rule win_dyepack_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.dyepack"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 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 = { 52 8d44242c 51 50 56 ff15???????? 85c0 }
            // n = 7, score = 300
            //   52                   | push                edx
            //   8d44242c             | lea                 eax, [esp + 0x2c]
            //   51                   | push                ecx
            //   50                   | push                eax
            //   56                   | push                esi
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax

        $sequence_1 = { 53 52 8d44242c 51 50 56 ff15???????? }
            // n = 7, score = 300
            //   53                   | push                ebx
            //   52                   | push                edx
            //   8d44242c             | lea                 eax, [esp + 0x2c]
            //   51                   | push                ecx
            //   50                   | push                eax
            //   56                   | push                esi
            //   ff15????????         |                     

        $sequence_2 = { 50 ff15???????? 8bf0 83feff 7510 ff15???????? }
            // n = 6, score = 300
            //   50                   | push                eax
            //   ff15????????         |                     
            //   8bf0                 | mov                 esi, eax
            //   83feff               | cmp                 esi, -1
            //   7510                 | jne                 0x12
            //   ff15????????         |                     

        $sequence_3 = { 53 aa 8b842434100000 53 6800000040 50 ff15???????? }
            // n = 7, score = 300
            //   53                   | push                ebx
            //   aa                   | stosb               byte ptr es:[edi], al
            //   8b842434100000       | mov                 eax, dword ptr [esp + 0x1034]
            //   53                   | push                ebx
            //   6800000040           | push                0x40000000
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_4 = { 56 ffd7 8d4c2418 53 51 8d54242c }
            // n = 6, score = 300
            //   56                   | push                esi
            //   ffd7                 | call                edi
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   53                   | push                ebx
            //   51                   | push                ecx
            //   8d54242c             | lea                 edx, [esp + 0x2c]

        $sequence_5 = { ffd7 8d4c2418 53 51 }
            // n = 4, score = 300
            //   ffd7                 | call                edi
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   53                   | push                ebx
            //   51                   | push                ecx

        $sequence_6 = { 760b b900100000 895c2420 eb04 89442420 8d542418 }
            // n = 6, score = 300
            //   760b                 | jbe                 0xd
            //   b900100000           | mov                 ecx, 0x1000
            //   895c2420             | mov                 dword ptr [esp + 0x20], ebx
            //   eb04                 | jmp                 6
            //   89442420             | mov                 dword ptr [esp + 0x20], eax
            //   8d542418             | lea                 edx, [esp + 0x18]

        $sequence_7 = { eb04 8b4c2410 2bcd 1bc7 }
            // n = 4, score = 300
            //   eb04                 | jmp                 6
            //   8b4c2410             | mov                 ecx, dword ptr [esp + 0x10]
            //   2bcd                 | sub                 ecx, ebp
            //   1bc7                 | sbb                 eax, edi

        $sequence_8 = { 7f08 8b4c2410 3be9 72ac 56 ff15???????? 56 }
            // n = 7, score = 300
            //   7f08                 | jg                  0xa
            //   8b4c2410             | mov                 ecx, dword ptr [esp + 0x10]
            //   3be9                 | cmp                 ebp, ecx
            //   72ac                 | jb                  0xffffffae
            //   56                   | push                esi
            //   ff15????????         |                     
            //   56                   | push                esi

        $sequence_9 = { 2bcd 1bc7 7815 7f08 81f900100000 760b }
            // n = 6, score = 300
            //   2bcd                 | sub                 ecx, ebp
            //   1bc7                 | sbb                 eax, edi
            //   7815                 | js                  0x17
            //   7f08                 | jg                  0xa
            //   81f900100000         | cmp                 ecx, 0x1000
            //   760b                 | jbe                 0xd

    condition:
        7 of them and filesize < 212992
}