printf

Description of the 'printf' function in HyperDbg Scripts

Function

printf

Syntax

printf( Format, Expressions [...] );

Parameters

[Format-string]

A printf-like format string.

[Expression] [...]

MASM-like expression(s) to evaluate, you can choose multiple expressions based on the format string.

Description

Evaluates and prints a printf-like format string with MASM expression(s).

All the format specifiers should be in a lower-case format.

Supported Format Specifiers

Specifier	Description
%d	Decimal signed integer
%i	Decimal signed integer
%u	Decimal unsigned integer
%o	Octal integer
%x	Hex integer
%c	Character (char)
%p	Pointer (void *)
%s	String
%ws	Wide-String
%ls	Wide-String

Integer Format Specifiers (Long)

Specifier	Description
%ld	Long decimal signed integer
%li	Long decimal signed integer
%lu	Long decimal unsigned integer
%lo	Long octal integer
%lx	Long hex integer

Integer Format Specifiers (Long Long)

Specifier	Description
%lld	Long long (64-bit) decimal signed integer
%lli	Long long (64-bit) decimal signed integer
%llu	Long long (64-bit) decimal unsigned integer
%llo	Long long (64-bit) octal integer
%llx	Long long (64-bit) hex integer

Integer Format Specifiers (Short)

Specifier	Description
%hd	Short decimal signed integer
%hi	Short decimal signed integer
%hu	Short decimal unsigned integer
%ho	Short octal integer
%hx	Short hex integer

Examples

printf("Result is %s", @rcx);

Print data as an ASCII string pointed by rcx register.

print("The value is %llx and the string is : %ws "dq(@rcx), poi(rax));

Print and evaluate the above expressions. Note that %ws is a wide-string pointed by rax register. Also, the value of rcx register is also dereferenced and showed in quad-hex format.

You can see more examples here.

Remarks

You should consider avoiding "unsafe" behavior in your expressions and strings.

Related

print