diff --git a/scripts/gen_bytecode.lua b/scripts/gen_bytecode.lua
new file mode 100644
index 000000000..e135f5349
--- /dev/null
+++ b/scripts/gen_bytecode.lua
@@ -0,0 +1,72 @@
+function gen_bytecode()
+    pay_contract = function(param)
+        from, to, value, sequence, sig = string.unpack("c32 c32 I8 I8 c64", param)
+
+        function get_account_key(name)
+            account_prefix = "account_"
+            account_key = account_prefix .. name
+            return account_key
+        end
+
+        function get_account(name)
+            account_key = get_account_key(name)
+            account_data = coroutine.yield(account_key)
+            if string.len(account_data) > 0 then
+                account_balance, account_sequence
+                = string.unpack("I8 I8", account_data)
+                return account_balance, account_sequence
+            end
+            return 0, 0
+        end
+
+        function pack_account(updates, name, balance, seq)
+            updates[get_account_key(name)] = string.pack("I8 I8", balance, seq)
+        end
+
+        function update_accounts(from_acc, from_bal, from_seq, to_acc, to_bal, to_seq)
+            ret = {}
+            pack_account(ret, from_acc, from_bal, from_seq)
+            if to_acc ~= nil then
+                pack_account(ret, to_acc, to_bal, to_seq)
+            end
+            return ret
+        end
+
+        function sig_payload(to_acc, value, seq)
+            return string.pack("c32 I8 I8", to_acc, value, seq)
+        end
+
+        from_balance, from_seq = get_account(from)
+        payload = sig_payload(to, value, sequence)
+        check_sig(from, sig, payload)
+        if sequence < from_seq then
+            error("sequence number too low")
+        end
+
+        if value > from_balance then
+            error("insufficient balance")
+        end
+
+        if value > 0 then
+            to_balance, to_seq = get_account(to)
+            to_balance = to_balance + value
+            from_balance = from_balance - value
+        else
+            to = nil
+        end
+
+        from_seq = sequence + 1
+        return update_accounts(from, from_balance, from_seq, to, to_balance, to_seq)
+    end
+    c = string.dump(pay_contract, true)
+    tot = ""
+    for i = 1, string.len(c) do
+        hex = string.format("%x", string.byte(c, i))
+        if string.len(hex) < 2 then
+            hex = "0" .. hex
+        end
+        tot = tot .. hex
+    end
+
+    return tot
+end
diff --git a/tests/unit/3pc/agent/runners/lua/account_test.cpp b/tests/unit/3pc/agent/runners/lua/account_test.cpp
index b11c8edd4..ff5acb781 100644
--- a/tests/unit/3pc/agent/runners/lua/account_test.cpp
+++ b/tests/unit/3pc/agent/runners/lua/account_test.cpp
@@ -16,6 +16,7 @@
 #include "util/serialization/format.hpp"
 
 #include <gtest/gtest.h>
+#include <lua.hpp>
 #include <secp256k1.h>
 #include <secp256k1_schnorrsig.h>
 #include <thread>
@@ -24,53 +25,16 @@ class account_test : public ::testing::Test {
   protected:
     void SetUp() override {
         m_pay_contract_key.append("pay", 3);
-        m_pay_contract
-            = cbdc::buffer::from_hex(
-                  "1b4c7561540019930d0a1a0a04080878560000000000000000000000287"
-                  "74001808ac4010008d48b0000058e0001060381030080010000c4000306"
-                  "0f0004050f0003040f0002030f0001020f000001cf0000000f000801cf8"
-                  "000000f000901cf0001000f000a01cf8001000f000b01cf0002000f000c"
-                  "018b0000090b010000c40002030f000e020f000d018b00000c0b0100018"
-                  "b0100020b020003c40004020f000f018b0000100b0100008b0100040b02"
-                  "000fc40004018b0000030b01000eba000200380100808b0000110301090"
-                  "0c40002018b0000020b01000d3a010100380100808b00001103810900c4"
-                  "0002018b000002c0007f00b80700808b0000090b010001c40002030f001"
-                  "5020f0014018b0000140b010002a2000102ae0002060f0014018b00000d"
-                  "0b010002a3000102ae0002070f000d01380000800f8001168b000003950"
-                  "00180af0080060f000e018b00000b0b0100008b01000d0b02000e8b0200"
-                  "010b0300148b030015c5000700c6000000c700010097048566726f6d048"
-                  "3746f048676616c7565048973657175656e636504847369670487737472"
-                  "696e670487756e7061636b0492633332206333322049382049382063363"
-                  "404906765745f6163636f756e745f6b6579048c6765745f6163636f756e"
-                  "74048d7061636b5f6163636f756e7404907570646174655f6163636f756"
-                  "e7473048c7369675f7061796c6f6164048d66726f6d5f62616c616e6365"
-                  "048966726f6d5f73657104887061796c6f6164048a636865636b5f73696"
-                  "704866572726f72049873657175656e6365206e756d62657220746f6f20"
-                  "6c6f770495696e73756666696369656e742062616c616e6365048b746f5"
-                  "f62616c616e63650487746f5f736571008100000085808d91010003880f"
-                  "8000018b00000000010000b50002000f0002018b000002c8000200c7000"
-                  "10083048f6163636f756e745f70726566697804896163636f756e745f04"
-                  "8c6163636f756e745f6b657981000000808080808080939c0100049d8b0"
-                  "0000100010000c40002020f0000018b0000038e0001040b010000c40002"
-                  "020f0002018b0000058e0001060b010002c4000202c0007f00b80400808"
-                  "b0000058e000109030105008b010002c40003030f0008020f0007018b00"
-                  "00070b010008c60003008180ff7f0181ff7fc6000300c70001008b048c6"
-                  "163636f756e745f6b657904906765745f6163636f756e745f6b6579048d"
-                  "6163636f756e745f64617461048a636f726f7574696e6504867969656c6"
-                  "40487737472696e6704846c656e04906163636f756e745f62616c616e63"
-                  "6504916163636f756e745f73657175656e63650487756e7061636b04864"
-                  "938204938810000008080808080809ea00400098b0b0200008002010044"
-                  "0202028b0200018e020502038301008003020000040300c402040210000"
-                  "405470201008404906765745f6163636f756e745f6b6579048773747269"
-                  "6e6704857061636b0486493820493881000000808080808080a2a906000"
-                  "b9413030000520000000f0000060b0300018b0300000004000080040100"
-                  "0005020044030501bc810200b80200800b0300018b03000000040300800"
-                  "4040000050500440305010b030000480302004703010083048472657404"
-                  "8d7061636b5f6163636f756e740081000000808080808080abad0300088"
-                  "98b0100008e01030103020100800200000003010080030200c5010500c6"
-                  "010000c7010100830487737472696e6704857061636b048a63333220493"
-                  "820493881000000808080808080808080")
-                  .value();
+
+        lua_State* L = luaL_newstate();
+        luaL_openlibs(L);
+        luaL_dofile(
+            L,
+            "../tests/unit/3pc/agent/runners/lua/gen_pay_contract.lua");
+        lua_getglobal(L, "gen_bytecode");
+        ASSERT_EQ(lua_pcall(L, 0, 1, 0), 0);
+        m_pay_contract = cbdc::buffer::from_hex(lua_tostring(L, -1)).value();
+
         cbdc::test::add_to_shard(m_broker, m_pay_contract_key, m_pay_contract);
 
         m_init_account_key.append("account_", 8);
diff --git a/tests/unit/3pc/agent/runners/lua/gen_pay_contract.lua b/tests/unit/3pc/agent/runners/lua/gen_pay_contract.lua
new file mode 100644
index 000000000..e135f5349
--- /dev/null
+++ b/tests/unit/3pc/agent/runners/lua/gen_pay_contract.lua
@@ -0,0 +1,72 @@
+function gen_bytecode()
+    pay_contract = function(param)
+        from, to, value, sequence, sig = string.unpack("c32 c32 I8 I8 c64", param)
+
+        function get_account_key(name)
+            account_prefix = "account_"
+            account_key = account_prefix .. name
+            return account_key
+        end
+
+        function get_account(name)
+            account_key = get_account_key(name)
+            account_data = coroutine.yield(account_key)
+            if string.len(account_data) > 0 then
+                account_balance, account_sequence
+                = string.unpack("I8 I8", account_data)
+                return account_balance, account_sequence
+            end
+            return 0, 0
+        end
+
+        function pack_account(updates, name, balance, seq)
+            updates[get_account_key(name)] = string.pack("I8 I8", balance, seq)
+        end
+
+        function update_accounts(from_acc, from_bal, from_seq, to_acc, to_bal, to_seq)
+            ret = {}
+            pack_account(ret, from_acc, from_bal, from_seq)
+            if to_acc ~= nil then
+                pack_account(ret, to_acc, to_bal, to_seq)
+            end
+            return ret
+        end
+
+        function sig_payload(to_acc, value, seq)
+            return string.pack("c32 I8 I8", to_acc, value, seq)
+        end
+
+        from_balance, from_seq = get_account(from)
+        payload = sig_payload(to, value, sequence)
+        check_sig(from, sig, payload)
+        if sequence < from_seq then
+            error("sequence number too low")
+        end
+
+        if value > from_balance then
+            error("insufficient balance")
+        end
+
+        if value > 0 then
+            to_balance, to_seq = get_account(to)
+            to_balance = to_balance + value
+            from_balance = from_balance - value
+        else
+            to = nil
+        end
+
+        from_seq = sequence + 1
+        return update_accounts(from, from_balance, from_seq, to, to_balance, to_seq)
+    end
+    c = string.dump(pay_contract, true)
+    tot = ""
+    for i = 1, string.len(c) do
+        hex = string.format("%x", string.byte(c, i))
+        if string.len(hex) < 2 then
+            hex = "0" .. hex
+        end
+        tot = tot .. hex
+    end
+
+    return tot
+end
diff --git a/tools/bench/3pc/lua/gen_bytecode.lua b/tools/bench/3pc/lua/gen_bytecode.lua
deleted file mode 100644
index d1f70b2f2..000000000
--- a/tools/bench/3pc/lua/gen_bytecode.lua
+++ /dev/null
@@ -1,71 +0,0 @@
-f = function (param)
-    from, to, value, sequence, sig = string.unpack("c32 c32 I8 I8 c64", param)
-
-    function get_account_key(name)
-        account_prefix = "account_"
-        account_key = account_prefix .. name
-        return account_key
-    end
-
-    function get_account(name)
-        account_key = get_account_key(name)
-        account_data = coroutine.yield(account_key)
-        if string.len(account_data) > 0 then
-            account_balance, account_sequence
-                = string.unpack("I8 I8", account_data)
-            return account_balance, account_sequence
-        end
-        return 0, 0
-    end
-
-    function pack_account(updates, name, balance, seq)
-        updates[get_account_key(name)] = string.pack("I8 I8", balance, seq)
-    end
-
-    function update_accounts(from_acc, from_bal, from_seq, to_acc, to_bal, to_seq)
-        ret = {}
-        pack_account(ret, from_acc, from_bal, from_seq)
-        if to_acc ~= nil then
-            pack_account(ret, to_acc, to_bal, to_seq)
-        end
-        return ret
-    end
-
-    function sig_payload(to_acc, value, seq)
-        return string.pack("c32 I8 I8", to_acc, value, seq)
-    end
-
-    from_balance, from_seq = get_account(from)
-    payload = sig_payload(to, value, sequence)
-    check_sig(from, sig, payload)
-    if sequence < from_seq then
-        error("sequence number too low")
-    end
-
-    if value > from_balance then
-        error("insufficient balance")
-    end
-
-    if value > 0 then
-        to_balance, to_seq = get_account(to)
-        to_balance = to_balance + value
-        from_balance = from_balance - value
-    else
-        to = nil
-    end
-
-    from_seq = sequence + 1
-    return update_accounts(from, from_balance, from_seq, to, to_balance, to_seq)
-end
-
-c = string.dump(f, true)
-tot = ""
-for i = 1, string.len(c) do
-    hex = string.format("%x", string.byte(c, i))
-    if string.len(hex) < 2 then
-        hex = "0" .. hex
-    end
-    tot = tot .. hex
-end
-
-print(tot)
diff --git a/tools/bench/3pc/lua/lua_bench.cpp b/tools/bench/3pc/lua/lua_bench.cpp
index 7f877c198..8ccecca00 100644
--- a/tools/bench/3pc/lua/lua_bench.cpp
+++ b/tools/bench/3pc/lua/lua_bench.cpp
@@ -12,6 +12,7 @@
 #include "crypto/sha256.h"
 #include "wallet.hpp"
 
+#include <lua.hpp>
 #include <random>
 #include <thread>
 
@@ -26,7 +27,7 @@ auto main(int argc, char** argv) -> int {
         log->error("Not enough arguments");
         return 1;
     }
-    auto cfg = cbdc::threepc::read_config(argc - 1, argv);
+    auto cfg = cbdc::threepc::read_config(argc - 2, argv);
     if(!cfg.has_value()) {
         log->error("Error parsing options");
         return 1;
@@ -74,51 +75,18 @@ auto main(int argc, char** argv) -> int {
         directory,
         log);
 
+    auto contract_file = args[args.size() - 2];
     auto pay_contract = cbdc::buffer();
-    pay_contract
-        = cbdc::buffer::from_hex(
-              "1b4c7561540019930d0a1a0a040808785600000000000000000000002877400"
-              "1808ac4010008d48b0000058e0001060381030080010000c40003060f000405"
-              "0f0003040f0002030f0001020f000001cf0000000f000801cf8000000f00090"
-              "1cf0001000f000a01cf8001000f000b01cf0002000f000c018b0000090b0100"
-              "00c40002030f000e020f000d018b00000c0b0100018b0100020b020003c4000"
-              "4020f000f018b0000100b0100008b0100040b02000fc40004018b0000030b01"
-              "000eba000200380100808b00001103010900c40002018b0000020b01000d3a0"
-              "10100380100808b00001103810900c40002018b000002c0007f00b80700808b"
-              "0000090b010001c40002030f0015020f0014018b0000140b010002a2000102a"
-              "e0002060f0014018b00000d0b010002a3000102ae0002070f000d0138000080"
-              "0f8001168b00000395000180af0080060f000e018b00000b0b0100008b01000"
-              "d0b02000e8b0200010b0300148b030015c5000700c6000000c7000100970485"
-              "66726f6d0483746f048676616c7565048973657175656e63650484736967048"
-              "7737472696e670487756e7061636b0492633332206333322049382049382063"
-              "363404906765745f6163636f756e745f6b6579048c6765745f6163636f756e7"
-              "4048d7061636b5f6163636f756e7404907570646174655f6163636f756e7473"
-              "048c7369675f7061796c6f6164048d66726f6d5f62616c616e6365048966726"
-              "f6d5f73657104887061796c6f6164048a636865636b5f73696704866572726f"
-              "72049873657175656e6365206e756d62657220746f6f206c6f770495696e737"
-              "56666696369656e742062616c616e6365048b746f5f62616c616e6365048774"
-              "6f5f736571008100000085808d91010003880f8000018b00000000010000b50"
-              "002000f0002018b000002c8000200c700010083048f6163636f756e745f7072"
-              "6566697804896163636f756e745f048c6163636f756e745f6b6579810000008"
-              "08080808080939c0100049d8b00000100010000c40002020f0000018b000003"
-              "8e0001040b010000c40002020f0002018b0000058e0001060b010002c400020"
-              "2c0007f00b80400808b0000058e000109030105008b010002c40003030f0008"
-              "020f0007018b0000070b010008c60003008180ff7f0181ff7fc6000300c7000"
-              "1008b048c6163636f756e745f6b657904906765745f6163636f756e745f6b65"
-              "79048d6163636f756e745f64617461048a636f726f7574696e6504867969656"
-              "c640487737472696e6704846c656e04906163636f756e745f62616c616e6365"
-              "04916163636f756e745f73657175656e63650487756e7061636b04864938204"
-              "938810000008080808080809ea00400098b0b02000080020100440202028b02"
-              "00018e020502038301008003020000040300c40204021000040547020100840"
-              "4906765745f6163636f756e745f6b65790487737472696e6704857061636b04"
-              "86493820493881000000808080808080a2a906000b9413030000520000000f0"
-              "000060b0300018b03000000040000800401000005020044030501bc810200b8"
-              "0200800b0300018b030000000403008004040000050500440305010b0300004"
-              "803020047030100830484726574048d7061636b5f6163636f756e7400810000"
-              "00808080808080abad030008898b0100008e010301030201008002000000030"
-              "10080030200c5010500c6010000c7010100830487737472696e670485706163"
-              "6b048a63333220493820493881000000808080808080808080")
-              .value();
+    lua_State* L = luaL_newstate();
+    luaL_openlibs(L);
+    luaL_dofile(L, contract_file.c_str());
+    lua_getglobal(L, "gen_bytecode");
+    if(lua_pcall(L, 0, 1, 0) != 0) {
+        log->error("Contract bytecode generation failed, with error:",
+                   lua_tostring(L, -1));
+        return 1;
+    }
+    pay_contract = cbdc::buffer::from_hex(lua_tostring(L, -1)).value();
 
     auto pay_keys = std::vector<cbdc::buffer>();
     auto init_count = std::atomic<size_t>();