mirror of
https://github.com/GLEGram/GLEGram-iOS.git
synced 2026-07-31 20:17:24 +02:00
Leeksov
4647310322
Based on Swiftgram 12.5 (Telegram iOS 12.5). All GLEGram features ported and organized in GLEGram/ folder. Features: Ghost Mode, Saved Deleted Messages, Content Protection Bypass, Font Replacement, Fake Profile, Chat Export, Plugin System, and more. See CHANGELOG_12.5.md for full details.
179 lines
5.7 KiB
NASM
179 lines
5.7 KiB
NASM
;; ########################################################################
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;; Macros
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;; ########################################################################
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; descriptor type, base, limit, p_dpl_s, g_db_a
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%macro descriptor 5
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dw (%3 & 0xFFFF) ; Limit 0-15
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dw (%2 & 0xFFFF) ; Base 0-15
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db ((%2 & 0xFF0000) >> 16) ; Base 16-23
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db ((%4 & 0xF) << 4) | (%1 & 0xF ) ; p_dpl_s_type
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db (%5 << 4) | ((%3 & 0xF0000) >> 16) ; g_db_a limit 19:16
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db ((%2 & 0xFF000000) >> 24) ; Base 24-31
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%endmacro
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; cdesc32 base, limit, dpl
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%macro cdesc32 3
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descriptor 0xB, %1, %2, 0x9 | (%3 & 0x3) << 1, 0xD
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%endmacro
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; ddesc32 base, limit, dpl
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%macro ddesc32 3
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descriptor 0x3, %1, %2, 0x9 | (%3 & 0x3) << 1, 0xD
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%endmacro
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; gates type, offset, selector, p_dpl_s
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%macro gates 4
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dw %2 ; Offset 0-15
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dw (%3 & 0xFFFF) ; Selector 0-15
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db 0 ; Reserved
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db ((%4 & 0xF) << 4) | (%1 & 0xF) ; p_dpl_s_type
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dw 0 ; Offset 16-31
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%endmacro
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%macro idesc32 3
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gates 0xE, %1, %2, 0x8 | ((%3 & 0x3) << 1)
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%endmacro
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;; ########################################################################
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;; Code Section
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;; ########################################################################
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SECTION CODE ABSOLUTE=0x00400000 FLAT USE32
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test_code:
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;; Your Code Goes Here
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hlt
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;; ########################################################################
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;; Setup Section
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;; ########################################################################
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SECTION SETUP ALIGN=16 FLAT USE16
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setup:
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mov edx, cr0
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or dl, 0x21 ; Protect Mode On, Int 16 for FPU
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and edx, 0x9FFFFFFF ; Turn Caches on
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mov cr0, edx
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xor edx, edx ; Enable Var MTRRs
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mov eax, 0x0806 ; WriteBack
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mov ecx, 0x2FF
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wrmsr
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lgdt [pgdt] ; Set GDT
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lidt [pidt] ; Set IDT
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jmp 0x8:protect_mode
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protect_mode:
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BITS 32
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mov esp, 0x01000000 ; Get some stack space
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mov ax, 0x0010 ; Set data selectors
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mov ss, ax
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mov ds, ax
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mov es, ax
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mov fs, ax
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mov gs, ax
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jmp test_code ; Jmp to test code
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;; ########################################################################
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;; Protect Mode IDT
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;; ########################################################################
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SECTION IDTP ALIGN=16 FLAT USE32
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;; cdesc32 base, limit, dpl
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gdt0: dq 0.0 ; 0x0000 - Null descriptor
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cdesc32 0x00000000, 0xFFFFF, 0 ; 0x0008 - Code Selector
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ddesc32 0x00000000, 0xFFFFF, 0 ; 0x0010 - Data Selector
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cdesc32 0x00000000, 0xFFFFF, 3 ; 0x0018 - Code Select Ring 3
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ddesc32 0x00000000, 0xFFFFF, 3 ; 0x0020 - Data Select Ring 3
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;; idesc32 offset, selector, dpl
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idt0: idesc32 isrP, 0x0008, 0 ; 0x00, 0 #DE, Divide Error
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idesc32 isrP, 0x0008, 0 ; 0x01, 1 #DB, Debug Fault
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idesc32 isrP, 0x0008, 0 ; 0x02, 2, ---, NMI
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idesc32 isrP, 0x0008, 0 ; 0x03, 3, #BP, Breakpoint
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idesc32 isrP, 0x0008, 0 ; 0x04, 4, #OF, INTO detected Overflow
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idesc32 isrP, 0x0008, 0 ; 0x05, 5, #BR, Bound Range Exceeded
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idesc32 isrP, 0x0008, 0 ; 0x06, 6, #UD, Invalid Opcode
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idesc32 isrP, 0x0008, 0 ; 0x07, 7, #NM, Device Not Available
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idesc32 isrP, 0x0008, 0 ; 0x08, 8, #DF, Double Fault
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idesc32 isrP, 0x0008, 0 ; 0x09 9, ---, Coprocessor Segment Overrun
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idesc32 isrP, 0x0008, 0 ; 0x0A, 10, #TS, Invalid TSS
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idesc32 isrP, 0x0008, 0 ; 0x0B, 11, #NP, Segment Not Present
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idesc32 isrP, 0x0008, 0 ; 0x0C, 12, #SS, Stack Fault
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idesc32 isrP, 0x0008, 0 ; 0x0D, 13, #GP, General Protection Fault
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idesc32 isrP, 0x0008, 0 ; 0x0E, 14, #PF, Page Fault
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idesc32 isrP, 0x0008, 0 ; 0x0F, 15, ---, Reserved
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idesc32 isrP, 0x0008, 0 ; 0x10, 16, #MF, Floating Point Fault
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idesc32 isrP, 0x0008, 0 ; 0x11, 17, #AC, Alignment Check
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idesc32 isrP, 0x0008, 0 ; 0x12 18, #MC, Machine Check
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idesc32 isrP, 0x0008, 0 ; 0x13, 19, #XF, SSE Fault
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pgdt: dw 6 * 8 ; Limit
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dd gdt0 ; base
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pidt: dw 20 * 8 ; Limit
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dd idt0 ; base
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isrP: mov eax, 0xDEADBEEF ; Default Real Mode Interrupt Handler
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out 0x80, eax
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hlt
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;; ########################################################################
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;; Real Mode IDT
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;; ########################################################################
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SECTION IDTR ABSOLUTE=0x00000000 FLAT USE16
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;; FORMAT IP:CS
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dw isrR, 0 ; 0x00, 0 #DE, Divide Error
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dw isrR, 0 ; 0x01, 1 #DB, Debug Fault
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dw isrR, 0 ; 0x02, 2, ---, NMI
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dw isrR, 0 ; 0x03, 3, #BP, Breakpoint
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dw isrR, 0 ; 0x04, 4, #OF, INTO detected Overflow
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dw isrR, 0 ; 0x05, 5, #BR, Bound Range Exceeded
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dw isrR, 0 ; 0x06, 6, #UD, Invalid Opcode
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dw isrR, 0 ; 0x07, 7, #NM, Device Not Available
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dw isrR, 0 ; 0x08, 8, #DF, Double Fault
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dw isrR, 0 ; 0x09 9, ---, Coprocessor Segment Overrun
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dw isrR, 0 ; 0x0A, 10, #TS, Invalid TSS
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dw isrR, 0 ; 0x0B, 11, #NP, Segment Not Present
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dw isrR, 0 ; 0x0C, 12, #SS, Stack Fault
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dw isrR, 0 ; 0x0D, 13, #GP, General Protection Fault
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dw isrR, 0 ; 0x0E, 14, #PF, Page Fault
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dw isrR, 0 ; 0x0F, 15, ---, Reserved
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dw isrR, 0 ; 0x10, 16, #MF, Floating Point Fault
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dw isrR, 0 ; 0x11, 17, #AC, Alignment Check
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dw isrR, 0 ; 0x12 18, #MC, Machine Check
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dw isrR, 0 ; 0x13, 19, #XF, SSE Fault
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isrR: mov eax, 0xDEADBEEF ; Default Real Mode Interrupt Handler
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out 0x80, eax
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hlt
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;; ########################################################################
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;; SMM Handler
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;; ########################################################################
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SECTION SMM ABSOLUTE=0x00038000 USE16
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rsm
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;; ########################################################################
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;; Reset Vector
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;; ########################################################################
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SECTION RESET ABSOLUTE=0xFFFFFFF0 USE16
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jmp far setup
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