rule win_doublefantasy_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.doublefantasy."
        info = "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.doublefantasy"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { 56 e8???????? 8945e4 3bc6 7c49 8b07 }
            // n = 6, score = 200
            //   56                   | push                esi
            //   e8????????           |                     
            //   8945e4               | mov                 dword ptr [ebp - 0x1c], eax
            //   3bc6                 | cmp                 eax, esi
            //   7c49                 | jl                  0x4b
            //   8b07                 | mov                 eax, dword ptr [edi]

        $sequence_1 = { ff15???????? 83f8ff 751c 397514 7409 ff7514 }
            // n = 6, score = 200
            //   ff15????????         |                     
            //   83f8ff               | cmp                 eax, -1
            //   751c                 | jne                 0x1e
            //   397514               | cmp                 dword ptr [ebp + 0x14], esi
            //   7409                 | je                  0xb
            //   ff7514               | push                dword ptr [ebp + 0x14]

        $sequence_2 = { c6430174 8b4508 668b4002 668945dc 3935???????? 7421 }
            // n = 6, score = 200
            //   c6430174             | mov                 byte ptr [ebx + 1], 0x74
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   668b4002             | mov                 ax, word ptr [eax + 2]
            //   668945dc             | mov                 word ptr [ebp - 0x24], ax
            //   3935????????         |                     
            //   7421                 | je                  0x23

        $sequence_3 = { 6805010000 57 68???????? e8???????? }
            // n = 4, score = 200
            //   6805010000           | push                0x105
            //   57                   | push                edi
            //   68????????           |                     
            //   e8????????           |                     

        $sequence_4 = { 393d???????? 7523 3d52000028 741c 3d54000028 750c }
            // n = 6, score = 200
            //   393d????????         |                     
            //   7523                 | jne                 0x25
            //   3d52000028           | cmp                 eax, 0x28000052
            //   741c                 | je                  0x1e
            //   3d54000028           | cmp                 eax, 0x28000054
            //   750c                 | jne                 0xe

        $sequence_5 = { 8a91908c2700 8b4c2408 8811 33d2 8a10 56 }
            // n = 6, score = 200
            //   8a91908c2700         | mov                 dl, byte ptr [ecx + 0x278c90]
            //   8b4c2408             | mov                 ecx, dword ptr [esp + 8]
            //   8811                 | mov                 byte ptr [ecx], dl
            //   33d2                 | xor                 edx, edx
            //   8a10                 | mov                 dl, byte ptr [eax]
            //   56                   | push                esi

        $sequence_6 = { 3d09000c80 7451 3bc3 7c59 6aff ff35???????? }
            // n = 6, score = 200
            //   3d09000c80           | cmp                 eax, 0x800c0009
            //   7451                 | je                  0x53
            //   3bc3                 | cmp                 eax, ebx
            //   7c59                 | jl                  0x5b
            //   6aff                 | push                -1
            //   ff35????????         |                     

        $sequence_7 = { 5e 7e0f 0fb64002 83e03f 8a80908c2700 eb02 }
            // n = 6, score = 200
            //   5e                   | pop                 esi
            //   7e0f                 | jle                 0x11
            //   0fb64002             | movzx               eax, byte ptr [eax + 2]
            //   83e03f               | and                 eax, 0x3f
            //   8a80908c2700         | mov                 al, byte ptr [eax + 0x278c90]
            //   eb02                 | jmp                 4

        $sequence_8 = { c1e204 0bd6 837c241001 8a92908c2700 885101 7e1c }
            // n = 6, score = 200
            //   c1e204               | shl                 edx, 4
            //   0bd6                 | or                  edx, esi
            //   837c241001           | cmp                 dword ptr [esp + 0x10], 1
            //   8a92908c2700         | mov                 dl, byte ptr [edx + 0x278c90]
            //   885101               | mov                 byte ptr [ecx + 1], dl
            //   7e1c                 | jle                 0x1e

        $sequence_9 = { e8???????? 8b4605 c68094a3270000 ff35???????? ff35???????? e8???????? 83c414 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   8b4605               | mov                 eax, dword ptr [esi + 5]
            //   c68094a3270000       | mov                 byte ptr [eax + 0x27a394], 0
            //   ff35????????         |                     
            //   ff35????????         |                     
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14

        $sequence_10 = { 43 895de0 33ff 897de4 897dd4 897dd8 897dfc }
            // n = 7, score = 200
            //   43                   | inc                 ebx
            //   895de0               | mov                 dword ptr [ebp - 0x20], ebx
            //   33ff                 | xor                 edi, edi
            //   897de4               | mov                 dword ptr [ebp - 0x1c], edi
            //   897dd4               | mov                 dword ptr [ebp - 0x2c], edi
            //   897dd8               | mov                 dword ptr [ebp - 0x28], edi
            //   897dfc               | mov                 dword ptr [ebp - 4], edi

        $sequence_11 = { 0fb608 c1e902 8a91908c2700 8b4c2408 }
            // n = 4, score = 200
            //   0fb608               | movzx               ecx, byte ptr [eax]
            //   c1e902               | shr                 ecx, 2
            //   8a91908c2700         | mov                 dl, byte ptr [ecx + 0x278c90]
            //   8b4c2408             | mov                 ecx, dword ptr [esp + 8]

        $sequence_12 = { 8a92908c2700 885101 7e1c 0fb67002 33d2 8a5001 c1ee06 }
            // n = 7, score = 200
            //   8a92908c2700         | mov                 dl, byte ptr [edx + 0x278c90]
            //   885101               | mov                 byte ptr [ecx + 1], dl
            //   7e1c                 | jle                 0x1e
            //   0fb67002             | movzx               esi, byte ptr [eax + 2]
            //   33d2                 | xor                 edx, edx
            //   8a5001               | mov                 dl, byte ptr [eax + 1]
            //   c1ee06               | shr                 esi, 6

        $sequence_13 = { e8???????? 3bc7 8945e8 7d42 8b4628 3bc7 7414 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   3bc7                 | cmp                 eax, edi
            //   8945e8               | mov                 dword ptr [ebp - 0x18], eax
            //   7d42                 | jge                 0x44
            //   8b4628               | mov                 eax, dword ptr [esi + 0x28]
            //   3bc7                 | cmp                 eax, edi
            //   7414                 | je                  0x16

        $sequence_14 = { 720f 3c7a 770b 0fb6c0 8a80ad8c2700 eb02 }
            // n = 6, score = 200
            //   720f                 | jb                  0x11
            //   3c7a                 | cmp                 al, 0x7a
            //   770b                 | ja                  0xd
            //   0fb6c0               | movzx               eax, al
            //   8a80ad8c2700         | mov                 al, byte ptr [eax + 0x278cad]
            //   eb02                 | jmp                 4

        $sequence_15 = { 0fb6c0 8a80ad8c2700 eb02 32c0 84c0 7410 }
            // n = 6, score = 200
            //   0fb6c0               | movzx               eax, al
            //   8a80ad8c2700         | mov                 al, byte ptr [eax + 0x278cad]
            //   eb02                 | jmp                 4
            //   32c0                 | xor                 al, al
            //   84c0                 | test                al, al
            //   7410                 | je                  0x12

    condition:
        7 of them and filesize < 172032
}