The problem

What can be found in application binaries?

Why should I care?

The solution — String Encrypt

String Encrypt comes with:

WebApi usage

"encrypt" command usage example

<?php//////////////////////////////////////////////////////////////////////////////////// StringEncrypt.com Web API usage example//// Version        : v1.3// Language       : PHP// Author         : Bartosz Wójcik// Web page       : https://www.stringencrypt.com//////////////////////////////////////////////////////////////////////////////////// include main libraryinclude ("stringencrypt.php");//// setup options//$options =array();//// activation code, you can leave it empty for demo version, but keep in// mind that there are many limitations in demo version)//$options["code"] ="";//// API command to execute//// "encrypt" - encrypt input string or file bytes, returns array of://// $result["error"] - error code// $result["source"] - decryptor source code// $result["expired"] - activation code expiration flag (bool)// $result["credits_left"] - number of credits left//// "is_demo" - checks current activation code and returns array of://// $result["demo"] - demo mode flag (bool)// $result["label_limit"] - label limit length// $result["string_limit"] - string/file limit lenght// $result["credits_left"] - number of credits left// $result["cmd_min"] - minimum number of encryption commands// $result["cmd_max"] - maximum number of encryption commands$options["command"] ="encrypt";//$options["command"] = "is_demo";//// label name//// demo mode supports up to 6 chars only (64 in full version),// if you pass more than this number, service will return// ERROR_LENGTH_LABEL//$options["label"] ="Label";//// input string / raw bytes compression enabled, if you set it to// true, you need to compress input string / raw bytes eg.//// $compressed = @base64_encode(@gzcompress($string, 9)//// and after encryption you need to decompress encrypted data//// $decompressed = @gzuncompress(@base64_decode($source));//$options["compression"] =false;//$options["compression"] = true;//// input string in UTF-8 format//// demo mode supports up to 6 chars only, if you pass more// than that, service will return ERROR_LENGTH_STRING//$options["string"] ="Hello!";//$options["string"] = @base64_encode(@gzcompress("Hello!", 9));//// raw data bytes to encrypt (you need to specify either// $options["string"] or this value//// demo mode doesn't support this parameter and the service// will return ERROR_DEMO////$options["bytes"] = file_get_contents("my_file.txt");//$options["bytes"] = file_get_contents("http://www.example.com/my_file.txt");//$options["bytes"] = @base64_encode(@gzcompress(file_get_contents("my_file.txt"), 9));//// treat input string as a UNICODE string (ANSI otherwise)//$options["unicode"] =true;//// input string default locale (only those listed below// are supported currently)//$options["lang_locale"] ="en_US.utf8";//$options["lang_locale"] = "en_GB.utf8";//$options["lang_locale"] = "de_DE.utf8";//$options["lang_locale"] = "es_ES.utf8";//$options["lang_locale"] = "fr_BE.utf8";//$options["lang_locale"] = "fr_FR.utf8";//$options["lang_locale"] = "pl_PL.utf8";//// how to encode new lines, available values://// "lf" - Unix style// "crlf" - Windows style// "cr" - Mac style//$options["new_lines"] ="lf";//$options["new_lines"] = "crlf";//$options["new_lines"] = "cr";//// destination ANSI string encoding (if unicode = false)//// only those listed below are supported//$options["ansi_encoding"] ="WINDOWS-1250";//$options["ansi_encoding"] = "WINDOWS-1251";//$options["ansi_encoding"] = "WINDOWS-1252";//$options["ansi_encoding"] = "WINDOWS-1253";//$options["ansi_encoding"] = "WINDOWS-1254";//$options["ansi_encoding"] = "WINDOWS-1255";//$options["ansi_encoding"] = "WINDOWS-1256";//$options["ansi_encoding"] = "WINDOWS-1257";//$options["ansi_encoding"] = "WINDOWS-1258";//$options["ansi_encoding"] = "ISO-8859-1";//$options["ansi_encoding"] = "ISO-8859-2";//$options["ansi_encoding"] = "ISO-8859-3";//$options["ansi_encoding"] = "ISO-8859-9";//$options["ansi_encoding"] = "ISO-8859-10";//$options["ansi_encoding"] = "ISO-8859-14";//$options["ansi_encoding"] = "ISO-8859-15";//$options["ansi_encoding"] = "ISO-8859-16";//// output programming language//// only those listed below are supported, if you pass// other name, service will return ERROR_INVALID_LANG//$options["lang"] ="cpp";//$options["lang"] = "csharp";//$options["lang"] = "vbnet";//$options["lang"] = "delphi";//$options["lang"] = "java";//$options["lang"] = "js";//$options["lang"] = "python";//$options["lang"] = "ruby";//$options["lang"] = "autoit";//$options["lang"] = "powershell";//$options["lang"] = "haskell";//$options["lang"] = "masm";//$options["lang"] = "fasm";//// minimum number of encryption commands//// demo mode supports only up to 3 commands (50 in full version),// if you pass more than this number, service will return// ERROR_CMD_MIN//$options["cmd_min"] =1;//$options["cmd_min"] = 1;//// maximum number of encryption commands//// demo mode supports only up to 3 commands (50 in full version),// if you pass more than this number, service will return// ERROR_CMD_MAX//$options["cmd_max"] =3;//$options["cmd_max"] = 50;//// store encrypted string as a local variable (if supported// by the programming language), otherwise it's stored as// a global variable//$options["local"] =false;//$options["local"] = true;//// encrypt string or file contents//$result =stringencrypt($options);if ($result !=false){if ($result["error"] ==ERROR_SUCCESS){// if compression was enabled, we need to// decompress the output source codeif ($options["compression"] ==true){$source = @gzuncompress(@base64_decode($source));}else{$source =$result["source"];}// display decryptor bodyecho"<pre>".$source."</pre>";// display number of credits leftecho"<p>You have{$result['credits_left']} credits left.</p>";// display initial number of creditsecho"<p>Initial number of credits{$result['credits_total']}.</p>";// activation code has expired, notify userif ($result["expired"] ==true){echo"<p>Your activation code has expired!</p>";}}else{echo"An error occured (code".$result["error"].")";}}else{echo"Cannot connect to the API interface!";}?>

Return values:

Error codes:

"is_demo" command usage example

<?php//////////////////////////////////////////////////////////////////////////////////// StringEncrypt.com Web API usage example//// Version        : v1.2// Language       : PHP// Author         : Bartosz Wójcik// Web page       : https://www.stringencrypt.com//////////////////////////////////////////////////////////////////////////////////// include main libraryinclude ("stringencrypt.php");//// setup options//$options =array();//// activation code, you can leave it empty for demo version, but keep in// mind that in demo versions there are many limitations)//$options["code"] ="";//// API command to execute//// "encrypt" - encrypt input string or file bytes, returns array of://// $result["error"] - error code// $result["source"] - decryptor source code// $result["expired"] - activation code expiration flag (bool)// $result["credits_left"] - number of credits left//// "is_demo" - checks current activation code and returns array of://// $result["demo"] - demo mode flag (bool)// $result["label_limit"] - label limit length// $result["string_limit"] - string/file limit lenght// $result["credits_left"] - number of credits left// $result["cmd_min"] - minimum number of encryption commands// $result["cmd_max"] - maximum number of encryption commands//$options["command"] = "encrypt";$options["command"] ="is_demo";//// execute API command//$result =stringencrypt($options);if ($result !=false){if ($result["demo"] ==true){echo"<p>You are running in DEMO mode</p>";}else{echo"<p>You are running in FULL mode</p>";// display number of credits leftecho"<p>You have{$result['credits_left']} credits left.</p>";// display initial number of creditsecho"<p>Initial number of credits{$result['credits_total']}.</p>";}echo"<p>Label max. length{$result['label_limit']} characters</p>";echo"<p>String/file max. length{$result['string_limit']} characters</p>";echo"<p>Minimum number of encryption commands{$result['cmd_min']}</p>";echo"<p>Maximum number of encryption commands{$result['cmd_max']}</p>";}else{echo"Cannot connect to the API interface!";}?>

Return values:

Error codes

Features

How does it work?

The result

Supported programming languages

C/C++ encryption (UNICODE example)

// encrypted with https://www.stringencrypt.com (v1.3.0) [C/C++]// wszLabel = "C/C++ String Encryption"wchar_t wszLabel[24] = {0x5ADA,0x6C21,0x5A24,0x6DEF,0x6DFE,0x74C5,0x5240,0x428B,0x4382,0x4F69,0x4CDC,0x4827,0x73A6,0x598D,0x4CF8,0x4A43,0x40AA,0x3FB1,0x4D34,0x42DF,0x474E,0x42D5,0x4C50,0x8514 };for (unsignedint JTIif =0, ktTcs =0; JTIif <24; JTIif++){        ktTcs = wszLabel[JTIif];        ktTcs ^= JTIif;        ktTcs ++;        ktTcs += JTIif;        ktTcs ^= JTIif;        ktTcs = (((ktTcs &0xFFFF) >>3) | (ktTcs <<13)) &0xFFFF;        ktTcs = ~ktTcs;        ktTcs += JTIif;        ktTcs = (((ktTcs &0xFFFF) >>1) | (ktTcs <<15)) &0xFFFF;        ktTcs = ~ktTcs;        ktTcs += JTIif;        ktTcs ^=0xB7B5;        ktTcs += JTIif;        ktTcs ^= JTIif;        ktTcs -= JTIif;        ktTcs = ((ktTcs <<13) | ( (ktTcs &0xFFFF) >>3)) &0xFFFF;        wszLabel[JTIif] = ktTcs;}wprintf(wszLabel);

C# Sharp encryption (UNICODE example)

// encrypted with https://www.stringencrypt.com (v1.3.0) [C#]// superSecretString = "Easy encryption in C#"StringsuperSecretString="\u6B56\uA14A\u834B\u954C\uD95A\uB14E\u814F\u595D"+"\u9551\u8152\u9553\uBF54\u5B62\u9556\u9157\u2F65"+"\u5366\u9F5A\uC568\u0169\uFF6A";for(intXBasD=0,Dbzej=0;XBasD<21;XBasD++){Dbzej=superSecretString[XBasD];Dbzej-=XBasD;Dbzej=((Dbzej<<8)|((Dbzej&0xFFFF)>>8))&0xFFFF;Dbzej^=0xF9A1;Dbzej=(((Dbzej&0xFFFF)>>1)|(Dbzej<<15))&0xFFFF;Dbzej-=0xA3CC;Dbzej^=XBasD;Dbzej+=0x4C2C;superSecretString=superSecretString.Substring(0,XBasD)+(char)(Dbzej&0xFFFF)+superSecretString.Substring(XBasD+1);}MessageBox.Show(superSecretString);

Visual Basic .NET aka VB.NET encryption (UNICODE EXAMPLE)

' encrypted with https://www.stringencrypt.com (v1.3.0) [Visual Basic .NET]' EncryptedString = "Visual Basic .NET string encryption"DimepTlz()AsInteger={&H8ED9,&H3BD9,&HF1D8,&HAFD8,&H63D8,&H38D8,&H44D8,&HC2D7,&H85D7,&H33D7,&HFDD6,&HA3D6,&HC4D6,&H76D6,&H16D6,&HC1D5,&H90D5,&H84D5,&HF1D4,&HB0D4,&H76D4,&H3FD4,&HFAD3,&HBDD3,&HC4D3,&H21D3,&HFAD2,&HC7D2,&H76D2,&H2DD2,&HF4D1,&HB0D1,&H63D1,&H35D1,&HF6D0}DimEncryptedStringAsStringDimBePuQAsIntegerDimblvjnAsIntegerForblvjn=0To34BePuQ=epTlz(blvjn)BePuQ-=1BePuQ=(((BePuQAnd&HFFFF)>>13)Or(BePuQ<<3))And&HFFFFBePuQ+=blvjnBePuQ-=&HF74CBePuQ+=blvjnBePuQ-=&H2E7BBePuQ=(((BePuQAnd&HFFFF)>>8)Or(BePuQ<<8))And&HFFFFBePuQ=NotBePuQBePuQ=BePuQXorblvjnBePuQ+=1BePuQ+=blvjnBePuQ=((BePuQ<<13)Or((BePuQAnd&HFFFF)>>3))And&HFFFFEncryptedString=EncryptedString+ChrW(BePuQAnd&HFFFF)NextblvjnMessageBox.Show(EncryptedString)

Delphi & Pascal encryption (UNICODE example)

// encrypted with https://www.stringencrypt.com (v1.3.0) [Delphi / Pascal]var// mySecret = "Delphi is awesome!"  mySecret:array[0..19]of WideChar;  EPmwd: Integer;  ZHnps: Integer;begin   mySecret[16] := WideChar($C22E); mySecret[5] := WideChar($C1FA);  mySecret[7] := WideChar($C206); mySecret[8] := WideChar($C208);  mySecret[10] := WideChar($C1FA); mySecret[4] := WideChar($C1FB);  mySecret[9] := WideChar($C1AD); mySecret[17] := WideChar($C1EA);  mySecret[2] := WideChar($C1FB); mySecret[11] := WideChar($C1BC);  mySecret[3] := WideChar($C1FD); mySecret[6] := WideChar($C1BF);  mySecret[15] := WideChar($C202); mySecret[0] := WideChar($C18F);  mySecret[1] := WideChar($C1EE); mySecret[12] := WideChar($C206);  mySecret[18] := WideChar($C28F); mySecret[14] := WideChar($C200);  mySecret[13] := WideChar($C1B8);for ZHnps :=0to19dobegin    EPmwd := Ord(mySecret[ZHnps]);    EPmwd := EPmwd - ZHnps;    EPmwd := EPmwd - $01BE;    EPmwd :=not EPmwd;    EPmwd := EPmwd + $2D7A;    EPmwd := EPmwd - ZHnps;    EPmwd := EPmwdxor ZHnps;    EPmwd := EPmwd + $004B;    EPmwd := EPmwdxor ZHnps;    EPmwd := EPmwd + ZHnps;    Inc(EPmwd);    EPmwd := EPmwdxor $EB5C;    EPmwd := EPmwd + $799C;    EPmwd := EPmwdxor ZHnps;    mySecret[ZHnps] := WideChar(EPmwd);end;   ShowMessage(mySecret);

Java encryption (UNICODE example)

// encrypted with https://www.stringencrypt.com (v1.3.0) [Java]// myJavaPassword = "Very secret password! QWERTY"StringmyJavaPassword ="";intJbeMY[] = {0x0434,0x842C,0x0426,0x8422,0x03CD,0x8423,0x842C,0x842B,0x0416,0x843C,0x0413,0x03DD,0x0415,0x843E,0x8413,0x8413,0x8421,0x8425,0x0426,0x040B,0x83AE,0x03AD,0x8436,0x8431,0x83CC,0x0406,0x0403,0x8402 };for (intzuLRG =0,tnYzy =0;zuLRG <28;zuLRG++){tnYzy =JbeMY[zuLRG];tnYzy --;tnYzy ^=zuLRG;tnYzy +=0x99C8;tnYzy ^=zuLRG;tnYzy ^=0x95C1;tnYzy = (((tnYzy &0xFFFF) >>15) | (tnYzy <<1)) &0xFFFF;tnYzy --;tnYzy ^=0xFFFF;tnYzy +=0x10CA;myJavaPassword =myJavaPassword + (char)(tnYzy &0xFFFF);}System.out.println(myJavaPassword);

JavaScript encryption (ANSI)

<scripttype="text/javascript">// encrypted with https://www.stringencrypt.com (v1.3.0) [JavaScript]// hiddenJavaScriptString = "How to encrypt string in JavaScript? That\'s how!"var hiddenJavaScriptString = "\x8C\xB4\x4E\x5B\x4A\xD4\x07\xBC\xB4\xC4\x52\x7E\x1A\x72\xE7\xB6" +                             "\xDA\xDA\x88\x67\xF8\x5C\x67\x49\x50\xB9\x47\xFA\x1D\xED\x2D\x39" +                             "\x8D\x21\x57\x66\xA0\xB1\xA9\x8D\x5F\xF0\x53\x9C\x7A\x1E\xC3\xF0"; for (var oBFEi = 0, hFSrA = 0; oBFEi<48;oBFEi++){hFSrA=hiddenJavaScriptString.charCodeAt(oBFEi);hFSrA=((hFSrA<<1)|((hFSrA&0xFF)>>7))&0xFF;hFSrA+=0x9E;hFSrA=((hFSrA<<6)|((hFSrA&0xFF)>>2))&0xFF;hFSrA^=oBFEi;hFSrA-=oBFEi;hFSrA^=0xFF;hFSrA=(((hFSrA&0xFF)>>6)|(hFSrA<<2))&0xFF;hFSrA^=0xC3;hFSrA=((hFSrA<<4)|((hFSrA&0xFF)>>4))&0xFF;hFSrA+=0xD1;hFSrA-=oBFEi;hFSrA+=0x0B;hFSrA^=0xD8;hFSrA=(((hFSrA&0xFF)>>7)|(hFSrA<<1))&0xFF;hFSrA+=0xB0;hiddenJavaScriptString=hiddenJavaScriptString.substr(0,oBFEi)+String.fromCharCode(hFSrA&0xFF)+hiddenJavaScriptString.substr(oBFEi+1);}alert(hiddenJavaScriptString);</script>

Python encryption (UNICODE example)

# encrypted with https://www.stringencrypt.com (v1.3.0) [Python]# cute_wabbit = "A little girl goes into a pet show and asks for a wabbit... http..."cute_wabbit= [0x1005,0x4004,0x4005,0x5006,0x4003,0x0004,0x4002,0x9001,0x0009,0x300E,0x100F,0xE00F,0xC00A,0x400D,0xF00C,0x300B,0x5013,0x7013,0x8015,0x5012,0xE018,0x0018,0x7016,0xC011,0x1019,0x401E,0x801C,0x901C,0x401D,0x4019,0xB01F,0x401F,0xF02F,0x302F,0x8029,0xD02E,0xE02C,0x002B,0x802E,0xD029,0x3026,0xF026,0xB028,0xC024,0x6022,0xB021,0xA023,0xC027,0x103B,0x4040,0xF03A,0xD03A,0x2040,0x603F,0x103E,0x803E,0xE035,0xA036,0x6037,0xC038,0x8036,0x0036,0xC037,0xC038,0x3058,0xE053,0x7051,0x3052,0x7053,0x3054,0xF051,0x2055,0x005E,0xD05D,0xC060,0x4060,0xF05A,0xA059,0x6060,0x305B,0x2044,0x3044,0x7045,0x8042,0xF048,0x7047,0x7042,0x4045,0x504A,0x904A,0x704B,0xE04B,0xF04A,0x7049,0xB050,0x9050,0x4080,0x1080,0x5079,0xB07D,0x107C,0x607B,0xA07A,0x5079,0x4076 ]forwEzdtinrange(105):zWqET=cute_wabbit[wEzdt]zWqET-=1zWqET^=wEzdtzWqET= (((zWqET&0xFFFF)>>14)| (zWqET<<2))&0xFFFFzWqET^=wEzdtzWqET= (((zWqET&0xFFFF)>>14)| (zWqET<<2))&0xFFFFcute_wabbit[wEzdt]=zWqETcute_wabbit=''.join(chr(zWqET&0xFFFF)forzWqETincute_wabbit)delwEzdt,zWqETprint(cute_wabbit)

Ruby encryption (UNICODE example)

# encrypted with https://www.stringencrypt.com (v1.3.0) [Ruby]# ruby = "Ruby on rails"ruby="\u68EA\u60A2\u78C6\u7096\u4946\u40A6\u58A6\u5140\u287A\u209A\u38C8\u30C0\u0870"ruby.codepoints.each_with_indexdo |komgu,rydut|komgu=((komgu <<5) |((komgu &0xFFFF) >>11)) &0xFFFFkomgu ^=rydutkomgu=(((komgu &0xFFFF) >>6) |(komgu <<10)) &0xFFFFkomgu +=rydutkomgu -=0x34D0komgu ^=rydutkomgu=((komgu <<13) |((komgu &0xFFFF) >>3)) &0xFFFFkomgu= ~komgukomgu -=1komgu=((komgu <<3) |((komgu &0xFFFF) >>13)) &0xFFFFkomgu ^=rydutruby[rydut]=[komgu &0xFFFF].pack('U').force_encoding('UTF-8')endputsruby

```autoit; encrypted with https://www.stringencrypt.com (v1.3.0) [AutoIt]#include<Array.au3>; $autoit_obfuscator = "We got it too https://www.pelock.com/products/autoit-obfuscator"Global$autoit_obfuscator[64]= [0xD440,0xCD01,0xEF42,0xCC83,0xC944,0xC485,0xEE46,0xCA87,_0xC7C8,0xED89,0xC74A,0xCA8B,0xCB4C,0xEC8D,0xC84E,0xC60F,_0xC1D0,0xC391,0xC2D2,0xE613,0xED54,0xED15,0xC1D6,0xC197,_0xC258,0xEE99,0xC15A,0xCB9B,0xCEDC,0xCF1D,0xC9DE,0xCD9F,_0xE0E0,0xC621,0xC0E2,0xC1A3,0xE164,0xCEA5,0xCF66,0xC1A7,_0xC7E8,0xCF29,0xC4EA,0xCF2B,0xCD6C,0xE32D,0xC4EE,0xCEAF,_0xC9F0,0xC431,0xC7F2,0xC933,0xE474,0xC535,0xC376,0xC137,_0xCB78,0xC839,0xC0FA,0xC1BB,0xCAFC,0xC73D,0xC97E,0xF03F ]For$PxWtE=0to63$eUOPa=$autoit_obfuscator[$PxWtE]$eUOPa=BitXOR($eUOPa,$PxWtE)$eUOPa=$eUOPa-1$eUOPa=BitRotate($eUOPa,10,"W")$eUOPa=$eUOPa+1$eUOPa=BitXOR($eUOPa,$PxWtE)$eUOPa=BitNOT($eUOPa)$eUOPa=BitRotate($eUOPa,15,"W")$autoit_obfuscator[$PxWtE]=ChrW(BitAND($eUOPa,0xFFFF))Next$autoit_obfuscator= _ArrayToString($autoit_obfuscator,"")ConsoleWrite($autoit_obfuscator)

PowerShell encryption (UNICODE example)

# encrypted with https://www.stringencrypt.com (v1.3.0) [PowerShell]# $Label = "Well, it has some interesting syntax!"[uint16[]]$pYeOS=0x5654,0x5651,0x1650,0x9650,0x1661,0x9664,0xD652,0x9650,0x1666,0x9654,0xD656,0xD652,0x1668,0xD653,0x5655,0x5656,0xD658,0x966A,0xD658,0x1658,0x1657,0x565B,0x9658,0x565C,0x5659,0x9659,0xD65C,0x165C,0x565E,0x9670,0x565C,0x565B,0x965E,0x965D,0xD662,0x965D,0xD673[string]$Label=""for ($TPYSL=0;$TPYSL-lt37;$TPYSL++){$kqSuK=$pYeOS[$TPYSL]$kqSuK=-bnot$kqSuK$kqSuK= (($kqSuK-shl7)-bor ( ($kqSuK-band0xFFFF)-shr9))-band0xFFFF$kqSuK+=1$kqSuK= ((($kqSuK-band0xFFFF)-shr5)-bor ($kqSuK-shl11))-band0xFFFF$kqSuK+=$TPYSL$kqSuK-=1$kqSuK+=$TPYSL$kqSuK-=0xAE56$Label+= [char]($kqSuK-band0xFFFF)}Write-Host$Label

Haskell encryption (ANSI example)

-- encrypted with https://www.stringencrypt.com (v1.3.0) [Haskell]moduleMainwhereimportqualifiedData.CharimportqualifiedData.Bits main=doputStrLn$ gimmeh-- gimmeh = "Monads! I need more Monads!"gimmeh=zipWith f [0..] [0x40,0x7F,0x61,0x53,0x6D,0x67,0x96,0x96,0x4C,0x98,0x69,0x47,0x44,0x40,0x9F,0x4B,0x4E,0x6E,0xBE,0x82,0x94,0xB3,0xB5,0x47,0xB1,0xA3,0x8A ]where    f vpkqq ujzsd=let wcufe0= ujzsd                        wcufe1= wcufe0`Data.Bits.xor`0xB0                        wcufe2=Data.Bits.complement wcufe1                        wcufe3= wcufe2-0xD0                        wcufe4=Data.Bits.complement wcufe3                        wcufe5= wcufe4-0x0E                        wcufe6= wcufe5- vpkqq                        wcufe7= wcufe6`Data.Bits.xor` vpkqq                        wcufe8= wcufe7- vpkqq                        wcufe9=Data.Bits.complement wcufe8inData.Char.chr (wcufe9Data.Bits..&.0xFF)

MASM Assembler 32 bit encryption (UNICODE example)

; encrypted with https://www.stringencrypt.com (v1.3.0) [MASM Assembler (32 bit)].data        ; szMyGoodOldFriend = "I will be always here :)"        szMyGoodOldFriend      dw0BD37h,0BD4Bh,0BD63h,0BD14h,0BD0Ch,0BD13h,0BD4Eh,0BD17hdw0BD13h,0BD53h,0BD15h,0BD55h,0BCE9h,0BD5Ah,0BCF1h,0BCE2hdw0BC94h,0BD63h,0BD59h,0BCB3h,0BD5Fh,0BC9Fh,0BCF8h,0BCA8hdw0BD3Ch.codemovecx, offset szMyGoodOldFriendmovedx,25andeax,0@@:movbx, word ptr[ecx+eax]notebxsubebx,eaxnotebxxorebx,02C59hsubebx,0DFB5haddebx,eaxnotebxaddebx,061C5hxorebx,04FBChdecebxaddebx,eaxnotebxmov     word ptr[ecx+eax],bxinceaxdecedxjne     @bpush0pushecxpushecxpush0call    MessageBoxW

FASM Assembler 32 bit (ANSI example)

; encrypted with https://www.stringencrypt.com (v1.3.0) [FASM Assembler (32 bit)]        ; szFasm = "Hi Tomek Grysztar :)"        local   szFasm[21]:BYTEleaedx,[szFasm]mov     byte[edx+8],0D6hmov     byte[edx+9],0F5hmov     byte[edx+5],09Fhmov     byte[edx+0],0EEhmov     byte[edx+3],084hmov     byte[edx+2],0E2hmov     byte[edx+16],08Chmov     byte[edx+19],0FBhmov     byte[edx+10],0A4hmov     byte[edx+7],09Dhmov     byte[edx+18],0FChmov     byte[edx+17],094hmov     byte[edx+4],0ADhmov     byte[edx+6],0A7hmov     byte[edx+11],0BBhmov     byte[edx+12],0A1hmov     byte[edx+15],0ABhmov     byte[edx+14],0BEhmov     byte[edx+20],0FEhmov     byte[edx+13],0AAhmov     byte[edx+1],093hmoveax,21subebx,ebx@@:movcl, byte[edx+ebx]xorecx,ebxdececxxorecx,043hnotecxaddecx,015hxorecx,ebxaddecx,ebxaddecx,055hxorecx,ebxxorecx,029hxorecx,ebxxorecx,034hxorecx,ebxxorecx,0EFhdececxmov     byte[edx+ebx],clincebxdeceaxjne     @bpush0pushedxpushedxpush0call[MessageBoxA]

Fin