rule win_gameover_p2p_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.gameover_p2p."
        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.gameover_p2p"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 834c2418ff 6880000000 6a01 53 53 8d442430 50 }
            // n = 7, score = 100
            //   834c2418ff           | or                  dword ptr [esp + 0x18], 0xffffffff
            //   6880000000           | push                0x80
            //   6a01                 | push                1
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   8d442430             | lea                 eax, [esp + 0x30]
            //   50                   | push                eax

        $sequence_1 = { 8d83c8000000 0fb7d0 8bc2 3bd9 7d0b 663bd1 }
            // n = 6, score = 100
            //   8d83c8000000         | lea                 eax, [ebx + 0xc8]
            //   0fb7d0               | movzx               edx, ax
            //   8bc2                 | mov                 eax, edx
            //   3bd9                 | cmp                 ebx, ecx
            //   7d0b                 | jge                 0xd
            //   663bd1               | cmp                 dx, cx

        $sequence_2 = { 6a00 6a00 0fb6c3 83ec0c ff348560933902 8d4df4 e8???????? }
            // n = 7, score = 100
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   0fb6c3               | movzx               eax, bl
            //   83ec0c               | sub                 esp, 0xc
            //   ff348560933902       | push                dword ptr [eax*4 + 0x2399360]
            //   8d4df4               | lea                 ecx, [ebp - 0xc]
            //   e8????????           |                     

        $sequence_3 = { 8d4c242c e8???????? 85c0 0f95c7 }
            // n = 4, score = 100
            //   8d4c242c             | lea                 ecx, [esp + 0x2c]
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   0f95c7               | setne               bh

        $sequence_4 = { 85c0 750c 8d8c24180b0000 e8???????? 833d????????ff 7507 }
            // n = 6, score = 100
            //   85c0                 | test                eax, eax
            //   750c                 | jne                 0xe
            //   8d8c24180b0000       | lea                 ecx, [esp + 0xb18]
            //   e8????????           |                     
            //   833d????????ff       |                     
            //   7507                 | jne                 9

        $sequence_5 = { 8d4d08 e8???????? 8d45f4 50 8d4d08 e8???????? 84c0 }
            // n = 7, score = 100
            //   8d4d08               | lea                 ecx, [ebp + 8]
            //   e8????????           |                     
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   50                   | push                eax
            //   8d4d08               | lea                 ecx, [ebp + 8]
            //   e8????????           |                     
            //   84c0                 | test                al, al

        $sequence_6 = { 8d85e0fdffff 50 51 51 8bc6 0d00000004 50 }
            // n = 7, score = 100
            //   8d85e0fdffff         | lea                 eax, [ebp - 0x220]
            //   50                   | push                eax
            //   51                   | push                ecx
            //   51                   | push                ecx
            //   8bc6                 | mov                 eax, esi
            //   0d00000004           | or                  eax, 0x4000000
            //   50                   | push                eax

        $sequence_7 = { b002 a2???????? 85f6 7504 3c02 72b5 b001 }
            // n = 7, score = 100
            //   b002                 | mov                 al, 2
            //   a2????????           |                     
            //   85f6                 | test                esi, esi
            //   7504                 | jne                 6
            //   3c02                 | cmp                 al, 2
            //   72b5                 | jb                  0xffffffb7
            //   b001                 | mov                 al, 1

        $sequence_8 = { 330495e82b3902 41 4e 75e2 53 57 83fe20 }
            // n = 7, score = 100
            //   330495e82b3902       | xor                 eax, dword ptr [edx*4 + 0x2392be8]
            //   41                   | inc                 ecx
            //   4e                   | dec                 esi
            //   75e2                 | jne                 0xffffffe4
            //   53                   | push                ebx
            //   57                   | push                edi
            //   83fe20               | cmp                 esi, 0x20

        $sequence_9 = { 8be9 56 8b4500 48 48 7418 48 }
            // n = 7, score = 100
            //   8be9                 | mov                 ebp, ecx
            //   56                   | push                esi
            //   8b4500               | mov                 eax, dword ptr [ebp]
            //   48                   | dec                 eax
            //   48                   | dec                 eax
            //   7418                 | je                  0x1a
            //   48                   | dec                 eax

    condition:
        7 of them and filesize < 598016
}