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@TDanny
TDanny authored Aug 20, 2024
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Binary file added Rivals of Catan - Part 1/Report.pdf
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276 changes: 276 additions & 0 deletions Rivals of Catan - Part 1/challenge.S
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.intel_syntax noprefix
.global _main

_main:
# ; ------------------------ prolong and local vars ------------------------ ;

push ebp # store ebp
mov ebp, esp
sub esp, 128

mov DWORD PTR [ebp - 4], 0 # ORE
mov DWORD PTR [ebp - 8], 0 # GRAIN
mov DWORD PTR [ebp - 12], 0 # WOOL
mov DWORD PTR [ebp - 16], 0 # BRICK
mov DWORD PTR [ebp - 20], 0 # WOOD

# ; ------------------------ get GetProcAddress addr ------------------------ ;

push 0x0 # pushing null
push 0x41797261 # pushing A,y,r,a
push 0x7262694c # pushing r,b,i,L
push 0x64616f4c # pushing d,a,o,L
push esp # push pointer for "LoadLibraryA"

call FindFunction # call FindFunction("LoadLibraryA")
add esp, 0x14 # clear stack

push 0x00006c6c # pushing null,l,l
push 0x642e7472 # pushing d,#,t,r
push 0x6376736d # pushing c,v,s,m
push esp

call eax # call LoadLibrary("msvcrt.dll")
add esp, 0x10 # clear stack (note arguments are cleared already)

push eax # store module handle for msvcrt
push 0x00007373 # pushing null,s,s
push 0x65726464 # pushing e,r,d,d
push 0x41636f72 # pushing A,c,o,r
push 0x50746547 # pushing P,t,e,G
push esp # push pointer for "GetProcAddress"

call FindFunction # call FindFunction("GetProcAddress")
add esp, 0x14 # clear stack
pop ebx # restore module handle for msvcrt

mov DWORD PTR [ebp - 48], eax # GetProcAddress addr

# ; ------------------------ get addrs for scanf ------------------------ ;

mov eax, DWORD PTR [ebp - 48] # GetProcAddress addr

push 0x00000066 # pushing null,f
push 0x6e616373 # pushing n,a,c,s
push esp # push pointer for "scanf"
push ebx # push module handle for msvcrt

call eax # call GetProcAddress(msvcrt, "scanf")
add esp, 0x10 # clear stack (note arguments are cleared already)

mov DWORD PTR [ebp - 56], eax # scanf addr

# ; ------------------------ get addrs for printf ------------------------ ;

mov eax, DWORD PTR [ebp - 48] # GetProcAddress addr

push 0x00006674 # pushing null,f,t
push 0x6e697270 # pushing n,i,r,p
push esp # push pointer for "printf"
push ebx # push module handle for msvcrt

call eax # call GetProcAddress(msvcrt, "printf")
add esp, 0x10 # clear stack (note arguments are cleared already)

mov DWORD PTR [ebp - 64], eax # printf addr

# ; ------------------------ get addrs for strcmp ------------------------ ;

mov eax, DWORD PTR [ebp - 48] # GetProcAddress addr

push 0x0000706d # pushing null,p,m
push 0x63727473 # pushing c,r,t,s
push esp # push pointer for "strcmp"
push ebx # push module handle for msvcrt

call eax # call GetProcAddress(msvcrt, "strcmp")
add esp, 0x10 # clear stack (note arguments are cleared already)

mov DWORD PTR [ebp - 72], eax # strcmp addr

# ; ------------------------ get addrs for strlen ------------------------ ;

mov eax, DWORD PTR [ebp - 48] # GetProcAddress addr

push 0x00006e65 # pushing null,n,e
push 0x6c727473 # pushing l,r,t,s
push esp # push pointer for "strlen"
push ebx # push module handle for msvcrt

call eax # call GetProcAddress(msvcrt, "strlen")
add esp, 0x10 # clear stack (note arguments are cleared already)

mov DWORD PTR [ebp - 80], eax # strlen addr

# ; ------------------------ main while loop ------------------------ ;

_while_header:

mov eax, DWORD PTR [ebp - 56] # scanf addr

push 0x00007325 # pushing null,s,%
lea edx, [ebp - 40]
push edx # push pointer for string
lea edx, [esp + 4]
push edx # push pointer for "%s"

call eax # call scanf("%s", str)
add esp, 0x0c # clear stack (note arguments are cleared already)

test eax, eax
jle _while_end

# ; ------------------------ main while body ------------------------ ;

_while_body:

# ; ------------------------ str[linelen - 1] =? '\n' ------------------------ ;

lea edx, [ebp - 40] # input from scanf
push edx # push pointer for string

mov eax, DWORD PTR [ebp - 80] # strlen addr
call eax # call strlen(str)
add esp, 0x04 # clear stack

sub eax, 1 # linelen - 1
movzx eax, BYTE PTR [ebp - 40 + eax] # str[linelen - 1]
cmp al, 10
jne _road
mov BYTE PTR [ebp - 40 + eax], 0

# ; ------------------------ road case ------------------------ ;

_road:
push 0x00000000 # pushing null
push 0x64616f72 # pushing d,a,o,r
push esp # push pointer for "road"
lea edx, [ebp - 40] # input from scanf
push edx # push pointer for str

mov eax, DWORD PTR [ebp - 72] # strcmp addr
call eax # call strcmp(str, "road")
add esp, 0x10

cmp eax, 0
jne _city # if strcmp(str, "road") != 0 goto city

add DWORD PTR [ebp - 16], 1 # BRICK
add DWORD PTR [ebp - 20], 1 # WOOD
jmp _while_header

_city:
push 0x00000000 # pushing null
push 0x79746963 # pushing y,t,i,c
push esp # push pointer for "city"
lea edx, [ebp - 40] # input from scanf
push edx # push pointer for str

mov eax, DWORD PTR [ebp - 72] # strcmp addr
call eax # call strcmp(str, "city")
add esp, 0x10

cmp eax, 0
jne _settlement # if strcmp(str, "city") != 0 goto settlement

add DWORD PTR [ebp - 4], 3 # ORE
add DWORD PTR [ebp - 8], 2 # GRAIN
jmp _while_header

_settlement:
push 0x0000746e # pushing null,t,n
push 0x656d656c # pushing e,m,e,l
push 0x74746573 # pushing t,t,e,s
push esp # push pointer for "settlement"
lea edx, [ebp - 40] # input from scanf
push edx # push pointer for str

mov eax, DWORD PTR [ebp - 72] # strcmp addr
call eax # call strcmp(str, "settlement")
add esp, 0x14

cmp eax, 0
jne _development # if strcmp(str, "city") != 0 goto development

add DWORD PTR [ebp - 8], 1 # GRAIN
add DWORD PTR [ebp - 12], 1 # WOOL
add DWORD PTR [ebp - 16], 1 # BRICK
add DWORD PTR [ebp - 20], 1 # WOOD
jmp _while_header

_development:
push 0x00746e65 # pushing null,t,n,e
push 0x6d706f6c # pushing m,p,o,l
push 0x65766564 # pushing e,v,e,d
push esp # push pointer for "development"
lea edx, [ebp - 40] # input from scanf
push edx # push pointer for str

mov eax, DWORD PTR [ebp - 72] # strcmp addr
call eax # call strcmp(str, "development")
add esp, 0x14

cmp eax, 0
jne _while_header # if strcmp(str, "development") != 0 goto _while_header

add DWORD PTR [ebp - 4], 1 # ORE
add DWORD PTR [ebp - 8], 1 # GRAIN
add DWORD PTR [ebp - 12], 1 # WOOL
jmp _while_header

_while_end:

# ; ------------------------ print results ------------------------ ;

mov DWORD PTR [ebp - 84], 0
jmp .L2

.L5:
mov eax, DWORD PTR [ebp - 84] # counter
mov eax, DWORD PTR [ebp - 20 + eax * 4] # next output
cmp eax, 9
jg .L3

push 0x00000030 # pushing null,0
push esp # push pointer for "0"

mov eax, DWORD PTR [ebp - 64] # printf addr
call eax # call printf("0")
add esp, 0x08 # clear stack

.L3:
mov eax, DWORD PTR [ebp - 84] # counter
mov eax, DWORD PTR [ebp - 20 + eax * 4] # next output

push 0x00006425 # pushing null,d,%
push eax # pushing out[i]
lea edx, [esp + 4]
push edx # push pointer for "%d"

mov eax, DWORD PTR [ebp - 64] # printf addr
call eax # call printf("%d", out[i])
add esp, 0x0c # clear stack

cmp DWORD PTR [ebp - 84], 3
jg .L4

push 0x00000020 # pushing null,SPACE
push esp # push pointer for " "

mov eax, DWORD PTR [ebp - 64] # printf addr
call eax # call printf(" ")
add esp, 0x08 # clear stack

.L4:
add DWORD PTR [ebp - 84], 1 # counter

.L2:
cmp DWORD PTR [ebp - 84], 4 # counter
jle .L5


mov eax, 0 # set exit code to 0
leave
ret # return

FindFunction: # placeholder for search_kernel32
109 changes: 109 additions & 0 deletions Rivals of Catan - Part 1/challenge.c
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#include "challenge.h"


int main(){
FILE* input;
char buffer[MAX_SIZE_BUFFER];

input = fopen("input.txt", "w+");
if(!input){
perror("Error opening a file");
exit(1);
}
int sources[NUM_RES]= {0};
char str[MAX_LENGTH]= {0}; //malloc(sizeof(char)*(MAX_LENGTH));
if(!str){
perror("Unable to allocate buffer");
exit(1);
}
if(fgets(buffer, MAX_SIZE_BUFFER, stdin) != NULL){
if(fputs(buffer , input) == EOF){
perror("Error writing to file");
exit(1);
}
} else{
printf("Error reading from stdin\n");
return 1;
}

rewind(input);
fseek(input, BYTE, SEEK_SET); //moving the pointer after "{"
char ch = fgetc(input);
int i=0;
while(ch != '\n' && ch != EOF){
while(ch != ',' && ch != '}'){
str[i++]=ch;
ch = fgetc(input);
}
str[i]='\0';
if(strcmp(str , "road")==0){
sources[BRICK]++;
sources[WOOD]++;
}
if(strcmp(str , "settelment")==0){
sources[BRICK]++;
sources[WOOD]++;
sources[WOOL]++;
sources[GRAIN]++;
}

if(strcmp(str , "city")==0){
sources[GRAIN]++;
sources[GRAIN]++;
sources[ORE]++;
sources[ORE]++;
sources[ORE]++;
}
if(strcmp(str , "development")==0){
sources[WOOL]++;
sources[GRAIN]++;
sources[ORE]++;
}
i=0;
ch = fgetc(input);
}


//print the sum of sources needed for the request
int j=0;
if(sources[j] < 10){
printf("0%d\n", sources[j++]);
printf("BRICK\n");
} else{
printf("%d\n", sources[j++]);
printf("BRICK\n");
}
if(sources[j] < 10){
printf("0%d\n", sources[j++]);
printf("WOOD\n");
} else{
printf("%d\n", sources[j++]);
printf("WOOD\n");
}
if(sources[j] < 10){
printf("0%d\n", sources[j++]);
printf("WOOL\n");
} else{
printf("%d\n", sources[j++]);
printf("WOOL\n");
}
if(sources[j] < 10){
printf("0%d\n", sources[j++]);
printf("GRAIN\n");
} else{
printf("%d\n", sources[j++]);
printf("GRAIN\n");
}
if(sources[j] < 10){
printf("0%d\n", sources[j++]);
printf("ORE\n");
} else{
printf("%d\n", sources[j++]);
printf("ORE\n");
}

fclose(input);
//free(str);
return(0);

}
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