rule win_dyepack_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-05-30"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.dyepack"
        malpedia_rule_date = "20200529"
        malpedia_hash = "92c362319514e5a6da26204961446caa3a8b32a8"
        malpedia_version = "20200529"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using yara-signator.
     * The code and documentation / approach is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { 89442420 8d542418 53 52 8d44242c 51 50 }
            // n = 7, score = 300
            //   89442420             | mov                 dword ptr [esp + 0x20], eax
            //   8d542418             | lea                 edx, [esp + 0x18]
            //   53                   | push                ebx
            //   52                   | push                edx
            //   8d44242c             | lea                 eax, [esp + 0x2c]
            //   51                   | push                ecx
            //   50                   | push                eax

        $sequence_1 = { 3be9 72ac 56 ff15???????? 56 ff15???????? 8b8c2428100000 }
            // n = 7, score = 300
            //   3be9                 | cmp                 ebp, ecx
            //   72ac                 | jb                  0xffffffae
            //   56                   | push                esi
            //   ff15????????         |                     
            //   56                   | push                esi
            //   ff15????????         |                     
            //   8b8c2428100000       | mov                 ecx, dword ptr [esp + 0x1028]

        $sequence_2 = { ffd7 8d4c2418 53 51 }
            // n = 4, score = 300
            //   ffd7                 | call                edi
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   53                   | push                ebx
            //   51                   | push                ecx

        $sequence_3 = { ff15???????? 56 ff15???????? 8d442410 895c2410 50 56 }
            // n = 7, score = 300
            //   ff15????????         |                     
            //   56                   | push                esi
            //   ff15????????         |                     
            //   8d442410             | lea                 eax, [esp + 0x10]
            //   895c2410             | mov                 dword ptr [esp + 0x10], ebx
            //   50                   | push                eax
            //   56                   | push                esi

        $sequence_4 = { 6880000000 6a03 53 aa 8b842434100000 }
            // n = 5, score = 300
            //   6880000000           | push                0x80
            //   6a03                 | push                3
            //   53                   | push                ebx
            //   aa                   | stosb               byte ptr es:[edi], al
            //   8b842434100000       | mov                 eax, dword ptr [esp + 0x1034]

        $sequence_5 = { ffd7 8d4c2418 53 51 8d54242c }
            // n = 5, score = 300
            //   ffd7                 | call                edi
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   53                   | push                ebx
            //   51                   | push                ecx
            //   8d54242c             | lea                 edx, [esp + 0x2c]

        $sequence_6 = { 8d4c2418 53 51 8d54242c 6a01 52 }
            // n = 6, score = 300
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   53                   | push                ebx
            //   51                   | push                ecx
            //   8d54242c             | lea                 edx, [esp + 0x2c]
            //   6a01                 | push                1
            //   52                   | push                edx

        $sequence_7 = { 8b3d???????? 55 6a02 53 6aff 56 }
            // n = 6, score = 300
            //   8b3d????????         |                     
            //   55                   | push                ebp
            //   6a02                 | push                2
            //   53                   | push                ebx
            //   6aff                 | push                -1
            //   56                   | push                esi

        $sequence_8 = { ffd7 8b442414 8b4c2410 33ed }
            // n = 4, score = 300
            //   ffd7                 | call                edi
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   8b4c2410             | mov                 ecx, dword ptr [esp + 0x10]
            //   33ed                 | xor                 ebp, ebp

        $sequence_9 = { 56 895c241c ff15???????? 53 53 53 56 }
            // n = 7, score = 300
            //   56                   | push                esi
            //   895c241c             | mov                 dword ptr [esp + 0x1c], ebx
            //   ff15????????         |                     
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   56                   | push                esi

    condition:
        7 of them and filesize < 212992
}