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No more rand()

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Aaron Tulino (Aaronjamt)
2025-12-22 15:21:47 -07:00
parent 17dfd50907
commit f1e6e49484
1 changed files with 12 additions and 5 deletions
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client/src/cmdhfseos.c
+12 -5
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@@ -1698,8 +1698,9 @@ static int CmdHfSeosSim(const char *Cmd) {
arg_str0("t", "tag", "<hex>", "<0-100> hex bytes for tag to simulate (Default: FF00)"),
arg_str0("o", "oid", "<hex>", "<0-100> hex bytes for OID (Default: 2B0601040181E438010102011801010202)"),
arg_int0(NULL, "ki", "<dec>", "Specify key index to set key in memory"),
arg_str0("u", "diversifier", "<hex>", "<0-16> hex bytes for diversifier (Equivalent of UID)"),
arg_str0(NULL, "div", "<hex>", "<0-16> hex bytes for diversifier (Equivalent of UID)"),
arg_str0("d", "data", "<hex>", "<0-128> hex bytes for data (Must be valid BER-TLV)"),
arg_str0("u", "uid", "<hex>", "<0-10> hex bytes for UID (Must be a RID i.e. [0]=0x08)"),
arg_lit0("l", "legacy", "Use legacy algorithms (3DES/SHA1)"),
arg_param_end
};
@@ -1723,9 +1724,13 @@ static int CmdHfSeosSim(const char *Cmd) {
uint8_t data[256] = {};
CLIGetHexWithReturn(ctx, 5, data, &data_len);
int uid_len = 0;
uint8_t uid[10] = {0x08, 0x01, 0x02, 0x03};
CLIGetHexWithReturn(ctx, 6, uid, &uid_len);
uint8_t encryption_algorithm = SEOS_ENCRYPTION_AES;
uint8_t hashing_algorithm = SEOS_HASHING_SHA256;
if (arg_get_lit(ctx, 6)) { // legacy algorithms
if (arg_get_lit(ctx, 7)) { // legacy algorithms
encryption_algorithm = SEOS_ENCRYPTION_2K3DES,
hashing_algorithm = SEOS_HASHING_SHA1;
}
@@ -1742,19 +1747,20 @@ static int CmdHfSeosSim(const char *Cmd) {
if (diversifier_len == 0) {
diversifier_len = 7;
}
if (uid_len == 0) {
uid_len = 4;
}
if (data_len == 0) {
PrintAndLogEx(ERR, "Data to simulate must be supplied");
return PM3_ESOFT;
}
srand(time(NULL));
seos_emulate_req_t request = {
.encr_alg = encryption_algorithm,
.hash_alg = hashing_algorithm,
.uid = {0x08, rand()%255, rand()%255, rand()%255},
.uid_len = 4,
.uid_len = uid_len,
.diversifier_len = diversifier_len,
.data_tag_len = data_tag_len,
.data_len = data_len,
@@ -1766,6 +1772,7 @@ static int CmdHfSeosSim(const char *Cmd) {
memcpy(request.privmac, keys[key_index].privMacKey, 16);
memcpy(request.authkey, keys[key_index].readKey, 16);
memcpy(request.uid, uid, uid_len);
memcpy(request.diversifier, diversifier, diversifier_len);
memcpy(request.data_tag, data_tag, data_tag_len);
memcpy(request.data, data, data_len);