[hf seos] Simulate support

armsrc/Makefile

@@ -45,6 +45,7 @@ SRC_FELICA = felica.c
 SRC_CRAPTO1 = crypto1.c des.c desfire_crypto.c mifaredesfire.c aes.c platform_util.c
 SRC_CRC = crc.c crc16.c crc32.c
 SRC_ICLASS = iclass.c optimized_cipherutils.c optimized_ikeys.c optimized_elite.c optimized_cipher.c sam_picopass.c
+SRC_SEOS = seos.c sha1.c sha256.c
 SRC_LEGIC = legicrf.c legicrfsim.c legic_prng.c
 SRC_NFCBARCODE = thinfilm.c
 
@@ -137,6 +138,7 @@ THUMBSRC = start.c \
     $(SRC_ISO14443b) \
     $(SRC_CRAPTO1) \
     $(SRC_ICLASS) \
+    $(SRC_SEOS) \
     $(SRC_EMV) \
     $(SRC_CRC) \
     $(SRC_FELICA) \

armsrc/appmain.c

@@ -45,6 +45,7 @@
 #include "em4x50.h"
 #include "em4x70.h"
 #include "iclass.h"
+#include "seos.h"
 #include "legicrfsim.h"
 //#include "cryptorfsim.h"
 #include "epa.h"
@@ -630,6 +631,11 @@ static void SendCapabilities(void) {
 #else
     capabilities.compiled_with_iclass = false;
 #endif
+#ifdef WITH_SEOS
+    capabilities.compiled_with_seos = true;
+#else
+    capabilities.compiled_with_seos = false;
+#endif
 #ifdef WITH_NFCBARCODE
     capabilities.compiled_with_nfcbarcode = true;
 #else
@@ -2281,6 +2287,12 @@ static void PacketReceived(PacketCommandNG *packet) {
             break;
         }
 #endif
+#ifdef WITH_SEOS
+        case CMD_HF_SEOS_SIMULATE: {
+            SimulateSeos((seos_emulate_req_t *)packet->data.asBytes);
+            break;
+        }
+#endif
 
 #ifdef WITH_HFSNIFF
         case CMD_HF_SNIFF: {

armsrc/seos.h

@@ -0,0 +1,25 @@
+//-----------------------------------------------------------------------------
+// Copyright (C) Aaron Tulino - December 2025
+// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// See LICENSE.txt for the text of the license.
+//-----------------------------------------------------------------------------
+#ifndef __SEOS_H
+#define __SEOS_H
+
+#include "common.h"
+#include "seos_cmd.h"
+
+void SimulateSeos(seos_emulate_req_t *msg);
+
+#endif

common_arm/Makefile.hal

@@ -232,6 +232,9 @@ endif
 ifneq ($(SKIP_ICLASS),1)
     PLATFORM_DEFS += -DWITH_ICLASS
 endif
+ifneq ($(SKIP_SEOS),1)
+    PLATFORM_DEFS += -DWITH_SEOS
+endif
 ifneq ($(SKIP_FELICA),1)
     PLATFORM_DEFS += -DWITH_FELICA
 endif

include/pm3_cmd.h

@@ -238,6 +238,7 @@ typedef struct {
     bool compiled_with_felica          : 1;
     bool compiled_with_legicrf         : 1;
     bool compiled_with_iclass          : 1;
+    bool compiled_with_seos            : 1;
     bool compiled_with_nfcbarcode      : 1;
     // misc
     bool compiled_with_lcd             : 1;
@@ -247,7 +248,7 @@ typedef struct {
     bool hw_available_smartcard        : 1;
     bool is_rdv4                       : 1;
 } PACKED capabilities_t;
-#define CAPABILITIES_VERSION 6
+#define CAPABILITIES_VERSION 7
 extern capabilities_t g_pm3_capabilities;
 
 // For CMD_LF_T55XX_WRITEBL
@@ -857,6 +858,8 @@ typedef struct {
 #define CMD_HF_SAM_SEOS                                                   0x0901
 #define CMD_HF_SAM_MFC                                                    0x0902
 
+#define CMD_HF_SEOS_SIMULATE                                              0x0903
+
 #define CMD_UNKNOWN                                                       0xFFFF
 
 //Mifare simulation flags

include/seos_cmd.h

@@ -0,0 +1,56 @@
+//-----------------------------------------------------------------------------
+// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// See LICENSE.txt for the text of the license.
+//-----------------------------------------------------------------------------
+// Seos type prototyping
+//-----------------------------------------------------------------------------
+
+#ifndef _SEOS_CMD_H_
+#define _SEOS_CMD_H_
+
+#include "common.h"
+
+#define SEOS_ENCRYPTION_2K3DES      0x02
+#define SEOS_ENCRYPTION_3K3DES      0x03
+#define SEOS_ENCRYPTION_AES         0x09
+
+#define SEOS_HASHING_SHA1           0x06
+#define SEOS_HASHING_SHA256         0x07
+
+// Seos emulate request data structure
+typedef struct {
+    uint8_t encr_alg;
+    uint8_t hash_alg;
+
+    uint8_t uid[10];
+    uint8_t uid_len;
+
+    uint8_t privenc[16];
+    uint8_t privmac[16];
+    uint8_t authkey[16];
+
+    uint8_t diversifier_len;
+    uint8_t diversifier[16];
+    
+    uint8_t data_tag_len;
+    uint8_t data_tag[8];
+    
+    uint8_t data_len;
+    uint8_t data[128];
+    
+    uint8_t oid_len;
+    uint8_t oid[32];
+} PACKED seos_emulate_req_t;
+
+#endif // _SEOS_H_