a, "Simulate MIFARE Ultralight from emulator memory"},
{"-----------", CmdHelp, IfPm3Iso14443a, "----------------------- " _CYAN_("magic") " ----------------------------"},
{"setuid", CmdHF14AMfUCSetUid, IfPm3Iso14443a, "Set UID - MAGIC tags only"},