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Old 07-30-2021, 12:57
psgama psgama is offline
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Firmware Analysis - ZLIB file conversion to Bitmap

Hi guys,

I've been picking away at the firmware for a common security system trying to see if the bitmaps can be modified and I'm a bit stuck.

The files within the firmware are compressed using ZLIB, but after decompression, they don't resemble a bitmap file even though the firmware indicates that's what they are.

Paste the below into a HEX editor and you'll see what I mean.

Can anyone point me in the right direction on how to convert this back into a bitmap? The file below should be called: icon_ui_barrier_button_up_Bitmap

Compressed ZLIB HEX. Zlib Magic number is 789C
Code:
69 63 6F 6E 5F 75 69 5F 62 61 72 72 69 65 72 5F 62 75 74 74 6F 6E 5F 75 70 5F 42 69 74 6D 61 70 00 00 00 00 00 00 00 00 00 00 00 00 1A 05 00 00 78 9C 95 93 3F 68 53 51 18 C5 5F 4D 6B 12 1B CA B3 D5 6A 8C 7F 1A 6A AD B4 56 F1 4F 15 11 5B 74 51 D4 8A E2 E0 60 07 AD 83 88 9B 83 0A 5D A2 74 72 70 70 F0 CF E0 C3 51 44 1C 82 83 E0 64 9D DA A1 5B 5B 44 B0 16 85 0E A5 9B FA 48 3B 1C CF 77 BF 2F 1F 64 34 70 2E 37 E7 FC EE 7D E7 DD DC 3C 8C 1F 44 DD 91 7E 2E 51 C7 C3 2C 53 59 C0 C9 28 49 4F 05 C9 5C FD 63 61 CC 32 1D A6 FB 08 0B 48 91 A4 30 C9 5C BC 61 E3 8E F8 5E 19 D2 05 EA 0B 89 1F 68 89 84 CF 54 64 2E 9E 66 19 E3 0F 85 71 1D 57 E5 E9 9E A1 AA 68 0D 2B C4 AB 42 BD BC 71 07 9D 1E 25 F3 9C 29 D0 16 E8 A6 8A 7E 1F 35 66 BF B7 C9 71 FD 51 6A 8A 6D 56 B0 D1 DB AC 40 3C CD 72 C6 EF F3 FD 8B 74 2F 50 F3 D8 E2 6D E6 A1 5E D1 B8 FE 30 36 31 19 27 53 45 C9 9B 48 EF 71 CB F7 7A 93 98 6B AF 53 33 6C 52 C3 0E 6F 52 83 78 9A C5 C6 EF F1 26 7D 74 2F 53 35 74 7B 13 59 21 5E 9F 71 BB 1B 4E F1 29 D3 69 F4 3A 3D 0D F5 F2 C6 95 BD 51 33 E9 4E EA 31 1B CD A1 DF 1B CD 41 3C CD 9A 8D EF F2 67 0C D1 BD 1B C9 D9 1F F0 67 00 EA 0D 19 B7 CB CE 26 49 CF D1 5D C4 61 27 17 49 BE A0 7A A3 9D 81 D9 6E 6D 92 34 26 53 A6 BE B2 CD 32 7F 97 7A 9B 9F A4 3F 50 25 EE B4 21 2A 05 7E 9B B5 49 D2 02 39 B9 0D 9F 70 A2 A1 CD 33 EA 8A 71 45 6F 73 87 CC 5B DE D9 3A F9 97 D4 AB 70 CB B6 06 A6 D3 DB 14 C9 9C A7 BE B3 CD 6F 9C 6E B8 37 E2 95 D9 A6 3D DA 1C F8 4D DE A6 8B DC 18 F5 0D 67 FD 19 1F B9 62 2C DC E2 8E C0 75 78 9B 27 DC E7 33 EF 54 FD DE BC 23 79 3B 6A 0F 79 EC 4D 7A 98 DF A3 7E 91 5E C3 45 DB 37 49 FF 40 FD 1E 63 DB BC C5 20 DD 5B D4 2A 4F A0 4E AF 42 BD 41 E3 0A 4E CB FF ED 0D D3 59 5C 75 7A 16 EA B5 1A 97 F7 36 59 32 72 53 5E 87 5F E9 9A 9F CB 32 D4 93 2C 6B 7C CE DF 74 84 EE 04 6E F8 9B 4E 40 3C CD D7 7B 93 01 E6 EF 99 2C E1 A6 37 59 82 7A 03 C6 B5 F8 9E 2F E9 4E 42 DE 69 26 EC 39 09 F1 34 BF FF 9F E3 3F B7 0C 49 ED FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 55 CC 77 33 9A 01 00 00 97 6B 00 80 01 00 3C 21
Decompressed
Code:
69 63 6F 6E 5F 75 69 5F 62 61 72 72 69 65 72 5F 62 75 74 74 6F 6E 5F 75 70 5F 42 69 74 6D 61 70 00 00 00 00 00 00 00 00 00 00 00 00 1A 05 00 00 81 10 78 00 23 00 00 00 00 00 00 00 50 00 00 00 39 00 00 00 00 00 03 80 DF FF 3D 00 9E F7 41 00 9E F7 41 00 DF FF 3D 00 39 00 00 00 00 00 37 00 00 00 00 00 07 80 DF FF 3F 00 DF FF 82 FF DF FF F7 FF 9E F7 FF FF 9E F7 FF FF 9E F7 F7 FF 9E F7 82 FF DF FF 3F 00 37 00 00 00 00 00 34 00 00 00 00 00 03 80 DF FF 03 00 DF FF 0C 00 DF FF C3 FF 9E F7 E0 FF 05 00 9E F7 FF FF 03 80 9E F7 E0 FF DF FF C3 FF DF FF 0C 00 DF FF 03 00 34 00 00 00 00 00 32 00 00 00 00 00 02 80 DF FF 09 00 DF FF 47 00 DF FF B2 FF 0B 00 9E F7 FF FF 02 80 DF FF B2 FF DF FF 47 00 DF FF 09 00 32 00 00 00 00 00 31 00 00 00 00 00 02 80 DF FF 5C 00 9E F7 97 FF DF FF FF FF 0E 00 9E F7 FF FF 01 80 9E F7 97 FF DF FF 5C 00 31 00 00 00 00 00 2E 00 00 00 00 00 03 80 DF FF 08 00 DF FF 36 00 DF FF C9 FF 9E F7 ED FF 11 00 9E F7 FF FF 03 80 9E F7 ED FF DF FF C9 FF DF FF 36 00 DF FF 08 00 2E 00 00 00 00 00 2C 00 00 00 00 00 02 80 DF FF 19 00 DF FF 4C 00 DF FF D7 FF 17 00 9E F7 FF FF 02 80 DF FF D7 FF DF FF 4C 00 DF FF 19 00 2C 00 00 00 00 00 2B 00 00 00 00 00 01 80 DF FF 7B 00 9E F7 B2 FF 1B 00 9E F7 FF FF 01 80 9E F7 B2 FF DF FF 7B 00 2B 00 00 00 00 00 28 00 00 00 00 00 03 80 DF FF 10 00 DF FF 60 00 DF FF CE FF 9E F7 F9 FF 1D 00 9E F7 FF FF 03 80 9E F7 F9 FF DF FF CE FF DF FF 60 00 DF FF 10 00 28 00 00 00 00 00 26 00 00 00 00 00 02 80 DF FF 2A 00 DF FF 51 00 DF FF F9 FF 23 00 9E F7 FF FF 02 80 DF FF F9 FF DF FF 51 00 DF FF 2A 00 26 00 00 00 00 00 24 00 00 00 00 00 02 80 DF FF 09 00 DF FF 92 FF DF FF CA FF 27 00 9E F7 FF FF 02 80 DF FF CA FF DF FF 92 FF DF FF 09 00 24 00 00 00 00 00 21 00 00 00 00 00 03 80 DF FF 04 00 DF FF 16 00 DF FF 8A FF 9E F7 D6 FF 2B 00 9E F7 FF FF 03 80 9E F7 D6 FF DF FF 8A FF DF FF 16 00 DF FF 04 00 21 00 00 00 00 00 20 00 00 00 00 00 02 80 DF FF 3E 00 DF FF 72 00 DF FF FF FF 2F 00 9E F7 FF FF 02 80 DF FF FF FF DF FF 72 00 DF FF 3E 00 20 00 00 00 00 00 1F 00 00 00 00 00 01 80 9E F7 4A 00 DF FF E1 FF 33 00 9E F7 FF FF 02 80 DF FF E1 FF DF FF 98 FF DF FF 27 00 1E 00 00 00 00 00 1C 00 00 00 00 00 03 80 9E F7 10 00 9E F7 21 00 9E F7 D9 FF 9E F7 EB FF 36 00 9E F7 FF FF 03 80 9E F7 E3 FF DF FF B4 FF DF FF 1B 00 DF FF 0A 00 1B 00 00 00 00 00 1A 00 00 00 00 00 02 80 9E F7 0C 00 9E F7 5C 00 9E F7 BB FF 3B 00 9E F7 FF FF 02 80 DF FF FF FF DF FF 96 FF DF FF 53 00 1A 00 00 00 00 00 19 00 00 00 00 00 01 80 9E F7 6B 00 9E F7 AA FF 3F 00 9E F7 FF FF 02 80 DF FF F6 FF DF FF 9D FF DF FF 47 00 18 00 00 00 00 00 16 00 00 00 00 00 03 80 9E F7 19 00 9E F7 4B 00 9E F7 DE FF 9E F7 F4 FF 42 00 9E F7 FF FF 03 80 9E F7 ED FF DF FF DE FF 9E F7 21 00 DF FF 12 00 15 00 00 00 00 00 14 00 00 00 00 00 02 80 9E F7 20 00 9E F7 62 00 9E F7 DB FF 48 00 9E F7 FF FF 02 80 DF FF B8 FF DF FF 62 00 DF FF 09 00 13 00 00 00 00 00 13 00 00 00 00 00 01 80 9E F7 8E FF 9E F7 C1 FF 4C 00 9E F7 FF FF 01 80 9E F7 AC FF DF FF 69 00 12 00 00 00 00 00 10 00 00 00 00 00 03 80 9E F7 25 00 9E F7 76 00 9E F7 E4 FF 9E F7 FB FF 4E 00 9E F7 FF FF 02 80 9E F7 F5 FF 9E F7 76 00 9E F7 25 00 10 00 00 00 00 00 0E 00 00 00 00 00 02 80 9E F7 35 00 9E F7 67 00 9E F7 FA FF 53 00 9E F7 FF FF 02 80 9E F7 FA FF 9E F7 67 00 9E F7 35 00 0E 00 00 00 00 00 0C 00 00 00 00 00 02 80 9E F7 0B 00 9E F7 A8 FF 9E F7 D5 FF 57 00 9E F7 FF FF 02 80 9E F7 D5 FF 9E F7 A8 FF 9E F7 0B 00 0C 00 00 00 00 00 09 00 00 00 00 00 03 80 9E F7 07 00 9E F7 2B 00 9E F7 A0 FF 9E F7 EB FF 5B 00 9E F7 FF FF 03 80 9E F7 EB FF 9E F7 A0 FF 9E F7 2B 00 9E F7 07 00 09 00 00 00 00 00 08 00 00 00 00 00 01 80 9E F7 4D 00 9E F7 84 FF 61 00 9E F7 FF FF 01 80 9E F7 84 FF 9E F7 4D 00 08 00 00 00 00 00 06 00 00 00 00 00 02 80 9E F7 2D 00 9E F7 AE FF 9E F7 E7 FF 63 00 9E F7 FF FF 02 80 9E F7 E7 FF 9E F7 AE FF 9E F7 2D 00 06 00 00 00 00 00 05 00 00 00 00 00 01 80 9E F7 99 FF 9E F7 C2 FF 67 00 9E F7 CE FF 01 80 9E F7 C2 FF 9E F7 99 FF 05 00 00 00 00 00 77 00 00 00 00 00 77 00 00 00 00 00 77 00 00 00 00 00 77 00 00 00 00 00 77 00 00 00 00 00 77 00 00 00 00 00 77 00 00 00 00 00 77 00 00 00 00 00
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